./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:00:24,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:00:24,198 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:00:24,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:00:24,203 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:00:24,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:00:24,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:00:24,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:00:24,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:00:24,231 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:00:24,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:00:24,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:00:24,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:00:24,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:00:24,233 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:00:24,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:00:24,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:00:24,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:00:24,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:00:24,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:00:24,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:00:24,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:00:24,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:00:24,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:00:24,236 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:00:24,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:00:24,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:00:24,236 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:00:24,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:00:24,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:00:24,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:00:24,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:00:24,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:00:24,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:00:24,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:00:24,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:00:24,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:00:24,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:00:24,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:00:24,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:00:24,240 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:00:24,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:00:24,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:00:24,241 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:00:24,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:00:24,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:00:24,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:00:24,503 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:00:24,504 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:00:24,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:00:25,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:00:25,847 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:00:25,849 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:00:25,870 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6808a7038/7463aca0d2b74909bc1f2d40681e9535/FLAGf04473f95 [2024-06-28 00:00:25,883 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6808a7038/7463aca0d2b74909bc1f2d40681e9535 [2024-06-28 00:00:25,885 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:00:25,885 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:00:25,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 00:00:25,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:00:25,969 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:00:25,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:00:25,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:00:25,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:00:25,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:00:25" (1/2) ... [2024-06-28 00:00:25,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3602c939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:00:25, skipping insertion in model container [2024-06-28 00:00:25,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:00:25" (1/2) ... [2024-06-28 00:00:25,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21dc8055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:00:25, skipping insertion in model container [2024-06-28 00:00:25,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:00:25" (2/2) ... [2024-06-28 00:00:25,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3602c939 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:25, skipping insertion in model container [2024-06-28 00:00:25,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:00:25" (2/2) ... [2024-06-28 00:00:25,980 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:00:26,005 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:00:26,007 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:00:26,007 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:00:26,007 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:00:26,007 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-28 00:00:26,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:00:26,389 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:00:26,401 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:00:26,559 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:00:26,591 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:00:26,591 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26 WrapperNode [2024-06-28 00:00:26,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:00:26,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:00:26,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:00:26,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:00:26,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,671 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 132 [2024-06-28 00:00:26,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:00:26,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:00:26,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:00:26,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:00:26,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,715 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:00:26,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,716 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:00:26,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:00:26,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:00:26,771 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:00:26,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (1/1) ... [2024-06-28 00:00:26,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:00:26,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:00:26,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:00:26,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:00:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:00:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:00:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:00:26,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:00:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:00:26,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:00:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:00:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:00:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:00:26,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:00:26,830 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:00:26,947 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:00:26,949 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:00:27,369 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:00:27,369 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:00:27,602 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:00:27,603 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:00:27,604 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:00:27 BoogieIcfgContainer [2024-06-28 00:00:27,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:00:27,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:00:27,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:00:27,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:00:27,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:00:25" (1/4) ... [2024-06-28 00:00:27,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fd04ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:00:27, skipping insertion in model container [2024-06-28 00:00:27,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:00:25" (2/4) ... [2024-06-28 00:00:27,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fd04ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:00:27, skipping insertion in model container [2024-06-28 00:00:27,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:26" (3/4) ... [2024-06-28 00:00:27,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fd04ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:00:27, skipping insertion in model container [2024-06-28 00:00:27,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:00:27" (4/4) ... [2024-06-28 00:00:27,614 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:00:27,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:00:27,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:00:27,628 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:00:27,666 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:00:27,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 00:00:27,719 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 00:00:27,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:00:27,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:00:27,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 00:00:27,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 00:00:27,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:00:27,742 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@658e24c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:00:27,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:00:27,747 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:00:27,747 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 00:00:27,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:00:27,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:27,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:00:27,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:27,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash 401809168, now seen corresponding path program 1 times [2024-06-28 00:00:27,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:27,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969503117] [2024-06-28 00:00:27,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:27,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:29,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:29,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969503117] [2024-06-28 00:00:29,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969503117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:29,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:29,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:00:29,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408219063] [2024-06-28 00:00:29,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:29,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:00:29,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:00:29,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:00:29,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:00:29,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:29,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:29,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:00:29,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:29,322 INFO L124 PetriNetUnfolderBase]: 216/386 cut-off events. [2024-06-28 00:00:29,322 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 00:00:29,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 386 events. 216/386 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1364 event pairs, 133 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-28 00:00:29,328 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 00:00:29,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-28 00:00:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:00:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:00:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-28 00:00:29,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-06-28 00:00:29,339 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 49 transitions. [2024-06-28 00:00:29,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-28 00:00:29,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:00:29,342 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 00:00:29,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 00:00:29,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 00:00:29,349 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 00:00:29,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:29,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:29,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:29,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:00:29,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:29,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:29,351 INFO L85 PathProgramCache]: Analyzing trace with hash -408414353, now seen corresponding path program 1 times [2024-06-28 00:00:29,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:29,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030004843] [2024-06-28 00:00:29,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:29,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:30,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:30,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030004843] [2024-06-28 00:00:30,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030004843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:30,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:30,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:00:30,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537969100] [2024-06-28 00:00:30,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:30,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:00:30,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:30,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:00:30,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:00:30,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:00:30,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:30,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:30,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:00:30,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:30,440 INFO L124 PetriNetUnfolderBase]: 213/381 cut-off events. [2024-06-28 00:00:30,440 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-28 00:00:30,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 381 events. 213/381 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1357 event pairs, 109 based on Foata normal form. 2/381 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-28 00:00:30,445 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 00:00:30,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-28 00:00:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:00:30,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:00:30,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-06-28 00:00:30,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 00:00:30,447 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 62 transitions. [2024-06-28 00:00:30,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-28 00:00:30,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:00:30,448 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 00:00:30,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 00:00:30,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 00:00:30,449 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 00:00:30,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:30,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:30,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:30,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:00:30,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:30,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:30,451 INFO L85 PathProgramCache]: Analyzing trace with hash 224058001, now seen corresponding path program 1 times [2024-06-28 00:00:30,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:30,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845154322] [2024-06-28 00:00:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:30,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:31,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:31,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845154322] [2024-06-28 00:00:31,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845154322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:31,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:31,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:00:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642497937] [2024-06-28 00:00:31,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:00:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:00:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:00:31,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:00:31,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:31,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:31,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:00:31,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:31,364 INFO L124 PetriNetUnfolderBase]: 214/383 cut-off events. [2024-06-28 00:00:31,365 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-06-28 00:00:31,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 383 events. 214/383 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1367 event pairs, 78 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 960. Up to 338 conditions per place. [2024-06-28 00:00:31,367 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-28 00:00:31,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 253 flow [2024-06-28 00:00:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:00:31,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:00:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-28 00:00:31,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2024-06-28 00:00:31,369 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 81 transitions. [2024-06-28 00:00:31,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 253 flow [2024-06-28 00:00:31,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:00:31,371 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-28 00:00:31,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-28 00:00:31,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 00:00:31,372 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-28 00:00:31,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:31,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:31,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:31,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:00:31,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:31,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:31,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1283962284, now seen corresponding path program 1 times [2024-06-28 00:00:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305342596] [2024-06-28 00:00:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:31,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:32,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:32,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305342596] [2024-06-28 00:00:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305342596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:32,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:32,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:00:32,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286225052] [2024-06-28 00:00:32,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:32,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:00:32,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:32,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:00:32,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:00:32,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:00:32,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:32,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:32,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:00:32,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:32,701 INFO L124 PetriNetUnfolderBase]: 224/400 cut-off events. [2024-06-28 00:00:32,702 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2024-06-28 00:00:32,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 400 events. 224/400 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1437 event pairs, 48 based on Foata normal form. 4/402 useless extension candidates. Maximal degree in co-relation 1185. Up to 312 conditions per place. [2024-06-28 00:00:32,705 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 43 selfloop transitions, 19 changer transitions 0/65 dead transitions. [2024-06-28 00:00:32,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 392 flow [2024-06-28 00:00:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:00:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:00:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 00:00:32,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5376344086021505 [2024-06-28 00:00:32,710 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 100 transitions. [2024-06-28 00:00:32,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 392 flow [2024-06-28 00:00:32,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 65 transitions, 388 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 00:00:32,715 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 277 flow [2024-06-28 00:00:32,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-06-28 00:00:32,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 00:00:32,717 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 277 flow [2024-06-28 00:00:32,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:32,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:32,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:32,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:00:32,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:32,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:32,718 INFO L85 PathProgramCache]: Analyzing trace with hash 571408976, now seen corresponding path program 1 times [2024-06-28 00:00:32,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:32,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716595909] [2024-06-28 00:00:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:32,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:33,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:33,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:33,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716595909] [2024-06-28 00:00:33,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716595909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:33,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:33,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:33,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040968251] [2024-06-28 00:00:33,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:33,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:33,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:33,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:33,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:33,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:00:33,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 277 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:33,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:33,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:00:33,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:34,131 INFO L124 PetriNetUnfolderBase]: 230/414 cut-off events. [2024-06-28 00:00:34,132 INFO L125 PetriNetUnfolderBase]: For 910/910 co-relation queries the response was YES. [2024-06-28 00:00:34,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 414 events. 230/414 cut-off events. For 910/910 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1520 event pairs, 23 based on Foata normal form. 8/420 useless extension candidates. Maximal degree in co-relation 1468. Up to 292 conditions per place. [2024-06-28 00:00:34,135 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 43 selfloop transitions, 22 changer transitions 0/68 dead transitions. [2024-06-28 00:00:34,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 481 flow [2024-06-28 00:00:34,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:34,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 00:00:34,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069124423963134 [2024-06-28 00:00:34,137 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 277 flow. Second operand 7 states and 110 transitions. [2024-06-28 00:00:34,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 481 flow [2024-06-28 00:00:34,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 469 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 00:00:34,143 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 319 flow [2024-06-28 00:00:34,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 00:00:34,144 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-28 00:00:34,146 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 319 flow [2024-06-28 00:00:34,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:34,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:34,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:34,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:00:34,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:34,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:34,152 INFO L85 PathProgramCache]: Analyzing trace with hash 42354102, now seen corresponding path program 1 times [2024-06-28 00:00:34,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:34,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124800445] [2024-06-28 00:00:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:34,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:35,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124800445] [2024-06-28 00:00:35,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124800445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:35,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:35,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:00:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110597766] [2024-06-28 00:00:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:35,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:00:35,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:00:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:00:35,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:35,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 319 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:35,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:35,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:35,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:35,555 INFO L124 PetriNetUnfolderBase]: 228/411 cut-off events. [2024-06-28 00:00:35,555 INFO L125 PetriNetUnfolderBase]: For 1061/1061 co-relation queries the response was YES. [2024-06-28 00:00:35,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601 conditions, 411 events. 228/411 cut-off events. For 1061/1061 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1519 event pairs, 57 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 1575. Up to 400 conditions per place. [2024-06-28 00:00:35,562 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 43 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2024-06-28 00:00:35,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 449 flow [2024-06-28 00:00:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:00:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:00:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-28 00:00:35,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:00:35,564 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 319 flow. Second operand 5 states and 56 transitions. [2024-06-28 00:00:35,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 449 flow [2024-06-28 00:00:35,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 393 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 00:00:35,570 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 307 flow [2024-06-28 00:00:35,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-28 00:00:35,572 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-28 00:00:35,573 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 307 flow [2024-06-28 00:00:35,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:35,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:35,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:35,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:00:35,574 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:35,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:35,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1300956534, now seen corresponding path program 1 times [2024-06-28 00:00:35,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:35,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023968602] [2024-06-28 00:00:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:35,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:36,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:36,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023968602] [2024-06-28 00:00:36,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023968602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:36,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:36,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:00:36,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352518283] [2024-06-28 00:00:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:36,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:00:36,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:36,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:00:36,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:00:36,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:36,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:36,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:36,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:36,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:37,364 INFO L124 PetriNetUnfolderBase]: 226/408 cut-off events. [2024-06-28 00:00:37,365 INFO L125 PetriNetUnfolderBase]: For 1156/1156 co-relation queries the response was YES. [2024-06-28 00:00:37,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 408 events. 226/408 cut-off events. For 1156/1156 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1496 event pairs, 56 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1513. Up to 394 conditions per place. [2024-06-28 00:00:37,368 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 42 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-06-28 00:00:37,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 423 flow [2024-06-28 00:00:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:00:37,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:00:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-28 00:00:37,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 00:00:37,371 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 307 flow. Second operand 6 states and 64 transitions. [2024-06-28 00:00:37,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 423 flow [2024-06-28 00:00:37,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 407 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 00:00:37,376 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 318 flow [2024-06-28 00:00:37,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-28 00:00:37,377 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-28 00:00:37,377 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 318 flow [2024-06-28 00:00:37,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:37,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:37,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:37,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:00:37,378 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:37,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:37,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1669226547, now seen corresponding path program 1 times [2024-06-28 00:00:37,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:37,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586764266] [2024-06-28 00:00:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:37,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:38,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:38,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586764266] [2024-06-28 00:00:38,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586764266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:38,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:38,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:00:38,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83280813] [2024-06-28 00:00:38,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:38,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:00:38,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:00:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:00:38,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:38,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:38,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:38,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:38,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:38,461 INFO L124 PetriNetUnfolderBase]: 249/449 cut-off events. [2024-06-28 00:00:38,462 INFO L125 PetriNetUnfolderBase]: For 1538/1538 co-relation queries the response was YES. [2024-06-28 00:00:38,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 449 events. 249/449 cut-off events. For 1538/1538 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1673 event pairs, 61 based on Foata normal form. 2/449 useless extension candidates. Maximal degree in co-relation 1748. Up to 410 conditions per place. [2024-06-28 00:00:38,465 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-28 00:00:38,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 555 flow [2024-06-28 00:00:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:00:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:00:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-28 00:00:38,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 00:00:38,468 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 318 flow. Second operand 6 states and 70 transitions. [2024-06-28 00:00:38,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 555 flow [2024-06-28 00:00:38,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 532 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 00:00:38,474 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 409 flow [2024-06-28 00:00:38,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-06-28 00:00:38,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-28 00:00:38,476 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 409 flow [2024-06-28 00:00:38,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:38,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:38,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:38,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:00:38,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:38,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:38,477 INFO L85 PathProgramCache]: Analyzing trace with hash 321527799, now seen corresponding path program 2 times [2024-06-28 00:00:38,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:38,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247363470] [2024-06-28 00:00:38,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:38,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:39,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247363470] [2024-06-28 00:00:39,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247363470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:39,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:39,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:00:39,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000456102] [2024-06-28 00:00:39,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:39,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:00:39,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:39,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:00:39,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:00:39,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:39,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 409 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:39,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:39,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:39,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:39,533 INFO L124 PetriNetUnfolderBase]: 246/444 cut-off events. [2024-06-28 00:00:39,533 INFO L125 PetriNetUnfolderBase]: For 1841/1841 co-relation queries the response was YES. [2024-06-28 00:00:39,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1859 conditions, 444 events. 246/444 cut-off events. For 1841/1841 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1667 event pairs, 59 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 1827. Up to 428 conditions per place. [2024-06-28 00:00:39,537 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 51 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2024-06-28 00:00:39,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 556 flow [2024-06-28 00:00:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:00:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:00:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-28 00:00:39,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 00:00:39,539 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 409 flow. Second operand 6 states and 64 transitions. [2024-06-28 00:00:39,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 556 flow [2024-06-28 00:00:39,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 545 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:00:39,545 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 438 flow [2024-06-28 00:00:39,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-06-28 00:00:39,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-28 00:00:39,546 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 438 flow [2024-06-28 00:00:39,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:39,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:39,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:39,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:00:39,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:39,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:39,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1219972937, now seen corresponding path program 3 times [2024-06-28 00:00:39,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:39,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059237593] [2024-06-28 00:00:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:39,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:41,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:41,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059237593] [2024-06-28 00:00:41,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059237593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:41,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:00:41,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035268533] [2024-06-28 00:00:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:41,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:00:41,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:00:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:00:41,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:41,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:41,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:41,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:41,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:41,517 INFO L124 PetriNetUnfolderBase]: 239/431 cut-off events. [2024-06-28 00:00:41,517 INFO L125 PetriNetUnfolderBase]: For 2176/2176 co-relation queries the response was YES. [2024-06-28 00:00:41,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1846 conditions, 431 events. 239/431 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1583 event pairs, 55 based on Foata normal form. 2/431 useless extension candidates. Maximal degree in co-relation 1812. Up to 370 conditions per place. [2024-06-28 00:00:41,546 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2024-06-28 00:00:41,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 623 flow [2024-06-28 00:00:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:41,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 00:00:41,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-28 00:00:41,549 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 438 flow. Second operand 7 states and 81 transitions. [2024-06-28 00:00:41,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 623 flow [2024-06-28 00:00:41,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 602 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 00:00:41,554 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 490 flow [2024-06-28 00:00:41,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-06-28 00:00:41,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-28 00:00:41,555 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 490 flow [2024-06-28 00:00:41,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:41,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:41,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:41,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:00:41,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:41,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:41,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2047633813, now seen corresponding path program 1 times [2024-06-28 00:00:41,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:41,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722505425] [2024-06-28 00:00:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:41,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:43,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:43,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722505425] [2024-06-28 00:00:43,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722505425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:43,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:43,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560561399] [2024-06-28 00:00:43,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:43,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:43,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:43,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:43,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 490 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:43,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:43,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:43,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:43,692 INFO L124 PetriNetUnfolderBase]: 237/428 cut-off events. [2024-06-28 00:00:43,692 INFO L125 PetriNetUnfolderBase]: For 2607/2607 co-relation queries the response was YES. [2024-06-28 00:00:43,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1928 conditions, 428 events. 237/428 cut-off events. For 2607/2607 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1582 event pairs, 58 based on Foata normal form. 1/427 useless extension candidates. Maximal degree in co-relation 1892. Up to 409 conditions per place. [2024-06-28 00:00:43,697 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 54 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-28 00:00:43,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 644 flow [2024-06-28 00:00:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:43,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-28 00:00:43,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-06-28 00:00:43,699 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 490 flow. Second operand 7 states and 72 transitions. [2024-06-28 00:00:43,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 644 flow [2024-06-28 00:00:43,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 583 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:00:43,706 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 472 flow [2024-06-28 00:00:43,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=472, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2024-06-28 00:00:43,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-28 00:00:43,708 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 472 flow [2024-06-28 00:00:43,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:43,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:43,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:43,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:00:43,709 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:43,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:43,709 INFO L85 PathProgramCache]: Analyzing trace with hash 206416887, now seen corresponding path program 1 times [2024-06-28 00:00:43,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:43,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044745982] [2024-06-28 00:00:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:43,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:44,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044745982] [2024-06-28 00:00:44,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044745982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:44,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:44,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:44,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928754510] [2024-06-28 00:00:44,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:44,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:44,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:44,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:44,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:44,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:44,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 472 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:44,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:44,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:44,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:45,114 INFO L124 PetriNetUnfolderBase]: 253/454 cut-off events. [2024-06-28 00:00:45,114 INFO L125 PetriNetUnfolderBase]: For 3054/3054 co-relation queries the response was YES. [2024-06-28 00:00:45,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054 conditions, 454 events. 253/454 cut-off events. For 3054/3054 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1690 event pairs, 61 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 2017. Up to 393 conditions per place. [2024-06-28 00:00:45,120 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 56 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2024-06-28 00:00:45,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 78 transitions, 722 flow [2024-06-28 00:00:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:45,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 00:00:45,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-28 00:00:45,121 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 472 flow. Second operand 7 states and 81 transitions. [2024-06-28 00:00:45,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 78 transitions, 722 flow [2024-06-28 00:00:45,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 692 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:00:45,130 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 546 flow [2024-06-28 00:00:45,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-06-28 00:00:45,131 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-28 00:00:45,131 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 546 flow [2024-06-28 00:00:45,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:45,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:45,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:45,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:00:45,132 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:45,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -941849661, now seen corresponding path program 2 times [2024-06-28 00:00:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:45,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141336267] [2024-06-28 00:00:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:45,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:45,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141336267] [2024-06-28 00:00:45,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141336267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:45,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:45,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:45,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820436315] [2024-06-28 00:00:45,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:45,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:45,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:46,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:46,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 546 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:46,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:46,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:46,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:46,223 INFO L124 PetriNetUnfolderBase]: 256/459 cut-off events. [2024-06-28 00:00:46,224 INFO L125 PetriNetUnfolderBase]: For 3563/3563 co-relation queries the response was YES. [2024-06-28 00:00:46,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2185 conditions, 459 events. 256/459 cut-off events. For 3563/3563 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1720 event pairs, 59 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2147. Up to 433 conditions per place. [2024-06-28 00:00:46,227 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 61 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2024-06-28 00:00:46,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 78 transitions, 768 flow [2024-06-28 00:00:46,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-28 00:00:46,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456221198156682 [2024-06-28 00:00:46,229 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 546 flow. Second operand 7 states and 75 transitions. [2024-06-28 00:00:46,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 78 transitions, 768 flow [2024-06-28 00:00:46,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 78 transitions, 747 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:00:46,234 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 592 flow [2024-06-28 00:00:46,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=592, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-06-28 00:00:46,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-28 00:00:46,235 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 592 flow [2024-06-28 00:00:46,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:46,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:46,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:46,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:00:46,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:46,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:46,236 INFO L85 PathProgramCache]: Analyzing trace with hash 383785557, now seen corresponding path program 3 times [2024-06-28 00:00:46,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:46,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309559640] [2024-06-28 00:00:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:46,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:47,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:47,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309559640] [2024-06-28 00:00:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309559640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:47,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:47,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:47,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542907906] [2024-06-28 00:00:47,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:47,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:47,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:47,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:47,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 592 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:47,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:47,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:47,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:47,598 INFO L124 PetriNetUnfolderBase]: 254/456 cut-off events. [2024-06-28 00:00:47,599 INFO L125 PetriNetUnfolderBase]: For 3985/3985 co-relation queries the response was YES. [2024-06-28 00:00:47,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 456 events. 254/456 cut-off events. For 3985/3985 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1705 event pairs, 59 based on Foata normal form. 1/455 useless extension candidates. Maximal degree in co-relation 2181. Up to 437 conditions per place. [2024-06-28 00:00:47,603 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 63 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-28 00:00:47,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 756 flow [2024-06-28 00:00:47,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-28 00:00:47,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-06-28 00:00:47,605 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 592 flow. Second operand 7 states and 72 transitions. [2024-06-28 00:00:47,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 756 flow [2024-06-28 00:00:47,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 734 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 00:00:47,614 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 599 flow [2024-06-28 00:00:47,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=599, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-06-28 00:00:47,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-28 00:00:47,616 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 599 flow [2024-06-28 00:00:47,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:47,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:47,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:47,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:00:47,617 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:47,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 835546099, now seen corresponding path program 4 times [2024-06-28 00:00:47,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:47,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342494700] [2024-06-28 00:00:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:47,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:49,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:49,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342494700] [2024-06-28 00:00:49,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342494700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:49,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:49,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:49,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835930415] [2024-06-28 00:00:49,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:49,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:49,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:49,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:49,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:49,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 599 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:49,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:49,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:49,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:49,977 INFO L124 PetriNetUnfolderBase]: 263/473 cut-off events. [2024-06-28 00:00:49,978 INFO L125 PetriNetUnfolderBase]: For 4600/4600 co-relation queries the response was YES. [2024-06-28 00:00:49,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 473 events. 263/473 cut-off events. For 4600/4600 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1796 event pairs, 53 based on Foata normal form. 3/474 useless extension candidates. Maximal degree in co-relation 2270. Up to 321 conditions per place. [2024-06-28 00:00:49,982 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 59 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2024-06-28 00:00:49,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 95 transitions, 969 flow [2024-06-28 00:00:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:00:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:00:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 00:00:49,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:00:49,983 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 599 flow. Second operand 8 states and 100 transitions. [2024-06-28 00:00:49,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 95 transitions, 969 flow [2024-06-28 00:00:49,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 95 transitions, 940 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:00:49,992 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 744 flow [2024-06-28 00:00:49,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=744, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2024-06-28 00:00:49,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-28 00:00:49,993 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 744 flow [2024-06-28 00:00:49,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:49,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:49,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:49,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:00:49,994 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:49,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash -947859693, now seen corresponding path program 1 times [2024-06-28 00:00:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:49,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671130220] [2024-06-28 00:00:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:51,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:51,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671130220] [2024-06-28 00:00:51,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671130220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:51,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:51,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:00:51,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558617441] [2024-06-28 00:00:51,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:51,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:00:51,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:00:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:00:51,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:51,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 744 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:51,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:51,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:51,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:52,384 INFO L124 PetriNetUnfolderBase]: 259/467 cut-off events. [2024-06-28 00:00:52,384 INFO L125 PetriNetUnfolderBase]: For 5193/5193 co-relation queries the response was YES. [2024-06-28 00:00:52,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2495 conditions, 467 events. 259/467 cut-off events. For 5193/5193 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1776 event pairs, 59 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 2449. Up to 441 conditions per place. [2024-06-28 00:00:52,389 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-28 00:00:52,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 948 flow [2024-06-28 00:00:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:00:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:00:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 00:00:52,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-28 00:00:52,391 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 744 flow. Second operand 8 states and 81 transitions. [2024-06-28 00:00:52,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 948 flow [2024-06-28 00:00:52,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 868 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 00:00:52,401 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 713 flow [2024-06-28 00:00:52,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=713, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2024-06-28 00:00:52,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-28 00:00:52,402 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 713 flow [2024-06-28 00:00:52,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:52,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:52,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:52,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:00:52,403 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:52,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash 934565398, now seen corresponding path program 1 times [2024-06-28 00:00:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:52,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938684094] [2024-06-28 00:00:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:53,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:53,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938684094] [2024-06-28 00:00:53,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938684094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:53,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:53,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:53,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526270950] [2024-06-28 00:00:53,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:53,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:53,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:54,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:54,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 713 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:54,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:54,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:54,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:54,328 INFO L124 PetriNetUnfolderBase]: 283/507 cut-off events. [2024-06-28 00:00:54,329 INFO L125 PetriNetUnfolderBase]: For 5695/5695 co-relation queries the response was YES. [2024-06-28 00:00:54,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2693 conditions, 507 events. 283/507 cut-off events. For 5695/5695 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1952 event pairs, 65 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 2648. Up to 421 conditions per place. [2024-06-28 00:00:54,334 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 25 changer transitions 0/102 dead transitions. [2024-06-28 00:00:54,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 102 transitions, 1085 flow [2024-06-28 00:00:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 00:00:54,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-28 00:00:54,337 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 713 flow. Second operand 7 states and 83 transitions. [2024-06-28 00:00:54,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 102 transitions, 1085 flow [2024-06-28 00:00:54,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 1056 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:00:54,351 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 837 flow [2024-06-28 00:00:54,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=837, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2024-06-28 00:00:54,351 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-28 00:00:54,352 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 837 flow [2024-06-28 00:00:54,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:54,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:54,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:54,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:00:54,353 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:54,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2100232692, now seen corresponding path program 2 times [2024-06-28 00:00:54,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:54,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203799876] [2024-06-28 00:00:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:55,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:55,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203799876] [2024-06-28 00:00:55,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203799876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:55,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:55,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61511288] [2024-06-28 00:00:55,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:55,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:55,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:55,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:55,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:55,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:55,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 837 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:55,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:55,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:55,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:55,834 INFO L124 PetriNetUnfolderBase]: 279/501 cut-off events. [2024-06-28 00:00:55,834 INFO L125 PetriNetUnfolderBase]: For 6351/6351 co-relation queries the response was YES. [2024-06-28 00:00:55,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 501 events. 279/501 cut-off events. For 6351/6351 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1936 event pairs, 65 based on Foata normal form. 2/501 useless extension candidates. Maximal degree in co-relation 2722. Up to 432 conditions per place. [2024-06-28 00:00:55,838 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 23 changer transitions 0/100 dead transitions. [2024-06-28 00:00:55,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 100 transitions, 1096 flow [2024-06-28 00:00:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 00:00:55,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-28 00:00:55,839 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 837 flow. Second operand 7 states and 82 transitions. [2024-06-28 00:00:55,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 100 transitions, 1096 flow [2024-06-28 00:00:55,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 100 transitions, 1055 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 00:00:55,850 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 849 flow [2024-06-28 00:00:55,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=849, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-06-28 00:00:55,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-28 00:00:55,851 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 849 flow [2024-06-28 00:00:55,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:55,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:55,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:55,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:00:55,852 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:55,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:55,852 INFO L85 PathProgramCache]: Analyzing trace with hash 938374833, now seen corresponding path program 1 times [2024-06-28 00:00:55,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:55,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874008536] [2024-06-28 00:00:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:55,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:56,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874008536] [2024-06-28 00:00:56,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874008536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:56,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:56,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:56,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552004041] [2024-06-28 00:00:56,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:56,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:56,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:56,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:56,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 849 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:56,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:56,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:56,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:56,993 INFO L124 PetriNetUnfolderBase]: 282/506 cut-off events. [2024-06-28 00:00:56,993 INFO L125 PetriNetUnfolderBase]: For 6892/6892 co-relation queries the response was YES. [2024-06-28 00:00:56,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 506 events. 282/506 cut-off events. For 6892/6892 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1954 event pairs, 65 based on Foata normal form. 1/505 useless extension candidates. Maximal degree in co-relation 2817. Up to 442 conditions per place. [2024-06-28 00:00:57,013 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2024-06-28 00:00:57,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 103 transitions, 1143 flow [2024-06-28 00:00:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 00:00:57,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-28 00:00:57,015 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 849 flow. Second operand 7 states and 82 transitions. [2024-06-28 00:00:57,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 103 transitions, 1143 flow [2024-06-28 00:00:57,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 103 transitions, 1092 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:00:57,025 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 904 flow [2024-06-28 00:00:57,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=904, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2024-06-28 00:00:57,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-28 00:00:57,026 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 904 flow [2024-06-28 00:00:57,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:57,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:57,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:57,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:00:57,026 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:57,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 938380413, now seen corresponding path program 2 times [2024-06-28 00:00:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019396968] [2024-06-28 00:00:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:58,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:58,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019396968] [2024-06-28 00:00:58,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019396968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:58,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:58,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:58,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992409715] [2024-06-28 00:00:58,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:58,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:58,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:58,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:58,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:58,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:58,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 904 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:58,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:58,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:58,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:58,423 INFO L124 PetriNetUnfolderBase]: 285/511 cut-off events. [2024-06-28 00:00:58,424 INFO L125 PetriNetUnfolderBase]: For 7615/7615 co-relation queries the response was YES. [2024-06-28 00:00:58,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 511 events. 285/511 cut-off events. For 7615/7615 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1984 event pairs, 65 based on Foata normal form. 1/510 useless extension candidates. Maximal degree in co-relation 2912. Up to 446 conditions per place. [2024-06-28 00:00:58,428 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 77 selfloop transitions, 25 changer transitions 0/104 dead transitions. [2024-06-28 00:00:58,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 104 transitions, 1189 flow [2024-06-28 00:00:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:58,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 00:00:58,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-28 00:00:58,429 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 904 flow. Second operand 7 states and 80 transitions. [2024-06-28 00:00:58,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 104 transitions, 1189 flow [2024-06-28 00:00:58,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 1146 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 00:00:58,445 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 940 flow [2024-06-28 00:00:58,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=940, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-06-28 00:00:58,445 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-28 00:00:58,445 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 940 flow [2024-06-28 00:00:58,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:58,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:58,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:58,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:00:58,446 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:58,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:58,446 INFO L85 PathProgramCache]: Analyzing trace with hash 938380630, now seen corresponding path program 1 times [2024-06-28 00:00:58,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:58,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541762199] [2024-06-28 00:00:58,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:58,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:59,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:59,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541762199] [2024-06-28 00:00:59,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541762199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:59,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:59,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:00:59,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74401992] [2024-06-28 00:00:59,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:59,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:00:59,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:59,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:00:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:00:59,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:00:59,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 940 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:59,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:59,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:00:59,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:00,076 INFO L124 PetriNetUnfolderBase]: 301/537 cut-off events. [2024-06-28 00:01:00,076 INFO L125 PetriNetUnfolderBase]: For 8921/8921 co-relation queries the response was YES. [2024-06-28 00:01:00,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 537 events. 301/537 cut-off events. For 8921/8921 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2105 event pairs, 66 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 3080. Up to 441 conditions per place. [2024-06-28 00:01:00,083 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 83 selfloop transitions, 26 changer transitions 0/111 dead transitions. [2024-06-28 00:01:00,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 111 transitions, 1252 flow [2024-06-28 00:01:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 00:01:00,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 00:01:00,085 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 940 flow. Second operand 9 states and 97 transitions. [2024-06-28 00:01:00,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 111 transitions, 1252 flow [2024-06-28 00:01:00,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 111 transitions, 1215 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:00,105 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 993 flow [2024-06-28 00:01:00,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=993, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2024-06-28 00:01:00,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-28 00:01:00,106 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 993 flow [2024-06-28 00:01:00,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:00,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:00,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:00,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:01:00,107 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:00,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash -249383018, now seen corresponding path program 2 times [2024-06-28 00:01:00,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:00,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328214417] [2024-06-28 00:01:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:00,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:01,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:01,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328214417] [2024-06-28 00:01:01,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328214417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:01,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:01,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:01,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902768012] [2024-06-28 00:01:01,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:01,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:01,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:01,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:01,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 993 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:01,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:01,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:01,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:02,085 INFO L124 PetriNetUnfolderBase]: 304/542 cut-off events. [2024-06-28 00:01:02,086 INFO L125 PetriNetUnfolderBase]: For 9611/9611 co-relation queries the response was YES. [2024-06-28 00:01:02,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3264 conditions, 542 events. 304/542 cut-off events. For 9611/9611 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2137 event pairs, 63 based on Foata normal form. 1/541 useless extension candidates. Maximal degree in co-relation 3211. Up to 504 conditions per place. [2024-06-28 00:01:02,091 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 92 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2024-06-28 00:01:02,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 1303 flow [2024-06-28 00:01:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 00:01:02,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 00:01:02,092 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 993 flow. Second operand 9 states and 90 transitions. [2024-06-28 00:01:02,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 1303 flow [2024-06-28 00:01:02,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 113 transitions, 1273 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:02,107 INFO L231 Difference]: Finished difference. Result has 107 places, 105 transitions, 1038 flow [2024-06-28 00:01:02,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1038, PETRI_PLACES=107, PETRI_TRANSITIONS=105} [2024-06-28 00:01:02,108 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-28 00:01:02,108 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 105 transitions, 1038 flow [2024-06-28 00:01:02,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:02,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:02,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:02,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:01:02,108 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:02,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:02,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1082480410, now seen corresponding path program 3 times [2024-06-28 00:01:02,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:02,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552704471] [2024-06-28 00:01:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:02,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:03,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552704471] [2024-06-28 00:01:03,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552704471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:03,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:03,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227930779] [2024-06-28 00:01:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:03,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:03,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:03,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:03,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:03,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:03,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 105 transitions, 1038 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:03,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:03,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:03,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:03,644 INFO L124 PetriNetUnfolderBase]: 307/547 cut-off events. [2024-06-28 00:01:03,644 INFO L125 PetriNetUnfolderBase]: For 10551/10551 co-relation queries the response was YES. [2024-06-28 00:01:03,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3365 conditions, 547 events. 307/547 cut-off events. For 10551/10551 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2149 event pairs, 63 based on Foata normal form. 1/546 useless extension candidates. Maximal degree in co-relation 3310. Up to 524 conditions per place. [2024-06-28 00:01:03,650 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 98 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2024-06-28 00:01:03,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 114 transitions, 1296 flow [2024-06-28 00:01:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:03,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-06-28 00:01:03,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046594982078853 [2024-06-28 00:01:03,652 INFO L175 Difference]: Start difference. First operand has 107 places, 105 transitions, 1038 flow. Second operand 9 states and 85 transitions. [2024-06-28 00:01:03,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 114 transitions, 1296 flow [2024-06-28 00:01:03,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 1272 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:03,672 INFO L231 Difference]: Finished difference. Result has 111 places, 107 transitions, 1069 flow [2024-06-28 00:01:03,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1069, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2024-06-28 00:01:03,673 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-28 00:01:03,673 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 1069 flow [2024-06-28 00:01:03,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:03,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:03,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:03,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:01:03,674 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:03,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1534353962, now seen corresponding path program 4 times [2024-06-28 00:01:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:03,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457289382] [2024-06-28 00:01:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:03,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:04,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:04,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457289382] [2024-06-28 00:01:04,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457289382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:04,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:04,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:04,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598275407] [2024-06-28 00:01:04,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:04,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:04,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:04,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:04,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:04,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:04,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 1069 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:04,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:04,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:04,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:05,280 INFO L124 PetriNetUnfolderBase]: 305/544 cut-off events. [2024-06-28 00:01:05,281 INFO L125 PetriNetUnfolderBase]: For 11153/11153 co-relation queries the response was YES. [2024-06-28 00:01:05,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3388 conditions, 544 events. 305/544 cut-off events. For 11153/11153 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2137 event pairs, 63 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 3331. Up to 515 conditions per place. [2024-06-28 00:01:05,286 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 17 changer transitions 0/114 dead transitions. [2024-06-28 00:01:05,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 1309 flow [2024-06-28 00:01:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-28 00:01:05,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 00:01:05,288 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 1069 flow. Second operand 8 states and 82 transitions. [2024-06-28 00:01:05,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 1309 flow [2024-06-28 00:01:05,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 114 transitions, 1270 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:05,309 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 1069 flow [2024-06-28 00:01:05,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1069, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-06-28 00:01:05,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-28 00:01:05,310 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 1069 flow [2024-06-28 00:01:05,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:05,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:05,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:05,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:01:05,311 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:05,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:05,311 INFO L85 PathProgramCache]: Analyzing trace with hash -987548325, now seen corresponding path program 3 times [2024-06-28 00:01:05,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:05,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170372264] [2024-06-28 00:01:05,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:05,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:06,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:06,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170372264] [2024-06-28 00:01:06,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170372264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:06,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:06,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:06,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490459864] [2024-06-28 00:01:06,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:06,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:06,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:06,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:06,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:06,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:06,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 1069 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:06,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:06,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:06,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:06,444 INFO L124 PetriNetUnfolderBase]: 302/539 cut-off events. [2024-06-28 00:01:06,444 INFO L125 PetriNetUnfolderBase]: For 11730/11730 co-relation queries the response was YES. [2024-06-28 00:01:06,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3369 conditions, 539 events. 302/539 cut-off events. For 11730/11730 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2116 event pairs, 64 based on Foata normal form. 1/538 useless extension candidates. Maximal degree in co-relation 3311. Up to 516 conditions per place. [2024-06-28 00:01:06,450 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 98 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2024-06-28 00:01:06,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 1305 flow [2024-06-28 00:01:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-28 00:01:06,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33640552995391704 [2024-06-28 00:01:06,451 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 1069 flow. Second operand 7 states and 73 transitions. [2024-06-28 00:01:06,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 1305 flow [2024-06-28 00:01:06,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 113 transitions, 1258 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:06,473 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 1053 flow [2024-06-28 00:01:06,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1053, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-06-28 00:01:06,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-28 00:01:06,473 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 1053 flow [2024-06-28 00:01:06,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:06,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:06,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:06,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:01:06,474 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:06,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:06,475 INFO L85 PathProgramCache]: Analyzing trace with hash 788331322, now seen corresponding path program 3 times [2024-06-28 00:01:06,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:06,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708110916] [2024-06-28 00:01:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:06,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:07,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:07,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708110916] [2024-06-28 00:01:07,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708110916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:07,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:07,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:07,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581507583] [2024-06-28 00:01:07,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:07,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:07,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:07,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:07,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:07,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 1053 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:07,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:07,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:07,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:08,116 INFO L124 PetriNetUnfolderBase]: 307/547 cut-off events. [2024-06-28 00:01:08,116 INFO L125 PetriNetUnfolderBase]: For 12923/12923 co-relation queries the response was YES. [2024-06-28 00:01:08,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3440 conditions, 547 events. 307/547 cut-off events. For 12923/12923 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2157 event pairs, 56 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3381. Up to 391 conditions per place. [2024-06-28 00:01:08,120 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 75 selfloop transitions, 47 changer transitions 0/124 dead transitions. [2024-06-28 00:01:08,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 124 transitions, 1480 flow [2024-06-28 00:01:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-28 00:01:08,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-28 00:01:08,121 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 1053 flow. Second operand 6 states and 87 transitions. [2024-06-28 00:01:08,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 124 transitions, 1480 flow [2024-06-28 00:01:08,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 124 transitions, 1438 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:08,139 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 1202 flow [2024-06-28 00:01:08,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1202, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2024-06-28 00:01:08,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-28 00:01:08,141 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 1202 flow [2024-06-28 00:01:08,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:08,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:08,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:08,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:01:08,141 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:08,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:08,142 INFO L85 PathProgramCache]: Analyzing trace with hash 800443642, now seen corresponding path program 4 times [2024-06-28 00:01:08,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:08,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609019330] [2024-06-28 00:01:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609019330] [2024-06-28 00:01:09,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609019330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:09,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:09,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558973846] [2024-06-28 00:01:09,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:09,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:09,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:09,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:09,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 1202 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:09,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:09,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:09,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:09,609 INFO L124 PetriNetUnfolderBase]: 303/541 cut-off events. [2024-06-28 00:01:09,609 INFO L125 PetriNetUnfolderBase]: For 13539/13539 co-relation queries the response was YES. [2024-06-28 00:01:09,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3559 conditions, 541 events. 303/541 cut-off events. For 13539/13539 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2134 event pairs, 54 based on Foata normal form. 2/541 useless extension candidates. Maximal degree in co-relation 3499. Up to 429 conditions per place. [2024-06-28 00:01:09,615 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 80 selfloop transitions, 39 changer transitions 0/121 dead transitions. [2024-06-28 00:01:09,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 121 transitions, 1514 flow [2024-06-28 00:01:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-28 00:01:09,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:01:09,617 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 1202 flow. Second operand 6 states and 84 transitions. [2024-06-28 00:01:09,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 121 transitions, 1514 flow [2024-06-28 00:01:09,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 121 transitions, 1452 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:09,645 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 1232 flow [2024-06-28 00:01:09,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1232, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2024-06-28 00:01:09,645 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-28 00:01:09,645 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 1232 flow [2024-06-28 00:01:09,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:09,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:09,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:09,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:01:09,646 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:09,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash 132567409, now seen corresponding path program 4 times [2024-06-28 00:01:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:09,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053179005] [2024-06-28 00:01:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:09,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:11,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:11,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053179005] [2024-06-28 00:01:11,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053179005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:11,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:11,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:11,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407566116] [2024-06-28 00:01:11,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:11,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:11,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:11,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:11,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:11,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 1232 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:11,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:11,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:11,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:11,800 INFO L124 PetriNetUnfolderBase]: 306/547 cut-off events. [2024-06-28 00:01:11,800 INFO L125 PetriNetUnfolderBase]: For 13388/13388 co-relation queries the response was YES. [2024-06-28 00:01:11,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3653 conditions, 547 events. 306/547 cut-off events. For 13388/13388 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2172 event pairs, 51 based on Foata normal form. 1/546 useless extension candidates. Maximal degree in co-relation 3592. Up to 372 conditions per place. [2024-06-28 00:01:11,804 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 43 changer transitions 0/127 dead transitions. [2024-06-28 00:01:11,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 127 transitions, 1652 flow [2024-06-28 00:01:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 00:01:11,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:01:11,817 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 1232 flow. Second operand 8 states and 96 transitions. [2024-06-28 00:01:11,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 127 transitions, 1652 flow [2024-06-28 00:01:11,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 127 transitions, 1525 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:11,841 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 1226 flow [2024-06-28 00:01:11,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1226, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2024-06-28 00:01:11,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-28 00:01:11,842 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 1226 flow [2024-06-28 00:01:11,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:11,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:11,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:11,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:01:11,843 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:11,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:11,843 INFO L85 PathProgramCache]: Analyzing trace with hash 132121009, now seen corresponding path program 5 times [2024-06-28 00:01:11,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:11,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850504866] [2024-06-28 00:01:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:11,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:13,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:13,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850504866] [2024-06-28 00:01:13,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850504866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:13,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:13,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:13,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583425236] [2024-06-28 00:01:13,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:13,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:13,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:13,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:13,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:13,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:13,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 1226 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:13,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:13,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:13,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:13,998 INFO L124 PetriNetUnfolderBase]: 306/546 cut-off events. [2024-06-28 00:01:13,998 INFO L125 PetriNetUnfolderBase]: For 12951/12951 co-relation queries the response was YES. [2024-06-28 00:01:14,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 546 events. 306/546 cut-off events. For 12951/12951 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2181 event pairs, 53 based on Foata normal form. 1/545 useless extension candidates. Maximal degree in co-relation 3542. Up to 366 conditions per place. [2024-06-28 00:01:14,003 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 45 changer transitions 0/129 dead transitions. [2024-06-28 00:01:14,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 129 transitions, 1604 flow [2024-06-28 00:01:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 00:01:14,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 00:01:14,005 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 1226 flow. Second operand 8 states and 97 transitions. [2024-06-28 00:01:14,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 129 transitions, 1604 flow [2024-06-28 00:01:14,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 129 transitions, 1535 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:14,026 INFO L231 Difference]: Finished difference. Result has 124 places, 117 transitions, 1318 flow [2024-06-28 00:01:14,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1318, PETRI_PLACES=124, PETRI_TRANSITIONS=117} [2024-06-28 00:01:14,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-28 00:01:14,027 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 117 transitions, 1318 flow [2024-06-28 00:01:14,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:14,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:14,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:14,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:01:14,028 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:14,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:14,028 INFO L85 PathProgramCache]: Analyzing trace with hash 801271184, now seen corresponding path program 5 times [2024-06-28 00:01:14,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:14,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807721515] [2024-06-28 00:01:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:14,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:15,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:15,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807721515] [2024-06-28 00:01:15,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807721515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:15,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:15,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:15,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305035367] [2024-06-28 00:01:15,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:15,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:15,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:15,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:15,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:15,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 117 transitions, 1318 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:15,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:15,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:15,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:16,135 INFO L124 PetriNetUnfolderBase]: 307/547 cut-off events. [2024-06-28 00:01:16,136 INFO L125 PetriNetUnfolderBase]: For 13966/13966 co-relation queries the response was YES. [2024-06-28 00:01:16,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 547 events. 307/547 cut-off events. For 13966/13966 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2174 event pairs, 56 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3613. Up to 395 conditions per place. [2024-06-28 00:01:16,140 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 83 selfloop transitions, 47 changer transitions 0/132 dead transitions. [2024-06-28 00:01:16,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 132 transitions, 1694 flow [2024-06-28 00:01:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 00:01:16,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:01:16,142 INFO L175 Difference]: Start difference. First operand has 124 places, 117 transitions, 1318 flow. Second operand 8 states and 93 transitions. [2024-06-28 00:01:16,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 132 transitions, 1694 flow [2024-06-28 00:01:16,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 132 transitions, 1590 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:16,168 INFO L231 Difference]: Finished difference. Result has 126 places, 122 transitions, 1362 flow [2024-06-28 00:01:16,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1362, PETRI_PLACES=126, PETRI_TRANSITIONS=122} [2024-06-28 00:01:16,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-28 00:01:16,169 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 122 transitions, 1362 flow [2024-06-28 00:01:16,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:16,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:16,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:16,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:01:16,170 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:16,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:16,170 INFO L85 PathProgramCache]: Analyzing trace with hash 679848410, now seen corresponding path program 1 times [2024-06-28 00:01:16,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:16,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802102451] [2024-06-28 00:01:16,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:16,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:18,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:18,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802102451] [2024-06-28 00:01:18,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802102451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:18,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:18,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:18,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839095758] [2024-06-28 00:01:18,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:18,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:18,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:18,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:18,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 122 transitions, 1362 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:18,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:18,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:18,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:18,443 INFO L124 PetriNetUnfolderBase]: 338/608 cut-off events. [2024-06-28 00:01:18,444 INFO L125 PetriNetUnfolderBase]: For 16618/16618 co-relation queries the response was YES. [2024-06-28 00:01:18,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 608 events. 338/608 cut-off events. For 16618/16618 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2559 event pairs, 76 based on Foata normal form. 2/608 useless extension candidates. Maximal degree in co-relation 3983. Up to 470 conditions per place. [2024-06-28 00:01:18,449 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 105 selfloop transitions, 34 changer transitions 0/141 dead transitions. [2024-06-28 00:01:18,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 141 transitions, 1770 flow [2024-06-28 00:01:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:18,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:18,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 00:01:18,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:01:18,450 INFO L175 Difference]: Start difference. First operand has 126 places, 122 transitions, 1362 flow. Second operand 8 states and 93 transitions. [2024-06-28 00:01:18,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 141 transitions, 1770 flow [2024-06-28 00:01:18,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 141 transitions, 1713 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:18,482 INFO L231 Difference]: Finished difference. Result has 131 places, 128 transitions, 1437 flow [2024-06-28 00:01:18,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1437, PETRI_PLACES=131, PETRI_TRANSITIONS=128} [2024-06-28 00:01:18,482 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-28 00:01:18,482 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 128 transitions, 1437 flow [2024-06-28 00:01:18,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:18,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:18,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:18,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:01:18,483 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:18,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1093242252, now seen corresponding path program 1 times [2024-06-28 00:01:18,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:18,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163554714] [2024-06-28 00:01:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:18,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:19,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163554714] [2024-06-28 00:01:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163554714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:19,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:19,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:19,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274165694] [2024-06-28 00:01:19,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:19,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:19,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:20,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:20,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 128 transitions, 1437 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:20,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:20,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:20,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:20,267 INFO L124 PetriNetUnfolderBase]: 346/621 cut-off events. [2024-06-28 00:01:20,267 INFO L125 PetriNetUnfolderBase]: For 16657/16657 co-relation queries the response was YES. [2024-06-28 00:01:20,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4228 conditions, 621 events. 346/621 cut-off events. For 16657/16657 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2616 event pairs, 80 based on Foata normal form. 1/620 useless extension candidates. Maximal degree in co-relation 4159. Up to 524 conditions per place. [2024-06-28 00:01:20,273 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 31 changer transitions 0/142 dead transitions. [2024-06-28 00:01:20,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 142 transitions, 1839 flow [2024-06-28 00:01:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 00:01:20,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 00:01:20,277 INFO L175 Difference]: Start difference. First operand has 131 places, 128 transitions, 1437 flow. Second operand 8 states and 90 transitions. [2024-06-28 00:01:20,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 142 transitions, 1839 flow [2024-06-28 00:01:20,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 142 transitions, 1784 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:20,310 INFO L231 Difference]: Finished difference. Result has 135 places, 132 transitions, 1493 flow [2024-06-28 00:01:20,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1493, PETRI_PLACES=135, PETRI_TRANSITIONS=132} [2024-06-28 00:01:20,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 00:01:20,311 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 132 transitions, 1493 flow [2024-06-28 00:01:20,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:20,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:20,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:20,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:01:20,311 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:20,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash 679908860, now seen corresponding path program 2 times [2024-06-28 00:01:20,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:20,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924581454] [2024-06-28 00:01:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:20,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:21,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:21,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924581454] [2024-06-28 00:01:21,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924581454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:21,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:21,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:21,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140747537] [2024-06-28 00:01:21,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:21,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:21,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:21,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:21,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:22,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:22,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 1493 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:22,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:22,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:22,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:22,370 INFO L124 PetriNetUnfolderBase]: 350/629 cut-off events. [2024-06-28 00:01:22,370 INFO L125 PetriNetUnfolderBase]: For 18237/18237 co-relation queries the response was YES. [2024-06-28 00:01:22,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4318 conditions, 629 events. 350/629 cut-off events. For 18237/18237 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2673 event pairs, 80 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 4247. Up to 535 conditions per place. [2024-06-28 00:01:22,374 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 111 selfloop transitions, 30 changer transitions 0/143 dead transitions. [2024-06-28 00:01:22,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 143 transitions, 1810 flow [2024-06-28 00:01:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:22,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 00:01:22,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 00:01:22,378 INFO L175 Difference]: Start difference. First operand has 135 places, 132 transitions, 1493 flow. Second operand 8 states and 89 transitions. [2024-06-28 00:01:22,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 143 transitions, 1810 flow [2024-06-28 00:01:22,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 143 transitions, 1772 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:22,405 INFO L231 Difference]: Finished difference. Result has 139 places, 133 transitions, 1530 flow [2024-06-28 00:01:22,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1530, PETRI_PLACES=139, PETRI_TRANSITIONS=133} [2024-06-28 00:01:22,405 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-28 00:01:22,406 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 133 transitions, 1530 flow [2024-06-28 00:01:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:22,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:22,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:22,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:01:22,406 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:22,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:22,407 INFO L85 PathProgramCache]: Analyzing trace with hash 682705370, now seen corresponding path program 3 times [2024-06-28 00:01:22,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:22,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050855683] [2024-06-28 00:01:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:22,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:23,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:23,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050855683] [2024-06-28 00:01:23,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050855683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:23,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:23,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:23,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347596347] [2024-06-28 00:01:23,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:23,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:23,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:23,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:23,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:23,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:23,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 133 transitions, 1530 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:23,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:23,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:23,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:24,246 INFO L124 PetriNetUnfolderBase]: 344/619 cut-off events. [2024-06-28 00:01:24,246 INFO L125 PetriNetUnfolderBase]: For 18518/18518 co-relation queries the response was YES. [2024-06-28 00:01:24,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4261 conditions, 619 events. 344/619 cut-off events. For 18518/18518 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2632 event pairs, 78 based on Foata normal form. 4/621 useless extension candidates. Maximal degree in co-relation 4188. Up to 537 conditions per place. [2024-06-28 00:01:24,252 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 29 changer transitions 0/142 dead transitions. [2024-06-28 00:01:24,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 142 transitions, 1832 flow [2024-06-28 00:01:24,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:24,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 00:01:24,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 00:01:24,253 INFO L175 Difference]: Start difference. First operand has 139 places, 133 transitions, 1530 flow. Second operand 8 states and 90 transitions. [2024-06-28 00:01:24,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 142 transitions, 1832 flow [2024-06-28 00:01:24,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 142 transitions, 1768 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:24,290 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 1529 flow [2024-06-28 00:01:24,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1529, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-06-28 00:01:24,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-28 00:01:24,291 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 1529 flow [2024-06-28 00:01:24,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:24,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:24,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:24,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:01:24,292 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:24,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:24,292 INFO L85 PathProgramCache]: Analyzing trace with hash 682705494, now seen corresponding path program 2 times [2024-06-28 00:01:24,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:24,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805715375] [2024-06-28 00:01:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:24,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:25,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:25,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805715375] [2024-06-28 00:01:25,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805715375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:25,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:25,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:25,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203029497] [2024-06-28 00:01:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:25,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:25,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:25,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:25,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:25,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 1529 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:25,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:25,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:25,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:26,154 INFO L124 PetriNetUnfolderBase]: 347/624 cut-off events. [2024-06-28 00:01:26,155 INFO L125 PetriNetUnfolderBase]: For 18172/18172 co-relation queries the response was YES. [2024-06-28 00:01:26,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4320 conditions, 624 events. 347/624 cut-off events. For 18172/18172 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2657 event pairs, 78 based on Foata normal form. 1/623 useless extension candidates. Maximal degree in co-relation 4246. Up to 551 conditions per place. [2024-06-28 00:01:26,161 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 29 changer transitions 0/143 dead transitions. [2024-06-28 00:01:26,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 143 transitions, 1855 flow [2024-06-28 00:01:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 00:01:26,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 00:01:26,162 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 1529 flow. Second operand 8 states and 89 transitions. [2024-06-28 00:01:26,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 143 transitions, 1855 flow [2024-06-28 00:01:26,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 143 transitions, 1794 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:26,201 INFO L231 Difference]: Finished difference. Result has 143 places, 135 transitions, 1559 flow [2024-06-28 00:01:26,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1559, PETRI_PLACES=143, PETRI_TRANSITIONS=135} [2024-06-28 00:01:26,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-28 00:01:26,202 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 135 transitions, 1559 flow [2024-06-28 00:01:26,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:26,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:26,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:26,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:01:26,203 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:26,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 797996664, now seen corresponding path program 3 times [2024-06-28 00:01:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:26,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622214553] [2024-06-28 00:01:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:26,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:27,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:27,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622214553] [2024-06-28 00:01:27,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622214553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:27,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:27,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:27,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026835454] [2024-06-28 00:01:27,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:27,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:27,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:27,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:27,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:27,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 135 transitions, 1559 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:27,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:27,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:27,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:28,121 INFO L124 PetriNetUnfolderBase]: 345/621 cut-off events. [2024-06-28 00:01:28,121 INFO L125 PetriNetUnfolderBase]: For 18711/18711 co-relation queries the response was YES. [2024-06-28 00:01:28,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4301 conditions, 621 events. 345/621 cut-off events. For 18711/18711 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2638 event pairs, 78 based on Foata normal form. 1/620 useless extension candidates. Maximal degree in co-relation 4226. Up to 539 conditions per place. [2024-06-28 00:01:28,128 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 33 changer transitions 0/145 dead transitions. [2024-06-28 00:01:28,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 145 transitions, 1873 flow [2024-06-28 00:01:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 00:01:28,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:01:28,133 INFO L175 Difference]: Start difference. First operand has 143 places, 135 transitions, 1559 flow. Second operand 8 states and 92 transitions. [2024-06-28 00:01:28,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 145 transitions, 1873 flow [2024-06-28 00:01:28,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 145 transitions, 1806 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:28,178 INFO L231 Difference]: Finished difference. Result has 145 places, 135 transitions, 1563 flow [2024-06-28 00:01:28,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1563, PETRI_PLACES=145, PETRI_TRANSITIONS=135} [2024-06-28 00:01:28,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-28 00:01:28,178 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 135 transitions, 1563 flow [2024-06-28 00:01:28,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:28,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:28,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:28,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:01:28,179 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:28,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:28,180 INFO L85 PathProgramCache]: Analyzing trace with hash 798001500, now seen corresponding path program 1 times [2024-06-28 00:01:28,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:28,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526312427] [2024-06-28 00:01:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:28,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:29,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:29,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526312427] [2024-06-28 00:01:29,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526312427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:29,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:29,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621956793] [2024-06-28 00:01:29,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:29,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:29,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:29,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:29,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 135 transitions, 1563 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:29,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:29,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:29,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:30,033 INFO L124 PetriNetUnfolderBase]: 348/626 cut-off events. [2024-06-28 00:01:30,033 INFO L125 PetriNetUnfolderBase]: For 19733/19733 co-relation queries the response was YES. [2024-06-28 00:01:30,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 626 events. 348/626 cut-off events. For 19733/19733 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2679 event pairs, 79 based on Foata normal form. 1/625 useless extension candidates. Maximal degree in co-relation 4290. Up to 527 conditions per place. [2024-06-28 00:01:30,039 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 37 changer transitions 0/147 dead transitions. [2024-06-28 00:01:30,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 147 transitions, 1965 flow [2024-06-28 00:01:30,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:30,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 00:01:30,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 00:01:30,041 INFO L175 Difference]: Start difference. First operand has 145 places, 135 transitions, 1563 flow. Second operand 9 states and 98 transitions. [2024-06-28 00:01:30,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 147 transitions, 1965 flow [2024-06-28 00:01:30,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 147 transitions, 1870 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:30,087 INFO L231 Difference]: Finished difference. Result has 147 places, 137 transitions, 1567 flow [2024-06-28 00:01:30,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1567, PETRI_PLACES=147, PETRI_TRANSITIONS=137} [2024-06-28 00:01:30,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-28 00:01:30,088 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 137 transitions, 1567 flow [2024-06-28 00:01:30,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:30,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:30,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:30,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:01:30,088 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:30,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:30,089 INFO L85 PathProgramCache]: Analyzing trace with hash 798181238, now seen corresponding path program 1 times [2024-06-28 00:01:30,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:30,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591540716] [2024-06-28 00:01:30,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:30,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:32,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:32,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591540716] [2024-06-28 00:01:32,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591540716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:32,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:32,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:32,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11563063] [2024-06-28 00:01:32,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:32,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:32,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:32,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:32,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:32,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 137 transitions, 1567 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:32,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:32,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:32,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:32,741 INFO L124 PetriNetUnfolderBase]: 380/678 cut-off events. [2024-06-28 00:01:32,741 INFO L125 PetriNetUnfolderBase]: For 24936/24936 co-relation queries the response was YES. [2024-06-28 00:01:32,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4699 conditions, 678 events. 380/678 cut-off events. For 24936/24936 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2929 event pairs, 85 based on Foata normal form. 4/680 useless extension candidates. Maximal degree in co-relation 4622. Up to 522 conditions per place. [2024-06-28 00:01:32,748 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 122 selfloop transitions, 32 changer transitions 0/156 dead transitions. [2024-06-28 00:01:32,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 156 transitions, 2017 flow [2024-06-28 00:01:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 00:01:32,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 00:01:32,750 INFO L175 Difference]: Start difference. First operand has 147 places, 137 transitions, 1567 flow. Second operand 9 states and 106 transitions. [2024-06-28 00:01:32,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 156 transitions, 2017 flow [2024-06-28 00:01:32,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 156 transitions, 1933 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:32,825 INFO L231 Difference]: Finished difference. Result has 149 places, 142 transitions, 1593 flow [2024-06-28 00:01:32,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1593, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2024-06-28 00:01:32,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-28 00:01:32,826 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 1593 flow [2024-06-28 00:01:32,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:32,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:32,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:32,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:01:32,826 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:32,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:32,827 INFO L85 PathProgramCache]: Analyzing trace with hash 798180990, now seen corresponding path program 2 times [2024-06-28 00:01:32,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:32,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215457882] [2024-06-28 00:01:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:32,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:34,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:34,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215457882] [2024-06-28 00:01:34,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215457882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:34,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:34,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:34,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688873106] [2024-06-28 00:01:34,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:34,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:34,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:34,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:34,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:34,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:34,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 142 transitions, 1593 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:34,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:34,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:34,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:34,823 INFO L124 PetriNetUnfolderBase]: 388/691 cut-off events. [2024-06-28 00:01:34,823 INFO L125 PetriNetUnfolderBase]: For 25162/25162 co-relation queries the response was YES. [2024-06-28 00:01:34,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4899 conditions, 691 events. 388/691 cut-off events. For 25162/25162 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3019 event pairs, 82 based on Foata normal form. 1/690 useless extension candidates. Maximal degree in co-relation 4821. Up to 589 conditions per place. [2024-06-28 00:01:34,848 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 37 changer transitions 0/156 dead transitions. [2024-06-28 00:01:34,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 156 transitions, 2105 flow [2024-06-28 00:01:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 00:01:34,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 00:01:34,868 INFO L175 Difference]: Start difference. First operand has 149 places, 142 transitions, 1593 flow. Second operand 9 states and 97 transitions. [2024-06-28 00:01:34,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 156 transitions, 2105 flow [2024-06-28 00:01:34,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 156 transitions, 2064 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:34,939 INFO L231 Difference]: Finished difference. Result has 153 places, 146 transitions, 1672 flow [2024-06-28 00:01:34,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1672, PETRI_PLACES=153, PETRI_TRANSITIONS=146} [2024-06-28 00:01:34,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 00:01:34,941 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 146 transitions, 1672 flow [2024-06-28 00:01:34,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:34,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:34,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:34,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:01:34,941 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:34,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:34,941 INFO L85 PathProgramCache]: Analyzing trace with hash -974976756, now seen corresponding path program 3 times [2024-06-28 00:01:34,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:34,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126986362] [2024-06-28 00:01:34,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:34,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:36,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:36,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126986362] [2024-06-28 00:01:36,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126986362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:36,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:36,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:36,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285799874] [2024-06-28 00:01:36,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:36,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:36,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:36,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:36,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:36,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:36,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 146 transitions, 1672 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:36,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:36,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:36,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:36,421 INFO L124 PetriNetUnfolderBase]: 386/688 cut-off events. [2024-06-28 00:01:36,421 INFO L125 PetriNetUnfolderBase]: For 25912/25912 co-relation queries the response was YES. [2024-06-28 00:01:36,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4928 conditions, 688 events. 386/688 cut-off events. For 25912/25912 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2981 event pairs, 83 based on Foata normal form. 1/687 useless extension candidates. Maximal degree in co-relation 4848. Up to 587 conditions per place. [2024-06-28 00:01:36,427 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 36 changer transitions 0/155 dead transitions. [2024-06-28 00:01:36,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 155 transitions, 2072 flow [2024-06-28 00:01:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 00:01:36,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 00:01:36,429 INFO L175 Difference]: Start difference. First operand has 153 places, 146 transitions, 1672 flow. Second operand 9 states and 97 transitions. [2024-06-28 00:01:36,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 155 transitions, 2072 flow [2024-06-28 00:01:36,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 155 transitions, 2017 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:36,484 INFO L231 Difference]: Finished difference. Result has 157 places, 146 transitions, 1694 flow [2024-06-28 00:01:36,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1694, PETRI_PLACES=157, PETRI_TRANSITIONS=146} [2024-06-28 00:01:36,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-28 00:01:36,484 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 146 transitions, 1694 flow [2024-06-28 00:01:36,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:36,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:36,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:01:36,485 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:36,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1120623682, now seen corresponding path program 2 times [2024-06-28 00:01:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:36,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990438883] [2024-06-28 00:01:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:36,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:38,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990438883] [2024-06-28 00:01:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990438883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:38,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:38,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175702411] [2024-06-28 00:01:38,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:38,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:38,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:38,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 146 transitions, 1694 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:38,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:38,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:38,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:38,685 INFO L124 PetriNetUnfolderBase]: 392/698 cut-off events. [2024-06-28 00:01:38,685 INFO L125 PetriNetUnfolderBase]: For 28131/28131 co-relation queries the response was YES. [2024-06-28 00:01:38,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5020 conditions, 698 events. 392/698 cut-off events. For 28131/28131 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3041 event pairs, 80 based on Foata normal form. 2/698 useless extension candidates. Maximal degree in co-relation 4939. Up to 633 conditions per place. [2024-06-28 00:01:38,692 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 24 changer transitions 0/162 dead transitions. [2024-06-28 00:01:38,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 162 transitions, 2150 flow [2024-06-28 00:01:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 00:01:38,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 00:01:38,693 INFO L175 Difference]: Start difference. First operand has 157 places, 146 transitions, 1694 flow. Second operand 10 states and 103 transitions. [2024-06-28 00:01:38,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 162 transitions, 2150 flow [2024-06-28 00:01:38,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 162 transitions, 2068 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:01:38,772 INFO L231 Difference]: Finished difference. Result has 159 places, 150 transitions, 1705 flow [2024-06-28 00:01:38,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1705, PETRI_PLACES=159, PETRI_TRANSITIONS=150} [2024-06-28 00:01:38,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-28 00:01:38,773 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 150 transitions, 1705 flow [2024-06-28 00:01:38,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:38,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:38,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:38,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:01:38,773 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:38,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash -549218732, now seen corresponding path program 3 times [2024-06-28 00:01:38,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:38,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222828869] [2024-06-28 00:01:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:38,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:40,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:40,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222828869] [2024-06-28 00:01:40,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222828869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:40,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:40,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:40,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106418850] [2024-06-28 00:01:40,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:40,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:40,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:40,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:40,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 150 transitions, 1705 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:40,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:40,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:40,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:40,802 INFO L124 PetriNetUnfolderBase]: 403/716 cut-off events. [2024-06-28 00:01:40,802 INFO L125 PetriNetUnfolderBase]: For 30188/30188 co-relation queries the response was YES. [2024-06-28 00:01:40,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5177 conditions, 716 events. 403/716 cut-off events. For 30188/30188 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3121 event pairs, 82 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 5095. Up to 664 conditions per place. [2024-06-28 00:01:40,810 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 23 changer transitions 0/167 dead transitions. [2024-06-28 00:01:40,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 167 transitions, 2194 flow [2024-06-28 00:01:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 00:01:40,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-28 00:01:40,821 INFO L175 Difference]: Start difference. First operand has 159 places, 150 transitions, 1705 flow. Second operand 10 states and 101 transitions. [2024-06-28 00:01:40,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 167 transitions, 2194 flow [2024-06-28 00:01:40,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 167 transitions, 2162 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:40,881 INFO L231 Difference]: Finished difference. Result has 165 places, 156 transitions, 1794 flow [2024-06-28 00:01:40,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1794, PETRI_PLACES=165, PETRI_TRANSITIONS=156} [2024-06-28 00:01:40,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-28 00:01:40,882 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 156 transitions, 1794 flow [2024-06-28 00:01:40,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:40,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:40,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:40,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:01:40,883 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:40,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:40,884 INFO L85 PathProgramCache]: Analyzing trace with hash -549218980, now seen corresponding path program 4 times [2024-06-28 00:01:40,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:40,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198906729] [2024-06-28 00:01:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:40,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198906729] [2024-06-28 00:01:42,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198906729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:42,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:42,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:42,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460353555] [2024-06-28 00:01:42,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:42,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:42,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:42,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:42,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:42,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:42,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 156 transitions, 1794 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:42,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:42,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:42,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:42,617 INFO L124 PetriNetUnfolderBase]: 411/729 cut-off events. [2024-06-28 00:01:42,617 INFO L125 PetriNetUnfolderBase]: For 31805/31805 co-relation queries the response was YES. [2024-06-28 00:01:42,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5377 conditions, 729 events. 411/729 cut-off events. For 31805/31805 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3197 event pairs, 83 based on Foata normal form. 1/728 useless extension candidates. Maximal degree in co-relation 5292. Up to 686 conditions per place. [2024-06-28 00:01:42,624 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 145 selfloop transitions, 22 changer transitions 0/169 dead transitions. [2024-06-28 00:01:42,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 169 transitions, 2348 flow [2024-06-28 00:01:42,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 00:01:42,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-28 00:01:42,626 INFO L175 Difference]: Start difference. First operand has 165 places, 156 transitions, 1794 flow. Second operand 9 states and 92 transitions. [2024-06-28 00:01:42,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 169 transitions, 2348 flow [2024-06-28 00:01:42,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 169 transitions, 2316 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:42,712 INFO L231 Difference]: Finished difference. Result has 169 places, 160 transitions, 1855 flow [2024-06-28 00:01:42,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1855, PETRI_PLACES=169, PETRI_TRANSITIONS=160} [2024-06-28 00:01:42,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-28 00:01:42,713 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 160 transitions, 1855 flow [2024-06-28 00:01:42,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:42,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:42,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:42,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:01:42,714 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:42,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:42,714 INFO L85 PathProgramCache]: Analyzing trace with hash -368636340, now seen corresponding path program 5 times [2024-06-28 00:01:42,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:42,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816465883] [2024-06-28 00:01:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:42,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:44,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:44,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816465883] [2024-06-28 00:01:44,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816465883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:44,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:44,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:44,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085811962] [2024-06-28 00:01:44,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:44,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:44,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:44,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:44,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:44,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 160 transitions, 1855 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:44,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:44,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:44,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:44,468 INFO L124 PetriNetUnfolderBase]: 409/726 cut-off events. [2024-06-28 00:01:44,469 INFO L125 PetriNetUnfolderBase]: For 32451/32451 co-relation queries the response was YES. [2024-06-28 00:01:44,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5380 conditions, 726 events. 409/726 cut-off events. For 32451/32451 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3191 event pairs, 83 based on Foata normal form. 1/725 useless extension candidates. Maximal degree in co-relation 5293. Up to 684 conditions per place. [2024-06-28 00:01:44,477 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 143 selfloop transitions, 23 changer transitions 0/168 dead transitions. [2024-06-28 00:01:44,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 2285 flow [2024-06-28 00:01:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 00:01:44,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-28 00:01:44,478 INFO L175 Difference]: Start difference. First operand has 169 places, 160 transitions, 1855 flow. Second operand 8 states and 85 transitions. [2024-06-28 00:01:44,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 2285 flow [2024-06-28 00:01:44,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 168 transitions, 2226 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:44,542 INFO L231 Difference]: Finished difference. Result has 171 places, 160 transitions, 1847 flow [2024-06-28 00:01:44,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1847, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2024-06-28 00:01:44,543 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-28 00:01:44,543 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 1847 flow [2024-06-28 00:01:44,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:44,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:44,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:44,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:01:44,544 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:44,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash -360058702, now seen corresponding path program 4 times [2024-06-28 00:01:44,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:44,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159903814] [2024-06-28 00:01:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:44,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:46,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:46,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159903814] [2024-06-28 00:01:46,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159903814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:46,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:46,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:46,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220644220] [2024-06-28 00:01:46,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:46,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:46,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:46,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:46,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:46,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:46,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 1847 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:46,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:46,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:46,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:46,523 INFO L124 PetriNetUnfolderBase]: 413/733 cut-off events. [2024-06-28 00:01:46,523 INFO L125 PetriNetUnfolderBase]: For 34825/34825 co-relation queries the response was YES. [2024-06-28 00:01:46,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5410 conditions, 733 events. 413/733 cut-off events. For 34825/34825 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3222 event pairs, 80 based on Foata normal form. 3/734 useless extension candidates. Maximal degree in co-relation 5322. Up to 698 conditions per place. [2024-06-28 00:01:46,531 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 19 changer transitions 0/171 dead transitions. [2024-06-28 00:01:46,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 171 transitions, 2233 flow [2024-06-28 00:01:46,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-28 00:01:46,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-28 00:01:46,532 INFO L175 Difference]: Start difference. First operand has 171 places, 160 transitions, 1847 flow. Second operand 10 states and 95 transitions. [2024-06-28 00:01:46,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 171 transitions, 2233 flow [2024-06-28 00:01:46,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 171 transitions, 2168 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:46,599 INFO L231 Difference]: Finished difference. Result has 174 places, 162 transitions, 1858 flow [2024-06-28 00:01:46,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1858, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2024-06-28 00:01:46,600 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 00:01:46,600 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 1858 flow [2024-06-28 00:01:46,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:46,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:46,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:46,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:01:46,600 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:46,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash 550253112, now seen corresponding path program 6 times [2024-06-28 00:01:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:46,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691195096] [2024-06-28 00:01:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:46,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:47,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:47,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691195096] [2024-06-28 00:01:47,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691195096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:47,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:47,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748320861] [2024-06-28 00:01:47,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:47,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:47,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:47,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:47,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:47,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:47,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 1858 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:47,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:47,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:47,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:48,180 INFO L124 PetriNetUnfolderBase]: 411/730 cut-off events. [2024-06-28 00:01:48,181 INFO L125 PetriNetUnfolderBase]: For 33898/33898 co-relation queries the response was YES. [2024-06-28 00:01:48,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5386 conditions, 730 events. 411/730 cut-off events. For 33898/33898 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3202 event pairs, 81 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 5297. Up to 704 conditions per place. [2024-06-28 00:01:48,189 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 152 selfloop transitions, 15 changer transitions 0/169 dead transitions. [2024-06-28 00:01:48,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 169 transitions, 2208 flow [2024-06-28 00:01:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:48,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-28 00:01:48,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30824372759856633 [2024-06-28 00:01:48,190 INFO L175 Difference]: Start difference. First operand has 174 places, 162 transitions, 1858 flow. Second operand 9 states and 86 transitions. [2024-06-28 00:01:48,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 169 transitions, 2208 flow [2024-06-28 00:01:48,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 169 transitions, 2124 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:01:48,281 INFO L231 Difference]: Finished difference. Result has 174 places, 162 transitions, 1809 flow [2024-06-28 00:01:48,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1809, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2024-06-28 00:01:48,282 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 00:01:48,282 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 1809 flow [2024-06-28 00:01:48,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:48,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:48,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:48,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:01:48,283 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:48,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:48,283 INFO L85 PathProgramCache]: Analyzing trace with hash -360355372, now seen corresponding path program 5 times [2024-06-28 00:01:48,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:48,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669625129] [2024-06-28 00:01:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:48,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:50,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:50,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669625129] [2024-06-28 00:01:50,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669625129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:50,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:50,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:50,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039725424] [2024-06-28 00:01:50,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:50,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:50,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:50,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:50,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:50,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 1809 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:50,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:50,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:50,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:50,603 INFO L124 PetriNetUnfolderBase]: 407/724 cut-off events. [2024-06-28 00:01:50,603 INFO L125 PetriNetUnfolderBase]: For 34267/34267 co-relation queries the response was YES. [2024-06-28 00:01:50,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5247 conditions, 724 events. 407/724 cut-off events. For 34267/34267 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3187 event pairs, 79 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 5158. Up to 680 conditions per place. [2024-06-28 00:01:50,611 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 22 changer transitions 0/172 dead transitions. [2024-06-28 00:01:50,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 172 transitions, 2175 flow [2024-06-28 00:01:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 00:01:50,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:01:50,612 INFO L175 Difference]: Start difference. First operand has 174 places, 162 transitions, 1809 flow. Second operand 9 states and 93 transitions. [2024-06-28 00:01:50,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 172 transitions, 2175 flow [2024-06-28 00:01:50,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 172 transitions, 2121 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:01:50,677 INFO L231 Difference]: Finished difference. Result has 174 places, 162 transitions, 1804 flow [2024-06-28 00:01:50,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1804, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2024-06-28 00:01:50,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 00:01:50,677 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 1804 flow [2024-06-28 00:01:50,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:50,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:50,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:50,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:01:50,677 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:50,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:50,678 INFO L85 PathProgramCache]: Analyzing trace with hash -968679846, now seen corresponding path program 4 times [2024-06-28 00:01:50,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:50,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35199366] [2024-06-28 00:01:50,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:50,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:52,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:52,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35199366] [2024-06-28 00:01:52,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35199366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:52,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:52,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:52,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088120219] [2024-06-28 00:01:52,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:52,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:52,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:52,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:52,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:52,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 1804 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:52,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:52,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:52,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:52,541 INFO L124 PetriNetUnfolderBase]: 418/745 cut-off events. [2024-06-28 00:01:52,541 INFO L125 PetriNetUnfolderBase]: For 37783/37783 co-relation queries the response was YES. [2024-06-28 00:01:52,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5455 conditions, 745 events. 418/745 cut-off events. For 37783/37783 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3297 event pairs, 34 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 5365. Up to 472 conditions per place. [2024-06-28 00:01:52,549 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 115 selfloop transitions, 61 changer transitions 0/178 dead transitions. [2024-06-28 00:01:52,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 178 transitions, 2300 flow [2024-06-28 00:01:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:52,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 00:01:52,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-28 00:01:52,552 INFO L175 Difference]: Start difference. First operand has 174 places, 162 transitions, 1804 flow. Second operand 8 states and 101 transitions. [2024-06-28 00:01:52,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 178 transitions, 2300 flow [2024-06-28 00:01:52,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 178 transitions, 2238 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:01:52,648 INFO L231 Difference]: Finished difference. Result has 175 places, 164 transitions, 1913 flow [2024-06-28 00:01:52,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1913, PETRI_PLACES=175, PETRI_TRANSITIONS=164} [2024-06-28 00:01:52,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 00:01:52,649 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 164 transitions, 1913 flow [2024-06-28 00:01:52,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:52,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:52,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:52,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:01:52,649 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:52,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:52,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1331531436, now seen corresponding path program 5 times [2024-06-28 00:01:52,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:52,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903713142] [2024-06-28 00:01:52,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:52,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:54,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:54,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903713142] [2024-06-28 00:01:54,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903713142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:54,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:54,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:54,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246844221] [2024-06-28 00:01:54,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:54,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:54,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:54,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:54,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:54,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 164 transitions, 1913 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:54,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:54,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:54,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:54,576 INFO L124 PetriNetUnfolderBase]: 422/753 cut-off events. [2024-06-28 00:01:54,577 INFO L125 PetriNetUnfolderBase]: For 39908/39908 co-relation queries the response was YES. [2024-06-28 00:01:54,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5693 conditions, 753 events. 422/753 cut-off events. For 39908/39908 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3370 event pairs, 55 based on Foata normal form. 2/753 useless extension candidates. Maximal degree in co-relation 5602. Up to 577 conditions per place. [2024-06-28 00:01:54,584 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 122 selfloop transitions, 53 changer transitions 0/177 dead transitions. [2024-06-28 00:01:54,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 177 transitions, 2308 flow [2024-06-28 00:01:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 00:01:54,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:01:54,585 INFO L175 Difference]: Start difference. First operand has 175 places, 164 transitions, 1913 flow. Second operand 8 states and 100 transitions. [2024-06-28 00:01:54,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 177 transitions, 2308 flow [2024-06-28 00:01:54,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 177 transitions, 2182 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:54,663 INFO L231 Difference]: Finished difference. Result has 177 places, 165 transitions, 1917 flow [2024-06-28 00:01:54,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1917, PETRI_PLACES=177, PETRI_TRANSITIONS=165} [2024-06-28 00:01:54,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-28 00:01:54,664 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 165 transitions, 1917 flow [2024-06-28 00:01:54,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:54,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:54,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:54,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:01:54,664 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:54,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:54,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1331531312, now seen corresponding path program 4 times [2024-06-28 00:01:54,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:54,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206194352] [2024-06-28 00:01:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:54,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:55,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:55,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206194352] [2024-06-28 00:01:55,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206194352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:55,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:55,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:55,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454359911] [2024-06-28 00:01:55,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:55,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:55,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:55,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:55,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:56,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:56,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 165 transitions, 1917 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:56,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:56,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:56,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:56,317 INFO L124 PetriNetUnfolderBase]: 425/758 cut-off events. [2024-06-28 00:01:56,317 INFO L125 PetriNetUnfolderBase]: For 38847/38847 co-relation queries the response was YES. [2024-06-28 00:01:56,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5676 conditions, 758 events. 425/758 cut-off events. For 38847/38847 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3398 event pairs, 55 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 5585. Up to 575 conditions per place. [2024-06-28 00:01:56,325 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 119 selfloop transitions, 58 changer transitions 0/179 dead transitions. [2024-06-28 00:01:56,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 179 transitions, 2415 flow [2024-06-28 00:01:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-28 00:01:56,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377880184331797 [2024-06-28 00:01:56,327 INFO L175 Difference]: Start difference. First operand has 177 places, 165 transitions, 1917 flow. Second operand 7 states and 95 transitions. [2024-06-28 00:01:56,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 179 transitions, 2415 flow [2024-06-28 00:01:56,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 179 transitions, 2285 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:01:56,405 INFO L231 Difference]: Finished difference. Result has 176 places, 167 transitions, 1940 flow [2024-06-28 00:01:56,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1940, PETRI_PLACES=176, PETRI_TRANSITIONS=167} [2024-06-28 00:01:56,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-28 00:01:56,406 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 167 transitions, 1940 flow [2024-06-28 00:01:56,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:56,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:56,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:56,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:01:56,406 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:56,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash -956049392, now seen corresponding path program 5 times [2024-06-28 00:01:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:56,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876298189] [2024-06-28 00:01:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:56,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:57,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:57,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876298189] [2024-06-28 00:01:57,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876298189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:57,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:57,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:57,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129616156] [2024-06-28 00:01:57,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:57,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:57,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:57,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:57,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:57,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:57,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 167 transitions, 1940 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:57,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:57,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:57,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:58,184 INFO L124 PetriNetUnfolderBase]: 428/763 cut-off events. [2024-06-28 00:01:58,185 INFO L125 PetriNetUnfolderBase]: For 38844/38844 co-relation queries the response was YES. [2024-06-28 00:01:58,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5670 conditions, 763 events. 428/763 cut-off events. For 38844/38844 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3432 event pairs, 53 based on Foata normal form. 1/762 useless extension candidates. Maximal degree in co-relation 5581. Up to 641 conditions per place. [2024-06-28 00:01:58,192 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 128 selfloop transitions, 48 changer transitions 0/178 dead transitions. [2024-06-28 00:01:58,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 178 transitions, 2342 flow [2024-06-28 00:01:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 00:01:58,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 00:01:58,193 INFO L175 Difference]: Start difference. First operand has 176 places, 167 transitions, 1940 flow. Second operand 8 states and 98 transitions. [2024-06-28 00:01:58,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 178 transitions, 2342 flow [2024-06-28 00:01:58,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 178 transitions, 2247 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:58,292 INFO L231 Difference]: Finished difference. Result has 179 places, 169 transitions, 1981 flow [2024-06-28 00:01:58,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1981, PETRI_PLACES=179, PETRI_TRANSITIONS=169} [2024-06-28 00:01:58,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-28 00:01:58,292 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 169 transitions, 1981 flow [2024-06-28 00:01:58,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:58,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:58,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:58,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:01:58,293 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:58,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1328734926, now seen corresponding path program 6 times [2024-06-28 00:01:58,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:58,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864893210] [2024-06-28 00:01:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:58,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:59,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:59,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864893210] [2024-06-28 00:01:59,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864893210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:59,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:59,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:59,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696737150] [2024-06-28 00:01:59,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:59,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:59,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:59,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:59,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:59,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 169 transitions, 1981 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:59,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:59,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:59,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:00,196 INFO L124 PetriNetUnfolderBase]: 422/753 cut-off events. [2024-06-28 00:02:00,196 INFO L125 PetriNetUnfolderBase]: For 37893/37893 co-relation queries the response was YES. [2024-06-28 00:02:00,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5451 conditions, 753 events. 422/753 cut-off events. For 37893/37893 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3377 event pairs, 51 based on Foata normal form. 4/755 useless extension candidates. Maximal degree in co-relation 5361. Up to 613 conditions per place. [2024-06-28 00:02:00,202 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 129 selfloop transitions, 48 changer transitions 0/179 dead transitions. [2024-06-28 00:02:00,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 179 transitions, 2359 flow [2024-06-28 00:02:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 00:02:00,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-28 00:02:00,204 INFO L175 Difference]: Start difference. First operand has 179 places, 169 transitions, 1981 flow. Second operand 8 states and 99 transitions. [2024-06-28 00:02:00,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 179 transitions, 2359 flow [2024-06-28 00:02:00,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 179 transitions, 2252 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:00,278 INFO L231 Difference]: Finished difference. Result has 180 places, 169 transitions, 1978 flow [2024-06-28 00:02:00,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1978, PETRI_PLACES=180, PETRI_TRANSITIONS=169} [2024-06-28 00:02:00,279 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-28 00:02:00,279 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 169 transitions, 1978 flow [2024-06-28 00:02:00,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:00,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:00,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:00,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:02:00,280 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:00,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:00,280 INFO L85 PathProgramCache]: Analyzing trace with hash -191175770, now seen corresponding path program 6 times [2024-06-28 00:02:00,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:00,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318677469] [2024-06-28 00:02:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:00,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:01,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:01,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318677469] [2024-06-28 00:02:01,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318677469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:01,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:01,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:01,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405617506] [2024-06-28 00:02:01,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:01,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:01,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:01,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:01,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:01,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 169 transitions, 1978 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:01,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:01,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:01,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:01,964 INFO L124 PetriNetUnfolderBase]: 420/752 cut-off events. [2024-06-28 00:02:01,965 INFO L125 PetriNetUnfolderBase]: For 33725/33725 co-relation queries the response was YES. [2024-06-28 00:02:01,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5399 conditions, 752 events. 420/752 cut-off events. For 33725/33725 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3397 event pairs, 52 based on Foata normal form. 1/751 useless extension candidates. Maximal degree in co-relation 5309. Up to 603 conditions per place. [2024-06-28 00:02:01,972 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 125 selfloop transitions, 56 changer transitions 0/183 dead transitions. [2024-06-28 00:02:01,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 183 transitions, 2386 flow [2024-06-28 00:02:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 00:02:01,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-28 00:02:01,973 INFO L175 Difference]: Start difference. First operand has 180 places, 169 transitions, 1978 flow. Second operand 8 states and 105 transitions. [2024-06-28 00:02:01,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 183 transitions, 2386 flow [2024-06-28 00:02:02,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 183 transitions, 2263 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:02,041 INFO L231 Difference]: Finished difference. Result has 180 places, 169 transitions, 1975 flow [2024-06-28 00:02:02,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1975, PETRI_PLACES=180, PETRI_TRANSITIONS=169} [2024-06-28 00:02:02,041 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-28 00:02:02,042 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 169 transitions, 1975 flow [2024-06-28 00:02:02,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:02,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:02,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:02,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:02:02,042 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:02,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash -199041524, now seen corresponding path program 7 times [2024-06-28 00:02:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169455248] [2024-06-28 00:02:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:02,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:03,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:03,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169455248] [2024-06-28 00:02:03,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169455248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:03,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:03,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:03,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663615367] [2024-06-28 00:02:03,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:03,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:03,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:03,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:03,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:03,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 169 transitions, 1975 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:03,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:03,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:03,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:04,060 INFO L124 PetriNetUnfolderBase]: 428/763 cut-off events. [2024-06-28 00:02:04,061 INFO L125 PetriNetUnfolderBase]: For 34642/34642 co-relation queries the response was YES. [2024-06-28 00:02:04,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5478 conditions, 763 events. 428/763 cut-off events. For 34642/34642 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3455 event pairs, 52 based on Foata normal form. 1/762 useless extension candidates. Maximal degree in co-relation 5388. Up to 604 conditions per place. [2024-06-28 00:02:04,068 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 132 selfloop transitions, 52 changer transitions 0/186 dead transitions. [2024-06-28 00:02:04,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 186 transitions, 2587 flow [2024-06-28 00:02:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 00:02:04,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 00:02:04,069 INFO L175 Difference]: Start difference. First operand has 180 places, 169 transitions, 1975 flow. Second operand 9 states and 105 transitions. [2024-06-28 00:02:04,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 186 transitions, 2587 flow [2024-06-28 00:02:04,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 186 transitions, 2368 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 00:02:04,167 INFO L231 Difference]: Finished difference. Result has 179 places, 173 transitions, 1901 flow [2024-06-28 00:02:04,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1901, PETRI_PLACES=179, PETRI_TRANSITIONS=173} [2024-06-28 00:02:04,168 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-28 00:02:04,168 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 173 transitions, 1901 flow [2024-06-28 00:02:04,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:04,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:04,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:04,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:02:04,169 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:04,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:04,170 INFO L85 PathProgramCache]: Analyzing trace with hash -199035014, now seen corresponding path program 8 times [2024-06-28 00:02:04,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:04,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307745666] [2024-06-28 00:02:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:04,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:05,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:05,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307745666] [2024-06-28 00:02:05,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307745666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:05,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:05,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:05,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487100936] [2024-06-28 00:02:05,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:05,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:05,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:05,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:05,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 173 transitions, 1901 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:05,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:05,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:05,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:06,327 INFO L124 PetriNetUnfolderBase]: 426/760 cut-off events. [2024-06-28 00:02:06,327 INFO L125 PetriNetUnfolderBase]: For 33421/33421 co-relation queries the response was YES. [2024-06-28 00:02:06,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5231 conditions, 760 events. 426/760 cut-off events. For 33421/33421 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3425 event pairs, 52 based on Foata normal form. 1/759 useless extension candidates. Maximal degree in co-relation 5143. Up to 602 conditions per place. [2024-06-28 00:02:06,338 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 131 selfloop transitions, 52 changer transitions 0/185 dead transitions. [2024-06-28 00:02:06,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 185 transitions, 2387 flow [2024-06-28 00:02:06,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 00:02:06,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 00:02:06,343 INFO L175 Difference]: Start difference. First operand has 179 places, 173 transitions, 1901 flow. Second operand 8 states and 98 transitions. [2024-06-28 00:02:06,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 185 transitions, 2387 flow [2024-06-28 00:02:06,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 185 transitions, 2248 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:06,440 INFO L231 Difference]: Finished difference. Result has 180 places, 173 transitions, 1871 flow [2024-06-28 00:02:06,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1871, PETRI_PLACES=180, PETRI_TRANSITIONS=173} [2024-06-28 00:02:06,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-28 00:02:06,441 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 173 transitions, 1871 flow [2024-06-28 00:02:06,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:06,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:06,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:06,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:02:06,442 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:06,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:06,442 INFO L85 PathProgramCache]: Analyzing trace with hash -199034766, now seen corresponding path program 6 times [2024-06-28 00:02:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:06,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773486817] [2024-06-28 00:02:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:06,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:08,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:08,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773486817] [2024-06-28 00:02:08,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773486817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:08,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:08,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:08,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091532219] [2024-06-28 00:02:08,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:08,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:08,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:08,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:08,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:08,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:08,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 173 transitions, 1871 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:08,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:08,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:08,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:09,044 INFO L124 PetriNetUnfolderBase]: 428/764 cut-off events. [2024-06-28 00:02:09,044 INFO L125 PetriNetUnfolderBase]: For 35950/35950 co-relation queries the response was YES. [2024-06-28 00:02:09,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 764 events. 428/764 cut-off events. For 35950/35950 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3445 event pairs, 58 based on Foata normal form. 4/766 useless extension candidates. Maximal degree in co-relation 5023. Up to 490 conditions per place. [2024-06-28 00:02:09,050 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 66 changer transitions 0/191 dead transitions. [2024-06-28 00:02:09,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 191 transitions, 2415 flow [2024-06-28 00:02:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:09,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 00:02:09,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 00:02:09,052 INFO L175 Difference]: Start difference. First operand has 180 places, 173 transitions, 1871 flow. Second operand 9 states and 107 transitions. [2024-06-28 00:02:09,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 191 transitions, 2415 flow [2024-06-28 00:02:09,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 191 transitions, 2322 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:09,121 INFO L231 Difference]: Finished difference. Result has 184 places, 178 transitions, 1966 flow [2024-06-28 00:02:09,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1966, PETRI_PLACES=184, PETRI_TRANSITIONS=178} [2024-06-28 00:02:09,122 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-28 00:02:09,122 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 178 transitions, 1966 flow [2024-06-28 00:02:09,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:09,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:09,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:09,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:02:09,122 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:09,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:09,122 INFO L85 PathProgramCache]: Analyzing trace with hash -191170934, now seen corresponding path program 9 times [2024-06-28 00:02:09,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:09,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919362542] [2024-06-28 00:02:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:09,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:10,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:10,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919362542] [2024-06-28 00:02:10,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919362542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:10,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:10,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:10,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17839534] [2024-06-28 00:02:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:10,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:10,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:10,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:10,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:10,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:10,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 178 transitions, 1966 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:10,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:10,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:10,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:11,269 INFO L124 PetriNetUnfolderBase]: 426/761 cut-off events. [2024-06-28 00:02:11,269 INFO L125 PetriNetUnfolderBase]: For 32973/32973 co-relation queries the response was YES. [2024-06-28 00:02:11,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5185 conditions, 761 events. 426/761 cut-off events. For 32973/32973 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3456 event pairs, 52 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 5097. Up to 604 conditions per place. [2024-06-28 00:02:11,277 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 54 changer transitions 0/190 dead transitions. [2024-06-28 00:02:11,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 190 transitions, 2374 flow [2024-06-28 00:02:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 00:02:11,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 00:02:11,278 INFO L175 Difference]: Start difference. First operand has 184 places, 178 transitions, 1966 flow. Second operand 9 states and 106 transitions. [2024-06-28 00:02:11,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 190 transitions, 2374 flow [2024-06-28 00:02:11,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 190 transitions, 2312 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:11,347 INFO L231 Difference]: Finished difference. Result has 188 places, 178 transitions, 2017 flow [2024-06-28 00:02:11,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2017, PETRI_PLACES=188, PETRI_TRANSITIONS=178} [2024-06-28 00:02:11,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-28 00:02:11,348 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 178 transitions, 2017 flow [2024-06-28 00:02:11,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:11,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:11,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:11,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:02:11,348 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:11,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:11,348 INFO L85 PathProgramCache]: Analyzing trace with hash -360047790, now seen corresponding path program 1 times [2024-06-28 00:02:11,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:11,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922798418] [2024-06-28 00:02:11,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:11,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:13,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:13,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922798418] [2024-06-28 00:02:13,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922798418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:13,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:13,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:13,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472962264] [2024-06-28 00:02:13,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:13,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:13,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:13,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:13,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 178 transitions, 2017 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:13,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:13,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:13,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:13,877 INFO L124 PetriNetUnfolderBase]: 423/756 cut-off events. [2024-06-28 00:02:13,877 INFO L125 PetriNetUnfolderBase]: For 32133/32133 co-relation queries the response was YES. [2024-06-28 00:02:13,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 756 events. 423/756 cut-off events. For 32133/32133 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3400 event pairs, 88 based on Foata normal form. 2/756 useless extension candidates. Maximal degree in co-relation 5029. Up to 724 conditions per place. [2024-06-28 00:02:13,885 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 169 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2024-06-28 00:02:13,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 187 transitions, 2407 flow [2024-06-28 00:02:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:13,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-28 00:02:13,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-28 00:02:13,886 INFO L175 Difference]: Start difference. First operand has 188 places, 178 transitions, 2017 flow. Second operand 10 states and 93 transitions. [2024-06-28 00:02:13,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 187 transitions, 2407 flow [2024-06-28 00:02:13,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 187 transitions, 2267 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:13,949 INFO L231 Difference]: Finished difference. Result has 191 places, 178 transitions, 1913 flow [2024-06-28 00:02:13,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1913, PETRI_PLACES=191, PETRI_TRANSITIONS=178} [2024-06-28 00:02:13,950 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-28 00:02:13,950 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 178 transitions, 1913 flow [2024-06-28 00:02:13,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:13,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:13,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:13,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:02:13,951 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:13,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:13,951 INFO L85 PathProgramCache]: Analyzing trace with hash -314629938, now seen corresponding path program 1 times [2024-06-28 00:02:13,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:13,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549810209] [2024-06-28 00:02:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:13,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549810209] [2024-06-28 00:02:15,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549810209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:15,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:15,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:15,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187480223] [2024-06-28 00:02:15,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:15,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:15,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:15,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:15,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:15,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:15,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 178 transitions, 1913 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:15,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:15,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:15,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:15,962 INFO L124 PetriNetUnfolderBase]: 434/777 cut-off events. [2024-06-28 00:02:15,962 INFO L125 PetriNetUnfolderBase]: For 35374/35374 co-relation queries the response was YES. [2024-06-28 00:02:15,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5223 conditions, 777 events. 434/777 cut-off events. For 35374/35374 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3547 event pairs, 89 based on Foata normal form. 2/777 useless extension candidates. Maximal degree in co-relation 5132. Up to 599 conditions per place. [2024-06-28 00:02:15,970 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 156 selfloop transitions, 37 changer transitions 0/195 dead transitions. [2024-06-28 00:02:15,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 195 transitions, 2453 flow [2024-06-28 00:02:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 00:02:15,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 00:02:15,971 INFO L175 Difference]: Start difference. First operand has 191 places, 178 transitions, 1913 flow. Second operand 9 states and 101 transitions. [2024-06-28 00:02:15,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 195 transitions, 2453 flow [2024-06-28 00:02:16,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 195 transitions, 2409 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:16,075 INFO L231 Difference]: Finished difference. Result has 191 places, 180 transitions, 1969 flow [2024-06-28 00:02:16,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1969, PETRI_PLACES=191, PETRI_TRANSITIONS=180} [2024-06-28 00:02:16,076 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-28 00:02:16,076 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 180 transitions, 1969 flow [2024-06-28 00:02:16,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:16,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:16,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:16,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:02:16,077 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:16,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:16,077 INFO L85 PathProgramCache]: Analyzing trace with hash -568335778, now seen corresponding path program 2 times [2024-06-28 00:02:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:16,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927491084] [2024-06-28 00:02:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:16,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:17,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:17,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927491084] [2024-06-28 00:02:17,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927491084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:17,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:17,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:17,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104320992] [2024-06-28 00:02:17,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:17,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:17,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:17,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:17,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:17,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:17,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 180 transitions, 1969 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:17,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:17,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:17,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:18,281 INFO L124 PetriNetUnfolderBase]: 445/798 cut-off events. [2024-06-28 00:02:18,281 INFO L125 PetriNetUnfolderBase]: For 39330/39330 co-relation queries the response was YES. [2024-06-28 00:02:18,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5491 conditions, 798 events. 445/798 cut-off events. For 39330/39330 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3684 event pairs, 94 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 5400. Up to 678 conditions per place. [2024-06-28 00:02:18,290 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 35 changer transitions 0/195 dead transitions. [2024-06-28 00:02:18,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 195 transitions, 2509 flow [2024-06-28 00:02:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 00:02:18,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 00:02:18,291 INFO L175 Difference]: Start difference. First operand has 191 places, 180 transitions, 1969 flow. Second operand 9 states and 100 transitions. [2024-06-28 00:02:18,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 195 transitions, 2509 flow [2024-06-28 00:02:18,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 195 transitions, 2445 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:18,378 INFO L231 Difference]: Finished difference. Result has 195 places, 182 transitions, 2005 flow [2024-06-28 00:02:18,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2005, PETRI_PLACES=195, PETRI_TRANSITIONS=182} [2024-06-28 00:02:18,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-28 00:02:18,379 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 182 transitions, 2005 flow [2024-06-28 00:02:18,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:18,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:18,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:18,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:02:18,380 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:18,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:18,380 INFO L85 PathProgramCache]: Analyzing trace with hash -397656463, now seen corresponding path program 1 times [2024-06-28 00:02:18,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:18,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089670647] [2024-06-28 00:02:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:18,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:19,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:19,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089670647] [2024-06-28 00:02:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089670647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:19,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:19,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296825963] [2024-06-28 00:02:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:19,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:19,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:19,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:19,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:19,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 182 transitions, 2005 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:19,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:19,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:19,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:20,313 INFO L124 PetriNetUnfolderBase]: 453/811 cut-off events. [2024-06-28 00:02:20,313 INFO L125 PetriNetUnfolderBase]: For 40885/40885 co-relation queries the response was YES. [2024-06-28 00:02:20,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5639 conditions, 811 events. 453/811 cut-off events. For 40885/40885 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3754 event pairs, 97 based on Foata normal form. 1/810 useless extension candidates. Maximal degree in co-relation 5546. Up to 649 conditions per place. [2024-06-28 00:02:20,322 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 45 changer transitions 0/197 dead transitions. [2024-06-28 00:02:20,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 197 transitions, 2547 flow [2024-06-28 00:02:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:20,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:20,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 00:02:20,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 00:02:20,324 INFO L175 Difference]: Start difference. First operand has 195 places, 182 transitions, 2005 flow. Second operand 9 states and 101 transitions. [2024-06-28 00:02:20,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 197 transitions, 2547 flow [2024-06-28 00:02:20,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 197 transitions, 2499 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:20,457 INFO L231 Difference]: Finished difference. Result has 199 places, 186 transitions, 2080 flow [2024-06-28 00:02:20,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2080, PETRI_PLACES=199, PETRI_TRANSITIONS=186} [2024-06-28 00:02:20,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-28 00:02:20,458 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 186 transitions, 2080 flow [2024-06-28 00:02:20,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:20,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:20,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:20,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:02:20,459 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:20,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:20,459 INFO L85 PathProgramCache]: Analyzing trace with hash -397656618, now seen corresponding path program 3 times [2024-06-28 00:02:20,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:20,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108307676] [2024-06-28 00:02:20,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:20,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:22,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:22,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108307676] [2024-06-28 00:02:22,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108307676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:22,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:22,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:22,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980179517] [2024-06-28 00:02:22,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:22,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:22,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:22,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:22,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:22,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 186 transitions, 2080 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:22,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:22,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:22,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:22,868 INFO L124 PetriNetUnfolderBase]: 450/806 cut-off events. [2024-06-28 00:02:22,869 INFO L125 PetriNetUnfolderBase]: For 41107/41107 co-relation queries the response was YES. [2024-06-28 00:02:22,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 806 events. 450/806 cut-off events. For 41107/41107 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3722 event pairs, 97 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 5551. Up to 703 conditions per place. [2024-06-28 00:02:22,875 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 161 selfloop transitions, 34 changer transitions 0/197 dead transitions. [2024-06-28 00:02:22,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 197 transitions, 2498 flow [2024-06-28 00:02:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 00:02:22,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 00:02:22,877 INFO L175 Difference]: Start difference. First operand has 199 places, 186 transitions, 2080 flow. Second operand 9 states and 97 transitions. [2024-06-28 00:02:22,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 197 transitions, 2498 flow [2024-06-28 00:02:22,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 197 transitions, 2442 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:22,967 INFO L231 Difference]: Finished difference. Result has 203 places, 186 transitions, 2096 flow [2024-06-28 00:02:22,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2096, PETRI_PLACES=203, PETRI_TRANSITIONS=186} [2024-06-28 00:02:22,968 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-28 00:02:22,968 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 186 transitions, 2096 flow [2024-06-28 00:02:22,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:22,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:22,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:22,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:02:22,969 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:22,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:22,969 INFO L85 PathProgramCache]: Analyzing trace with hash 556071609, now seen corresponding path program 2 times [2024-06-28 00:02:22,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:22,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067077695] [2024-06-28 00:02:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:22,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:24,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067077695] [2024-06-28 00:02:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067077695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:24,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:24,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:24,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392492259] [2024-06-28 00:02:24,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:24,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:24,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:24,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:24,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:24,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:24,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 186 transitions, 2096 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:24,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:24,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:24,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:25,094 INFO L124 PetriNetUnfolderBase]: 453/811 cut-off events. [2024-06-28 00:02:25,095 INFO L125 PetriNetUnfolderBase]: For 41320/41320 co-relation queries the response was YES. [2024-06-28 00:02:25,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5749 conditions, 811 events. 453/811 cut-off events. For 41320/41320 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3766 event pairs, 98 based on Foata normal form. 1/810 useless extension candidates. Maximal degree in co-relation 5652. Up to 706 conditions per place. [2024-06-28 00:02:25,104 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 41 changer transitions 0/197 dead transitions. [2024-06-28 00:02:25,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 197 transitions, 2522 flow [2024-06-28 00:02:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 00:02:25,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 00:02:25,105 INFO L175 Difference]: Start difference. First operand has 203 places, 186 transitions, 2096 flow. Second operand 10 states and 104 transitions. [2024-06-28 00:02:25,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 197 transitions, 2522 flow [2024-06-28 00:02:25,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 197 transitions, 2450 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:25,206 INFO L231 Difference]: Finished difference. Result has 205 places, 188 transitions, 2129 flow [2024-06-28 00:02:25,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2129, PETRI_PLACES=205, PETRI_TRANSITIONS=188} [2024-06-28 00:02:25,207 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-28 00:02:25,207 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 188 transitions, 2129 flow [2024-06-28 00:02:25,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:25,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:25,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:25,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:02:25,207 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:25,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:25,208 INFO L85 PathProgramCache]: Analyzing trace with hash 556066029, now seen corresponding path program 3 times [2024-06-28 00:02:25,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:25,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402500483] [2024-06-28 00:02:25,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:25,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:26,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:26,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402500483] [2024-06-28 00:02:26,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402500483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:26,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:26,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:26,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621406590] [2024-06-28 00:02:26,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:26,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:26,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:26,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:26,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:26,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:26,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 188 transitions, 2129 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:26,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:26,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:26,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:27,402 INFO L124 PetriNetUnfolderBase]: 456/816 cut-off events. [2024-06-28 00:02:27,403 INFO L125 PetriNetUnfolderBase]: For 42816/42816 co-relation queries the response was YES. [2024-06-28 00:02:27,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5815 conditions, 816 events. 456/816 cut-off events. For 42816/42816 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3792 event pairs, 98 based on Foata normal form. 1/815 useless extension candidates. Maximal degree in co-relation 5717. Up to 734 conditions per place. [2024-06-28 00:02:27,411 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 163 selfloop transitions, 33 changer transitions 0/198 dead transitions. [2024-06-28 00:02:27,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 198 transitions, 2559 flow [2024-06-28 00:02:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 00:02:27,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 00:02:27,413 INFO L175 Difference]: Start difference. First operand has 205 places, 188 transitions, 2129 flow. Second operand 9 states and 96 transitions. [2024-06-28 00:02:27,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 198 transitions, 2559 flow [2024-06-28 00:02:27,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 198 transitions, 2474 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:27,532 INFO L231 Difference]: Finished difference. Result has 206 places, 190 transitions, 2137 flow [2024-06-28 00:02:27,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2137, PETRI_PLACES=206, PETRI_TRANSITIONS=190} [2024-06-28 00:02:27,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-28 00:02:27,533 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 190 transitions, 2137 flow [2024-06-28 00:02:27,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:27,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:27,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:27,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:02:27,534 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:27,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash 555918004, now seen corresponding path program 4 times [2024-06-28 00:02:27,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:27,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556397879] [2024-06-28 00:02:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:27,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:29,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:29,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556397879] [2024-06-28 00:02:29,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556397879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:29,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:29,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:29,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564201404] [2024-06-28 00:02:29,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:29,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:29,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:29,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:29,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:29,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:29,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 190 transitions, 2137 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:29,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:29,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:29,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:29,549 INFO L124 PetriNetUnfolderBase]: 467/837 cut-off events. [2024-06-28 00:02:29,549 INFO L125 PetriNetUnfolderBase]: For 48780/48780 co-relation queries the response was YES. [2024-06-28 00:02:29,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6022 conditions, 837 events. 467/837 cut-off events. For 48780/48780 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3927 event pairs, 98 based on Foata normal form. 2/837 useless extension candidates. Maximal degree in co-relation 5923. Up to 735 conditions per place. [2024-06-28 00:02:29,555 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 32 changer transitions 0/204 dead transitions. [2024-06-28 00:02:29,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 204 transitions, 2697 flow [2024-06-28 00:02:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 00:02:29,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:02:29,557 INFO L175 Difference]: Start difference. First operand has 206 places, 190 transitions, 2137 flow. Second operand 9 states and 99 transitions. [2024-06-28 00:02:29,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 204 transitions, 2697 flow [2024-06-28 00:02:29,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 204 transitions, 2624 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:29,657 INFO L231 Difference]: Finished difference. Result has 208 places, 192 transitions, 2154 flow [2024-06-28 00:02:29,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2154, PETRI_PLACES=208, PETRI_TRANSITIONS=192} [2024-06-28 00:02:29,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 00:02:29,658 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 192 transitions, 2154 flow [2024-06-28 00:02:29,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:29,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:29,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:29,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:02:29,658 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:29,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash 555921724, now seen corresponding path program 5 times [2024-06-28 00:02:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:29,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880475645] [2024-06-28 00:02:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:29,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:31,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:31,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880475645] [2024-06-28 00:02:31,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880475645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:31,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:31,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:31,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916203890] [2024-06-28 00:02:31,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:31,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:31,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:31,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:31,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:31,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:31,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 192 transitions, 2154 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:31,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:31,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:31,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:31,552 INFO L124 PetriNetUnfolderBase]: 464/832 cut-off events. [2024-06-28 00:02:31,552 INFO L125 PetriNetUnfolderBase]: For 47573/47573 co-relation queries the response was YES. [2024-06-28 00:02:31,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5933 conditions, 832 events. 464/832 cut-off events. For 47573/47573 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3906 event pairs, 99 based on Foata normal form. 2/832 useless extension candidates. Maximal degree in co-relation 5833. Up to 753 conditions per place. [2024-06-28 00:02:31,563 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 30 changer transitions 0/202 dead transitions. [2024-06-28 00:02:31,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 202 transitions, 2578 flow [2024-06-28 00:02:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 00:02:31,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 00:02:31,565 INFO L175 Difference]: Start difference. First operand has 208 places, 192 transitions, 2154 flow. Second operand 9 states and 97 transitions. [2024-06-28 00:02:31,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 202 transitions, 2578 flow [2024-06-28 00:02:31,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 202 transitions, 2529 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:31,691 INFO L231 Difference]: Finished difference. Result has 212 places, 192 transitions, 2169 flow [2024-06-28 00:02:31,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2169, PETRI_PLACES=212, PETRI_TRANSITIONS=192} [2024-06-28 00:02:31,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 00:02:31,691 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 192 transitions, 2169 flow [2024-06-28 00:02:31,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:31,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:31,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:31,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:02:31,692 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:31,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:31,692 INFO L85 PathProgramCache]: Analyzing trace with hash 555921879, now seen corresponding path program 4 times [2024-06-28 00:02:31,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:31,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715454448] [2024-06-28 00:02:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:31,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:33,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:33,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715454448] [2024-06-28 00:02:33,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715454448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:33,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:33,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:33,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517555865] [2024-06-28 00:02:33,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:33,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:33,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:33,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:33,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:33,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:33,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 192 transitions, 2169 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:33,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:33,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:33,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:34,208 INFO L124 PetriNetUnfolderBase]: 467/837 cut-off events. [2024-06-28 00:02:34,208 INFO L125 PetriNetUnfolderBase]: For 47642/47642 co-relation queries the response was YES. [2024-06-28 00:02:34,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6020 conditions, 837 events. 467/837 cut-off events. For 47642/47642 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3932 event pairs, 100 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 5918. Up to 740 conditions per place. [2024-06-28 00:02:34,219 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 42 changer transitions 0/204 dead transitions. [2024-06-28 00:02:34,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 204 transitions, 2619 flow [2024-06-28 00:02:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:02:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:02:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 00:02:34,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 00:02:34,220 INFO L175 Difference]: Start difference. First operand has 212 places, 192 transitions, 2169 flow. Second operand 11 states and 115 transitions. [2024-06-28 00:02:34,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 204 transitions, 2619 flow [2024-06-28 00:02:34,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 204 transitions, 2554 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:34,353 INFO L231 Difference]: Finished difference. Result has 215 places, 194 transitions, 2223 flow [2024-06-28 00:02:34,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2223, PETRI_PLACES=215, PETRI_TRANSITIONS=194} [2024-06-28 00:02:34,353 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-28 00:02:34,353 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 194 transitions, 2223 flow [2024-06-28 00:02:34,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:34,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:34,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:34,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:02:34,354 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:34,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash -165023022, now seen corresponding path program 6 times [2024-06-28 00:02:34,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:34,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81852327] [2024-06-28 00:02:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:35,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:35,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81852327] [2024-06-28 00:02:35,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81852327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:35,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:35,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:35,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182497600] [2024-06-28 00:02:35,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:35,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:35,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:35,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:35,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:36,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:36,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 194 transitions, 2223 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:36,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:36,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:36,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:36,505 INFO L124 PetriNetUnfolderBase]: 471/845 cut-off events. [2024-06-28 00:02:36,505 INFO L125 PetriNetUnfolderBase]: For 50971/50971 co-relation queries the response was YES. [2024-06-28 00:02:36,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6121 conditions, 845 events. 471/845 cut-off events. For 50971/50971 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3999 event pairs, 95 based on Foata normal form. 2/845 useless extension candidates. Maximal degree in co-relation 6018. Up to 724 conditions per place. [2024-06-28 00:02:36,511 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 37 changer transitions 0/210 dead transitions. [2024-06-28 00:02:36,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 210 transitions, 2805 flow [2024-06-28 00:02:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:36,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 00:02:36,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 00:02:36,513 INFO L175 Difference]: Start difference. First operand has 215 places, 194 transitions, 2223 flow. Second operand 9 states and 104 transitions. [2024-06-28 00:02:36,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 210 transitions, 2805 flow [2024-06-28 00:02:36,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 210 transitions, 2714 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:36,612 INFO L231 Difference]: Finished difference. Result has 215 places, 195 transitions, 2222 flow [2024-06-28 00:02:36,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2222, PETRI_PLACES=215, PETRI_TRANSITIONS=195} [2024-06-28 00:02:36,612 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-28 00:02:36,612 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 195 transitions, 2222 flow [2024-06-28 00:02:36,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:36,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:36,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:36,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:02:36,613 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:36,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1031905834, now seen corresponding path program 7 times [2024-06-28 00:02:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:36,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222067867] [2024-06-28 00:02:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:36,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:38,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222067867] [2024-06-28 00:02:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222067867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:38,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:38,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455096794] [2024-06-28 00:02:38,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:38,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:38,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:38,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:38,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:38,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:38,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 195 transitions, 2222 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:38,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:38,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:38,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:38,569 INFO L124 PetriNetUnfolderBase]: 468/840 cut-off events. [2024-06-28 00:02:38,569 INFO L125 PetriNetUnfolderBase]: For 49360/49360 co-relation queries the response was YES. [2024-06-28 00:02:38,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6010 conditions, 840 events. 468/840 cut-off events. For 49360/49360 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3955 event pairs, 98 based on Foata normal form. 2/840 useless extension candidates. Maximal degree in co-relation 5906. Up to 752 conditions per place. [2024-06-28 00:02:38,578 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 34 changer transitions 0/207 dead transitions. [2024-06-28 00:02:38,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 207 transitions, 2664 flow [2024-06-28 00:02:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 00:02:38,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 00:02:38,580 INFO L175 Difference]: Start difference. First operand has 215 places, 195 transitions, 2222 flow. Second operand 9 states and 100 transitions. [2024-06-28 00:02:38,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 207 transitions, 2664 flow [2024-06-28 00:02:38,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 207 transitions, 2533 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:38,724 INFO L231 Difference]: Finished difference. Result has 215 places, 195 transitions, 2163 flow [2024-06-28 00:02:38,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2163, PETRI_PLACES=215, PETRI_TRANSITIONS=195} [2024-06-28 00:02:38,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-28 00:02:38,725 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 195 transitions, 2163 flow [2024-06-28 00:02:38,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:38,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:38,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:38,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:02:38,726 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:38,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:38,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1031905679, now seen corresponding path program 5 times [2024-06-28 00:02:38,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:38,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352927922] [2024-06-28 00:02:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:38,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:40,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:40,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352927922] [2024-06-28 00:02:40,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352927922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:40,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:40,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:40,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301152648] [2024-06-28 00:02:40,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:40,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:40,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:40,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:40,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 195 transitions, 2163 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:40,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:40,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:40,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:41,000 INFO L124 PetriNetUnfolderBase]: 476/853 cut-off events. [2024-06-28 00:02:41,000 INFO L125 PetriNetUnfolderBase]: For 50944/50944 co-relation queries the response was YES. [2024-06-28 00:02:41,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6039 conditions, 853 events. 476/853 cut-off events. For 50944/50944 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4036 event pairs, 99 based on Foata normal form. 1/852 useless extension candidates. Maximal degree in co-relation 5936. Up to 753 conditions per place. [2024-06-28 00:02:41,010 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 168 selfloop transitions, 41 changer transitions 0/211 dead transitions. [2024-06-28 00:02:41,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 211 transitions, 2783 flow [2024-06-28 00:02:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:02:41,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:02:41,011 INFO L175 Difference]: Start difference. First operand has 215 places, 195 transitions, 2163 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:02:41,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 211 transitions, 2783 flow [2024-06-28 00:02:41,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 211 transitions, 2713 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:41,155 INFO L231 Difference]: Finished difference. Result has 218 places, 199 transitions, 2236 flow [2024-06-28 00:02:41,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2236, PETRI_PLACES=218, PETRI_TRANSITIONS=199} [2024-06-28 00:02:41,155 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-28 00:02:41,156 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 199 transitions, 2236 flow [2024-06-28 00:02:41,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:41,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:41,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:41,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:02:41,156 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:41,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:41,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1031761529, now seen corresponding path program 6 times [2024-06-28 00:02:41,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:41,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021473496] [2024-06-28 00:02:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:41,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:42,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:42,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021473496] [2024-06-28 00:02:42,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021473496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:42,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:42,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:42,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597503959] [2024-06-28 00:02:42,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:42,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:42,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:42,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:42,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 199 transitions, 2236 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:42,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:42,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:42,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:43,372 INFO L124 PetriNetUnfolderBase]: 479/858 cut-off events. [2024-06-28 00:02:43,372 INFO L125 PetriNetUnfolderBase]: For 52684/52684 co-relation queries the response was YES. [2024-06-28 00:02:43,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6121 conditions, 858 events. 479/858 cut-off events. For 52684/52684 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4067 event pairs, 99 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 6017. Up to 722 conditions per place. [2024-06-28 00:02:43,384 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 54 changer transitions 0/213 dead transitions. [2024-06-28 00:02:43,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 213 transitions, 2840 flow [2024-06-28 00:02:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:02:43,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 00:02:43,385 INFO L175 Difference]: Start difference. First operand has 218 places, 199 transitions, 2236 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:02:43,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 213 transitions, 2840 flow [2024-06-28 00:02:43,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 213 transitions, 2773 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:43,502 INFO L231 Difference]: Finished difference. Result has 222 places, 201 transitions, 2312 flow [2024-06-28 00:02:43,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2312, PETRI_PLACES=222, PETRI_TRANSITIONS=201} [2024-06-28 00:02:43,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 00:02:43,503 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 201 transitions, 2312 flow [2024-06-28 00:02:43,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:43,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:43,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:43,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:02:43,503 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:43,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash -164869200, now seen corresponding path program 1 times [2024-06-28 00:02:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374508255] [2024-06-28 00:02:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:43,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:45,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:45,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374508255] [2024-06-28 00:02:45,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374508255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:45,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:45,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:45,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533706276] [2024-06-28 00:02:45,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:45,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:45,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:45,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:45,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:45,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 201 transitions, 2312 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:45,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:45,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:45,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:46,063 INFO L124 PetriNetUnfolderBase]: 485/868 cut-off events. [2024-06-28 00:02:46,063 INFO L125 PetriNetUnfolderBase]: For 56289/56289 co-relation queries the response was YES. [2024-06-28 00:02:46,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6272 conditions, 868 events. 485/868 cut-off events. For 56289/56289 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4136 event pairs, 101 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 6166. Up to 676 conditions per place. [2024-06-28 00:02:46,071 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 55 changer transitions 0/217 dead transitions. [2024-06-28 00:02:46,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 217 transitions, 2924 flow [2024-06-28 00:02:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:02:46,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 00:02:46,072 INFO L175 Difference]: Start difference. First operand has 222 places, 201 transitions, 2312 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:02:46,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 217 transitions, 2924 flow [2024-06-28 00:02:46,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 217 transitions, 2819 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:46,191 INFO L231 Difference]: Finished difference. Result has 225 places, 203 transitions, 2342 flow [2024-06-28 00:02:46,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2342, PETRI_PLACES=225, PETRI_TRANSITIONS=203} [2024-06-28 00:02:46,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-28 00:02:46,191 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 203 transitions, 2342 flow [2024-06-28 00:02:46,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:46,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:46,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:46,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:02:46,192 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:46,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1031755949, now seen corresponding path program 7 times [2024-06-28 00:02:46,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:46,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533655616] [2024-06-28 00:02:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:47,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:47,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533655616] [2024-06-28 00:02:47,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533655616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:47,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:47,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:47,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164037627] [2024-06-28 00:02:47,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:47,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:47,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:47,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:47,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:47,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:47,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 203 transitions, 2342 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:47,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:47,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:47,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:48,343 INFO L124 PetriNetUnfolderBase]: 488/873 cut-off events. [2024-06-28 00:02:48,344 INFO L125 PetriNetUnfolderBase]: For 56258/56258 co-relation queries the response was YES. [2024-06-28 00:02:48,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6361 conditions, 873 events. 488/873 cut-off events. For 56258/56258 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4168 event pairs, 99 based on Foata normal form. 1/872 useless extension candidates. Maximal degree in co-relation 6254. Up to 768 conditions per place. [2024-06-28 00:02:48,354 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 166 selfloop transitions, 47 changer transitions 0/215 dead transitions. [2024-06-28 00:02:48,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 215 transitions, 2826 flow [2024-06-28 00:02:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:48,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 00:02:48,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 00:02:48,356 INFO L175 Difference]: Start difference. First operand has 225 places, 203 transitions, 2342 flow. Second operand 9 states and 100 transitions. [2024-06-28 00:02:48,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 215 transitions, 2826 flow [2024-06-28 00:02:48,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 215 transitions, 2706 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:48,481 INFO L231 Difference]: Finished difference. Result has 226 places, 205 transitions, 2357 flow [2024-06-28 00:02:48,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2357, PETRI_PLACES=226, PETRI_TRANSITIONS=205} [2024-06-28 00:02:48,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-28 00:02:48,481 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 205 transitions, 2357 flow [2024-06-28 00:02:48,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:48,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:48,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:48,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:02:48,482 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:48,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1026393569, now seen corresponding path program 8 times [2024-06-28 00:02:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757177991] [2024-06-28 00:02:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:48,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:50,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757177991] [2024-06-28 00:02:50,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757177991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:50,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:50,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:50,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562096799] [2024-06-28 00:02:50,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:50,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:50,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:50,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:50,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 205 transitions, 2357 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:50,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:50,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:50,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:50,648 INFO L124 PetriNetUnfolderBase]: 491/878 cut-off events. [2024-06-28 00:02:50,648 INFO L125 PetriNetUnfolderBase]: For 57868/57868 co-relation queries the response was YES. [2024-06-28 00:02:50,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6411 conditions, 878 events. 491/878 cut-off events. For 57868/57868 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4193 event pairs, 99 based on Foata normal form. 1/877 useless extension candidates. Maximal degree in co-relation 6303. Up to 773 conditions per place. [2024-06-28 00:02:50,661 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 42 changer transitions 0/216 dead transitions. [2024-06-28 00:02:50,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 216 transitions, 2843 flow [2024-06-28 00:02:50,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:50,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 00:02:50,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:02:50,663 INFO L175 Difference]: Start difference. First operand has 226 places, 205 transitions, 2357 flow. Second operand 9 states and 99 transitions. [2024-06-28 00:02:50,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 216 transitions, 2843 flow [2024-06-28 00:02:50,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 216 transitions, 2730 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:50,801 INFO L231 Difference]: Finished difference. Result has 228 places, 207 transitions, 2373 flow [2024-06-28 00:02:50,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2373, PETRI_PLACES=228, PETRI_TRANSITIONS=207} [2024-06-28 00:02:50,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-28 00:02:50,801 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 207 transitions, 2373 flow [2024-06-28 00:02:50,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:50,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:50,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:50,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:02:50,802 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:50,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:50,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1026393352, now seen corresponding path program 2 times [2024-06-28 00:02:50,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:50,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673108529] [2024-06-28 00:02:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:50,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:52,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:52,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673108529] [2024-06-28 00:02:52,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673108529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:52,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:52,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509065436] [2024-06-28 00:02:52,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:52,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:52,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:52,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:52,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:52,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 207 transitions, 2373 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:52,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:52,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:52,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:53,597 INFO L124 PetriNetUnfolderBase]: 507/904 cut-off events. [2024-06-28 00:02:53,597 INFO L125 PetriNetUnfolderBase]: For 65745/65745 co-relation queries the response was YES. [2024-06-28 00:02:53,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6660 conditions, 904 events. 507/904 cut-off events. For 65745/65745 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4343 event pairs, 103 based on Foata normal form. 2/904 useless extension candidates. Maximal degree in co-relation 6551. Up to 701 conditions per place. [2024-06-28 00:02:53,610 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 50 changer transitions 0/226 dead transitions. [2024-06-28 00:02:53,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 226 transitions, 3155 flow [2024-06-28 00:02:53,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 00:02:53,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:02:53,612 INFO L175 Difference]: Start difference. First operand has 228 places, 207 transitions, 2373 flow. Second operand 10 states and 115 transitions. [2024-06-28 00:02:53,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 226 transitions, 3155 flow [2024-06-28 00:02:53,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 226 transitions, 3048 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:53,780 INFO L231 Difference]: Finished difference. Result has 231 places, 211 transitions, 2407 flow [2024-06-28 00:02:53,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2407, PETRI_PLACES=231, PETRI_TRANSITIONS=211} [2024-06-28 00:02:53,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 00:02:53,781 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 211 transitions, 2407 flow [2024-06-28 00:02:53,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:53,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:53,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:53,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:02:53,781 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:53,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1026184102, now seen corresponding path program 3 times [2024-06-28 00:02:53,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:53,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647124596] [2024-06-28 00:02:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:53,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:55,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:55,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647124596] [2024-06-28 00:02:55,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647124596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:55,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:55,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:55,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588065308] [2024-06-28 00:02:55,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:55,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:55,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:55,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:55,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:55,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 211 transitions, 2407 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:55,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:55,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:55,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:56,474 INFO L124 PetriNetUnfolderBase]: 513/914 cut-off events. [2024-06-28 00:02:56,474 INFO L125 PetriNetUnfolderBase]: For 67926/67926 co-relation queries the response was YES. [2024-06-28 00:02:56,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6758 conditions, 914 events. 513/914 cut-off events. For 67926/67926 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4382 event pairs, 102 based on Foata normal form. 2/914 useless extension candidates. Maximal degree in co-relation 6648. Up to 707 conditions per place. [2024-06-28 00:02:56,484 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 55 changer transitions 0/227 dead transitions. [2024-06-28 00:02:56,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 227 transitions, 3177 flow [2024-06-28 00:02:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:56,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:02:56,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:02:56,485 INFO L175 Difference]: Start difference. First operand has 231 places, 211 transitions, 2407 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:02:56,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 227 transitions, 3177 flow [2024-06-28 00:02:56,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 227 transitions, 3104 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:56,689 INFO L231 Difference]: Finished difference. Result has 235 places, 213 transitions, 2472 flow [2024-06-28 00:02:56,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2336, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2472, PETRI_PLACES=235, PETRI_TRANSITIONS=213} [2024-06-28 00:02:56,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 00:02:56,690 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 213 transitions, 2472 flow [2024-06-28 00:02:56,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:56,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:56,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:56,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:02:56,691 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:56,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:56,692 INFO L85 PathProgramCache]: Analyzing trace with hash -159305010, now seen corresponding path program 4 times [2024-06-28 00:02:56,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:56,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906512208] [2024-06-28 00:02:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:58,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:58,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906512208] [2024-06-28 00:02:58,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906512208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:58,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:58,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:58,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131377240] [2024-06-28 00:02:58,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:58,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:58,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:58,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:58,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 213 transitions, 2472 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:58,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:58,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:58,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:59,278 INFO L124 PetriNetUnfolderBase]: 509/908 cut-off events. [2024-06-28 00:02:59,278 INFO L125 PetriNetUnfolderBase]: For 65683/65683 co-relation queries the response was YES. [2024-06-28 00:02:59,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6666 conditions, 908 events. 509/908 cut-off events. For 65683/65683 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4373 event pairs, 103 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 6555. Up to 704 conditions per place. [2024-06-28 00:02:59,289 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 53 changer transitions 0/227 dead transitions. [2024-06-28 00:02:59,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 227 transitions, 3094 flow [2024-06-28 00:02:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:59,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:02:59,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 00:02:59,290 INFO L175 Difference]: Start difference. First operand has 235 places, 213 transitions, 2472 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:02:59,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 227 transitions, 3094 flow [2024-06-28 00:02:59,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 227 transitions, 2992 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:59,513 INFO L231 Difference]: Finished difference. Result has 238 places, 213 transitions, 2481 flow [2024-06-28 00:02:59,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2481, PETRI_PLACES=238, PETRI_TRANSITIONS=213} [2024-06-28 00:02:59,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 00:02:59,513 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 213 transitions, 2481 flow [2024-06-28 00:02:59,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:59,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:59,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:59,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:02:59,514 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:59,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:59,514 INFO L85 PathProgramCache]: Analyzing trace with hash -159305227, now seen corresponding path program 9 times [2024-06-28 00:02:59,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:59,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190232631] [2024-06-28 00:02:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:59,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:01,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190232631] [2024-06-28 00:03:01,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190232631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:01,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:01,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:01,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084707495] [2024-06-28 00:03:01,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:01,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:01,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:01,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:01,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 213 transitions, 2481 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:01,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:01,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:01,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:02,030 INFO L124 PetriNetUnfolderBase]: 512/913 cut-off events. [2024-06-28 00:03:02,030 INFO L125 PetriNetUnfolderBase]: For 65511/65511 co-relation queries the response was YES. [2024-06-28 00:03:02,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6738 conditions, 913 events. 512/913 cut-off events. For 65511/65511 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4405 event pairs, 103 based on Foata normal form. 1/912 useless extension candidates. Maximal degree in co-relation 6626. Up to 808 conditions per place. [2024-06-28 00:03:02,040 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 43 changer transitions 0/224 dead transitions. [2024-06-28 00:03:02,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 224 transitions, 2987 flow [2024-06-28 00:03:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 00:03:02,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 00:03:02,049 INFO L175 Difference]: Start difference. First operand has 238 places, 213 transitions, 2481 flow. Second operand 10 states and 103 transitions. [2024-06-28 00:03:02,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 224 transitions, 2987 flow [2024-06-28 00:03:02,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 224 transitions, 2855 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 00:03:02,244 INFO L231 Difference]: Finished difference. Result has 238 places, 215 transitions, 2484 flow [2024-06-28 00:03:02,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2484, PETRI_PLACES=238, PETRI_TRANSITIONS=215} [2024-06-28 00:03:02,248 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 00:03:02,248 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 215 transitions, 2484 flow [2024-06-28 00:03:02,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:02,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:02,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:02,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:03:02,248 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:02,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:02,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1062486158, now seen corresponding path program 5 times [2024-06-28 00:03:02,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:02,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371111935] [2024-06-28 00:03:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:02,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:03,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:03,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371111935] [2024-06-28 00:03:03,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371111935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:03,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:03,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:03,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677867832] [2024-06-28 00:03:03,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:03,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:03,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:03,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:03,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:03,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:03,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 215 transitions, 2484 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:03,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:03,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:03,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:04,167 INFO L124 PetriNetUnfolderBase]: 518/923 cut-off events. [2024-06-28 00:03:04,168 INFO L125 PetriNetUnfolderBase]: For 69462/69462 co-relation queries the response was YES. [2024-06-28 00:03:04,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6755 conditions, 923 events. 518/923 cut-off events. For 69462/69462 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4471 event pairs, 101 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 6642. Up to 878 conditions per place. [2024-06-28 00:03:04,176 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 205 selfloop transitions, 20 changer transitions 0/227 dead transitions. [2024-06-28 00:03:04,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 227 transitions, 2980 flow [2024-06-28 00:03:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 00:03:04,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-28 00:03:04,177 INFO L175 Difference]: Start difference. First operand has 238 places, 215 transitions, 2484 flow. Second operand 9 states and 92 transitions. [2024-06-28 00:03:04,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 227 transitions, 2980 flow [2024-06-28 00:03:04,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 227 transitions, 2867 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:04,336 INFO L231 Difference]: Finished difference. Result has 239 places, 217 transitions, 2441 flow [2024-06-28 00:03:04,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2441, PETRI_PLACES=239, PETRI_TRANSITIONS=217} [2024-06-28 00:03:04,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 00:03:04,337 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 217 transitions, 2441 flow [2024-06-28 00:03:04,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:04,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:04,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:04,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:03:04,337 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:04,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:04,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1713886652, now seen corresponding path program 6 times [2024-06-28 00:03:04,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:04,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134046979] [2024-06-28 00:03:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:04,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:05,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:05,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134046979] [2024-06-28 00:03:05,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134046979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:05,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:05,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:05,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355902064] [2024-06-28 00:03:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:05,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:05,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:05,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:05,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:05,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:05,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 217 transitions, 2441 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:05,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:05,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:05,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:06,571 INFO L124 PetriNetUnfolderBase]: 534/949 cut-off events. [2024-06-28 00:03:06,571 INFO L125 PetriNetUnfolderBase]: For 76331/76331 co-relation queries the response was YES. [2024-06-28 00:03:06,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6984 conditions, 949 events. 534/949 cut-off events. For 76331/76331 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4605 event pairs, 102 based on Foata normal form. 2/949 useless extension candidates. Maximal degree in co-relation 6870. Up to 875 conditions per place. [2024-06-28 00:03:06,580 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 205 selfloop transitions, 26 changer transitions 0/233 dead transitions. [2024-06-28 00:03:06,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 233 transitions, 3121 flow [2024-06-28 00:03:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 00:03:06,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 00:03:06,581 INFO L175 Difference]: Start difference. First operand has 239 places, 217 transitions, 2441 flow. Second operand 10 states and 103 transitions. [2024-06-28 00:03:06,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 233 transitions, 3121 flow [2024-06-28 00:03:06,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 233 transitions, 3079 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:06,760 INFO L231 Difference]: Finished difference. Result has 242 places, 221 transitions, 2508 flow [2024-06-28 00:03:06,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2508, PETRI_PLACES=242, PETRI_TRANSITIONS=221} [2024-06-28 00:03:06,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-28 00:03:06,761 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 221 transitions, 2508 flow [2024-06-28 00:03:06,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:06,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:06,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:06,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:03:06,761 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:06,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1713878995, now seen corresponding path program 10 times [2024-06-28 00:03:06,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:06,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118344590] [2024-06-28 00:03:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:06,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:08,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:08,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118344590] [2024-06-28 00:03:08,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118344590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:08,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:08,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:08,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657877751] [2024-06-28 00:03:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:08,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:08,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:08,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:08,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:08,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:08,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 221 transitions, 2508 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:08,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:08,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:08,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:08,787 INFO L124 PetriNetUnfolderBase]: 532/946 cut-off events. [2024-06-28 00:03:08,788 INFO L125 PetriNetUnfolderBase]: For 73745/73745 co-relation queries the response was YES. [2024-06-28 00:03:08,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6955 conditions, 946 events. 532/946 cut-off events. For 73745/73745 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4590 event pairs, 104 based on Foata normal form. 1/945 useless extension candidates. Maximal degree in co-relation 6840. Up to 917 conditions per place. [2024-06-28 00:03:08,800 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 17 changer transitions 0/229 dead transitions. [2024-06-28 00:03:08,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 229 transitions, 2980 flow [2024-06-28 00:03:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-28 00:03:08,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3032258064516129 [2024-06-28 00:03:08,801 INFO L175 Difference]: Start difference. First operand has 242 places, 221 transitions, 2508 flow. Second operand 10 states and 94 transitions. [2024-06-28 00:03:08,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 229 transitions, 2980 flow [2024-06-28 00:03:08,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 229 transitions, 2925 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:08,984 INFO L231 Difference]: Finished difference. Result has 246 places, 221 transitions, 2492 flow [2024-06-28 00:03:08,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2492, PETRI_PLACES=246, PETRI_TRANSITIONS=221} [2024-06-28 00:03:08,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-28 00:03:08,985 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 221 transitions, 2492 flow [2024-06-28 00:03:08,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:08,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:08,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:08,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:03:08,985 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:08,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:08,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1713879212, now seen corresponding path program 7 times [2024-06-28 00:03:08,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:08,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635310827] [2024-06-28 00:03:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:08,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:10,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:10,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635310827] [2024-06-28 00:03:10,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635310827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:10,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:10,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:10,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713620571] [2024-06-28 00:03:10,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:10,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:10,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:10,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:10,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:10,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 221 transitions, 2492 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:10,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:10,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:10,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:10,968 INFO L124 PetriNetUnfolderBase]: 531/945 cut-off events. [2024-06-28 00:03:10,969 INFO L125 PetriNetUnfolderBase]: For 73092/73092 co-relation queries the response was YES. [2024-06-28 00:03:10,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6824 conditions, 945 events. 531/945 cut-off events. For 73092/73092 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4593 event pairs, 101 based on Foata normal form. 2/945 useless extension candidates. Maximal degree in co-relation 6707. Up to 895 conditions per place. [2024-06-28 00:03:10,978 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 207 selfloop transitions, 26 changer transitions 0/235 dead transitions. [2024-06-28 00:03:10,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 235 transitions, 3018 flow [2024-06-28 00:03:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 00:03:10,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-28 00:03:10,979 INFO L175 Difference]: Start difference. First operand has 246 places, 221 transitions, 2492 flow. Second operand 10 states and 101 transitions. [2024-06-28 00:03:10,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 235 transitions, 3018 flow [2024-06-28 00:03:11,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 235 transitions, 2965 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:11,223 INFO L231 Difference]: Finished difference. Result has 249 places, 226 transitions, 2561 flow [2024-06-28 00:03:11,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2561, PETRI_PLACES=249, PETRI_TRANSITIONS=226} [2024-06-28 00:03:11,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-28 00:03:11,223 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 226 transitions, 2561 flow [2024-06-28 00:03:11,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:11,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:11,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:11,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:03:11,224 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:11,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:11,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1457176892, now seen corresponding path program 8 times [2024-06-28 00:03:11,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:11,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011108990] [2024-06-28 00:03:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:11,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:13,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:13,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011108990] [2024-06-28 00:03:13,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011108990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:13,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:13,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:13,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190503631] [2024-06-28 00:03:13,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:13,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:13,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:13,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:13,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:13,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:13,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 226 transitions, 2561 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:13,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:13,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:13,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:13,640 INFO L124 PetriNetUnfolderBase]: 537/955 cut-off events. [2024-06-28 00:03:13,640 INFO L125 PetriNetUnfolderBase]: For 75388/75388 co-relation queries the response was YES. [2024-06-28 00:03:13,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7030 conditions, 955 events. 537/955 cut-off events. For 75388/75388 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4654 event pairs, 100 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 6910. Up to 849 conditions per place. [2024-06-28 00:03:13,649 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 40 changer transitions 0/241 dead transitions. [2024-06-28 00:03:13,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 241 transitions, 3268 flow [2024-06-28 00:03:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 00:03:13,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 00:03:13,650 INFO L175 Difference]: Start difference. First operand has 249 places, 226 transitions, 2561 flow. Second operand 10 states and 105 transitions. [2024-06-28 00:03:13,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 241 transitions, 3268 flow [2024-06-28 00:03:13,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 241 transitions, 3225 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:13,862 INFO L231 Difference]: Finished difference. Result has 253 places, 229 transitions, 2666 flow [2024-06-28 00:03:13,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2666, PETRI_PLACES=253, PETRI_TRANSITIONS=229} [2024-06-28 00:03:13,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-28 00:03:13,863 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 229 transitions, 2666 flow [2024-06-28 00:03:13,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:13,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:13,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:13,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:03:13,863 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:13,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1457176675, now seen corresponding path program 11 times [2024-06-28 00:03:13,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:13,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817166791] [2024-06-28 00:03:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:13,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:15,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:15,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817166791] [2024-06-28 00:03:15,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817166791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:15,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:15,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:15,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29093774] [2024-06-28 00:03:15,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:15,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:15,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:15,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:15,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:15,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:15,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 229 transitions, 2666 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:15,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:15,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:15,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:15,946 INFO L124 PetriNetUnfolderBase]: 540/960 cut-off events. [2024-06-28 00:03:15,946 INFO L125 PetriNetUnfolderBase]: For 75079/75079 co-relation queries the response was YES. [2024-06-28 00:03:15,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7194 conditions, 960 events. 540/960 cut-off events. For 75079/75079 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4682 event pairs, 101 based on Foata normal form. 1/959 useless extension candidates. Maximal degree in co-relation 7072. Up to 916 conditions per place. [2024-06-28 00:03:15,954 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 212 selfloop transitions, 25 changer transitions 0/239 dead transitions. [2024-06-28 00:03:15,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 239 transitions, 3202 flow [2024-06-28 00:03:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:15,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 00:03:15,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-28 00:03:15,956 INFO L175 Difference]: Start difference. First operand has 253 places, 229 transitions, 2666 flow. Second operand 10 states and 97 transitions. [2024-06-28 00:03:15,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 239 transitions, 3202 flow [2024-06-28 00:03:16,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 239 transitions, 3053 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:16,146 INFO L231 Difference]: Finished difference. Result has 254 places, 231 transitions, 2620 flow [2024-06-28 00:03:16,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2620, PETRI_PLACES=254, PETRI_TRANSITIONS=231} [2024-06-28 00:03:16,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-28 00:03:16,148 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 231 transitions, 2620 flow [2024-06-28 00:03:16,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:16,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:16,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:16,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:03:16,148 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:16,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1457378485, now seen corresponding path program 12 times [2024-06-28 00:03:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:16,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289028374] [2024-06-28 00:03:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:16,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:17,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:17,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289028374] [2024-06-28 00:03:17,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289028374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:17,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:17,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:17,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845026121] [2024-06-28 00:03:17,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:17,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:17,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:17,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:17,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:17,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:17,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 231 transitions, 2620 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:17,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:17,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:17,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:18,460 INFO L124 PetriNetUnfolderBase]: 538/957 cut-off events. [2024-06-28 00:03:18,460 INFO L125 PetriNetUnfolderBase]: For 73747/73747 co-relation queries the response was YES. [2024-06-28 00:03:18,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7027 conditions, 957 events. 538/957 cut-off events. For 73747/73747 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4675 event pairs, 103 based on Foata normal form. 1/956 useless extension candidates. Maximal degree in co-relation 6904. Up to 913 conditions per place. [2024-06-28 00:03:18,468 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 24 changer transitions 0/239 dead transitions. [2024-06-28 00:03:18,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 239 transitions, 3112 flow [2024-06-28 00:03:18,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 00:03:18,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:03:18,469 INFO L175 Difference]: Start difference. First operand has 254 places, 231 transitions, 2620 flow. Second operand 9 states and 93 transitions. [2024-06-28 00:03:18,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 239 transitions, 3112 flow [2024-06-28 00:03:18,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 239 transitions, 3017 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:18,664 INFO L231 Difference]: Finished difference. Result has 255 places, 231 transitions, 2578 flow [2024-06-28 00:03:18,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2578, PETRI_PLACES=255, PETRI_TRANSITIONS=231} [2024-06-28 00:03:18,665 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-28 00:03:18,665 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 231 transitions, 2578 flow [2024-06-28 00:03:18,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:18,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:18,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:18,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:03:18,665 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:18,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:18,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1457386142, now seen corresponding path program 9 times [2024-06-28 00:03:18,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:18,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536412383] [2024-06-28 00:03:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:18,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:20,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:20,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536412383] [2024-06-28 00:03:20,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536412383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:20,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:20,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:20,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656507450] [2024-06-28 00:03:20,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:20,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:20,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:20,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:20,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:20,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:20,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 231 transitions, 2578 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:20,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:20,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:20,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:21,359 INFO L124 PetriNetUnfolderBase]: 544/967 cut-off events. [2024-06-28 00:03:21,359 INFO L125 PetriNetUnfolderBase]: For 78390/78390 co-relation queries the response was YES. [2024-06-28 00:03:21,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7075 conditions, 967 events. 544/967 cut-off events. For 78390/78390 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4741 event pairs, 102 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 6951. Up to 857 conditions per place. [2024-06-28 00:03:21,371 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 204 selfloop transitions, 39 changer transitions 0/245 dead transitions. [2024-06-28 00:03:21,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 245 transitions, 3286 flow [2024-06-28 00:03:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 00:03:21,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 00:03:21,373 INFO L175 Difference]: Start difference. First operand has 255 places, 231 transitions, 2578 flow. Second operand 9 states and 101 transitions. [2024-06-28 00:03:21,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 245 transitions, 3286 flow [2024-06-28 00:03:21,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 245 transitions, 3169 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:21,656 INFO L231 Difference]: Finished difference. Result has 255 places, 233 transitions, 2572 flow [2024-06-28 00:03:21,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2572, PETRI_PLACES=255, PETRI_TRANSITIONS=233} [2024-06-28 00:03:21,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-28 00:03:21,656 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 233 transitions, 2572 flow [2024-06-28 00:03:21,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:21,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:21,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:21,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:03:21,657 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:21,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:21,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1457378702, now seen corresponding path program 10 times [2024-06-28 00:03:21,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:21,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416404691] [2024-06-28 00:03:21,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:21,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:23,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416404691] [2024-06-28 00:03:23,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416404691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:23,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:23,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:23,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758159299] [2024-06-28 00:03:23,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:23,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:23,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:23,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:23,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:23,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 233 transitions, 2572 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:23,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:23,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:23,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:24,336 INFO L124 PetriNetUnfolderBase]: 540/961 cut-off events. [2024-06-28 00:03:24,337 INFO L125 PetriNetUnfolderBase]: For 74733/74733 co-relation queries the response was YES. [2024-06-28 00:03:24,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6867 conditions, 961 events. 540/961 cut-off events. For 74733/74733 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4714 event pairs, 101 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 6743. Up to 854 conditions per place. [2024-06-28 00:03:24,347 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 205 selfloop transitions, 38 changer transitions 0/245 dead transitions. [2024-06-28 00:03:24,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 245 transitions, 3108 flow [2024-06-28 00:03:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 00:03:24,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 00:03:24,348 INFO L175 Difference]: Start difference. First operand has 255 places, 233 transitions, 2572 flow. Second operand 10 states and 107 transitions. [2024-06-28 00:03:24,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 245 transitions, 3108 flow [2024-06-28 00:03:24,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 245 transitions, 3011 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:24,562 INFO L231 Difference]: Finished difference. Result has 259 places, 233 transitions, 2556 flow [2024-06-28 00:03:24,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2556, PETRI_PLACES=259, PETRI_TRANSITIONS=233} [2024-06-28 00:03:24,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-28 00:03:24,562 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 233 transitions, 2556 flow [2024-06-28 00:03:24,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:24,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:24,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:24,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:03:24,562 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:24,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1670325976, now seen corresponding path program 8 times [2024-06-28 00:03:24,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:24,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083326634] [2024-06-28 00:03:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:24,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:25,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:25,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083326634] [2024-06-28 00:03:25,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083326634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:25,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:25,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:25,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293339509] [2024-06-28 00:03:25,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:25,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:25,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:25,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:25,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:26,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:26,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 233 transitions, 2556 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:26,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:26,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:26,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:26,387 INFO L124 PetriNetUnfolderBase]: 544/969 cut-off events. [2024-06-28 00:03:26,387 INFO L125 PetriNetUnfolderBase]: For 76693/76693 co-relation queries the response was YES. [2024-06-28 00:03:26,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6861 conditions, 969 events. 544/969 cut-off events. For 76693/76693 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4763 event pairs, 40 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 6737. Up to 592 conditions per place. [2024-06-28 00:03:26,398 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 176 selfloop transitions, 72 changer transitions 0/250 dead transitions. [2024-06-28 00:03:26,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 250 transitions, 3256 flow [2024-06-28 00:03:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 00:03:26,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 00:03:26,399 INFO L175 Difference]: Start difference. First operand has 259 places, 233 transitions, 2556 flow. Second operand 9 states and 109 transitions. [2024-06-28 00:03:26,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 250 transitions, 3256 flow [2024-06-28 00:03:26,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 250 transitions, 3174 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:26,633 INFO L231 Difference]: Finished difference. Result has 259 places, 234 transitions, 2636 flow [2024-06-28 00:03:26,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2474, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2636, PETRI_PLACES=259, PETRI_TRANSITIONS=234} [2024-06-28 00:03:26,634 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-28 00:03:26,634 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 234 transitions, 2636 flow [2024-06-28 00:03:26,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:26,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:26,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:26,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:03:26,634 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:26,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:26,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1672203646, now seen corresponding path program 9 times [2024-06-28 00:03:26,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:26,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916806204] [2024-06-28 00:03:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:26,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:28,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:28,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916806204] [2024-06-28 00:03:28,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916806204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:28,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:28,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:28,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580773625] [2024-06-28 00:03:28,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:28,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:28,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:28,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:28,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:28,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:28,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 234 transitions, 2636 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:28,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:28,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:28,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:28,516 INFO L124 PetriNetUnfolderBase]: 548/977 cut-off events. [2024-06-28 00:03:28,516 INFO L125 PetriNetUnfolderBase]: For 78730/78730 co-relation queries the response was YES. [2024-06-28 00:03:28,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7050 conditions, 977 events. 548/977 cut-off events. For 78730/78730 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4824 event pairs, 63 based on Foata normal form. 2/977 useless extension candidates. Maximal degree in co-relation 6925. Up to 780 conditions per place. [2024-06-28 00:03:28,527 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 183 selfloop transitions, 63 changer transitions 0/248 dead transitions. [2024-06-28 00:03:28,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 248 transitions, 3174 flow [2024-06-28 00:03:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 00:03:28,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 00:03:28,528 INFO L175 Difference]: Start difference. First operand has 259 places, 234 transitions, 2636 flow. Second operand 9 states and 109 transitions. [2024-06-28 00:03:28,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 248 transitions, 3174 flow [2024-06-28 00:03:28,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 248 transitions, 3041 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:28,745 INFO L231 Difference]: Finished difference. Result has 261 places, 235 transitions, 2652 flow [2024-06-28 00:03:28,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2652, PETRI_PLACES=261, PETRI_TRANSITIONS=235} [2024-06-28 00:03:28,745 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-28 00:03:28,745 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 235 transitions, 2652 flow [2024-06-28 00:03:28,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:28,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:28,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:28,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:03:28,746 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:28,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:28,746 INFO L85 PathProgramCache]: Analyzing trace with hash 35787693, now seen corresponding path program 13 times [2024-06-28 00:03:28,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:28,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967580050] [2024-06-28 00:03:28,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:28,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:30,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:30,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967580050] [2024-06-28 00:03:30,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967580050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:30,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:30,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269164844] [2024-06-28 00:03:30,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:30,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:30,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:30,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:30,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 235 transitions, 2652 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:30,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:30,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:30,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:30,770 INFO L124 PetriNetUnfolderBase]: 551/982 cut-off events. [2024-06-28 00:03:30,770 INFO L125 PetriNetUnfolderBase]: For 75693/75693 co-relation queries the response was YES. [2024-06-28 00:03:30,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7047 conditions, 982 events. 551/982 cut-off events. For 75693/75693 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4861 event pairs, 69 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 6922. Up to 687 conditions per place. [2024-06-28 00:03:30,780 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 152 selfloop transitions, 98 changer transitions 0/252 dead transitions. [2024-06-28 00:03:30,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 252 transitions, 3372 flow [2024-06-28 00:03:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 00:03:30,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-28 00:03:30,781 INFO L175 Difference]: Start difference. First operand has 261 places, 235 transitions, 2652 flow. Second operand 9 states and 113 transitions. [2024-06-28 00:03:30,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 252 transitions, 3372 flow [2024-06-28 00:03:30,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 252 transitions, 3241 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:30,971 INFO L231 Difference]: Finished difference. Result has 262 places, 239 transitions, 2764 flow [2024-06-28 00:03:30,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2764, PETRI_PLACES=262, PETRI_TRANSITIONS=239} [2024-06-28 00:03:30,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 00:03:30,972 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 239 transitions, 2764 flow [2024-06-28 00:03:30,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:30,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:30,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:30,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:03:30,973 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:30,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1672199926, now seen corresponding path program 10 times [2024-06-28 00:03:30,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:30,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109976631] [2024-06-28 00:03:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:32,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:32,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109976631] [2024-06-28 00:03:32,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109976631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:32,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:32,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:32,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661455867] [2024-06-28 00:03:32,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:32,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:32,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:32,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:32,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 239 transitions, 2764 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:32,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:32,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:32,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:32,850 INFO L124 PetriNetUnfolderBase]: 555/990 cut-off events. [2024-06-28 00:03:32,850 INFO L125 PetriNetUnfolderBase]: For 78839/78839 co-relation queries the response was YES. [2024-06-28 00:03:32,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7167 conditions, 990 events. 555/990 cut-off events. For 78839/78839 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4916 event pairs, 59 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 7042. Up to 763 conditions per place. [2024-06-28 00:03:32,861 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 188 selfloop transitions, 64 changer transitions 0/254 dead transitions. [2024-06-28 00:03:32,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 254 transitions, 3313 flow [2024-06-28 00:03:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 00:03:32,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 00:03:32,863 INFO L175 Difference]: Start difference. First operand has 262 places, 239 transitions, 2764 flow. Second operand 9 states and 111 transitions. [2024-06-28 00:03:32,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 254 transitions, 3313 flow [2024-06-28 00:03:33,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 254 transitions, 3222 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:33,139 INFO L231 Difference]: Finished difference. Result has 265 places, 240 transitions, 2820 flow [2024-06-28 00:03:33,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2820, PETRI_PLACES=265, PETRI_TRANSITIONS=240} [2024-06-28 00:03:33,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-28 00:03:33,140 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 240 transitions, 2820 flow [2024-06-28 00:03:33,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:33,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:33,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:03:33,140 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:33,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash 427391163, now seen corresponding path program 14 times [2024-06-28 00:03:33,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:33,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791271085] [2024-06-28 00:03:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:33,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:34,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791271085] [2024-06-28 00:03:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791271085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:34,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:34,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:34,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925801827] [2024-06-28 00:03:34,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:34,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:34,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:34,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:34,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:34,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 240 transitions, 2820 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:34,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:34,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:34,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:35,522 INFO L124 PetriNetUnfolderBase]: 558/995 cut-off events. [2024-06-28 00:03:35,523 INFO L125 PetriNetUnfolderBase]: For 75950/75950 co-relation queries the response was YES. [2024-06-28 00:03:35,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 995 events. 558/995 cut-off events. For 75950/75950 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4933 event pairs, 67 based on Foata normal form. 1/994 useless extension candidates. Maximal degree in co-relation 7177. Up to 832 conditions per place. [2024-06-28 00:03:35,533 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 185 selfloop transitions, 65 changer transitions 0/252 dead transitions. [2024-06-28 00:03:35,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 252 transitions, 3362 flow [2024-06-28 00:03:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 00:03:35,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 00:03:35,534 INFO L175 Difference]: Start difference. First operand has 265 places, 240 transitions, 2820 flow. Second operand 9 states and 100 transitions. [2024-06-28 00:03:35,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 252 transitions, 3362 flow [2024-06-28 00:03:35,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 252 transitions, 3228 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:35,741 INFO L231 Difference]: Finished difference. Result has 266 places, 242 transitions, 2846 flow [2024-06-28 00:03:35,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2846, PETRI_PLACES=266, PETRI_TRANSITIONS=242} [2024-06-28 00:03:35,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 00:03:35,742 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 242 transitions, 2846 flow [2024-06-28 00:03:35,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:35,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:35,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:35,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:03:35,742 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:35,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:35,743 INFO L85 PathProgramCache]: Analyzing trace with hash 561692619, now seen corresponding path program 15 times [2024-06-28 00:03:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:35,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978296409] [2024-06-28 00:03:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:35,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:37,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:37,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978296409] [2024-06-28 00:03:37,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978296409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:37,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:37,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:37,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375437951] [2024-06-28 00:03:37,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:37,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:37,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:37,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:37,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:37,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:37,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 242 transitions, 2846 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:37,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:37,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:37,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:37,740 INFO L124 PetriNetUnfolderBase]: 561/1000 cut-off events. [2024-06-28 00:03:37,740 INFO L125 PetriNetUnfolderBase]: For 75932/75932 co-relation queries the response was YES. [2024-06-28 00:03:37,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7318 conditions, 1000 events. 561/1000 cut-off events. For 75932/75932 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 4987 event pairs, 65 based on Foata normal form. 1/999 useless extension candidates. Maximal degree in co-relation 7192. Up to 819 conditions per place. [2024-06-28 00:03:37,755 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 180 selfloop transitions, 71 changer transitions 0/253 dead transitions. [2024-06-28 00:03:37,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 253 transitions, 3392 flow [2024-06-28 00:03:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:03:37,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 00:03:37,757 INFO L175 Difference]: Start difference. First operand has 266 places, 242 transitions, 2846 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:03:37,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 253 transitions, 3392 flow [2024-06-28 00:03:38,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 253 transitions, 3257 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:38,051 INFO L231 Difference]: Finished difference. Result has 266 places, 244 transitions, 2887 flow [2024-06-28 00:03:38,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2711, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2887, PETRI_PLACES=266, PETRI_TRANSITIONS=244} [2024-06-28 00:03:38,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 00:03:38,051 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 244 transitions, 2887 flow [2024-06-28 00:03:38,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:38,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:38,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:38,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:03:38,052 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:38,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:38,053 INFO L85 PathProgramCache]: Analyzing trace with hash 561548314, now seen corresponding path program 11 times [2024-06-28 00:03:38,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:38,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463424214] [2024-06-28 00:03:38,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:38,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:39,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:39,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463424214] [2024-06-28 00:03:39,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463424214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:39,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:39,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:39,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204652594] [2024-06-28 00:03:39,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:39,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:39,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:39,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:39,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:39,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 244 transitions, 2887 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:39,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:39,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:39,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:39,974 INFO L124 PetriNetUnfolderBase]: 565/1008 cut-off events. [2024-06-28 00:03:39,974 INFO L125 PetriNetUnfolderBase]: For 79060/79060 co-relation queries the response was YES. [2024-06-28 00:03:39,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7370 conditions, 1008 events. 565/1008 cut-off events. For 79060/79060 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5040 event pairs, 63 based on Foata normal form. 2/1008 useless extension candidates. Maximal degree in co-relation 7244. Up to 874 conditions per place. [2024-06-28 00:03:39,983 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 205 selfloop transitions, 49 changer transitions 0/256 dead transitions. [2024-06-28 00:03:39,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 256 transitions, 3434 flow [2024-06-28 00:03:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 00:03:39,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-28 00:03:39,984 INFO L175 Difference]: Start difference. First operand has 266 places, 244 transitions, 2887 flow. Second operand 8 states and 101 transitions. [2024-06-28 00:03:39,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 256 transitions, 3434 flow [2024-06-28 00:03:40,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 256 transitions, 3283 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:40,226 INFO L231 Difference]: Finished difference. Result has 267 places, 245 transitions, 2855 flow [2024-06-28 00:03:40,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2855, PETRI_PLACES=267, PETRI_TRANSITIONS=245} [2024-06-28 00:03:40,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-28 00:03:40,227 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 245 transitions, 2855 flow [2024-06-28 00:03:40,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:40,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:40,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:40,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:03:40,227 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:40,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:40,227 INFO L85 PathProgramCache]: Analyzing trace with hash 561548469, now seen corresponding path program 16 times [2024-06-28 00:03:40,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:40,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586135817] [2024-06-28 00:03:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:40,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:41,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:41,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586135817] [2024-06-28 00:03:41,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586135817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:41,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:41,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:41,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103235703] [2024-06-28 00:03:41,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:41,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:41,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:41,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:41,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:41,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:41,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 245 transitions, 2855 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:41,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:41,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:41,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:42,430 INFO L124 PetriNetUnfolderBase]: 568/1013 cut-off events. [2024-06-28 00:03:42,431 INFO L125 PetriNetUnfolderBase]: For 76003/76003 co-relation queries the response was YES. [2024-06-28 00:03:42,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7367 conditions, 1013 events. 568/1013 cut-off events. For 76003/76003 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5077 event pairs, 67 based on Foata normal form. 1/1012 useless extension candidates. Maximal degree in co-relation 7242. Up to 820 conditions per place. [2024-06-28 00:03:42,444 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 76 changer transitions 0/257 dead transitions. [2024-06-28 00:03:42,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 257 transitions, 3415 flow [2024-06-28 00:03:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 00:03:42,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-28 00:03:42,445 INFO L175 Difference]: Start difference. First operand has 267 places, 245 transitions, 2855 flow. Second operand 8 states and 105 transitions. [2024-06-28 00:03:42,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 257 transitions, 3415 flow [2024-06-28 00:03:42,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 257 transitions, 3309 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:42,714 INFO L231 Difference]: Finished difference. Result has 268 places, 247 transitions, 2939 flow [2024-06-28 00:03:42,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2939, PETRI_PLACES=268, PETRI_TRANSITIONS=247} [2024-06-28 00:03:42,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 00:03:42,715 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 247 transitions, 2939 flow [2024-06-28 00:03:42,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:42,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:42,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:42,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:03:42,716 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:42,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:42,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1758891736, now seen corresponding path program 12 times [2024-06-28 00:03:42,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:42,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427302703] [2024-06-28 00:03:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:42,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:44,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:44,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427302703] [2024-06-28 00:03:44,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427302703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:44,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:44,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:44,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649678059] [2024-06-28 00:03:44,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:44,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:44,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:44,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:44,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:44,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:44,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 247 transitions, 2939 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:44,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:44,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:44,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:44,592 INFO L124 PetriNetUnfolderBase]: 572/1021 cut-off events. [2024-06-28 00:03:44,593 INFO L125 PetriNetUnfolderBase]: For 79068/79068 co-relation queries the response was YES. [2024-06-28 00:03:44,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7455 conditions, 1021 events. 572/1021 cut-off events. For 79068/79068 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5131 event pairs, 61 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 7330. Up to 847 conditions per place. [2024-06-28 00:03:44,610 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 204 selfloop transitions, 54 changer transitions 0/260 dead transitions. [2024-06-28 00:03:44,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 260 transitions, 3498 flow [2024-06-28 00:03:44,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 00:03:44,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:03:44,614 INFO L175 Difference]: Start difference. First operand has 268 places, 247 transitions, 2939 flow. Second operand 9 states and 108 transitions. [2024-06-28 00:03:44,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 260 transitions, 3498 flow [2024-06-28 00:03:44,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 260 transitions, 3338 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:44,838 INFO L231 Difference]: Finished difference. Result has 271 places, 248 transitions, 2910 flow [2024-06-28 00:03:44,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2910, PETRI_PLACES=271, PETRI_TRANSITIONS=248} [2024-06-28 00:03:44,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-28 00:03:44,838 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 248 transitions, 2910 flow [2024-06-28 00:03:44,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:44,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:44,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:44,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:03:44,838 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:44,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1631483936, now seen corresponding path program 13 times [2024-06-28 00:03:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:44,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351671571] [2024-06-28 00:03:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:46,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:46,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351671571] [2024-06-28 00:03:46,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351671571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:46,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:46,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310348802] [2024-06-28 00:03:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:46,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:46,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:46,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 248 transitions, 2910 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:46,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:46,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:46,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:46,715 INFO L124 PetriNetUnfolderBase]: 576/1031 cut-off events. [2024-06-28 00:03:46,715 INFO L125 PetriNetUnfolderBase]: For 81054/81054 co-relation queries the response was YES. [2024-06-28 00:03:46,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1031 events. 576/1031 cut-off events. For 81054/81054 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5211 event pairs, 41 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 7373. Up to 796 conditions per place. [2024-06-28 00:03:46,729 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 201 selfloop transitions, 64 changer transitions 0/267 dead transitions. [2024-06-28 00:03:46,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 267 transitions, 3670 flow [2024-06-28 00:03:46,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 00:03:46,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 00:03:46,731 INFO L175 Difference]: Start difference. First operand has 271 places, 248 transitions, 2910 flow. Second operand 9 states and 116 transitions. [2024-06-28 00:03:46,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 267 transitions, 3670 flow [2024-06-28 00:03:46,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 267 transitions, 3550 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:46,966 INFO L231 Difference]: Finished difference. Result has 272 places, 249 transitions, 2943 flow [2024-06-28 00:03:46,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2943, PETRI_PLACES=272, PETRI_TRANSITIONS=249} [2024-06-28 00:03:46,966 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-28 00:03:46,966 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 249 transitions, 2943 flow [2024-06-28 00:03:46,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:46,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:46,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:46,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:03:46,967 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:46,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1880830886, now seen corresponding path program 14 times [2024-06-28 00:03:46,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:46,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367493384] [2024-06-28 00:03:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:46,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:48,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:48,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367493384] [2024-06-28 00:03:48,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367493384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:48,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:48,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:48,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909627165] [2024-06-28 00:03:48,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:48,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:48,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:48,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:48,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:48,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:48,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 249 transitions, 2943 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:48,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:48,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:48,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:48,916 INFO L124 PetriNetUnfolderBase]: 573/1026 cut-off events. [2024-06-28 00:03:48,916 INFO L125 PetriNetUnfolderBase]: For 74938/74938 co-relation queries the response was YES. [2024-06-28 00:03:48,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7345 conditions, 1026 events. 573/1026 cut-off events. For 74938/74938 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5211 event pairs, 67 based on Foata normal form. 2/1026 useless extension candidates. Maximal degree in co-relation 7218. Up to 865 conditions per place. [2024-06-28 00:03:48,927 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 206 selfloop transitions, 57 changer transitions 0/265 dead transitions. [2024-06-28 00:03:48,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 265 transitions, 3520 flow [2024-06-28 00:03:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 00:03:48,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-28 00:03:48,928 INFO L175 Difference]: Start difference. First operand has 272 places, 249 transitions, 2943 flow. Second operand 8 states and 108 transitions. [2024-06-28 00:03:48,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 265 transitions, 3520 flow [2024-06-28 00:03:49,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 265 transitions, 3352 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:49,154 INFO L231 Difference]: Finished difference. Result has 272 places, 249 transitions, 2895 flow [2024-06-28 00:03:49,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2895, PETRI_PLACES=272, PETRI_TRANSITIONS=249} [2024-06-28 00:03:49,155 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-28 00:03:49,155 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 249 transitions, 2895 flow [2024-06-28 00:03:49,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:49,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:49,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:49,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:03:49,155 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:49,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1880830731, now seen corresponding path program 17 times [2024-06-28 00:03:49,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:49,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084472847] [2024-06-28 00:03:49,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:49,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:50,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:50,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084472847] [2024-06-28 00:03:50,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084472847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:50,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:50,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:50,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811142272] [2024-06-28 00:03:50,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:50,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:50,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:50,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 249 transitions, 2895 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:50,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:50,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:50,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:51,275 INFO L124 PetriNetUnfolderBase]: 576/1031 cut-off events. [2024-06-28 00:03:51,275 INFO L125 PetriNetUnfolderBase]: For 71554/71554 co-relation queries the response was YES. [2024-06-28 00:03:51,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 1031 events. 576/1031 cut-off events. For 71554/71554 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5225 event pairs, 70 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 7174. Up to 792 conditions per place. [2024-06-28 00:03:51,289 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 96 changer transitions 0/267 dead transitions. [2024-06-28 00:03:51,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 267 transitions, 3664 flow [2024-06-28 00:03:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:51,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:03:51,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:03:51,290 INFO L175 Difference]: Start difference. First operand has 272 places, 249 transitions, 2895 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:03:51,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 267 transitions, 3664 flow [2024-06-28 00:03:51,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 267 transitions, 3511 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:51,565 INFO L231 Difference]: Finished difference. Result has 272 places, 251 transitions, 2974 flow [2024-06-28 00:03:51,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2974, PETRI_PLACES=272, PETRI_TRANSITIONS=251} [2024-06-28 00:03:51,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-28 00:03:51,566 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 251 transitions, 2974 flow [2024-06-28 00:03:51,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:51,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:51,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:51,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:03:51,566 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:51,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:51,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1222295953, now seen corresponding path program 18 times [2024-06-28 00:03:51,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:51,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908365547] [2024-06-28 00:03:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:51,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908365547] [2024-06-28 00:03:53,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908365547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:53,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:53,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:53,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480351317] [2024-06-28 00:03:53,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:53,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:53,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:53,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 251 transitions, 2974 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:53,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:53,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:53,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:53,596 INFO L124 PetriNetUnfolderBase]: 579/1036 cut-off events. [2024-06-28 00:03:53,596 INFO L125 PetriNetUnfolderBase]: For 71511/71511 co-relation queries the response was YES. [2024-06-28 00:03:53,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 1036 events. 579/1036 cut-off events. For 71511/71511 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5242 event pairs, 70 based on Foata normal form. 1/1035 useless extension candidates. Maximal degree in co-relation 7217. Up to 808 conditions per place. [2024-06-28 00:03:53,607 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 91 changer transitions 0/268 dead transitions. [2024-06-28 00:03:53,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 268 transitions, 3747 flow [2024-06-28 00:03:53,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:03:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:03:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 00:03:53,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4792626728110599 [2024-06-28 00:03:53,608 INFO L175 Difference]: Start difference. First operand has 272 places, 251 transitions, 2974 flow. Second operand 7 states and 104 transitions. [2024-06-28 00:03:53,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 268 transitions, 3747 flow [2024-06-28 00:03:53,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 268 transitions, 3506 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:53,805 INFO L231 Difference]: Finished difference. Result has 271 places, 253 transitions, 2959 flow [2024-06-28 00:03:53,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2739, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2959, PETRI_PLACES=271, PETRI_TRANSITIONS=253} [2024-06-28 00:03:53,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-28 00:03:53,805 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 253 transitions, 2959 flow [2024-06-28 00:03:53,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:53,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:53,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:53,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:03:53,806 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:53,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1222301533, now seen corresponding path program 19 times [2024-06-28 00:03:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517506266] [2024-06-28 00:03:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:53,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:55,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:55,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517506266] [2024-06-28 00:03:55,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517506266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:55,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:55,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:55,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274870480] [2024-06-28 00:03:55,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:55,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:55,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:55,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:55,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:55,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:55,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 253 transitions, 2959 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:55,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:55,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:55,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:56,229 INFO L124 PetriNetUnfolderBase]: 582/1039 cut-off events. [2024-06-28 00:03:56,229 INFO L125 PetriNetUnfolderBase]: For 71486/71486 co-relation queries the response was YES. [2024-06-28 00:03:56,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7346 conditions, 1039 events. 582/1039 cut-off events. For 71486/71486 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5248 event pairs, 65 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 7221. Up to 876 conditions per place. [2024-06-28 00:03:56,239 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 200 selfloop transitions, 63 changer transitions 0/265 dead transitions. [2024-06-28 00:03:56,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 265 transitions, 3543 flow [2024-06-28 00:03:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 00:03:56,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 00:03:56,240 INFO L175 Difference]: Start difference. First operand has 271 places, 253 transitions, 2959 flow. Second operand 9 states and 100 transitions. [2024-06-28 00:03:56,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 265 transitions, 3543 flow [2024-06-28 00:03:56,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 265 transitions, 3338 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:56,453 INFO L231 Difference]: Finished difference. Result has 274 places, 255 transitions, 2926 flow [2024-06-28 00:03:56,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2926, PETRI_PLACES=274, PETRI_TRANSITIONS=255} [2024-06-28 00:03:56,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 00:03:56,454 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 255 transitions, 2926 flow [2024-06-28 00:03:56,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:56,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:56,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:56,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:03:56,454 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:56,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1875318404, now seen corresponding path program 11 times [2024-06-28 00:03:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:56,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203194323] [2024-06-28 00:03:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:56,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:58,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:58,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203194323] [2024-06-28 00:03:58,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203194323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:58,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:58,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:58,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235821021] [2024-06-28 00:03:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:58,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:58,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:58,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:58,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:58,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:58,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 255 transitions, 2926 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:58,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:58,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:58,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:59,220 INFO L124 PetriNetUnfolderBase]: 598/1065 cut-off events. [2024-06-28 00:03:59,220 INFO L125 PetriNetUnfolderBase]: For 80911/80911 co-relation queries the response was YES. [2024-06-28 00:03:59,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7548 conditions, 1065 events. 598/1065 cut-off events. For 80911/80911 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5402 event pairs, 66 based on Foata normal form. 2/1065 useless extension candidates. Maximal degree in co-relation 7422. Up to 748 conditions per place. [2024-06-28 00:03:59,231 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 184 selfloop transitions, 89 changer transitions 0/275 dead transitions. [2024-06-28 00:03:59,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 275 transitions, 3884 flow [2024-06-28 00:03:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 00:03:59,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-28 00:03:59,235 INFO L175 Difference]: Start difference. First operand has 274 places, 255 transitions, 2926 flow. Second operand 8 states and 106 transitions. [2024-06-28 00:03:59,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 275 transitions, 3884 flow [2024-06-28 00:03:59,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 275 transitions, 3737 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:59,572 INFO L231 Difference]: Finished difference. Result has 274 places, 259 transitions, 3005 flow [2024-06-28 00:03:59,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3005, PETRI_PLACES=274, PETRI_TRANSITIONS=259} [2024-06-28 00:03:59,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 00:03:59,573 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 259 transitions, 3005 flow [2024-06-28 00:03:59,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:59,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:59,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:59,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:03:59,574 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:59,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:59,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1222503560, now seen corresponding path program 12 times [2024-06-28 00:03:59,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:59,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515784829] [2024-06-28 00:03:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:59,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:01,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:01,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515784829] [2024-06-28 00:04:01,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515784829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:01,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:01,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:01,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469770150] [2024-06-28 00:04:01,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:01,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:01,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:01,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:01,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:01,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:01,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 259 transitions, 3005 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:01,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:01,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:01,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:02,539 INFO L124 PetriNetUnfolderBase]: 604/1075 cut-off events. [2024-06-28 00:04:02,539 INFO L125 PetriNetUnfolderBase]: For 81128/81128 co-relation queries the response was YES. [2024-06-28 00:04:02,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 1075 events. 604/1075 cut-off events. For 81128/81128 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5474 event pairs, 67 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 7564. Up to 754 conditions per place. [2024-06-28 00:04:02,550 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 83 changer transitions 0/279 dead transitions. [2024-06-28 00:04:02,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 279 transitions, 3963 flow [2024-06-28 00:04:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:04:02,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 00:04:02,551 INFO L175 Difference]: Start difference. First operand has 274 places, 259 transitions, 3005 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:04:02,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 279 transitions, 3963 flow [2024-06-28 00:04:02,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 279 transitions, 3826 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:02,750 INFO L231 Difference]: Finished difference. Result has 279 places, 261 transitions, 3065 flow [2024-06-28 00:04:02,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2874, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3065, PETRI_PLACES=279, PETRI_TRANSITIONS=261} [2024-06-28 00:04:02,751 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-28 00:04:02,751 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 261 transitions, 3065 flow [2024-06-28 00:04:02,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:02,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:02,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:02,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:04:02,751 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:02,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:02,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1875109154, now seen corresponding path program 13 times [2024-06-28 00:04:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:02,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442889095] [2024-06-28 00:04:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:04,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:04,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442889095] [2024-06-28 00:04:04,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442889095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:04,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:04,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:04,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076926025] [2024-06-28 00:04:04,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:04,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:04,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:04,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:04,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:04,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:04,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 261 transitions, 3065 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:04,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:04,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:04,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:05,697 INFO L124 PetriNetUnfolderBase]: 601/1071 cut-off events. [2024-06-28 00:04:05,698 INFO L125 PetriNetUnfolderBase]: For 75170/75170 co-relation queries the response was YES. [2024-06-28 00:04:05,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7526 conditions, 1071 events. 601/1071 cut-off events. For 75170/75170 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5454 event pairs, 60 based on Foata normal form. 2/1071 useless extension candidates. Maximal degree in co-relation 7400. Up to 811 conditions per place. [2024-06-28 00:04:05,709 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 217 selfloop transitions, 82 changer transitions 0/301 dead transitions. [2024-06-28 00:04:05,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 301 transitions, 4270 flow [2024-06-28 00:04:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:04:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:04:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 00:04:05,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 00:04:05,710 INFO L175 Difference]: Start difference. First operand has 279 places, 261 transitions, 3065 flow. Second operand 12 states and 136 transitions. [2024-06-28 00:04:05,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 301 transitions, 4270 flow [2024-06-28 00:04:05,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 301 transitions, 3953 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:05,972 INFO L231 Difference]: Finished difference. Result has 285 places, 282 transitions, 3372 flow [2024-06-28 00:04:05,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3372, PETRI_PLACES=285, PETRI_TRANSITIONS=282} [2024-06-28 00:04:05,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 00:04:05,973 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 282 transitions, 3372 flow [2024-06-28 00:04:05,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:05,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:05,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:05,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:04:05,974 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:05,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:05,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1216939153, now seen corresponding path program 20 times [2024-06-28 00:04:05,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:05,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050460591] [2024-06-28 00:04:05,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:05,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:07,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:07,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050460591] [2024-06-28 00:04:07,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050460591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:07,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:07,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:07,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729887402] [2024-06-28 00:04:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:07,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:07,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:07,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:07,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 282 transitions, 3372 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:07,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:07,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:07,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:08,484 INFO L124 PetriNetUnfolderBase]: 604/1078 cut-off events. [2024-06-28 00:04:08,484 INFO L125 PetriNetUnfolderBase]: For 76971/76971 co-relation queries the response was YES. [2024-06-28 00:04:08,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7582 conditions, 1078 events. 604/1078 cut-off events. For 76971/76971 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5523 event pairs, 78 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 7454. Up to 913 conditions per place. [2024-06-28 00:04:08,495 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 223 selfloop transitions, 72 changer transitions 0/297 dead transitions. [2024-06-28 00:04:08,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 297 transitions, 4042 flow [2024-06-28 00:04:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 00:04:08,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 00:04:08,496 INFO L175 Difference]: Start difference. First operand has 285 places, 282 transitions, 3372 flow. Second operand 9 states and 103 transitions. [2024-06-28 00:04:08,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 297 transitions, 4042 flow [2024-06-28 00:04:08,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 297 transitions, 3814 flow, removed 89 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:08,733 INFO L231 Difference]: Finished difference. Result has 287 places, 284 transitions, 3335 flow [2024-06-28 00:04:08,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3145, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3335, PETRI_PLACES=287, PETRI_TRANSITIONS=284} [2024-06-28 00:04:08,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-28 00:04:08,733 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 284 transitions, 3335 flow [2024-06-28 00:04:08,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:08,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:08,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:08,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:04:08,734 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:08,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:08,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1880680784, now seen corresponding path program 14 times [2024-06-28 00:04:08,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:08,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413024577] [2024-06-28 00:04:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:08,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:10,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:10,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413024577] [2024-06-28 00:04:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413024577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:10,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:10,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:10,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963266878] [2024-06-28 00:04:10,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:10,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:10,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:10,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:10,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:10,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:10,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 284 transitions, 3335 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:10,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:10,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:10,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:11,213 INFO L124 PetriNetUnfolderBase]: 599/1070 cut-off events. [2024-06-28 00:04:11,213 INFO L125 PetriNetUnfolderBase]: For 72019/72019 co-relation queries the response was YES. [2024-06-28 00:04:11,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7457 conditions, 1070 events. 599/1070 cut-off events. For 72019/72019 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5472 event pairs, 78 based on Foata normal form. 2/1070 useless extension candidates. Maximal degree in co-relation 7328. Up to 753 conditions per place. [2024-06-28 00:04:11,259 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 176 selfloop transitions, 121 changer transitions 0/299 dead transitions. [2024-06-28 00:04:11,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 299 transitions, 3981 flow [2024-06-28 00:04:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 00:04:11,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-28 00:04:11,260 INFO L175 Difference]: Start difference. First operand has 287 places, 284 transitions, 3335 flow. Second operand 8 states and 105 transitions. [2024-06-28 00:04:11,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 299 transitions, 3981 flow [2024-06-28 00:04:11,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 299 transitions, 3816 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:11,521 INFO L231 Difference]: Finished difference. Result has 287 places, 282 transitions, 3401 flow [2024-06-28 00:04:11,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3149, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3401, PETRI_PLACES=287, PETRI_TRANSITIONS=282} [2024-06-28 00:04:11,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-28 00:04:11,521 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 282 transitions, 3401 flow [2024-06-28 00:04:11,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:11,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:11,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:11,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:04:11,522 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:11,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1875116811, now seen corresponding path program 21 times [2024-06-28 00:04:11,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:11,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098182029] [2024-06-28 00:04:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:11,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:13,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:13,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098182029] [2024-06-28 00:04:13,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098182029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:13,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:13,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:13,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304101139] [2024-06-28 00:04:13,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:13,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:13,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:13,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:13,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:13,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:13,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 282 transitions, 3401 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:13,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:13,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:13,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:14,134 INFO L124 PetriNetUnfolderBase]: 597/1065 cut-off events. [2024-06-28 00:04:14,134 INFO L125 PetriNetUnfolderBase]: For 68953/68953 co-relation queries the response was YES. [2024-06-28 00:04:14,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 1065 events. 597/1065 cut-off events. For 68953/68953 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5430 event pairs, 64 based on Foata normal form. 1/1064 useless extension candidates. Maximal degree in co-relation 7318. Up to 902 conditions per place. [2024-06-28 00:04:14,147 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 225 selfloop transitions, 65 changer transitions 0/292 dead transitions. [2024-06-28 00:04:14,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 292 transitions, 4005 flow [2024-06-28 00:04:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 00:04:14,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:04:14,149 INFO L175 Difference]: Start difference. First operand has 287 places, 282 transitions, 3401 flow. Second operand 9 states and 108 transitions. [2024-06-28 00:04:14,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 292 transitions, 4005 flow [2024-06-28 00:04:14,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 292 transitions, 3627 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:14,471 INFO L231 Difference]: Finished difference. Result has 287 places, 282 transitions, 3161 flow [2024-06-28 00:04:14,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3023, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3161, PETRI_PLACES=287, PETRI_TRANSITIONS=282} [2024-06-28 00:04:14,471 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-28 00:04:14,471 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 282 transitions, 3161 flow [2024-06-28 00:04:14,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:14,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:14,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:14,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:04:14,471 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:14,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1603019189, now seen corresponding path program 1 times [2024-06-28 00:04:14,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:14,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953608828] [2024-06-28 00:04:14,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:14,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:16,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:16,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953608828] [2024-06-28 00:04:16,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953608828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:16,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:16,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:16,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435350469] [2024-06-28 00:04:16,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:16,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:16,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:16,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:16,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 282 transitions, 3161 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:16,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:16,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:16,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:16,711 INFO L124 PetriNetUnfolderBase]: 608/1086 cut-off events. [2024-06-28 00:04:16,712 INFO L125 PetriNetUnfolderBase]: For 78316/78316 co-relation queries the response was YES. [2024-06-28 00:04:16,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7512 conditions, 1086 events. 608/1086 cut-off events. For 78316/78316 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5579 event pairs, 131 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 7383. Up to 746 conditions per place. [2024-06-28 00:04:16,728 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 232 selfloop transitions, 67 changer transitions 0/301 dead transitions. [2024-06-28 00:04:16,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 301 transitions, 3983 flow [2024-06-28 00:04:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:04:16,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:04:16,729 INFO L175 Difference]: Start difference. First operand has 287 places, 282 transitions, 3161 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:04:16,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 301 transitions, 3983 flow [2024-06-28 00:04:17,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 301 transitions, 3757 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 00:04:17,012 INFO L231 Difference]: Finished difference. Result has 288 places, 284 transitions, 3093 flow [2024-06-28 00:04:17,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3093, PETRI_PLACES=288, PETRI_TRANSITIONS=284} [2024-06-28 00:04:17,013 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 00:04:17,013 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 284 transitions, 3093 flow [2024-06-28 00:04:17,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:17,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:17,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:17,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:04:17,013 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:17,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1661111639, now seen corresponding path program 2 times [2024-06-28 00:04:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:17,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885669101] [2024-06-28 00:04:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:17,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:18,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:18,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885669101] [2024-06-28 00:04:18,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885669101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:18,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:18,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761968589] [2024-06-28 00:04:18,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:18,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:18,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:18,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 284 transitions, 3093 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:18,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:18,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:18,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:19,181 INFO L124 PetriNetUnfolderBase]: 619/1107 cut-off events. [2024-06-28 00:04:19,181 INFO L125 PetriNetUnfolderBase]: For 85060/85060 co-relation queries the response was YES. [2024-06-28 00:04:19,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7629 conditions, 1107 events. 619/1107 cut-off events. For 85060/85060 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5720 event pairs, 136 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 7501. Up to 895 conditions per place. [2024-06-28 00:04:19,192 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 232 selfloop transitions, 67 changer transitions 0/301 dead transitions. [2024-06-28 00:04:19,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 301 transitions, 3913 flow [2024-06-28 00:04:19,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:04:19,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:04:19,193 INFO L175 Difference]: Start difference. First operand has 288 places, 284 transitions, 3093 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:04:19,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 301 transitions, 3913 flow [2024-06-28 00:04:19,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 301 transitions, 3810 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:19,440 INFO L231 Difference]: Finished difference. Result has 292 places, 286 transitions, 3150 flow [2024-06-28 00:04:19,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2998, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3150, PETRI_PLACES=292, PETRI_TRANSITIONS=286} [2024-06-28 00:04:19,440 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-28 00:04:19,440 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 286 transitions, 3150 flow [2024-06-28 00:04:19,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:19,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:19,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:19,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:04:19,441 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:19,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1825521349, now seen corresponding path program 3 times [2024-06-28 00:04:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:19,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226992232] [2024-06-28 00:04:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:19,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:21,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:21,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226992232] [2024-06-28 00:04:21,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226992232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:21,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:21,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:21,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693327970] [2024-06-28 00:04:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:21,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:21,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:21,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 286 transitions, 3150 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:21,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:21,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:21,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:21,682 INFO L124 PetriNetUnfolderBase]: 623/1115 cut-off events. [2024-06-28 00:04:21,682 INFO L125 PetriNetUnfolderBase]: For 87172/87172 co-relation queries the response was YES. [2024-06-28 00:04:21,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7752 conditions, 1115 events. 623/1115 cut-off events. For 87172/87172 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5786 event pairs, 142 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 7622. Up to 985 conditions per place. [2024-06-28 00:04:21,696 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 251 selfloop transitions, 46 changer transitions 0/299 dead transitions. [2024-06-28 00:04:21,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 299 transitions, 3782 flow [2024-06-28 00:04:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 00:04:21,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 00:04:21,697 INFO L175 Difference]: Start difference. First operand has 292 places, 286 transitions, 3150 flow. Second operand 11 states and 113 transitions. [2024-06-28 00:04:21,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 299 transitions, 3782 flow [2024-06-28 00:04:21,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 299 transitions, 3695 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:21,975 INFO L231 Difference]: Finished difference. Result has 296 places, 287 transitions, 3169 flow [2024-06-28 00:04:21,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3169, PETRI_PLACES=296, PETRI_TRANSITIONS=287} [2024-06-28 00:04:21,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-28 00:04:21,976 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 287 transitions, 3169 flow [2024-06-28 00:04:21,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:21,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:21,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:21,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:04:21,977 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:21,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:21,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1825521535, now seen corresponding path program 1 times [2024-06-28 00:04:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:21,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789647050] [2024-06-28 00:04:21,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:21,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:23,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:23,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789647050] [2024-06-28 00:04:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789647050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:23,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:23,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:23,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364028857] [2024-06-28 00:04:23,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:23,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:23,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:23,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:23,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 287 transitions, 3169 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:23,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:23,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:23,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:24,299 INFO L124 PetriNetUnfolderBase]: 639/1141 cut-off events. [2024-06-28 00:04:24,300 INFO L125 PetriNetUnfolderBase]: For 96367/96367 co-relation queries the response was YES. [2024-06-28 00:04:24,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8106 conditions, 1141 events. 639/1141 cut-off events. For 96367/96367 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5911 event pairs, 145 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 7974. Up to 769 conditions per place. [2024-06-28 00:04:24,311 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 213 selfloop transitions, 90 changer transitions 0/305 dead transitions. [2024-06-28 00:04:24,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 305 transitions, 4015 flow [2024-06-28 00:04:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:24,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:04:24,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 00:04:24,312 INFO L175 Difference]: Start difference. First operand has 296 places, 287 transitions, 3169 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:04:24,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 305 transitions, 4015 flow [2024-06-28 00:04:24,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 305 transitions, 3905 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:24,636 INFO L231 Difference]: Finished difference. Result has 297 places, 291 transitions, 3272 flow [2024-06-28 00:04:24,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3059, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3272, PETRI_PLACES=297, PETRI_TRANSITIONS=291} [2024-06-28 00:04:24,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-28 00:04:24,636 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 291 transitions, 3272 flow [2024-06-28 00:04:24,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:24,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:24,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:24,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:04:24,637 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:24,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1661226959, now seen corresponding path program 4 times [2024-06-28 00:04:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142295758] [2024-06-28 00:04:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:24,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:26,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142295758] [2024-06-28 00:04:26,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142295758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:26,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:26,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:26,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57780103] [2024-06-28 00:04:26,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:26,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:26,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:26,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:26,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:26,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:26,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 291 transitions, 3272 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:26,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:26,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:26,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:26,997 INFO L124 PetriNetUnfolderBase]: 636/1136 cut-off events. [2024-06-28 00:04:26,997 INFO L125 PetriNetUnfolderBase]: For 91318/91318 co-relation queries the response was YES. [2024-06-28 00:04:27,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8047 conditions, 1136 events. 636/1136 cut-off events. For 91318/91318 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5885 event pairs, 140 based on Foata normal form. 2/1136 useless extension candidates. Maximal degree in co-relation 7914. Up to 945 conditions per place. [2024-06-28 00:04:27,008 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 235 selfloop transitions, 67 changer transitions 0/304 dead transitions. [2024-06-28 00:04:27,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 304 transitions, 3908 flow [2024-06-28 00:04:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:27,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 00:04:27,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 00:04:27,009 INFO L175 Difference]: Start difference. First operand has 297 places, 291 transitions, 3272 flow. Second operand 11 states and 115 transitions. [2024-06-28 00:04:27,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 304 transitions, 3908 flow [2024-06-28 00:04:27,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 304 transitions, 3815 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:27,341 INFO L231 Difference]: Finished difference. Result has 302 places, 291 transitions, 3317 flow [2024-06-28 00:04:27,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3317, PETRI_PLACES=302, PETRI_TRANSITIONS=291} [2024-06-28 00:04:27,341 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-28 00:04:27,341 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 291 transitions, 3317 flow [2024-06-28 00:04:27,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:27,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:27,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:27,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:04:27,342 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:27,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash 58358749, now seen corresponding path program 2 times [2024-06-28 00:04:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:27,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400527440] [2024-06-28 00:04:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:27,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:29,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:29,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400527440] [2024-06-28 00:04:29,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400527440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:29,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:29,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:29,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170428788] [2024-06-28 00:04:29,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:29,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:29,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:29,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 291 transitions, 3317 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:29,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:29,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:29,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:30,049 INFO L124 PetriNetUnfolderBase]: 642/1146 cut-off events. [2024-06-28 00:04:30,049 INFO L125 PetriNetUnfolderBase]: For 93473/93473 co-relation queries the response was YES. [2024-06-28 00:04:30,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8226 conditions, 1146 events. 642/1146 cut-off events. For 93473/93473 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5945 event pairs, 143 based on Foata normal form. 2/1146 useless extension candidates. Maximal degree in co-relation 8091. Up to 916 conditions per place. [2024-06-28 00:04:30,075 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 228 selfloop transitions, 75 changer transitions 0/305 dead transitions. [2024-06-28 00:04:30,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 305 transitions, 3978 flow [2024-06-28 00:04:30,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:04:30,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:04:30,077 INFO L175 Difference]: Start difference. First operand has 302 places, 291 transitions, 3317 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:04:30,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 305 transitions, 3978 flow [2024-06-28 00:04:30,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 305 transitions, 3838 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:04:30,515 INFO L231 Difference]: Finished difference. Result has 303 places, 293 transitions, 3351 flow [2024-06-28 00:04:30,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3177, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3351, PETRI_PLACES=303, PETRI_TRANSITIONS=293} [2024-06-28 00:04:30,515 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-28 00:04:30,515 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 293 transitions, 3351 flow [2024-06-28 00:04:30,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:30,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:30,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:30,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:04:30,516 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:30,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash -745666615, now seen corresponding path program 5 times [2024-06-28 00:04:30,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:30,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504180535] [2024-06-28 00:04:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:30,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:32,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:32,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504180535] [2024-06-28 00:04:32,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504180535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:32,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:32,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:32,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363396908] [2024-06-28 00:04:32,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:32,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:32,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:32,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:32,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:32,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:32,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 293 transitions, 3351 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:32,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:32,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:32,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:33,251 INFO L124 PetriNetUnfolderBase]: 646/1154 cut-off events. [2024-06-28 00:04:33,251 INFO L125 PetriNetUnfolderBase]: For 95641/95641 co-relation queries the response was YES. [2024-06-28 00:04:33,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8299 conditions, 1154 events. 646/1154 cut-off events. For 95641/95641 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6005 event pairs, 145 based on Foata normal form. 2/1154 useless extension candidates. Maximal degree in co-relation 8163. Up to 1043 conditions per place. [2024-06-28 00:04:33,263 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 42 changer transitions 0/305 dead transitions. [2024-06-28 00:04:33,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 305 transitions, 3991 flow [2024-06-28 00:04:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 00:04:33,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 00:04:33,264 INFO L175 Difference]: Start difference. First operand has 303 places, 293 transitions, 3351 flow. Second operand 11 states and 112 transitions. [2024-06-28 00:04:33,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 305 transitions, 3991 flow [2024-06-28 00:04:33,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 305 transitions, 3839 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:33,619 INFO L231 Difference]: Finished difference. Result has 305 places, 294 transitions, 3297 flow [2024-06-28 00:04:33,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3297, PETRI_PLACES=305, PETRI_TRANSITIONS=294} [2024-06-28 00:04:33,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-28 00:04:33,619 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 294 transitions, 3297 flow [2024-06-28 00:04:33,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:33,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:33,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:33,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:04:33,620 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:33,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash -745666429, now seen corresponding path program 3 times [2024-06-28 00:04:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:33,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159605214] [2024-06-28 00:04:33,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:33,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:35,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:35,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159605214] [2024-06-28 00:04:35,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159605214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:35,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016482862] [2024-06-28 00:04:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:35,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:35,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:35,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:35,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 294 transitions, 3297 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:35,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:35,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:35,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:36,431 INFO L124 PetriNetUnfolderBase]: 652/1164 cut-off events. [2024-06-28 00:04:36,431 INFO L125 PetriNetUnfolderBase]: For 97643/97643 co-relation queries the response was YES. [2024-06-28 00:04:36,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8304 conditions, 1164 events. 652/1164 cut-off events. For 97643/97643 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6077 event pairs, 145 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 8167. Up to 925 conditions per place. [2024-06-28 00:04:36,445 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 229 selfloop transitions, 78 changer transitions 0/309 dead transitions. [2024-06-28 00:04:36,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 309 transitions, 3978 flow [2024-06-28 00:04:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:04:36,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:04:36,446 INFO L175 Difference]: Start difference. First operand has 305 places, 294 transitions, 3297 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:04:36,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 309 transitions, 3978 flow [2024-06-28 00:04:36,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 309 transitions, 3892 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:36,790 INFO L231 Difference]: Finished difference. Result has 307 places, 296 transitions, 3394 flow [2024-06-28 00:04:36,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3211, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=307, PETRI_TRANSITIONS=296} [2024-06-28 00:04:36,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 00:04:36,790 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 296 transitions, 3394 flow [2024-06-28 00:04:36,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:36,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:36,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:04:36,791 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:36,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash 58174423, now seen corresponding path program 6 times [2024-06-28 00:04:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:36,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508063818] [2024-06-28 00:04:36,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:36,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:38,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:38,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508063818] [2024-06-28 00:04:38,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508063818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:38,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:38,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:38,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179042120] [2024-06-28 00:04:38,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:38,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:38,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:38,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:38,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:38,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 296 transitions, 3394 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:38,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:38,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:38,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:38,989 INFO L124 PetriNetUnfolderBase]: 663/1185 cut-off events. [2024-06-28 00:04:38,989 INFO L125 PetriNetUnfolderBase]: For 108078/108078 co-relation queries the response was YES. [2024-06-28 00:04:38,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8674 conditions, 1185 events. 663/1185 cut-off events. For 108078/108078 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6228 event pairs, 142 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 8536. Up to 1036 conditions per place. [2024-06-28 00:04:39,001 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 48 changer transitions 0/310 dead transitions. [2024-06-28 00:04:39,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 310 transitions, 4238 flow [2024-06-28 00:04:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:04:39,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 00:04:39,002 INFO L175 Difference]: Start difference. First operand has 307 places, 296 transitions, 3394 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:04:39,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 310 transitions, 4238 flow [2024-06-28 00:04:39,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 310 transitions, 4075 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:39,372 INFO L231 Difference]: Finished difference. Result has 308 places, 298 transitions, 3353 flow [2024-06-28 00:04:39,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3231, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3353, PETRI_PLACES=308, PETRI_TRANSITIONS=298} [2024-06-28 00:04:39,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-28 00:04:39,372 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 298 transitions, 3353 flow [2024-06-28 00:04:39,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:39,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:39,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:39,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:04:39,373 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:39,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:39,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1919240323, now seen corresponding path program 7 times [2024-06-28 00:04:39,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:39,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484583053] [2024-06-28 00:04:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:41,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:41,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484583053] [2024-06-28 00:04:41,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484583053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:41,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:41,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:41,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012322332] [2024-06-28 00:04:41,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:41,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:41,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:41,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:41,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 298 transitions, 3353 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:41,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:41,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:41,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:41,854 INFO L124 PetriNetUnfolderBase]: 660/1180 cut-off events. [2024-06-28 00:04:41,854 INFO L125 PetriNetUnfolderBase]: For 102099/102099 co-relation queries the response was YES. [2024-06-28 00:04:41,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8437 conditions, 1180 events. 660/1180 cut-off events. For 102099/102099 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6181 event pairs, 147 based on Foata normal form. 2/1180 useless extension candidates. Maximal degree in co-relation 8298. Up to 1092 conditions per place. [2024-06-28 00:04:41,870 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 272 selfloop transitions, 34 changer transitions 0/308 dead transitions. [2024-06-28 00:04:41,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 308 transitions, 3989 flow [2024-06-28 00:04:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 00:04:41,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 00:04:41,872 INFO L175 Difference]: Start difference. First operand has 308 places, 298 transitions, 3353 flow. Second operand 10 states and 104 transitions. [2024-06-28 00:04:41,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 308 transitions, 3989 flow [2024-06-28 00:04:42,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 308 transitions, 3922 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:42,370 INFO L231 Difference]: Finished difference. Result has 312 places, 298 transitions, 3358 flow [2024-06-28 00:04:42,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3286, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3358, PETRI_PLACES=312, PETRI_TRANSITIONS=298} [2024-06-28 00:04:42,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-28 00:04:42,371 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 298 transitions, 3358 flow [2024-06-28 00:04:42,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:42,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:42,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:42,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:04:42,371 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:42,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1045499457, now seen corresponding path program 4 times [2024-06-28 00:04:42,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:42,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827108766] [2024-06-28 00:04:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:42,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:44,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:44,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827108766] [2024-06-28 00:04:44,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827108766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:44,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:44,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:44,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761636612] [2024-06-28 00:04:44,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:44,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:44,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:44,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:44,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:44,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:44,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 298 transitions, 3358 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:44,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:44,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:44,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:45,480 INFO L124 PetriNetUnfolderBase]: 666/1190 cut-off events. [2024-06-28 00:04:45,480 INFO L125 PetriNetUnfolderBase]: For 104214/104214 co-relation queries the response was YES. [2024-06-28 00:04:45,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8546 conditions, 1190 events. 666/1190 cut-off events. For 104214/104214 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6252 event pairs, 149 based on Foata normal form. 2/1190 useless extension candidates. Maximal degree in co-relation 8405. Up to 1084 conditions per place. [2024-06-28 00:04:45,499 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 265 selfloop transitions, 43 changer transitions 0/310 dead transitions. [2024-06-28 00:04:45,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 310 transitions, 4026 flow [2024-06-28 00:04:45,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:04:45,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 00:04:45,500 INFO L175 Difference]: Start difference. First operand has 312 places, 298 transitions, 3358 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:04:45,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 310 transitions, 4026 flow [2024-06-28 00:04:45,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 310 transitions, 3951 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:45,928 INFO L231 Difference]: Finished difference. Result has 313 places, 300 transitions, 3400 flow [2024-06-28 00:04:45,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3400, PETRI_PLACES=313, PETRI_TRANSITIONS=300} [2024-06-28 00:04:45,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 00:04:45,928 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 300 transitions, 3400 flow [2024-06-28 00:04:45,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:45,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:45,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:04:45,929 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:45,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1050088263, now seen corresponding path program 8 times [2024-06-28 00:04:45,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:45,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870305871] [2024-06-28 00:04:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:47,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:47,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870305871] [2024-06-28 00:04:47,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870305871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:47,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:47,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:47,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227405367] [2024-06-28 00:04:47,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:47,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:47,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:47,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:47,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:47,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 300 transitions, 3400 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:47,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:47,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:47,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:48,231 INFO L124 PetriNetUnfolderBase]: 677/1211 cut-off events. [2024-06-28 00:04:48,232 INFO L125 PetriNetUnfolderBase]: For 115037/115037 co-relation queries the response was YES. [2024-06-28 00:04:48,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8870 conditions, 1211 events. 677/1211 cut-off events. For 115037/115037 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6399 event pairs, 146 based on Foata normal form. 2/1211 useless extension candidates. Maximal degree in co-relation 8728. Up to 1024 conditions per place. [2024-06-28 00:04:48,251 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 52 changer transitions 0/316 dead transitions. [2024-06-28 00:04:48,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 316 transitions, 4270 flow [2024-06-28 00:04:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:04:48,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:04:48,253 INFO L175 Difference]: Start difference. First operand has 313 places, 300 transitions, 3400 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:04:48,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 316 transitions, 4270 flow [2024-06-28 00:04:48,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 316 transitions, 4173 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:48,788 INFO L231 Difference]: Finished difference. Result has 316 places, 302 transitions, 3437 flow [2024-06-28 00:04:48,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3437, PETRI_PLACES=316, PETRI_TRANSITIONS=302} [2024-06-28 00:04:48,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 00:04:48,789 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 302 transitions, 3437 flow [2024-06-28 00:04:48,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:48,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:48,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:48,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:04:48,789 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:48,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:48,789 INFO L85 PathProgramCache]: Analyzing trace with hash 53710609, now seen corresponding path program 5 times [2024-06-28 00:04:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:48,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763821077] [2024-06-28 00:04:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:48,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:50,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:50,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763821077] [2024-06-28 00:04:50,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763821077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:50,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:50,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:50,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226552344] [2024-06-28 00:04:50,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:50,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:50,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:50,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:50,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:50,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 302 transitions, 3437 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:50,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:50,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:50,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:51,473 INFO L124 PetriNetUnfolderBase]: 683/1221 cut-off events. [2024-06-28 00:04:51,473 INFO L125 PetriNetUnfolderBase]: For 117665/117665 co-relation queries the response was YES. [2024-06-28 00:04:51,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8977 conditions, 1221 events. 683/1221 cut-off events. For 117665/117665 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6445 event pairs, 152 based on Foata normal form. 2/1221 useless extension candidates. Maximal degree in co-relation 8834. Up to 1103 conditions per place. [2024-06-28 00:04:51,486 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 267 selfloop transitions, 47 changer transitions 0/316 dead transitions. [2024-06-28 00:04:51,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 316 transitions, 4131 flow [2024-06-28 00:04:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:04:51,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:04:51,487 INFO L175 Difference]: Start difference. First operand has 316 places, 302 transitions, 3437 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:04:51,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 316 transitions, 4131 flow [2024-06-28 00:04:51,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 316 transitions, 4069 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:51,939 INFO L231 Difference]: Finished difference. Result has 321 places, 304 transitions, 3504 flow [2024-06-28 00:04:51,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3375, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3504, PETRI_PLACES=321, PETRI_TRANSITIONS=304} [2024-06-28 00:04:51,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 00:04:51,940 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 304 transitions, 3504 flow [2024-06-28 00:04:51,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:51,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:51,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:51,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:04:51,940 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:51,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash 53710423, now seen corresponding path program 9 times [2024-06-28 00:04:51,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:51,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375089404] [2024-06-28 00:04:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:51,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:53,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:53,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375089404] [2024-06-28 00:04:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375089404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:53,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:53,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996383758] [2024-06-28 00:04:53,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:53,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:53,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:53,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 304 transitions, 3504 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:53,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:53,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:53,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:54,262 INFO L124 PetriNetUnfolderBase]: 687/1229 cut-off events. [2024-06-28 00:04:54,263 INFO L125 PetriNetUnfolderBase]: For 120179/120179 co-relation queries the response was YES. [2024-06-28 00:04:54,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9103 conditions, 1229 events. 687/1229 cut-off events. For 120179/120179 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6502 event pairs, 152 based on Foata normal form. 2/1229 useless extension candidates. Maximal degree in co-relation 8958. Up to 1103 conditions per place. [2024-06-28 00:04:54,278 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 48 changer transitions 0/316 dead transitions. [2024-06-28 00:04:54,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 316 transitions, 4170 flow [2024-06-28 00:04:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 00:04:54,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 00:04:54,279 INFO L175 Difference]: Start difference. First operand has 321 places, 304 transitions, 3504 flow. Second operand 11 states and 114 transitions. [2024-06-28 00:04:54,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 316 transitions, 4170 flow [2024-06-28 00:04:54,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 316 transitions, 4024 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 00:04:54,791 INFO L231 Difference]: Finished difference. Result has 321 places, 305 transitions, 3472 flow [2024-06-28 00:04:54,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3472, PETRI_PLACES=321, PETRI_TRANSITIONS=305} [2024-06-28 00:04:54,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 00:04:54,791 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 305 transitions, 3472 flow [2024-06-28 00:04:54,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:54,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:54,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:54,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:04:54,791 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:54,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:54,792 INFO L85 PathProgramCache]: Analyzing trace with hash 53705773, now seen corresponding path program 10 times [2024-06-28 00:04:54,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:54,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753100204] [2024-06-28 00:04:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:54,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:56,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:56,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753100204] [2024-06-28 00:04:56,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753100204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:56,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:56,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29276655] [2024-06-28 00:04:56,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:56,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:56,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:56,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:56,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:56,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:56,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 305 transitions, 3472 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:56,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:56,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:56,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:57,072 INFO L124 PetriNetUnfolderBase]: 684/1224 cut-off events. [2024-06-28 00:04:57,072 INFO L125 PetriNetUnfolderBase]: For 113347/113347 co-relation queries the response was YES. [2024-06-28 00:04:57,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8871 conditions, 1224 events. 684/1224 cut-off events. For 113347/113347 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6487 event pairs, 149 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 8725. Up to 1084 conditions per place. [2024-06-28 00:04:57,090 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 49 changer transitions 0/317 dead transitions. [2024-06-28 00:04:57,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 317 transitions, 4130 flow [2024-06-28 00:04:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 00:04:57,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 00:04:57,091 INFO L175 Difference]: Start difference. First operand has 321 places, 305 transitions, 3472 flow. Second operand 11 states and 116 transitions. [2024-06-28 00:04:57,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 317 transitions, 4130 flow [2024-06-28 00:04:57,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 317 transitions, 4028 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:57,667 INFO L231 Difference]: Finished difference. Result has 323 places, 305 transitions, 3472 flow [2024-06-28 00:04:57,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3370, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3472, PETRI_PLACES=323, PETRI_TRANSITIONS=305} [2024-06-28 00:04:57,667 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-28 00:04:57,667 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 305 transitions, 3472 flow [2024-06-28 00:04:57,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:57,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:57,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:57,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:04:57,667 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:57,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:57,668 INFO L85 PathProgramCache]: Analyzing trace with hash -820744873, now seen corresponding path program 11 times [2024-06-28 00:04:57,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:57,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965652361] [2024-06-28 00:04:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:57,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:59,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:59,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965652361] [2024-06-28 00:04:59,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965652361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:59,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:59,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710561100] [2024-06-28 00:04:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:59,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:59,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:59,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 305 transitions, 3472 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:59,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:59,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:59,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:59,786 INFO L124 PetriNetUnfolderBase]: 688/1232 cut-off events. [2024-06-28 00:04:59,786 INFO L125 PetriNetUnfolderBase]: For 115682/115682 co-relation queries the response was YES. [2024-06-28 00:04:59,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8926 conditions, 1232 events. 688/1232 cut-off events. For 115682/115682 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6543 event pairs, 147 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 8779. Up to 1013 conditions per place. [2024-06-28 00:04:59,800 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 254 selfloop transitions, 67 changer transitions 0/323 dead transitions. [2024-06-28 00:04:59,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 323 transitions, 4364 flow [2024-06-28 00:04:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:59,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:04:59,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 00:04:59,801 INFO L175 Difference]: Start difference. First operand has 323 places, 305 transitions, 3472 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:04:59,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 323 transitions, 4364 flow [2024-06-28 00:05:00,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 323 transitions, 4221 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:05:00,227 INFO L231 Difference]: Finished difference. Result has 323 places, 306 transitions, 3479 flow [2024-06-28 00:05:00,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3329, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3479, PETRI_PLACES=323, PETRI_TRANSITIONS=306} [2024-06-28 00:05:00,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-28 00:05:00,227 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 306 transitions, 3479 flow [2024-06-28 00:05:00,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:00,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:00,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:00,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:05:00,228 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:00,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:00,228 INFO L85 PathProgramCache]: Analyzing trace with hash -820629553, now seen corresponding path program 12 times [2024-06-28 00:05:00,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:00,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910875369] [2024-06-28 00:05:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:00,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:01,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910875369] [2024-06-28 00:05:01,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910875369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:01,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:01,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:01,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597403211] [2024-06-28 00:05:01,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:01,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:01,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:01,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:01,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:01,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:01,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 306 transitions, 3479 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:01,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:01,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:01,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:02,329 INFO L124 PetriNetUnfolderBase]: 699/1253 cut-off events. [2024-06-28 00:05:02,329 INFO L125 PetriNetUnfolderBase]: For 127682/127682 co-relation queries the response was YES. [2024-06-28 00:05:02,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9205 conditions, 1253 events. 699/1253 cut-off events. For 127682/127682 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6694 event pairs, 154 based on Foata normal form. 2/1253 useless extension candidates. Maximal degree in co-relation 9058. Up to 1086 conditions per place. [2024-06-28 00:05:02,347 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 255 selfloop transitions, 66 changer transitions 0/323 dead transitions. [2024-06-28 00:05:02,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 323 transitions, 4383 flow [2024-06-28 00:05:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:05:02,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:05:02,348 INFO L175 Difference]: Start difference. First operand has 323 places, 306 transitions, 3479 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:05:02,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 323 transitions, 4383 flow [2024-06-28 00:05:03,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 323 transitions, 4135 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 00:05:03,068 INFO L231 Difference]: Finished difference. Result has 323 places, 308 transitions, 3397 flow [2024-06-28 00:05:03,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3397, PETRI_PLACES=323, PETRI_TRANSITIONS=308} [2024-06-28 00:05:03,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-28 00:05:03,069 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 308 transitions, 3397 flow [2024-06-28 00:05:03,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:03,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:03,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:03,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:05:03,070 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:03,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash -820624903, now seen corresponding path program 13 times [2024-06-28 00:05:03,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:03,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454229982] [2024-06-28 00:05:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:04,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454229982] [2024-06-28 00:05:04,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454229982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:04,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:04,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:04,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122210612] [2024-06-28 00:05:04,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:04,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:04,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:05,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:05,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 308 transitions, 3397 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:05,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:05,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:05,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:05,668 INFO L124 PetriNetUnfolderBase]: 696/1248 cut-off events. [2024-06-28 00:05:05,669 INFO L125 PetriNetUnfolderBase]: For 120336/120336 co-relation queries the response was YES. [2024-06-28 00:05:05,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8766 conditions, 1248 events. 696/1248 cut-off events. For 120336/120336 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6688 event pairs, 155 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 8620. Up to 1098 conditions per place. [2024-06-28 00:05:05,686 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 254 selfloop transitions, 65 changer transitions 0/321 dead transitions. [2024-06-28 00:05:05,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 321 transitions, 4069 flow [2024-06-28 00:05:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:05:05,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:05:05,687 INFO L175 Difference]: Start difference. First operand has 323 places, 308 transitions, 3397 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:05:05,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 321 transitions, 4069 flow [2024-06-28 00:05:06,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 321 transitions, 3970 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:06,306 INFO L231 Difference]: Finished difference. Result has 327 places, 308 transitions, 3432 flow [2024-06-28 00:05:06,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3432, PETRI_PLACES=327, PETRI_TRANSITIONS=308} [2024-06-28 00:05:06,307 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-28 00:05:06,307 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 308 transitions, 3432 flow [2024-06-28 00:05:06,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:06,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:06,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:06,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:05:06,307 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:06,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:06,307 INFO L85 PathProgramCache]: Analyzing trace with hash -820624717, now seen corresponding path program 6 times [2024-06-28 00:05:06,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:06,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062754525] [2024-06-28 00:05:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:06,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:08,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:08,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062754525] [2024-06-28 00:05:08,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062754525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:08,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:08,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111861098] [2024-06-28 00:05:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:08,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:08,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:08,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:08,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:08,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 308 transitions, 3432 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:08,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:08,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:08,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:08,968 INFO L124 PetriNetUnfolderBase]: 712/1274 cut-off events. [2024-06-28 00:05:08,968 INFO L125 PetriNetUnfolderBase]: For 132839/132839 co-relation queries the response was YES. [2024-06-28 00:05:08,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9226 conditions, 1274 events. 712/1274 cut-off events. For 132839/132839 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6845 event pairs, 157 based on Foata normal form. 2/1274 useless extension candidates. Maximal degree in co-relation 9078. Up to 1135 conditions per place. [2024-06-28 00:05:08,984 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 270 selfloop transitions, 55 changer transitions 0/327 dead transitions. [2024-06-28 00:05:08,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 327 transitions, 4392 flow [2024-06-28 00:05:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:05:08,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:05:08,985 INFO L175 Difference]: Start difference. First operand has 327 places, 308 transitions, 3432 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:05:08,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 327 transitions, 4392 flow [2024-06-28 00:05:09,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 327 transitions, 4260 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:09,545 INFO L231 Difference]: Finished difference. Result has 328 places, 312 transitions, 3479 flow [2024-06-28 00:05:09,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3300, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3479, PETRI_PLACES=328, PETRI_TRANSITIONS=312} [2024-06-28 00:05:09,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-28 00:05:09,545 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 312 transitions, 3479 flow [2024-06-28 00:05:09,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:09,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:09,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:09,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:05:09,545 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:09,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:09,546 INFO L85 PathProgramCache]: Analyzing trace with hash -816160903, now seen corresponding path program 14 times [2024-06-28 00:05:09,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:09,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482707690] [2024-06-28 00:05:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:09,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:11,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:11,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482707690] [2024-06-28 00:05:11,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482707690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:11,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:11,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:11,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580066407] [2024-06-28 00:05:11,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:11,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:11,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:11,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:11,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:11,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 312 transitions, 3479 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:11,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:11,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:11,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:11,760 INFO L124 PetriNetUnfolderBase]: 716/1282 cut-off events. [2024-06-28 00:05:11,761 INFO L125 PetriNetUnfolderBase]: For 135611/135611 co-relation queries the response was YES. [2024-06-28 00:05:11,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9281 conditions, 1282 events. 716/1282 cut-off events. For 135611/135611 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6912 event pairs, 149 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 9132. Up to 1093 conditions per place. [2024-06-28 00:05:11,776 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 65 changer transitions 0/328 dead transitions. [2024-06-28 00:05:11,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 328 transitions, 4383 flow [2024-06-28 00:05:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:05:11,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 00:05:11,778 INFO L175 Difference]: Start difference. First operand has 328 places, 312 transitions, 3479 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:05:11,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 328 transitions, 4383 flow [2024-06-28 00:05:12,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 328 transitions, 4295 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:12,323 INFO L231 Difference]: Finished difference. Result has 331 places, 313 transitions, 3535 flow [2024-06-28 00:05:12,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3535, PETRI_PLACES=331, PETRI_TRANSITIONS=313} [2024-06-28 00:05:12,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-28 00:05:12,324 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 313 transitions, 3535 flow [2024-06-28 00:05:12,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:12,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:12,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:12,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:05:12,325 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:12,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:12,326 INFO L85 PathProgramCache]: Analyzing trace with hash -815976577, now seen corresponding path program 7 times [2024-06-28 00:05:12,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:12,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918392797] [2024-06-28 00:05:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:12,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:14,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:14,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918392797] [2024-06-28 00:05:14,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918392797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:14,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:14,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:14,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945861234] [2024-06-28 00:05:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:14,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:14,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:14,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:14,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 313 transitions, 3535 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:14,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:14,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:14,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:15,090 INFO L124 PetriNetUnfolderBase]: 722/1292 cut-off events. [2024-06-28 00:05:15,091 INFO L125 PetriNetUnfolderBase]: For 138545/138545 co-relation queries the response was YES. [2024-06-28 00:05:15,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9459 conditions, 1292 events. 722/1292 cut-off events. For 138545/138545 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6974 event pairs, 152 based on Foata normal form. 2/1292 useless extension candidates. Maximal degree in co-relation 9308. Up to 1062 conditions per place. [2024-06-28 00:05:15,105 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 240 selfloop transitions, 87 changer transitions 0/329 dead transitions. [2024-06-28 00:05:15,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 329 transitions, 4277 flow [2024-06-28 00:05:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:05:15,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:05:15,106 INFO L175 Difference]: Start difference. First operand has 331 places, 313 transitions, 3535 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:05:15,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 329 transitions, 4277 flow [2024-06-28 00:05:15,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 329 transitions, 4102 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:15,622 INFO L231 Difference]: Finished difference. Result has 333 places, 315 transitions, 3578 flow [2024-06-28 00:05:15,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3360, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3578, PETRI_PLACES=333, PETRI_TRANSITIONS=315} [2024-06-28 00:05:15,623 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-28 00:05:15,623 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 315 transitions, 3578 flow [2024-06-28 00:05:15,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:15,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:15,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:15,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:05:15,625 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:15,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:15,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1919834783, now seen corresponding path program 8 times [2024-06-28 00:05:15,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:15,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056679527] [2024-06-28 00:05:15,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:15,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:17,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:17,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056679527] [2024-06-28 00:05:17,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056679527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:17,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:17,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:17,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086071075] [2024-06-28 00:05:17,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:17,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:17,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:17,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:17,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:17,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:17,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 315 transitions, 3578 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:17,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:17,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:17,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:18,608 INFO L124 PetriNetUnfolderBase]: 728/1302 cut-off events. [2024-06-28 00:05:18,608 INFO L125 PetriNetUnfolderBase]: For 141344/141344 co-relation queries the response was YES. [2024-06-28 00:05:18,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9510 conditions, 1302 events. 728/1302 cut-off events. For 141344/141344 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7041 event pairs, 157 based on Foata normal form. 2/1302 useless extension candidates. Maximal degree in co-relation 9359. Up to 1171 conditions per place. [2024-06-28 00:05:18,624 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 276 selfloop transitions, 53 changer transitions 0/331 dead transitions. [2024-06-28 00:05:18,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 331 transitions, 4524 flow [2024-06-28 00:05:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 00:05:18,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 00:05:18,625 INFO L175 Difference]: Start difference. First operand has 333 places, 315 transitions, 3578 flow. Second operand 10 states and 119 transitions. [2024-06-28 00:05:18,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 331 transitions, 4524 flow [2024-06-28 00:05:19,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 331 transitions, 4328 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:19,303 INFO L231 Difference]: Finished difference. Result has 334 places, 317 transitions, 3527 flow [2024-06-28 00:05:19,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3382, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3527, PETRI_PLACES=334, PETRI_TRANSITIONS=317} [2024-06-28 00:05:19,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-28 00:05:19,303 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 317 transitions, 3527 flow [2024-06-28 00:05:19,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:19,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:19,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:19,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:05:19,304 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:19,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:19,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1919834969, now seen corresponding path program 15 times [2024-06-28 00:05:19,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:19,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441445152] [2024-06-28 00:05:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:19,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:21,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:21,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441445152] [2024-06-28 00:05:21,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441445152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:21,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:21,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:21,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096021307] [2024-06-28 00:05:21,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:21,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:21,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:21,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:21,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:21,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:21,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 317 transitions, 3527 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:21,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:21,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:21,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:21,917 INFO L124 PetriNetUnfolderBase]: 732/1310 cut-off events. [2024-06-28 00:05:21,917 INFO L125 PetriNetUnfolderBase]: For 143762/143762 co-relation queries the response was YES. [2024-06-28 00:05:21,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9467 conditions, 1310 events. 732/1310 cut-off events. For 143762/143762 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7091 event pairs, 155 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 9315. Up to 1210 conditions per place. [2024-06-28 00:05:21,940 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 287 selfloop transitions, 41 changer transitions 0/330 dead transitions. [2024-06-28 00:05:21,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 330 transitions, 4223 flow [2024-06-28 00:05:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:05:21,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 00:05:21,941 INFO L175 Difference]: Start difference. First operand has 334 places, 317 transitions, 3527 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:05:21,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 330 transitions, 4223 flow [2024-06-28 00:05:22,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 330 transitions, 4096 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:22,778 INFO L231 Difference]: Finished difference. Result has 336 places, 318 transitions, 3496 flow [2024-06-28 00:05:22,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3400, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3496, PETRI_PLACES=336, PETRI_TRANSITIONS=318} [2024-06-28 00:05:22,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-28 00:05:22,779 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 318 transitions, 3496 flow [2024-06-28 00:05:22,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:22,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:22,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:22,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:05:22,780 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:22,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:22,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1919661803, now seen corresponding path program 9 times [2024-06-28 00:05:22,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:22,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801690550] [2024-06-28 00:05:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:22,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:24,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801690550] [2024-06-28 00:05:24,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801690550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:24,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:24,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:24,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723959618] [2024-06-28 00:05:24,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:24,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:24,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:24,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:24,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:24,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 318 transitions, 3496 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:24,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:24,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:24,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:25,265 INFO L124 PetriNetUnfolderBase]: 738/1320 cut-off events. [2024-06-28 00:05:25,265 INFO L125 PetriNetUnfolderBase]: For 146496/146496 co-relation queries the response was YES. [2024-06-28 00:05:25,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9519 conditions, 1320 events. 738/1320 cut-off events. For 146496/146496 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7178 event pairs, 151 based on Foata normal form. 2/1320 useless extension candidates. Maximal degree in co-relation 9366. Up to 1081 conditions per place. [2024-06-28 00:05:25,280 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 243 selfloop transitions, 90 changer transitions 0/335 dead transitions. [2024-06-28 00:05:25,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 335 transitions, 4262 flow [2024-06-28 00:05:25,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:05:25,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:05:25,281 INFO L175 Difference]: Start difference. First operand has 336 places, 318 transitions, 3496 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:05:25,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 335 transitions, 4262 flow [2024-06-28 00:05:26,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 335 transitions, 4178 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:26,014 INFO L231 Difference]: Finished difference. Result has 339 places, 320 transitions, 3639 flow [2024-06-28 00:05:26,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3412, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3639, PETRI_PLACES=339, PETRI_TRANSITIONS=320} [2024-06-28 00:05:26,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-28 00:05:26,015 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 320 transitions, 3639 flow [2024-06-28 00:05:26,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:26,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:26,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:26,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:05:26,015 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:26,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash -815983273, now seen corresponding path program 16 times [2024-06-28 00:05:26,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:26,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292381675] [2024-06-28 00:05:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:26,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:28,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:28,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292381675] [2024-06-28 00:05:28,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292381675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:28,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:28,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:28,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133338654] [2024-06-28 00:05:28,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:28,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:28,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:28,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:28,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:28,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:28,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 320 transitions, 3639 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:28,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:28,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:28,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:28,706 INFO L124 PetriNetUnfolderBase]: 742/1328 cut-off events. [2024-06-28 00:05:28,706 INFO L125 PetriNetUnfolderBase]: For 149737/149737 co-relation queries the response was YES. [2024-06-28 00:05:28,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9688 conditions, 1328 events. 742/1328 cut-off events. For 149737/149737 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7241 event pairs, 156 based on Foata normal form. 2/1328 useless extension candidates. Maximal degree in co-relation 9534. Up to 1217 conditions per place. [2024-06-28 00:05:28,729 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 283 selfloop transitions, 48 changer transitions 0/333 dead transitions. [2024-06-28 00:05:28,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 333 transitions, 4341 flow [2024-06-28 00:05:28,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:28,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 00:05:28,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 00:05:28,730 INFO L175 Difference]: Start difference. First operand has 339 places, 320 transitions, 3639 flow. Second operand 11 states and 113 transitions. [2024-06-28 00:05:28,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 333 transitions, 4341 flow [2024-06-28 00:05:29,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 333 transitions, 4134 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:29,223 INFO L231 Difference]: Finished difference. Result has 341 places, 321 transitions, 3544 flow [2024-06-28 00:05:29,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3432, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3544, PETRI_PLACES=341, PETRI_TRANSITIONS=321} [2024-06-28 00:05:29,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 00:05:29,224 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 321 transitions, 3544 flow [2024-06-28 00:05:29,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:29,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:29,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:29,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:05:29,224 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:29,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1753428209, now seen corresponding path program 17 times [2024-06-28 00:05:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:29,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197811658] [2024-06-28 00:05:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:30,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:30,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197811658] [2024-06-28 00:05:30,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197811658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:30,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:30,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:30,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880692657] [2024-06-28 00:05:30,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:30,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:30,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:30,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:30,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:31,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:31,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 321 transitions, 3544 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:31,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:31,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:31,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:31,724 INFO L124 PetriNetUnfolderBase]: 746/1336 cut-off events. [2024-06-28 00:05:31,724 INFO L125 PetriNetUnfolderBase]: For 152145/152145 co-relation queries the response was YES. [2024-06-28 00:05:31,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9621 conditions, 1336 events. 746/1336 cut-off events. For 152145/152145 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7287 event pairs, 156 based on Foata normal form. 2/1336 useless extension candidates. Maximal degree in co-relation 9466. Up to 1225 conditions per place. [2024-06-28 00:05:31,739 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 288 selfloop transitions, 43 changer transitions 0/333 dead transitions. [2024-06-28 00:05:31,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 333 transitions, 4244 flow [2024-06-28 00:05:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:31,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 00:05:31,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 00:05:31,740 INFO L175 Difference]: Start difference. First operand has 341 places, 321 transitions, 3544 flow. Second operand 11 states and 112 transitions. [2024-06-28 00:05:31,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 333 transitions, 4244 flow [2024-06-28 00:05:32,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 333 transitions, 4144 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:32,291 INFO L231 Difference]: Finished difference. Result has 343 places, 322 transitions, 3548 flow [2024-06-28 00:05:32,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3548, PETRI_PLACES=343, PETRI_TRANSITIONS=322} [2024-06-28 00:05:32,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-28 00:05:32,291 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 322 transitions, 3548 flow [2024-06-28 00:05:32,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:32,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:32,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:32,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:05:32,292 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:32,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:32,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1753428023, now seen corresponding path program 10 times [2024-06-28 00:05:32,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:32,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956205510] [2024-06-28 00:05:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:32,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:34,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:34,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956205510] [2024-06-28 00:05:34,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956205510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:34,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:34,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:34,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376845626] [2024-06-28 00:05:34,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:34,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:34,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:34,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:34,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:34,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:34,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 322 transitions, 3548 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:34,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:34,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:34,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:34,694 INFO L124 PetriNetUnfolderBase]: 762/1362 cut-off events. [2024-06-28 00:05:34,694 INFO L125 PetriNetUnfolderBase]: For 167033/167033 co-relation queries the response was YES. [2024-06-28 00:05:34,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10065 conditions, 1362 events. 762/1362 cut-off events. For 167033/167033 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7452 event pairs, 156 based on Foata normal form. 2/1362 useless extension candidates. Maximal degree in co-relation 9909. Up to 1120 conditions per place. [2024-06-28 00:05:34,708 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 80 changer transitions 0/342 dead transitions. [2024-06-28 00:05:34,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 342 transitions, 4597 flow [2024-06-28 00:05:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:05:34,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:05:34,710 INFO L175 Difference]: Start difference. First operand has 343 places, 322 transitions, 3548 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:05:34,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 342 transitions, 4597 flow [2024-06-28 00:05:35,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 342 transitions, 4505 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:35,234 INFO L231 Difference]: Finished difference. Result has 345 places, 326 transitions, 3709 flow [2024-06-28 00:05:35,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3709, PETRI_PLACES=345, PETRI_TRANSITIONS=326} [2024-06-28 00:05:35,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-28 00:05:35,235 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 326 transitions, 3709 flow [2024-06-28 00:05:35,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:35,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:35,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:35,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:05:35,235 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:35,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1753421513, now seen corresponding path program 11 times [2024-06-28 00:05:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:35,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584478459] [2024-06-28 00:05:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:35,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:37,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:37,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584478459] [2024-06-28 00:05:37,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584478459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:37,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:37,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:37,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803904076] [2024-06-28 00:05:37,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:37,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:37,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:37,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:37,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 326 transitions, 3709 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:37,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:37,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:37,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:38,090 INFO L124 PetriNetUnfolderBase]: 758/1356 cut-off events. [2024-06-28 00:05:38,091 INFO L125 PetriNetUnfolderBase]: For 158241/158241 co-relation queries the response was YES. [2024-06-28 00:05:38,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9911 conditions, 1356 events. 758/1356 cut-off events. For 158241/158241 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7438 event pairs, 155 based on Foata normal form. 2/1356 useless extension candidates. Maximal degree in co-relation 9754. Up to 1126 conditions per place. [2024-06-28 00:05:38,106 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 77 changer transitions 0/340 dead transitions. [2024-06-28 00:05:38,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 340 transitions, 4444 flow [2024-06-28 00:05:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:05:38,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 00:05:38,107 INFO L175 Difference]: Start difference. First operand has 345 places, 326 transitions, 3709 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:05:38,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 340 transitions, 4444 flow [2024-06-28 00:05:38,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 340 transitions, 4286 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:38,943 INFO L231 Difference]: Finished difference. Result has 349 places, 326 transitions, 3711 flow [2024-06-28 00:05:38,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3551, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3711, PETRI_PLACES=349, PETRI_TRANSITIONS=326} [2024-06-28 00:05:38,944 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-28 00:05:38,944 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 326 transitions, 3711 flow [2024-06-28 00:05:38,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:38,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:38,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:38,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 00:05:38,944 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:38,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1747172099, now seen corresponding path program 18 times [2024-06-28 00:05:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:38,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591439808] [2024-06-28 00:05:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:40,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:40,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591439808] [2024-06-28 00:05:40,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591439808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:40,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:40,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299188399] [2024-06-28 00:05:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:40,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:40,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:40,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:40,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:40,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:40,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 326 transitions, 3711 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:40,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:40,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:40,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:41,480 INFO L124 PetriNetUnfolderBase]: 762/1364 cut-off events. [2024-06-28 00:05:41,480 INFO L125 PetriNetUnfolderBase]: For 160757/160757 co-relation queries the response was YES. [2024-06-28 00:05:41,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10006 conditions, 1364 events. 762/1364 cut-off events. For 160757/160757 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7493 event pairs, 155 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 9847. Up to 1253 conditions per place. [2024-06-28 00:05:41,493 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 292 selfloop transitions, 44 changer transitions 0/338 dead transitions. [2024-06-28 00:05:41,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 338 transitions, 4423 flow [2024-06-28 00:05:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 00:05:41,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 00:05:41,494 INFO L175 Difference]: Start difference. First operand has 349 places, 326 transitions, 3711 flow. Second operand 11 states and 111 transitions. [2024-06-28 00:05:41,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 338 transitions, 4423 flow [2024-06-28 00:05:41,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 338 transitions, 4264 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:41,976 INFO L231 Difference]: Finished difference. Result has 350 places, 327 transitions, 3660 flow [2024-06-28 00:05:41,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3552, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3660, PETRI_PLACES=350, PETRI_TRANSITIONS=327} [2024-06-28 00:05:41,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 00:05:41,977 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 327 transitions, 3660 flow [2024-06-28 00:05:41,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:41,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:41,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:41,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 00:05:41,978 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:41,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash -643493197, now seen corresponding path program 12 times [2024-06-28 00:05:41,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:41,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164639205] [2024-06-28 00:05:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:41,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:44,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:44,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164639205] [2024-06-28 00:05:44,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164639205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:44,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:44,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:44,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894199568] [2024-06-28 00:05:44,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:44,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:44,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:44,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:44,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 327 transitions, 3660 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:44,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:44,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:44,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:44,884 INFO L124 PetriNetUnfolderBase]: 778/1390 cut-off events. [2024-06-28 00:05:44,884 INFO L125 PetriNetUnfolderBase]: For 176232/176232 co-relation queries the response was YES. [2024-06-28 00:05:44,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10416 conditions, 1390 events. 778/1390 cut-off events. For 176232/176232 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7638 event pairs, 155 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 10256. Up to 1144 conditions per place. [2024-06-28 00:05:44,900 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 263 selfloop transitions, 81 changer transitions 0/346 dead transitions. [2024-06-28 00:05:44,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 346 transitions, 4722 flow [2024-06-28 00:05:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 00:05:44,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 00:05:44,901 INFO L175 Difference]: Start difference. First operand has 350 places, 327 transitions, 3660 flow. Second operand 11 states and 123 transitions. [2024-06-28 00:05:44,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 346 transitions, 4722 flow [2024-06-28 00:05:45,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 346 transitions, 4626 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:45,445 INFO L231 Difference]: Finished difference. Result has 352 places, 331 transitions, 3827 flow [2024-06-28 00:05:45,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3564, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3827, PETRI_PLACES=352, PETRI_TRANSITIONS=331} [2024-06-28 00:05:45,445 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-28 00:05:45,445 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 331 transitions, 3827 flow [2024-06-28 00:05:45,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:45,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:45,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:45,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 00:05:45,446 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:45,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash -643256047, now seen corresponding path program 13 times [2024-06-28 00:05:45,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:45,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213211870] [2024-06-28 00:05:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:45,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:47,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:47,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213211870] [2024-06-28 00:05:47,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213211870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:47,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:47,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:47,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460617310] [2024-06-28 00:05:47,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:47,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:47,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:47,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:47,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:47,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:47,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 331 transitions, 3827 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:47,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:47,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:47,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:48,319 INFO L124 PetriNetUnfolderBase]: 784/1400 cut-off events. [2024-06-28 00:05:48,320 INFO L125 PetriNetUnfolderBase]: For 179757/179757 co-relation queries the response was YES. [2024-06-28 00:05:48,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10619 conditions, 1400 events. 784/1400 cut-off events. For 179757/179757 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7706 event pairs, 155 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 10458. Up to 1170 conditions per place. [2024-06-28 00:05:48,337 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 80 changer transitions 0/346 dead transitions. [2024-06-28 00:05:48,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 346 transitions, 4615 flow [2024-06-28 00:05:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:05:48,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 00:05:48,337 INFO L175 Difference]: Start difference. First operand has 352 places, 331 transitions, 3827 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:05:48,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 346 transitions, 4615 flow [2024-06-28 00:05:48,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 346 transitions, 4467 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:48,994 INFO L231 Difference]: Finished difference. Result has 355 places, 333 transitions, 3899 flow [2024-06-28 00:05:48,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3687, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3899, PETRI_PLACES=355, PETRI_TRANSITIONS=333} [2024-06-28 00:05:48,995 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 00:05:48,995 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 333 transitions, 3899 flow [2024-06-28 00:05:48,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:48,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:48,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:48,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 00:05:48,996 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:48,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:48,996 INFO L85 PathProgramCache]: Analyzing trace with hash -643486687, now seen corresponding path program 14 times [2024-06-28 00:05:48,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:48,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389596318] [2024-06-28 00:05:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:48,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:50,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:50,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389596318] [2024-06-28 00:05:50,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389596318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:50,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:50,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:50,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270282308] [2024-06-28 00:05:50,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:50,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:50,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:50,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:50,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:51,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:51,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 333 transitions, 3899 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:51,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:51,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:51,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:51,740 INFO L124 PetriNetUnfolderBase]: 780/1394 cut-off events. [2024-06-28 00:05:51,740 INFO L125 PetriNetUnfolderBase]: For 169474/169474 co-relation queries the response was YES. [2024-06-28 00:05:51,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10430 conditions, 1394 events. 780/1394 cut-off events. For 169474/169474 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7684 event pairs, 154 based on Foata normal form. 2/1394 useless extension candidates. Maximal degree in co-relation 10267. Up to 1164 conditions per place. [2024-06-28 00:05:51,757 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 267 selfloop transitions, 78 changer transitions 0/347 dead transitions. [2024-06-28 00:05:51,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 347 transitions, 4648 flow [2024-06-28 00:05:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:05:51,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:05:51,758 INFO L175 Difference]: Start difference. First operand has 355 places, 333 transitions, 3899 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:05:51,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 347 transitions, 4648 flow [2024-06-28 00:05:52,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 347 transitions, 4434 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:52,406 INFO L231 Difference]: Finished difference. Result has 358 places, 333 transitions, 3847 flow [2024-06-28 00:05:52,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3847, PETRI_PLACES=358, PETRI_TRANSITIONS=333} [2024-06-28 00:05:52,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 00:05:52,406 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 333 transitions, 3847 flow [2024-06-28 00:05:52,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:52,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:52,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:52,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 00:05:52,407 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:52,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1746925835, now seen corresponding path program 1 times [2024-06-28 00:05:52,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:52,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894439856] [2024-06-28 00:05:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:52,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:54,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:54,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894439856] [2024-06-28 00:05:54,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894439856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:54,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:54,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:54,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770212923] [2024-06-28 00:05:54,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:54,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:54,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:54,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:54,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:54,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:54,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 333 transitions, 3847 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:54,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:54,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:54,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:55,471 INFO L124 PetriNetUnfolderBase]: 788/1410 cut-off events. [2024-06-28 00:05:55,471 INFO L125 PetriNetUnfolderBase]: For 185249/185249 co-relation queries the response was YES. [2024-06-28 00:05:55,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 1410 events. 788/1410 cut-off events. For 185249/185249 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7797 event pairs, 154 based on Foata normal form. 4/1412 useless extension candidates. Maximal degree in co-relation 10271. Up to 1176 conditions per place. [2024-06-28 00:05:55,489 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 270 selfloop transitions, 75 changer transitions 0/347 dead transitions. [2024-06-28 00:05:55,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 347 transitions, 4592 flow [2024-06-28 00:05:55,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:55,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:05:55,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:05:55,490 INFO L175 Difference]: Start difference. First operand has 358 places, 333 transitions, 3847 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:05:55,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 347 transitions, 4592 flow [2024-06-28 00:05:55,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 347 transitions, 4423 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:55,964 INFO L231 Difference]: Finished difference. Result has 359 places, 335 transitions, 3857 flow [2024-06-28 00:05:55,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3857, PETRI_PLACES=359, PETRI_TRANSITIONS=335} [2024-06-28 00:05:55,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-28 00:05:55,965 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 335 transitions, 3857 flow [2024-06-28 00:05:55,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:55,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:55,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:55,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 00:05:55,966 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:55,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1422368915, now seen corresponding path program 2 times [2024-06-28 00:05:55,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:55,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99197023] [2024-06-28 00:05:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:55,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:57,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:57,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99197023] [2024-06-28 00:05:57,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99197023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:57,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:57,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:57,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236786206] [2024-06-28 00:05:57,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:57,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:57,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:57,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:57,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:57,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:57,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 335 transitions, 3857 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:57,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:57,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:57,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:58,313 INFO L124 PetriNetUnfolderBase]: 792/1418 cut-off events. [2024-06-28 00:05:58,313 INFO L125 PetriNetUnfolderBase]: For 175285/175285 co-relation queries the response was YES. [2024-06-28 00:05:58,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10500 conditions, 1418 events. 792/1418 cut-off events. For 175285/175285 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 7865 event pairs, 151 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 10335. Up to 1375 conditions per place. [2024-06-28 00:05:58,333 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 323 selfloop transitions, 21 changer transitions 0/346 dead transitions. [2024-06-28 00:05:58,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 346 transitions, 4581 flow [2024-06-28 00:05:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 00:05:58,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-28 00:05:58,334 INFO L175 Difference]: Start difference. First operand has 359 places, 335 transitions, 3857 flow. Second operand 11 states and 103 transitions. [2024-06-28 00:05:58,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 346 transitions, 4581 flow [2024-06-28 00:05:58,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 346 transitions, 4418 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:58,878 INFO L231 Difference]: Finished difference. Result has 361 places, 336 transitions, 3757 flow [2024-06-28 00:05:58,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3694, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3757, PETRI_PLACES=361, PETRI_TRANSITIONS=336} [2024-06-28 00:05:58,878 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-28 00:05:58,878 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 336 transitions, 3757 flow [2024-06-28 00:05:58,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:58,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:58,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:58,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 00:05:58,879 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:58,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:58,879 INFO L85 PathProgramCache]: Analyzing trace with hash -377829297, now seen corresponding path program 3 times [2024-06-28 00:05:58,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492231437] [2024-06-28 00:05:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:01,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:01,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492231437] [2024-06-28 00:06:01,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492231437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:01,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:01,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350662625] [2024-06-28 00:06:01,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:01,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:01,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:01,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:01,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:01,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:01,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 336 transitions, 3757 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:01,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:01,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:01,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:02,406 INFO L124 PetriNetUnfolderBase]: 796/1426 cut-off events. [2024-06-28 00:06:02,406 INFO L125 PetriNetUnfolderBase]: For 177982/177982 co-relation queries the response was YES. [2024-06-28 00:06:02,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10428 conditions, 1426 events. 796/1426 cut-off events. For 177982/177982 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 7918 event pairs, 149 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 10262. Up to 1349 conditions per place. [2024-06-28 00:06:02,472 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 314 selfloop transitions, 33 changer transitions 0/349 dead transitions. [2024-06-28 00:06:02,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 349 transitions, 4507 flow [2024-06-28 00:06:02,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 00:06:02,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 00:06:02,474 INFO L175 Difference]: Start difference. First operand has 361 places, 336 transitions, 3757 flow. Second operand 11 states and 110 transitions. [2024-06-28 00:06:02,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 349 transitions, 4507 flow [2024-06-28 00:06:03,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 349 transitions, 4456 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:03,007 INFO L231 Difference]: Finished difference. Result has 363 places, 337 transitions, 3794 flow [2024-06-28 00:06:03,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3794, PETRI_PLACES=363, PETRI_TRANSITIONS=337} [2024-06-28 00:06:03,007 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-28 00:06:03,007 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 337 transitions, 3794 flow [2024-06-28 00:06:03,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:03,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:03,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:03,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 00:06:03,008 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:03,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:03,008 INFO L85 PathProgramCache]: Analyzing trace with hash 138982995, now seen corresponding path program 4 times [2024-06-28 00:06:03,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:03,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122837218] [2024-06-28 00:06:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:03,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:04,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:04,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122837218] [2024-06-28 00:06:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122837218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:04,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:04,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764629075] [2024-06-28 00:06:04,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:04,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:04,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:04,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:04,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 337 transitions, 3794 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:04,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:04,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:04,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:05,396 INFO L124 PetriNetUnfolderBase]: 800/1434 cut-off events. [2024-06-28 00:06:05,396 INFO L125 PetriNetUnfolderBase]: For 181354/181354 co-relation queries the response was YES. [2024-06-28 00:06:05,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10521 conditions, 1434 events. 800/1434 cut-off events. For 181354/181354 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7973 event pairs, 152 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 10354. Up to 1394 conditions per place. [2024-06-28 00:06:05,414 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 330 selfloop transitions, 17 changer transitions 0/349 dead transitions. [2024-06-28 00:06:05,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 349 transitions, 4530 flow [2024-06-28 00:06:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-28 00:06:05,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-28 00:06:05,415 INFO L175 Difference]: Start difference. First operand has 363 places, 337 transitions, 3794 flow. Second operand 11 states and 101 transitions. [2024-06-28 00:06:05,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 349 transitions, 4530 flow [2024-06-28 00:06:05,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 349 transitions, 4452 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:05,974 INFO L231 Difference]: Finished difference. Result has 365 places, 338 transitions, 3774 flow [2024-06-28 00:06:05,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3716, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3774, PETRI_PLACES=365, PETRI_TRANSITIONS=338} [2024-06-28 00:06:05,975 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-28 00:06:05,975 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 338 transitions, 3774 flow [2024-06-28 00:06:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:05,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:05,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:05,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 00:06:05,975 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:05,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash -156592395, now seen corresponding path program 5 times [2024-06-28 00:06:05,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:05,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053481514] [2024-06-28 00:06:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:05,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:08,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:08,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053481514] [2024-06-28 00:06:08,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053481514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:08,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:08,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:08,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881082178] [2024-06-28 00:06:08,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:08,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:08,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:08,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:08,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:08,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:08,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 338 transitions, 3774 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:08,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:08,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:08,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:09,057 INFO L124 PetriNetUnfolderBase]: 804/1442 cut-off events. [2024-06-28 00:06:09,057 INFO L125 PetriNetUnfolderBase]: For 184528/184528 co-relation queries the response was YES. [2024-06-28 00:06:09,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10546 conditions, 1442 events. 804/1442 cut-off events. For 184528/184528 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8037 event pairs, 152 based on Foata normal form. 2/1442 useless extension candidates. Maximal degree in co-relation 10378. Up to 1392 conditions per place. [2024-06-28 00:06:09,070 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 324 selfloop transitions, 24 changer transitions 0/350 dead transitions. [2024-06-28 00:06:09,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 350 transitions, 4521 flow [2024-06-28 00:06:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 00:06:09,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-28 00:06:09,071 INFO L175 Difference]: Start difference. First operand has 365 places, 338 transitions, 3774 flow. Second operand 10 states and 101 transitions. [2024-06-28 00:06:09,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 350 transitions, 4521 flow [2024-06-28 00:06:09,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 350 transitions, 4473 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:09,613 INFO L231 Difference]: Finished difference. Result has 366 places, 339 transitions, 3800 flow [2024-06-28 00:06:09,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3726, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3800, PETRI_PLACES=366, PETRI_TRANSITIONS=339} [2024-06-28 00:06:09,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 00:06:09,614 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 339 transitions, 3800 flow [2024-06-28 00:06:09,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:09,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:09,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:09,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 00:06:09,614 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:09,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:09,615 INFO L85 PathProgramCache]: Analyzing trace with hash 481586819, now seen corresponding path program 15 times [2024-06-28 00:06:09,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:09,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929679036] [2024-06-28 00:06:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:09,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:11,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:11,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929679036] [2024-06-28 00:06:11,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929679036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:11,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:11,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:11,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538860298] [2024-06-28 00:06:11,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:11,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:11,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:11,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:11,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:11,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:11,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 339 transitions, 3800 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:11,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:11,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:11,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:12,186 INFO L124 PetriNetUnfolderBase]: 810/1452 cut-off events. [2024-06-28 00:06:12,186 INFO L125 PetriNetUnfolderBase]: For 187950/187950 co-relation queries the response was YES. [2024-06-28 00:06:12,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10663 conditions, 1452 events. 810/1452 cut-off events. For 187950/187950 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8106 event pairs, 154 based on Foata normal form. 2/1452 useless extension candidates. Maximal degree in co-relation 10494. Up to 1337 conditions per place. [2024-06-28 00:06:12,201 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 308 selfloop transitions, 45 changer transitions 0/355 dead transitions. [2024-06-28 00:06:12,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 355 transitions, 4620 flow [2024-06-28 00:06:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 00:06:12,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 00:06:12,202 INFO L175 Difference]: Start difference. First operand has 366 places, 339 transitions, 3800 flow. Second operand 11 states and 116 transitions. [2024-06-28 00:06:12,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 355 transitions, 4620 flow [2024-06-28 00:06:12,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 355 transitions, 4556 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:12,751 INFO L231 Difference]: Finished difference. Result has 369 places, 341 transitions, 3886 flow [2024-06-28 00:06:12,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3736, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3886, PETRI_PLACES=369, PETRI_TRANSITIONS=341} [2024-06-28 00:06:12,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-28 00:06:12,752 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 341 transitions, 3886 flow [2024-06-28 00:06:12,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:12,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:12,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:12,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 00:06:12,752 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:12,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1598923557, now seen corresponding path program 16 times [2024-06-28 00:06:12,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:12,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906484981] [2024-06-28 00:06:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:12,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:14,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:14,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906484981] [2024-06-28 00:06:14,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906484981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:14,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:14,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:14,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418316497] [2024-06-28 00:06:14,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:14,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:14,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:14,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:14,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:14,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 341 transitions, 3886 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:14,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:14,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:14,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:15,431 INFO L124 PetriNetUnfolderBase]: 819/1467 cut-off events. [2024-06-28 00:06:15,432 INFO L125 PetriNetUnfolderBase]: For 198710/198710 co-relation queries the response was YES. [2024-06-28 00:06:15,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10843 conditions, 1467 events. 819/1467 cut-off events. For 198710/198710 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8199 event pairs, 156 based on Foata normal form. 3/1468 useless extension candidates. Maximal degree in co-relation 10673. Up to 1410 conditions per place. [2024-06-28 00:06:15,449 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 325 selfloop transitions, 28 changer transitions 0/355 dead transitions. [2024-06-28 00:06:15,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 355 transitions, 4708 flow [2024-06-28 00:06:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 00:06:15,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 00:06:15,450 INFO L175 Difference]: Start difference. First operand has 369 places, 341 transitions, 3886 flow. Second operand 11 states and 106 transitions. [2024-06-28 00:06:15,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 355 transitions, 4708 flow [2024-06-28 00:06:16,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 355 transitions, 4580 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:16,140 INFO L231 Difference]: Finished difference. Result has 371 places, 345 transitions, 3919 flow [2024-06-28 00:06:16,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3758, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3919, PETRI_PLACES=371, PETRI_TRANSITIONS=345} [2024-06-28 00:06:16,141 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-28 00:06:16,141 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 345 transitions, 3919 flow [2024-06-28 00:06:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:16,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:16,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:16,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 00:06:16,141 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:16,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:16,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2065905677, now seen corresponding path program 17 times [2024-06-28 00:06:16,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:16,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143938994] [2024-06-28 00:06:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:16,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:17,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:17,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143938994] [2024-06-28 00:06:17,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143938994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:17,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:17,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:17,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601461424] [2024-06-28 00:06:17,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:17,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:17,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:17,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 345 transitions, 3919 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:17,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:17,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:17,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:18,577 INFO L124 PetriNetUnfolderBase]: 835/1493 cut-off events. [2024-06-28 00:06:18,577 INFO L125 PetriNetUnfolderBase]: For 209611/209611 co-relation queries the response was YES. [2024-06-28 00:06:18,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11314 conditions, 1493 events. 835/1493 cut-off events. For 209611/209611 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8376 event pairs, 154 based on Foata normal form. 2/1493 useless extension candidates. Maximal degree in co-relation 11143. Up to 1358 conditions per place. [2024-06-28 00:06:18,595 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 312 selfloop transitions, 50 changer transitions 0/364 dead transitions. [2024-06-28 00:06:18,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 364 transitions, 5066 flow [2024-06-28 00:06:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:06:18,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:06:18,596 INFO L175 Difference]: Start difference. First operand has 371 places, 345 transitions, 3919 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:06:18,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 364 transitions, 5066 flow [2024-06-28 00:06:19,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 364 transitions, 4953 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:19,229 INFO L231 Difference]: Finished difference. Result has 373 places, 349 transitions, 4031 flow [2024-06-28 00:06:19,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3806, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4031, PETRI_PLACES=373, PETRI_TRANSITIONS=349} [2024-06-28 00:06:19,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-28 00:06:19,230 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 349 transitions, 4031 flow [2024-06-28 00:06:19,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:19,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:19,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:19,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 00:06:19,230 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:19,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1590879987, now seen corresponding path program 18 times [2024-06-28 00:06:19,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:19,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716026458] [2024-06-28 00:06:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:19,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:21,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716026458] [2024-06-28 00:06:21,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716026458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:21,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:21,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:21,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368025046] [2024-06-28 00:06:21,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:21,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:21,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:21,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:21,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:21,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 349 transitions, 4031 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:21,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:21,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:21,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:21,957 INFO L124 PetriNetUnfolderBase]: 841/1503 cut-off events. [2024-06-28 00:06:21,957 INFO L125 PetriNetUnfolderBase]: For 213154/213154 co-relation queries the response was YES. [2024-06-28 00:06:21,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11453 conditions, 1503 events. 841/1503 cut-off events. For 213154/213154 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8436 event pairs, 153 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 11281. Up to 1431 conditions per place. [2024-06-28 00:06:21,975 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 329 selfloop transitions, 32 changer transitions 0/363 dead transitions. [2024-06-28 00:06:21,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 363 transitions, 4861 flow [2024-06-28 00:06:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:21,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 00:06:21,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 00:06:21,976 INFO L175 Difference]: Start difference. First operand has 373 places, 349 transitions, 4031 flow. Second operand 11 states and 111 transitions. [2024-06-28 00:06:21,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 363 transitions, 4861 flow [2024-06-28 00:06:22,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 363 transitions, 4746 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:22,690 INFO L231 Difference]: Finished difference. Result has 377 places, 351 transitions, 4052 flow [2024-06-28 00:06:22,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3916, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4052, PETRI_PLACES=377, PETRI_TRANSITIONS=351} [2024-06-28 00:06:22,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-28 00:06:22,690 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 351 transitions, 4052 flow [2024-06-28 00:06:22,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:22,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:22,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:22,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 00:06:22,691 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:22,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1590642837, now seen corresponding path program 19 times [2024-06-28 00:06:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:22,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887290624] [2024-06-28 00:06:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:24,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:24,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887290624] [2024-06-28 00:06:24,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887290624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:24,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:24,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:24,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394152170] [2024-06-28 00:06:24,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:24,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:24,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:24,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:24,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:24,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:24,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 351 transitions, 4052 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:24,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:24,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:24,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:25,313 INFO L124 PetriNetUnfolderBase]: 847/1513 cut-off events. [2024-06-28 00:06:25,313 INFO L125 PetriNetUnfolderBase]: For 216326/216326 co-relation queries the response was YES. [2024-06-28 00:06:25,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11577 conditions, 1513 events. 847/1513 cut-off events. For 216326/216326 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8513 event pairs, 152 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 11403. Up to 1402 conditions per place. [2024-06-28 00:06:25,341 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 320 selfloop transitions, 45 changer transitions 0/367 dead transitions. [2024-06-28 00:06:25,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 367 transitions, 5150 flow [2024-06-28 00:06:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 00:06:25,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 00:06:25,342 INFO L175 Difference]: Start difference. First operand has 377 places, 351 transitions, 4052 flow. Second operand 11 states and 112 transitions. [2024-06-28 00:06:25,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 367 transitions, 5150 flow [2024-06-28 00:06:26,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 367 transitions, 5018 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:26,426 INFO L231 Difference]: Finished difference. Result has 380 places, 353 transitions, 4103 flow [2024-06-28 00:06:26,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3920, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4103, PETRI_PLACES=380, PETRI_TRANSITIONS=353} [2024-06-28 00:06:26,427 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-28 00:06:26,427 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 353 transitions, 4103 flow [2024-06-28 00:06:26,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:26,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:26,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:26,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 00:06:26,427 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:26,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:26,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2065905863, now seen corresponding path program 19 times [2024-06-28 00:06:26,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:26,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548063896] [2024-06-28 00:06:26,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:26,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:28,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:28,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548063896] [2024-06-28 00:06:28,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548063896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:28,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:28,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:28,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897382230] [2024-06-28 00:06:28,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:28,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:28,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:28,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:28,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:28,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 353 transitions, 4103 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:28,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:28,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:28,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:29,720 INFO L124 PetriNetUnfolderBase]: 851/1521 cut-off events. [2024-06-28 00:06:29,720 INFO L125 PetriNetUnfolderBase]: For 219564/219564 co-relation queries the response was YES. [2024-06-28 00:06:29,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11624 conditions, 1521 events. 851/1521 cut-off events. For 219564/219564 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8584 event pairs, 154 based on Foata normal form. 2/1521 useless extension candidates. Maximal degree in co-relation 11448. Up to 1471 conditions per place. [2024-06-28 00:06:29,747 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 337 selfloop transitions, 25 changer transitions 0/364 dead transitions. [2024-06-28 00:06:29,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 364 transitions, 4865 flow [2024-06-28 00:06:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:29,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 00:06:29,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 00:06:29,748 INFO L175 Difference]: Start difference. First operand has 380 places, 353 transitions, 4103 flow. Second operand 11 states and 106 transitions. [2024-06-28 00:06:29,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 364 transitions, 4865 flow [2024-06-28 00:06:30,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 364 transitions, 4776 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:30,792 INFO L231 Difference]: Finished difference. Result has 383 places, 354 transitions, 4086 flow [2024-06-28 00:06:30,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4014, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4086, PETRI_PLACES=383, PETRI_TRANSITIONS=354} [2024-06-28 00:06:30,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-06-28 00:06:30,793 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 354 transitions, 4086 flow [2024-06-28 00:06:30,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:30,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:30,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:30,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 00:06:30,794 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:30,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash -2065659599, now seen corresponding path program 6 times [2024-06-28 00:06:30,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:30,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607049306] [2024-06-28 00:06:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:30,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:32,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:32,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607049306] [2024-06-28 00:06:32,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607049306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:32,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:32,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:32,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649077222] [2024-06-28 00:06:32,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:32,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:32,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:32,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:33,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:33,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 354 transitions, 4086 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:33,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:33,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:33,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:33,499 INFO L124 PetriNetUnfolderBase]: 855/1529 cut-off events. [2024-06-28 00:06:33,499 INFO L125 PetriNetUnfolderBase]: For 223149/223149 co-relation queries the response was YES. [2024-06-28 00:06:33,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11643 conditions, 1529 events. 855/1529 cut-off events. For 223149/223149 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8638 event pairs, 151 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 11466. Up to 1470 conditions per place. [2024-06-28 00:06:33,518 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 338 selfloop transitions, 27 changer transitions 0/367 dead transitions. [2024-06-28 00:06:33,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 367 transitions, 4878 flow [2024-06-28 00:06:33,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:33,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 00:06:33,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 00:06:33,519 INFO L175 Difference]: Start difference. First operand has 383 places, 354 transitions, 4086 flow. Second operand 10 states and 103 transitions. [2024-06-28 00:06:33,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 367 transitions, 4878 flow [2024-06-28 00:06:34,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 367 transitions, 4818 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:34,311 INFO L231 Difference]: Finished difference. Result has 384 places, 355 transitions, 4108 flow [2024-06-28 00:06:34,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4108, PETRI_PLACES=384, PETRI_TRANSITIONS=355} [2024-06-28 00:06:34,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-28 00:06:34,311 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 355 transitions, 4108 flow [2024-06-28 00:06:34,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:34,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:34,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:34,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 00:06:34,312 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:34,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:34,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1560723893, now seen corresponding path program 20 times [2024-06-28 00:06:34,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:34,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559571256] [2024-06-28 00:06:34,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:34,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:36,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559571256] [2024-06-28 00:06:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559571256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:36,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:36,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:36,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934318420] [2024-06-28 00:06:36,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:36,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:36,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:36,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:36,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 355 transitions, 4108 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:36,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:36,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:36,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:37,268 INFO L124 PetriNetUnfolderBase]: 859/1537 cut-off events. [2024-06-28 00:06:37,269 INFO L125 PetriNetUnfolderBase]: For 226661/226661 co-relation queries the response was YES. [2024-06-28 00:06:37,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11714 conditions, 1537 events. 859/1537 cut-off events. For 226661/226661 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8678 event pairs, 156 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 11536. Up to 1502 conditions per place. [2024-06-28 00:06:37,295 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 346 selfloop transitions, 18 changer transitions 0/366 dead transitions. [2024-06-28 00:06:37,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 366 transitions, 4876 flow [2024-06-28 00:06:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:37,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:37,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-28 00:06:37,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-28 00:06:37,297 INFO L175 Difference]: Start difference. First operand has 384 places, 355 transitions, 4108 flow. Second operand 11 states and 102 transitions. [2024-06-28 00:06:37,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 366 transitions, 4876 flow [2024-06-28 00:06:38,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 366 transitions, 4804 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:38,410 INFO L231 Difference]: Finished difference. Result has 387 places, 356 transitions, 4096 flow [2024-06-28 00:06:38,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4036, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4096, PETRI_PLACES=387, PETRI_TRANSITIONS=356} [2024-06-28 00:06:38,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:06:38,410 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 356 transitions, 4096 flow [2024-06-28 00:06:38,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:38,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:38,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:38,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 00:06:38,411 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:38,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1430940353, now seen corresponding path program 20 times [2024-06-28 00:06:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441887368] [2024-06-28 00:06:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:40,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:40,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441887368] [2024-06-28 00:06:40,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441887368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:40,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:40,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:40,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915275146] [2024-06-28 00:06:40,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:40,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:40,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:40,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:40,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:40,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:40,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 356 transitions, 4096 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:40,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:40,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:40,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:41,027 INFO L124 PetriNetUnfolderBase]: 855/1531 cut-off events. [2024-06-28 00:06:41,027 INFO L125 PetriNetUnfolderBase]: For 214023/214023 co-relation queries the response was YES. [2024-06-28 00:06:41,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11381 conditions, 1531 events. 855/1531 cut-off events. For 214023/214023 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8686 event pairs, 156 based on Foata normal form. 2/1531 useless extension candidates. Maximal degree in co-relation 11202. Up to 1473 conditions per place. [2024-06-28 00:06:41,045 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 335 selfloop transitions, 30 changer transitions 0/367 dead transitions. [2024-06-28 00:06:41,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 367 transitions, 4863 flow [2024-06-28 00:06:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:41,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 00:06:41,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 00:06:41,045 INFO L175 Difference]: Start difference. First operand has 387 places, 356 transitions, 4096 flow. Second operand 11 states and 110 transitions. [2024-06-28 00:06:41,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 367 transitions, 4863 flow [2024-06-28 00:06:41,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 367 transitions, 4783 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:41,742 INFO L231 Difference]: Finished difference. Result has 389 places, 356 transitions, 4082 flow [2024-06-28 00:06:41,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4082, PETRI_PLACES=389, PETRI_TRANSITIONS=356} [2024-06-28 00:06:41,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 00:06:41,742 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 356 transitions, 4082 flow [2024-06-28 00:06:41,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:41,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:41,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:41,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 00:06:41,742 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:41,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:41,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2065668527, now seen corresponding path program 21 times [2024-06-28 00:06:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:41,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708225357] [2024-06-28 00:06:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:41,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:43,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:43,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708225357] [2024-06-28 00:06:43,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708225357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:43,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:43,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:43,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855954582] [2024-06-28 00:06:43,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:43,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:43,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:43,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:43,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 356 transitions, 4082 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:43,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:43,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:43,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:44,575 INFO L124 PetriNetUnfolderBase]: 851/1525 cut-off events. [2024-06-28 00:06:44,575 INFO L125 PetriNetUnfolderBase]: For 200389/200389 co-relation queries the response was YES. [2024-06-28 00:06:44,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11056 conditions, 1525 events. 851/1525 cut-off events. For 200389/200389 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8627 event pairs, 155 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 10876. Up to 1410 conditions per place. [2024-06-28 00:06:44,589 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 321 selfloop transitions, 46 changer transitions 0/369 dead transitions. [2024-06-28 00:06:44,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 369 transitions, 4871 flow [2024-06-28 00:06:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 00:06:44,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 00:06:44,590 INFO L175 Difference]: Start difference. First operand has 389 places, 356 transitions, 4082 flow. Second operand 11 states and 114 transitions. [2024-06-28 00:06:44,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 369 transitions, 4871 flow [2024-06-28 00:06:45,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 369 transitions, 4751 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:45,338 INFO L231 Difference]: Finished difference. Result has 390 places, 356 transitions, 4060 flow [2024-06-28 00:06:45,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3962, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4060, PETRI_PLACES=390, PETRI_TRANSITIONS=356} [2024-06-28 00:06:45,338 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-28 00:06:45,338 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 356 transitions, 4060 flow [2024-06-28 00:06:45,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:45,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:45,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:45,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 00:06:45,339 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:45,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2072155277, now seen corresponding path program 22 times [2024-06-28 00:06:45,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:45,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036530888] [2024-06-28 00:06:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:45,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:47,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:47,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036530888] [2024-06-28 00:06:47,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036530888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:47,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:47,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:47,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519927480] [2024-06-28 00:06:47,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:47,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:47,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:47,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:47,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:47,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:47,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 356 transitions, 4060 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:47,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:47,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:47,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:47,975 INFO L124 PetriNetUnfolderBase]: 857/1535 cut-off events. [2024-06-28 00:06:47,976 INFO L125 PetriNetUnfolderBase]: For 204641/204641 co-relation queries the response was YES. [2024-06-28 00:06:47,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11163 conditions, 1535 events. 857/1535 cut-off events. For 204641/204641 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8714 event pairs, 154 based on Foata normal form. 2/1535 useless extension candidates. Maximal degree in co-relation 10982. Up to 1420 conditions per place. [2024-06-28 00:06:47,997 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 320 selfloop transitions, 49 changer transitions 0/371 dead transitions. [2024-06-28 00:06:47,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 371 transitions, 4923 flow [2024-06-28 00:06:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 00:06:47,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 00:06:47,998 INFO L175 Difference]: Start difference. First operand has 390 places, 356 transitions, 4060 flow. Second operand 11 states and 113 transitions. [2024-06-28 00:06:47,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 371 transitions, 4923 flow [2024-06-28 00:06:48,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 371 transitions, 4818 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:48,740 INFO L231 Difference]: Finished difference. Result has 391 places, 358 transitions, 4133 flow [2024-06-28 00:06:48,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3955, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4133, PETRI_PLACES=391, PETRI_TRANSITIONS=358} [2024-06-28 00:06:48,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 00:06:48,740 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 358 transitions, 4133 flow [2024-06-28 00:06:48,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:48,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:48,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:48,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 00:06:48,741 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:48,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2072161973, now seen corresponding path program 21 times [2024-06-28 00:06:48,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:48,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753028496] [2024-06-28 00:06:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:48,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:50,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:50,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753028496] [2024-06-28 00:06:50,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753028496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:50,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:50,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:50,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959231825] [2024-06-28 00:06:50,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:50,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:50,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:50,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:50,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:50,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 358 transitions, 4133 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:50,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:50,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:50,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:51,418 INFO L124 PetriNetUnfolderBase]: 854/1530 cut-off events. [2024-06-28 00:06:51,418 INFO L125 PetriNetUnfolderBase]: For 190705/190705 co-relation queries the response was YES. [2024-06-28 00:06:51,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10905 conditions, 1530 events. 854/1530 cut-off events. For 190705/190705 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8689 event pairs, 156 based on Foata normal form. 2/1530 useless extension candidates. Maximal degree in co-relation 10723. Up to 1480 conditions per place. [2024-06-28 00:06:51,446 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 340 selfloop transitions, 26 changer transitions 0/368 dead transitions. [2024-06-28 00:06:51,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 368 transitions, 4887 flow [2024-06-28 00:06:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-28 00:06:51,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-28 00:06:51,448 INFO L175 Difference]: Start difference. First operand has 391 places, 358 transitions, 4133 flow. Second operand 11 states and 105 transitions. [2024-06-28 00:06:51,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 368 transitions, 4887 flow [2024-06-28 00:06:52,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 368 transitions, 4727 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:52,500 INFO L231 Difference]: Finished difference. Result has 393 places, 358 transitions, 4029 flow [2024-06-28 00:06:52,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3973, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4029, PETRI_PLACES=393, PETRI_TRANSITIONS=358} [2024-06-28 00:06:52,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-28 00:06:52,501 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 358 transitions, 4029 flow [2024-06-28 00:06:52,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:52,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:52,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:52,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 00:06:52,501 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:52,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:52,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2072161787, now seen corresponding path program 23 times [2024-06-28 00:06:52,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:52,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213188675] [2024-06-28 00:06:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:52,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:54,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:54,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213188675] [2024-06-28 00:06:54,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213188675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:54,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:54,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:54,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999142230] [2024-06-28 00:06:54,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:54,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:54,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:54,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:54,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:54,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 358 transitions, 4029 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:54,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:54,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:54,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:55,104 INFO L124 PetriNetUnfolderBase]: 850/1524 cut-off events. [2024-06-28 00:06:55,104 INFO L125 PetriNetUnfolderBase]: For 175650/175650 co-relation queries the response was YES. [2024-06-28 00:06:55,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10452 conditions, 1524 events. 850/1524 cut-off events. For 175650/175650 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8660 event pairs, 152 based on Foata normal form. 2/1524 useless extension candidates. Maximal degree in co-relation 10269. Up to 1400 conditions per place. [2024-06-28 00:06:55,123 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 318 selfloop transitions, 52 changer transitions 0/372 dead transitions. [2024-06-28 00:06:55,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 372 transitions, 4832 flow [2024-06-28 00:06:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:55,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 00:06:55,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 00:06:55,124 INFO L175 Difference]: Start difference. First operand has 393 places, 358 transitions, 4029 flow. Second operand 11 states and 116 transitions. [2024-06-28 00:06:55,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 372 transitions, 4832 flow [2024-06-28 00:06:55,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 372 transitions, 4768 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:55,775 INFO L231 Difference]: Finished difference. Result has 395 places, 358 transitions, 4074 flow [2024-06-28 00:06:55,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3965, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4074, PETRI_PLACES=395, PETRI_TRANSITIONS=358} [2024-06-28 00:06:55,775 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-28 00:06:55,775 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 358 transitions, 4074 flow [2024-06-28 00:06:55,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:55,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:55,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:55,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 00:06:55,776 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:55,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash 240499217, now seen corresponding path program 22 times [2024-06-28 00:06:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:55,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715872159] [2024-06-28 00:06:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:55,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:57,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:57,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715872159] [2024-06-28 00:06:57,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715872159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:57,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:57,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:57,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631833584] [2024-06-28 00:06:57,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:57,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:57,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:57,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:57,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:57,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:57,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 358 transitions, 4074 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:57,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:57,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:57,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:57,949 INFO L124 PetriNetUnfolderBase]: 854/1532 cut-off events. [2024-06-28 00:06:57,949 INFO L125 PetriNetUnfolderBase]: For 178218/178218 co-relation queries the response was YES. [2024-06-28 00:06:57,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10543 conditions, 1532 events. 854/1532 cut-off events. For 178218/178218 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 8717 event pairs, 68 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 10359. Up to 811 conditions per place. [2024-06-28 00:06:57,970 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 243 selfloop transitions, 132 changer transitions 0/377 dead transitions. [2024-06-28 00:06:57,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 377 transitions, 5140 flow [2024-06-28 00:06:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:06:57,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 00:06:57,971 INFO L175 Difference]: Start difference. First operand has 395 places, 358 transitions, 4074 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:06:57,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 377 transitions, 5140 flow [2024-06-28 00:06:58,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 377 transitions, 4710 flow, removed 32 selfloop flow, removed 14 redundant places. [2024-06-28 00:06:58,612 INFO L231 Difference]: Finished difference. Result has 391 places, 359 transitions, 3924 flow [2024-06-28 00:06:58,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3924, PETRI_PLACES=391, PETRI_TRANSITIONS=359} [2024-06-28 00:06:58,612 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 00:06:58,612 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 359 transitions, 3924 flow [2024-06-28 00:06:58,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:58,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:58,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:58,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 00:06:58,612 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:58,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:58,613 INFO L85 PathProgramCache]: Analyzing trace with hash 298591667, now seen corresponding path program 23 times [2024-06-28 00:06:58,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:58,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698146503] [2024-06-28 00:06:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:58,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:00,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:00,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698146503] [2024-06-28 00:07:00,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698146503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:00,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:00,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:00,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698470698] [2024-06-28 00:07:00,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:00,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:00,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:00,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:00,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:00,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:00,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 359 transitions, 3924 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:00,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:00,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:00,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:00,781 INFO L124 PetriNetUnfolderBase]: 865/1553 cut-off events. [2024-06-28 00:07:00,781 INFO L125 PetriNetUnfolderBase]: For 197654/197654 co-relation queries the response was YES. [2024-06-28 00:07:00,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10649 conditions, 1553 events. 865/1553 cut-off events. For 197654/197654 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 8869 event pairs, 85 based on Foata normal form. 2/1553 useless extension candidates. Maximal degree in co-relation 10468. Up to 1165 conditions per place. [2024-06-28 00:07:00,797 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 261 selfloop transitions, 115 changer transitions 0/378 dead transitions. [2024-06-28 00:07:00,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 378 transitions, 5006 flow [2024-06-28 00:07:00,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 00:07:00,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 00:07:00,798 INFO L175 Difference]: Start difference. First operand has 391 places, 359 transitions, 3924 flow. Second operand 10 states and 126 transitions. [2024-06-28 00:07:00,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 378 transitions, 5006 flow [2024-06-28 00:07:01,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 378 transitions, 4779 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:01,606 INFO L231 Difference]: Finished difference. Result has 393 places, 361 transitions, 3961 flow [2024-06-28 00:07:01,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3709, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3961, PETRI_PLACES=393, PETRI_TRANSITIONS=361} [2024-06-28 00:07:01,606 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-28 00:07:01,606 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 361 transitions, 3961 flow [2024-06-28 00:07:01,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:01,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:01,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:01,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 00:07:01,607 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:01,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 298706987, now seen corresponding path program 24 times [2024-06-28 00:07:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:01,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767176850] [2024-06-28 00:07:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:01,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:03,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:03,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767176850] [2024-06-28 00:07:03,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767176850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:03,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:03,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834477471] [2024-06-28 00:07:03,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:03,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:03,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:03,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:03,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 361 transitions, 3961 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:03,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:03,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:03,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:03,809 INFO L124 PetriNetUnfolderBase]: 869/1561 cut-off events. [2024-06-28 00:07:03,809 INFO L125 PetriNetUnfolderBase]: For 197995/197995 co-relation queries the response was YES. [2024-06-28 00:07:03,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10656 conditions, 1561 events. 869/1561 cut-off events. For 197995/197995 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 8936 event pairs, 89 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 10475. Up to 1215 conditions per place. [2024-06-28 00:07:03,829 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 261 selfloop transitions, 115 changer transitions 0/378 dead transitions. [2024-06-28 00:07:03,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 378 transitions, 5026 flow [2024-06-28 00:07:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 00:07:03,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:07:03,830 INFO L175 Difference]: Start difference. First operand has 393 places, 361 transitions, 3961 flow. Second operand 10 states and 124 transitions. [2024-06-28 00:07:03,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 378 transitions, 5026 flow [2024-06-28 00:07:04,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 378 transitions, 4833 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:04,629 INFO L231 Difference]: Finished difference. Result has 395 places, 362 transitions, 4015 flow [2024-06-28 00:07:04,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3770, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4015, PETRI_PLACES=395, PETRI_TRANSITIONS=362} [2024-06-28 00:07:04,629 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-28 00:07:04,629 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 362 transitions, 4015 flow [2024-06-28 00:07:04,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:04,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:04,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:04,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 00:07:04,630 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:04,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash 298711637, now seen corresponding path program 25 times [2024-06-28 00:07:04,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:04,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166587929] [2024-06-28 00:07:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:06,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:06,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166587929] [2024-06-28 00:07:06,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166587929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:06,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:06,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772558394] [2024-06-28 00:07:06,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:06,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:06,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:06,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:06,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:06,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:06,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 362 transitions, 4015 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:06,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:06,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:06,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:06,895 INFO L124 PetriNetUnfolderBase]: 866/1556 cut-off events. [2024-06-28 00:07:06,895 INFO L125 PetriNetUnfolderBase]: For 180433/180433 co-relation queries the response was YES. [2024-06-28 00:07:06,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10466 conditions, 1556 events. 866/1556 cut-off events. For 180433/180433 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 8923 event pairs, 92 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 10285. Up to 1243 conditions per place. [2024-06-28 00:07:06,913 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 260 selfloop transitions, 114 changer transitions 0/376 dead transitions. [2024-06-28 00:07:06,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 376 transitions, 4797 flow [2024-06-28 00:07:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:07:06,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 00:07:06,914 INFO L175 Difference]: Start difference. First operand has 395 places, 362 transitions, 4015 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:07:06,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 376 transitions, 4797 flow [2024-06-28 00:07:07,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 376 transitions, 4558 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:07,615 INFO L231 Difference]: Finished difference. Result has 396 places, 362 transitions, 4010 flow [2024-06-28 00:07:07,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3776, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4010, PETRI_PLACES=396, PETRI_TRANSITIONS=362} [2024-06-28 00:07:07,615 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 00:07:07,616 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 362 transitions, 4010 flow [2024-06-28 00:07:07,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:07,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:07,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:07,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 00:07:07,616 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:07,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:07,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1419631883, now seen corresponding path program 24 times [2024-06-28 00:07:07,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:07,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440912350] [2024-06-28 00:07:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:07,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:09,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:09,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440912350] [2024-06-28 00:07:09,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440912350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:09,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:09,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:09,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104895856] [2024-06-28 00:07:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:09,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:09,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 362 transitions, 4010 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:09,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:09,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:09,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:10,123 INFO L124 PetriNetUnfolderBase]: 872/1566 cut-off events. [2024-06-28 00:07:10,123 INFO L125 PetriNetUnfolderBase]: For 180118/180118 co-relation queries the response was YES. [2024-06-28 00:07:10,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10498 conditions, 1566 events. 872/1566 cut-off events. For 180118/180118 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8983 event pairs, 105 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 10317. Up to 895 conditions per place. [2024-06-28 00:07:10,144 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 193 selfloop transitions, 187 changer transitions 0/382 dead transitions. [2024-06-28 00:07:10,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 382 transitions, 5118 flow [2024-06-28 00:07:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:07:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:07:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-28 00:07:10,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44086021505376344 [2024-06-28 00:07:10,145 INFO L175 Difference]: Start difference. First operand has 396 places, 362 transitions, 4010 flow. Second operand 9 states and 123 transitions. [2024-06-28 00:07:10,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 382 transitions, 5118 flow [2024-06-28 00:07:10,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 382 transitions, 4879 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:10,819 INFO L231 Difference]: Finished difference. Result has 395 places, 366 transitions, 4191 flow [2024-06-28 00:07:10,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3773, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4191, PETRI_PLACES=395, PETRI_TRANSITIONS=366} [2024-06-28 00:07:10,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-28 00:07:10,820 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 366 transitions, 4191 flow [2024-06-28 00:07:10,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:10,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:10,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:10,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 00:07:10,821 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:10,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash 364232219, now seen corresponding path program 25 times [2024-06-28 00:07:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:10,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301777557] [2024-06-28 00:07:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:10,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:13,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:13,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301777557] [2024-06-28 00:07:13,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301777557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:13,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:13,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:13,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473262228] [2024-06-28 00:07:13,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:13,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:13,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:13,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:13,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:13,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:13,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 366 transitions, 4191 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:13,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:13,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:13,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:14,304 INFO L124 PetriNetUnfolderBase]: 878/1576 cut-off events. [2024-06-28 00:07:14,304 INFO L125 PetriNetUnfolderBase]: For 180467/180467 co-relation queries the response was YES. [2024-06-28 00:07:14,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10758 conditions, 1576 events. 878/1576 cut-off events. For 180467/180467 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9066 event pairs, 96 based on Foata normal form. 2/1576 useless extension candidates. Maximal degree in co-relation 10578. Up to 1245 conditions per place. [2024-06-28 00:07:14,325 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 267 selfloop transitions, 113 changer transitions 0/382 dead transitions. [2024-06-28 00:07:14,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 382 transitions, 5019 flow [2024-06-28 00:07:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 00:07:14,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:07:14,326 INFO L175 Difference]: Start difference. First operand has 395 places, 366 transitions, 4191 flow. Second operand 10 states and 125 transitions. [2024-06-28 00:07:14,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 382 transitions, 5019 flow [2024-06-28 00:07:15,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 382 transitions, 4876 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:07:15,052 INFO L231 Difference]: Finished difference. Result has 399 places, 368 transitions, 4308 flow [2024-06-28 00:07:15,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4308, PETRI_PLACES=399, PETRI_TRANSITIONS=368} [2024-06-28 00:07:15,052 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-28 00:07:15,053 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 368 transitions, 4308 flow [2024-06-28 00:07:15,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:15,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:15,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:15,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 00:07:15,053 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:15,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:15,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1304167733, now seen corresponding path program 26 times [2024-06-28 00:07:15,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:15,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452978102] [2024-06-28 00:07:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:15,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:16,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:16,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452978102] [2024-06-28 00:07:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452978102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:16,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:16,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:16,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837201582] [2024-06-28 00:07:16,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:16,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:16,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:16,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:16,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:07:16,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 368 transitions, 4308 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:16,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:16,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:07:16,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:17,929 INFO L124 PetriNetUnfolderBase]: 884/1586 cut-off events. [2024-06-28 00:07:17,929 INFO L125 PetriNetUnfolderBase]: For 180904/180904 co-relation queries the response was YES. [2024-06-28 00:07:17,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11013 conditions, 1586 events. 884/1586 cut-off events. For 180904/180904 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9123 event pairs, 88 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 10831. Up to 1237 conditions per place. [2024-06-28 00:07:17,950 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 262 selfloop transitions, 127 changer transitions 0/391 dead transitions. [2024-06-28 00:07:17,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 391 transitions, 5205 flow [2024-06-28 00:07:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 00:07:17,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 00:07:17,952 INFO L175 Difference]: Start difference. First operand has 399 places, 368 transitions, 4308 flow. Second operand 12 states and 134 transitions. [2024-06-28 00:07:17,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 391 transitions, 5205 flow [2024-06-28 00:07:18,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 391 transitions, 4973 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:18,590 INFO L231 Difference]: Finished difference. Result has 402 places, 373 transitions, 4387 flow [2024-06-28 00:07:18,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4078, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4387, PETRI_PLACES=402, PETRI_TRANSITIONS=373} [2024-06-28 00:07:18,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-06-28 00:07:18,590 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 373 transitions, 4387 flow [2024-06-28 00:07:18,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:18,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:18,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:18,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 00:07:18,591 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:18,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:18,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1304167919, now seen corresponding path program 26 times [2024-06-28 00:07:18,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:18,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627306623] [2024-06-28 00:07:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:18,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:20,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627306623] [2024-06-28 00:07:20,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627306623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:20,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:20,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232412092] [2024-06-28 00:07:20,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:20,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:20,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:20,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:07:20,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 373 transitions, 4387 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:20,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:20,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:07:20,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:21,368 INFO L124 PetriNetUnfolderBase]: 888/1594 cut-off events. [2024-06-28 00:07:21,368 INFO L125 PetriNetUnfolderBase]: For 180700/180700 co-relation queries the response was YES. [2024-06-28 00:07:21,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11110 conditions, 1594 events. 888/1594 cut-off events. For 180700/180700 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9184 event pairs, 88 based on Foata normal form. 2/1594 useless extension candidates. Maximal degree in co-relation 10928. Up to 1419 conditions per place. [2024-06-28 00:07:21,389 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 317 selfloop transitions, 67 changer transitions 0/386 dead transitions. [2024-06-28 00:07:21,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 386 transitions, 5192 flow [2024-06-28 00:07:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 00:07:21,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 00:07:21,390 INFO L175 Difference]: Start difference. First operand has 402 places, 373 transitions, 4387 flow. Second operand 10 states and 108 transitions. [2024-06-28 00:07:21,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 386 transitions, 5192 flow [2024-06-28 00:07:22,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 386 transitions, 4980 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:22,008 INFO L231 Difference]: Finished difference. Result has 404 places, 374 transitions, 4326 flow [2024-06-28 00:07:22,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4175, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4326, PETRI_PLACES=404, PETRI_TRANSITIONS=374} [2024-06-28 00:07:22,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-28 00:07:22,008 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 374 transitions, 4326 flow [2024-06-28 00:07:22,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:22,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:22,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:22,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 00:07:22,008 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:22,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1304345549, now seen corresponding path program 27 times [2024-06-28 00:07:22,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:22,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713746617] [2024-06-28 00:07:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:23,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:23,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713746617] [2024-06-28 00:07:23,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713746617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:23,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:23,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:23,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215769010] [2024-06-28 00:07:23,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:23,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:23,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:23,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:23,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:23,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:23,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 374 transitions, 4326 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:23,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:23,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:23,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:24,105 INFO L124 PetriNetUnfolderBase]: 899/1615 cut-off events. [2024-06-28 00:07:24,105 INFO L125 PetriNetUnfolderBase]: For 198441/198441 co-relation queries the response was YES. [2024-06-28 00:07:24,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11261 conditions, 1615 events. 899/1615 cut-off events. For 198441/198441 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9327 event pairs, 83 based on Foata normal form. 2/1615 useless extension candidates. Maximal degree in co-relation 11080. Up to 1367 conditions per place. [2024-06-28 00:07:24,127 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 308 selfloop transitions, 79 changer transitions 0/389 dead transitions. [2024-06-28 00:07:24,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 389 transitions, 5418 flow [2024-06-28 00:07:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:07:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:07:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 00:07:24,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 00:07:24,128 INFO L175 Difference]: Start difference. First operand has 404 places, 374 transitions, 4326 flow. Second operand 9 states and 114 transitions. [2024-06-28 00:07:24,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 389 transitions, 5418 flow [2024-06-28 00:07:24,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 389 transitions, 5276 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:24,852 INFO L231 Difference]: Finished difference. Result has 404 places, 376 transitions, 4374 flow [2024-06-28 00:07:24,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4186, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4374, PETRI_PLACES=404, PETRI_TRANSITIONS=376} [2024-06-28 00:07:24,853 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-28 00:07:24,853 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 376 transitions, 4374 flow [2024-06-28 00:07:24,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:24,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:24,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:24,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 00:07:24,853 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:24,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1304340899, now seen corresponding path program 28 times [2024-06-28 00:07:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:24,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133110852] [2024-06-28 00:07:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:24,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:26,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133110852] [2024-06-28 00:07:26,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133110852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:26,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:26,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:26,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571593463] [2024-06-28 00:07:26,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:26,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:26,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:26,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:26,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:26,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:26,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 376 transitions, 4374 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:26,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:26,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:26,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:27,230 INFO L124 PetriNetUnfolderBase]: 896/1610 cut-off events. [2024-06-28 00:07:27,230 INFO L125 PetriNetUnfolderBase]: For 180930/180930 co-relation queries the response was YES. [2024-06-28 00:07:27,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10958 conditions, 1610 events. 896/1610 cut-off events. For 180930/180930 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9326 event pairs, 90 based on Foata normal form. 2/1610 useless extension candidates. Maximal degree in co-relation 10777. Up to 1417 conditions per place. [2024-06-28 00:07:27,250 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 311 selfloop transitions, 75 changer transitions 0/388 dead transitions. [2024-06-28 00:07:27,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 388 transitions, 5174 flow [2024-06-28 00:07:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 00:07:27,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:07:27,252 INFO L175 Difference]: Start difference. First operand has 404 places, 376 transitions, 4374 flow. Second operand 10 states and 120 transitions. [2024-06-28 00:07:27,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 388 transitions, 5174 flow [2024-06-28 00:07:27,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 388 transitions, 5068 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:07:27,923 INFO L231 Difference]: Finished difference. Result has 408 places, 376 transitions, 4424 flow [2024-06-28 00:07:27,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4268, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4424, PETRI_PLACES=408, PETRI_TRANSITIONS=376} [2024-06-28 00:07:27,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-28 00:07:27,923 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 376 transitions, 4424 flow [2024-06-28 00:07:27,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:27,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:27,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:27,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 00:07:27,924 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:27,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:27,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1304340713, now seen corresponding path program 27 times [2024-06-28 00:07:27,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:27,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854940933] [2024-06-28 00:07:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:27,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:29,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:29,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854940933] [2024-06-28 00:07:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854940933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:29,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:29,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:29,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347842893] [2024-06-28 00:07:29,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:29,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:29,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:29,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:29,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:29,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:29,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 376 transitions, 4424 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:29,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:29,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:29,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:30,498 INFO L124 PetriNetUnfolderBase]: 902/1620 cut-off events. [2024-06-28 00:07:30,498 INFO L125 PetriNetUnfolderBase]: For 180928/180928 co-relation queries the response was YES. [2024-06-28 00:07:30,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11126 conditions, 1620 events. 902/1620 cut-off events. For 180928/180928 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 9377 event pairs, 100 based on Foata normal form. 2/1620 useless extension candidates. Maximal degree in co-relation 10944. Up to 1241 conditions per place. [2024-06-28 00:07:30,514 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 128 changer transitions 0/390 dead transitions. [2024-06-28 00:07:30,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 390 transitions, 5262 flow [2024-06-28 00:07:30,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:07:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:07:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 00:07:30,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:07:30,515 INFO L175 Difference]: Start difference. First operand has 408 places, 376 transitions, 4424 flow. Second operand 9 states and 120 transitions. [2024-06-28 00:07:30,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 390 transitions, 5262 flow [2024-06-28 00:07:31,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 390 transitions, 5096 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:31,155 INFO L231 Difference]: Finished difference. Result has 407 places, 378 transitions, 4552 flow [2024-06-28 00:07:31,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4258, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4552, PETRI_PLACES=407, PETRI_TRANSITIONS=378} [2024-06-28 00:07:31,155 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-28 00:07:31,155 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 378 transitions, 4552 flow [2024-06-28 00:07:31,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:31,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:31,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:31,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 00:07:31,156 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:31,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1308929519, now seen corresponding path program 29 times [2024-06-28 00:07:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:31,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034851900] [2024-06-28 00:07:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:31,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:32,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:32,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034851900] [2024-06-28 00:07:32,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034851900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:32,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:32,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:32,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883741819] [2024-06-28 00:07:32,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:32,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:32,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:32,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:32,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:32,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 378 transitions, 4552 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:32,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:32,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:32,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:33,379 INFO L124 PetriNetUnfolderBase]: 913/1641 cut-off events. [2024-06-28 00:07:33,379 INFO L125 PetriNetUnfolderBase]: For 199021/199021 co-relation queries the response was YES. [2024-06-28 00:07:33,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11595 conditions, 1641 events. 913/1641 cut-off events. For 199021/199021 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9517 event pairs, 85 based on Foata normal form. 2/1641 useless extension candidates. Maximal degree in co-relation 11413. Up to 1313 conditions per place. [2024-06-28 00:07:33,402 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 305 selfloop transitions, 88 changer transitions 0/395 dead transitions. [2024-06-28 00:07:33,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 395 transitions, 5664 flow [2024-06-28 00:07:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 00:07:33,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 00:07:33,403 INFO L175 Difference]: Start difference. First operand has 407 places, 378 transitions, 4552 flow. Second operand 10 states and 123 transitions. [2024-06-28 00:07:33,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 395 transitions, 5664 flow [2024-06-28 00:07:34,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 395 transitions, 5393 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:34,138 INFO L231 Difference]: Finished difference. Result has 409 places, 380 transitions, 4493 flow [2024-06-28 00:07:34,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4283, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4493, PETRI_PLACES=409, PETRI_TRANSITIONS=380} [2024-06-28 00:07:34,138 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-28 00:07:34,138 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 380 transitions, 4493 flow [2024-06-28 00:07:34,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:34,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:34,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:34,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 00:07:34,138 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:34,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1220242361, now seen corresponding path program 30 times [2024-06-28 00:07:34,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:34,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647216043] [2024-06-28 00:07:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:34,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:35,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:35,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647216043] [2024-06-28 00:07:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647216043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:35,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:35,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:35,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382239759] [2024-06-28 00:07:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:35,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:35,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:35,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:35,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:35,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 380 transitions, 4493 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:35,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:35,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:35,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:36,520 INFO L124 PetriNetUnfolderBase]: 917/1649 cut-off events. [2024-06-28 00:07:36,521 INFO L125 PetriNetUnfolderBase]: For 198824/198824 co-relation queries the response was YES. [2024-06-28 00:07:36,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 1649 events. 917/1649 cut-off events. For 198824/198824 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 9575 event pairs, 95 based on Foata normal form. 2/1649 useless extension candidates. Maximal degree in co-relation 11383. Up to 1444 conditions per place. [2024-06-28 00:07:36,540 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 313 selfloop transitions, 78 changer transitions 0/393 dead transitions. [2024-06-28 00:07:36,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 393 transitions, 5318 flow [2024-06-28 00:07:36,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:07:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:07:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 00:07:36,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 00:07:36,541 INFO L175 Difference]: Start difference. First operand has 409 places, 380 transitions, 4493 flow. Second operand 9 states and 114 transitions. [2024-06-28 00:07:36,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 393 transitions, 5318 flow [2024-06-28 00:07:37,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 393 transitions, 5200 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:37,266 INFO L231 Difference]: Finished difference. Result has 411 places, 381 transitions, 4554 flow [2024-06-28 00:07:37,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4554, PETRI_PLACES=411, PETRI_TRANSITIONS=381} [2024-06-28 00:07:37,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 00:07:37,266 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 381 transitions, 4554 flow [2024-06-28 00:07:37,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:37,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:37,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:37,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 00:07:37,266 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:37,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:37,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1220237711, now seen corresponding path program 31 times [2024-06-28 00:07:37,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:37,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079048797] [2024-06-28 00:07:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:37,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:38,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:38,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079048797] [2024-06-28 00:07:38,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079048797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:38,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:38,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:38,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760404890] [2024-06-28 00:07:38,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:38,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:38,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:38,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:38,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:38,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:38,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 381 transitions, 4554 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:38,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:38,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:38,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:39,468 INFO L124 PetriNetUnfolderBase]: 914/1644 cut-off events. [2024-06-28 00:07:39,468 INFO L125 PetriNetUnfolderBase]: For 180997/180997 co-relation queries the response was YES. [2024-06-28 00:07:39,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11376 conditions, 1644 events. 914/1644 cut-off events. For 180997/180997 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 9555 event pairs, 90 based on Foata normal form. 2/1644 useless extension candidates. Maximal degree in co-relation 11194. Up to 1411 conditions per place. [2024-06-28 00:07:39,490 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 311 selfloop transitions, 81 changer transitions 0/394 dead transitions. [2024-06-28 00:07:39,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 394 transitions, 5368 flow [2024-06-28 00:07:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:39,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 00:07:39,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 00:07:39,491 INFO L175 Difference]: Start difference. First operand has 411 places, 381 transitions, 4554 flow. Second operand 10 states and 122 transitions. [2024-06-28 00:07:39,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 394 transitions, 5368 flow [2024-06-28 00:07:40,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 394 transitions, 5204 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:40,133 INFO L231 Difference]: Finished difference. Result has 413 places, 381 transitions, 4558 flow [2024-06-28 00:07:40,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4558, PETRI_PLACES=413, PETRI_TRANSITIONS=381} [2024-06-28 00:07:40,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2024-06-28 00:07:40,134 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 381 transitions, 4558 flow [2024-06-28 00:07:40,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:40,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:40,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:40,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 00:07:40,134 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:40,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:40,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1308809363, now seen corresponding path program 28 times [2024-06-28 00:07:40,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:40,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517736486] [2024-06-28 00:07:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:40,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:42,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:42,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517736486] [2024-06-28 00:07:42,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517736486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:42,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:42,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:42,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706514252] [2024-06-28 00:07:42,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:42,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:42,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:42,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:42,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:42,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:42,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 381 transitions, 4558 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:42,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:42,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:42,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:42,949 INFO L124 PetriNetUnfolderBase]: 920/1654 cut-off events. [2024-06-28 00:07:42,949 INFO L125 PetriNetUnfolderBase]: For 181262/181262 co-relation queries the response was YES. [2024-06-28 00:07:42,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11445 conditions, 1654 events. 920/1654 cut-off events. For 181262/181262 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 9637 event pairs, 104 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 11262. Up to 1251 conditions per place. [2024-06-28 00:07:42,972 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 141 changer transitions 0/399 dead transitions. [2024-06-28 00:07:42,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 399 transitions, 5426 flow [2024-06-28 00:07:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 00:07:42,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:07:42,973 INFO L175 Difference]: Start difference. First operand has 413 places, 381 transitions, 4558 flow. Second operand 12 states and 150 transitions. [2024-06-28 00:07:42,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 399 transitions, 5426 flow [2024-06-28 00:07:43,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 399 transitions, 5188 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:43,692 INFO L231 Difference]: Finished difference. Result has 414 places, 383 transitions, 4644 flow [2024-06-28 00:07:43,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4320, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4644, PETRI_PLACES=414, PETRI_TRANSITIONS=383} [2024-06-28 00:07:43,693 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-06-28 00:07:43,693 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 383 transitions, 4644 flow [2024-06-28 00:07:43,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:43,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:43,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:43,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 00:07:43,693 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:43,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash 963607049, now seen corresponding path program 32 times [2024-06-28 00:07:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:43,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207084414] [2024-06-28 00:07:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:45,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:45,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207084414] [2024-06-28 00:07:45,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207084414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:45,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:45,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749984740] [2024-06-28 00:07:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:45,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:45,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:45,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:45,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:45,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:45,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 383 transitions, 4644 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:45,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:45,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:45,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:46,038 INFO L124 PetriNetUnfolderBase]: 924/1664 cut-off events. [2024-06-28 00:07:46,038 INFO L125 PetriNetUnfolderBase]: For 181243/181243 co-relation queries the response was YES. [2024-06-28 00:07:46,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11487 conditions, 1664 events. 924/1664 cut-off events. For 181243/181243 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 9738 event pairs, 62 based on Foata normal form. 2/1664 useless extension candidates. Maximal degree in co-relation 11306. Up to 1235 conditions per place. [2024-06-28 00:07:46,055 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 117 changer transitions 0/404 dead transitions. [2024-06-28 00:07:46,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 404 transitions, 5787 flow [2024-06-28 00:07:46,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:07:46,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:07:46,056 INFO L175 Difference]: Start difference. First operand has 414 places, 383 transitions, 4644 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:07:46,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 404 transitions, 5787 flow [2024-06-28 00:07:46,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 404 transitions, 5486 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:46,732 INFO L231 Difference]: Finished difference. Result has 413 places, 384 transitions, 4598 flow [2024-06-28 00:07:46,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4345, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4598, PETRI_PLACES=413, PETRI_TRANSITIONS=384} [2024-06-28 00:07:46,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2024-06-28 00:07:46,733 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 384 transitions, 4598 flow [2024-06-28 00:07:46,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:46,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:46,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:46,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 00:07:46,733 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:46,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1994488621, now seen corresponding path program 33 times [2024-06-28 00:07:46,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:46,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751321836] [2024-06-28 00:07:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:46,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:48,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:48,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751321836] [2024-06-28 00:07:48,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751321836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:48,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:48,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:48,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365286136] [2024-06-28 00:07:48,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:48,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:48,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:48,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:48,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:48,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:48,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 384 transitions, 4598 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:48,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:48,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:48,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:48,928 INFO L124 PetriNetUnfolderBase]: 935/1685 cut-off events. [2024-06-28 00:07:48,928 INFO L125 PetriNetUnfolderBase]: For 198972/198972 co-relation queries the response was YES. [2024-06-28 00:07:48,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11807 conditions, 1685 events. 935/1685 cut-off events. For 198972/198972 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9888 event pairs, 59 based on Foata normal form. 2/1685 useless extension candidates. Maximal degree in co-relation 11625. Up to 1328 conditions per place. [2024-06-28 00:07:48,951 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 292 selfloop transitions, 110 changer transitions 0/404 dead transitions. [2024-06-28 00:07:48,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 404 transitions, 5754 flow [2024-06-28 00:07:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:07:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:07:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-28 00:07:48,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-28 00:07:48,952 INFO L175 Difference]: Start difference. First operand has 413 places, 384 transitions, 4598 flow. Second operand 9 states and 121 transitions. [2024-06-28 00:07:48,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 404 transitions, 5754 flow [2024-06-28 00:07:49,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 404 transitions, 5335 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:49,792 INFO L231 Difference]: Finished difference. Result has 411 places, 386 transitions, 4439 flow [2024-06-28 00:07:49,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4193, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4439, PETRI_PLACES=411, PETRI_TRANSITIONS=386} [2024-06-28 00:07:49,792 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 00:07:49,792 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 386 transitions, 4439 flow [2024-06-28 00:07:49,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:49,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:49,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:49,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 00:07:49,793 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:49,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:49,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1823790841, now seen corresponding path program 34 times [2024-06-28 00:07:49,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:49,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565220782] [2024-06-28 00:07:49,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:49,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:51,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565220782] [2024-06-28 00:07:51,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565220782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:51,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:51,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725593606] [2024-06-28 00:07:51,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:51,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:51,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:51,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:51,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:51,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 386 transitions, 4439 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:51,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:51,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:51,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:52,407 INFO L124 PetriNetUnfolderBase]: 939/1693 cut-off events. [2024-06-28 00:07:52,407 INFO L125 PetriNetUnfolderBase]: For 198758/198758 co-relation queries the response was YES. [2024-06-28 00:07:52,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11427 conditions, 1693 events. 939/1693 cut-off events. For 198758/198758 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 9949 event pairs, 103 based on Foata normal form. 2/1693 useless extension candidates. Maximal degree in co-relation 11247. Up to 1440 conditions per place. [2024-06-28 00:07:52,430 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 104 changer transitions 0/404 dead transitions. [2024-06-28 00:07:52,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 404 transitions, 5308 flow [2024-06-28 00:07:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:07:52,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:07:52,431 INFO L175 Difference]: Start difference. First operand has 411 places, 386 transitions, 4439 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:07:52,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 404 transitions, 5308 flow [2024-06-28 00:07:53,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 404 transitions, 5164 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:07:53,190 INFO L231 Difference]: Finished difference. Result has 415 places, 387 transitions, 4522 flow [2024-06-28 00:07:53,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4295, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4522, PETRI_PLACES=415, PETRI_TRANSITIONS=387} [2024-06-28 00:07:53,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-28 00:07:53,190 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 387 transitions, 4522 flow [2024-06-28 00:07:53,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:53,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:53,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:53,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 00:07:53,191 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:53,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:53,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1823791027, now seen corresponding path program 29 times [2024-06-28 00:07:53,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:53,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433116558] [2024-06-28 00:07:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:53,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:54,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:54,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433116558] [2024-06-28 00:07:54,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433116558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:54,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:54,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:54,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340345889] [2024-06-28 00:07:54,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:54,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:54,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:55,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:55,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:55,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:55,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 387 transitions, 4522 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:55,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:55,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:55,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:55,816 INFO L124 PetriNetUnfolderBase]: 945/1703 cut-off events. [2024-06-28 00:07:55,816 INFO L125 PetriNetUnfolderBase]: For 198942/198942 co-relation queries the response was YES. [2024-06-28 00:07:55,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11643 conditions, 1703 events. 945/1703 cut-off events. For 198942/198942 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10011 event pairs, 105 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 11462. Up to 1136 conditions per place. [2024-06-28 00:07:55,835 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 221 selfloop transitions, 186 changer transitions 0/409 dead transitions. [2024-06-28 00:07:55,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 409 transitions, 5712 flow [2024-06-28 00:07:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 00:07:55,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-28 00:07:55,836 INFO L175 Difference]: Start difference. First operand has 415 places, 387 transitions, 4522 flow. Second operand 10 states and 137 transitions. [2024-06-28 00:07:55,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 409 transitions, 5712 flow [2024-06-28 00:07:56,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 409 transitions, 5496 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:56,631 INFO L231 Difference]: Finished difference. Result has 416 places, 389 transitions, 4722 flow [2024-06-28 00:07:56,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4308, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4722, PETRI_PLACES=416, PETRI_TRANSITIONS=389} [2024-06-28 00:07:56,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 386 predicate places. [2024-06-28 00:07:56,632 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 389 transitions, 4722 flow [2024-06-28 00:07:56,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:56,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:56,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:56,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 00:07:56,632 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:56,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1823786191, now seen corresponding path program 35 times [2024-06-28 00:07:56,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:56,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303550175] [2024-06-28 00:07:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:56,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:58,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303550175] [2024-06-28 00:07:58,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303550175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:58,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:58,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:58,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145010018] [2024-06-28 00:07:58,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:58,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:58,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:58,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:58,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:58,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:58,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 389 transitions, 4722 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:58,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:58,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:58,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:58,878 INFO L124 PetriNetUnfolderBase]: 942/1698 cut-off events. [2024-06-28 00:07:58,878 INFO L125 PetriNetUnfolderBase]: For 181738/181738 co-relation queries the response was YES. [2024-06-28 00:07:58,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11566 conditions, 1698 events. 942/1698 cut-off events. For 181738/181738 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 9979 event pairs, 98 based on Foata normal form. 2/1698 useless extension candidates. Maximal degree in co-relation 11385. Up to 1417 conditions per place. [2024-06-28 00:07:58,900 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 299 selfloop transitions, 106 changer transitions 0/407 dead transitions. [2024-06-28 00:07:58,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 407 transitions, 5588 flow [2024-06-28 00:07:58,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 00:07:58,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 00:07:58,901 INFO L175 Difference]: Start difference. First operand has 416 places, 389 transitions, 4722 flow. Second operand 10 states and 129 transitions. [2024-06-28 00:07:58,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 407 transitions, 5588 flow [2024-06-28 00:07:59,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 407 transitions, 5153 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:59,585 INFO L231 Difference]: Finished difference. Result has 417 places, 389 transitions, 4505 flow [2024-06-28 00:07:59,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4287, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4505, PETRI_PLACES=417, PETRI_TRANSITIONS=389} [2024-06-28 00:07:59,585 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-28 00:07:59,585 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 389 transitions, 4505 flow [2024-06-28 00:07:59,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:59,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:59,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:59,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 00:07:59,585 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:59,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:59,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1994493457, now seen corresponding path program 30 times [2024-06-28 00:07:59,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:59,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296325448] [2024-06-28 00:07:59,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:59,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:01,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:01,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296325448] [2024-06-28 00:08:01,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296325448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:01,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:01,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:08:01,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284918604] [2024-06-28 00:08:01,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:01,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:08:01,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:08:01,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:08:01,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:01,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 389 transitions, 4505 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:01,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:01,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:01,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:02,405 INFO L124 PetriNetUnfolderBase]: 948/1708 cut-off events. [2024-06-28 00:08:02,405 INFO L125 PetriNetUnfolderBase]: For 181272/181272 co-relation queries the response was YES. [2024-06-28 00:08:02,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11391 conditions, 1708 events. 948/1708 cut-off events. For 181272/181272 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 10061 event pairs, 104 based on Foata normal form. 2/1708 useless extension candidates. Maximal degree in co-relation 11210. Up to 1161 conditions per place. [2024-06-28 00:08:02,428 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 180 changer transitions 0/410 dead transitions. [2024-06-28 00:08:02,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 410 transitions, 5695 flow [2024-06-28 00:08:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:08:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:08:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:08:02,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-28 00:08:02,429 INFO L175 Difference]: Start difference. First operand has 417 places, 389 transitions, 4505 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:08:02,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 410 transitions, 5695 flow [2024-06-28 00:08:03,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 410 transitions, 5385 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:08:03,178 INFO L231 Difference]: Finished difference. Result has 415 places, 391 transitions, 4599 flow [2024-06-28 00:08:03,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4599, PETRI_PLACES=415, PETRI_TRANSITIONS=391} [2024-06-28 00:08:03,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-28 00:08:03,178 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 391 transitions, 4599 flow [2024-06-28 00:08:03,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:03,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:03,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:03,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 00:08:03,179 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:03,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:03,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1994493271, now seen corresponding path program 36 times [2024-06-28 00:08:03,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:03,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256965557] [2024-06-28 00:08:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:03,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:04,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:04,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256965557] [2024-06-28 00:08:04,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256965557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:04,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:04,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:08:04,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624227986] [2024-06-28 00:08:04,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:04,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:08:04,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:04,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:08:04,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:08:04,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:04,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 391 transitions, 4599 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:04,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:04,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:04,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:05,428 INFO L124 PetriNetUnfolderBase]: 952/1716 cut-off events. [2024-06-28 00:08:05,428 INFO L125 PetriNetUnfolderBase]: For 181505/181505 co-relation queries the response was YES. [2024-06-28 00:08:05,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11416 conditions, 1716 events. 952/1716 cut-off events. For 181505/181505 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10141 event pairs, 102 based on Foata normal form. 2/1716 useless extension candidates. Maximal degree in co-relation 11236. Up to 1475 conditions per place. [2024-06-28 00:08:05,450 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 308 selfloop transitions, 98 changer transitions 0/408 dead transitions. [2024-06-28 00:08:05,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 408 transitions, 5472 flow [2024-06-28 00:08:05,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:08:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:08:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:08:05,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:08:05,451 INFO L175 Difference]: Start difference. First operand has 415 places, 391 transitions, 4599 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:08:05,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 408 transitions, 5472 flow [2024-06-28 00:08:06,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 408 transitions, 5087 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:06,172 INFO L231 Difference]: Finished difference. Result has 416 places, 392 transitions, 4427 flow [2024-06-28 00:08:06,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4214, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4427, PETRI_PLACES=416, PETRI_TRANSITIONS=392} [2024-06-28 00:08:06,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 386 predicate places. [2024-06-28 00:08:06,172 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 392 transitions, 4427 flow [2024-06-28 00:08:06,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:06,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:06,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:06,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 00:08:06,173 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:06,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1828439167, now seen corresponding path program 31 times [2024-06-28 00:08:06,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:06,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125930426] [2024-06-28 00:08:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:06,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:07,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125930426] [2024-06-28 00:08:07,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125930426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:07,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:07,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:07,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934067775] [2024-06-28 00:08:07,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:07,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:07,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:07,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:07,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:08,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:08:08,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 392 transitions, 4427 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:08,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:08,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:08:08,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:08,999 INFO L124 PetriNetUnfolderBase]: 958/1726 cut-off events. [2024-06-28 00:08:09,000 INFO L125 PetriNetUnfolderBase]: For 180762/180762 co-relation queries the response was YES. [2024-06-28 00:08:09,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11257 conditions, 1726 events. 958/1726 cut-off events. For 180762/180762 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10197 event pairs, 119 based on Foata normal form. 2/1726 useless extension candidates. Maximal degree in co-relation 11077. Up to 1393 conditions per place. [2024-06-28 00:08:09,023 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 276 selfloop transitions, 140 changer transitions 0/418 dead transitions. [2024-06-28 00:08:09,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 418 transitions, 5406 flow [2024-06-28 00:08:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:08:09,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:08:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-28 00:08:09,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:08:09,024 INFO L175 Difference]: Start difference. First operand has 416 places, 392 transitions, 4427 flow. Second operand 13 states and 143 transitions. [2024-06-28 00:08:09,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 418 transitions, 5406 flow [2024-06-28 00:08:09,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 418 transitions, 5206 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:09,718 INFO L231 Difference]: Finished difference. Result has 421 places, 400 transitions, 4610 flow [2024-06-28 00:08:09,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4227, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4610, PETRI_PLACES=421, PETRI_TRANSITIONS=400} [2024-06-28 00:08:09,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-06-28 00:08:09,718 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 400 transitions, 4610 flow [2024-06-28 00:08:09,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:09,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:09,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:09,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 00:08:09,719 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:09,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:09,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2000929057, now seen corresponding path program 32 times [2024-06-28 00:08:09,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:09,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883000089] [2024-06-28 00:08:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:09,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:12,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:12,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883000089] [2024-06-28 00:08:12,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883000089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:12,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:12,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:12,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636568398] [2024-06-28 00:08:12,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:12,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:12,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:12,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:12,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:12,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:08:12,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 400 transitions, 4610 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:12,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:12,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:08:12,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:13,107 INFO L124 PetriNetUnfolderBase]: 964/1734 cut-off events. [2024-06-28 00:08:13,107 INFO L125 PetriNetUnfolderBase]: For 181174/181174 co-relation queries the response was YES. [2024-06-28 00:08:13,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11439 conditions, 1734 events. 964/1734 cut-off events. For 181174/181174 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10237 event pairs, 92 based on Foata normal form. 2/1734 useless extension candidates. Maximal degree in co-relation 11259. Up to 1403 conditions per place. [2024-06-28 00:08:13,129 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 301 selfloop transitions, 116 changer transitions 0/419 dead transitions. [2024-06-28 00:08:13,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 419 transitions, 5571 flow [2024-06-28 00:08:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 00:08:13,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 00:08:13,130 INFO L175 Difference]: Start difference. First operand has 421 places, 400 transitions, 4610 flow. Second operand 10 states and 117 transitions. [2024-06-28 00:08:13,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 419 transitions, 5571 flow [2024-06-28 00:08:13,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 419 transitions, 5413 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:13,909 INFO L231 Difference]: Finished difference. Result has 424 places, 402 transitions, 4744 flow [2024-06-28 00:08:13,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4460, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4744, PETRI_PLACES=424, PETRI_TRANSITIONS=402} [2024-06-28 00:08:13,909 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-28 00:08:13,909 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 402 transitions, 4744 flow [2024-06-28 00:08:13,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:13,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:13,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:13,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 00:08:13,909 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:13,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:13,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1994672947, now seen corresponding path program 33 times [2024-06-28 00:08:13,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:13,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285383793] [2024-06-28 00:08:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:13,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:15,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:15,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285383793] [2024-06-28 00:08:15,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285383793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:15,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:15,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:15,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671636205] [2024-06-28 00:08:15,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:15,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:15,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:15,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:08:15,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 402 transitions, 4744 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:15,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:15,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:08:15,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:16,711 INFO L124 PetriNetUnfolderBase]: 970/1744 cut-off events. [2024-06-28 00:08:16,711 INFO L125 PetriNetUnfolderBase]: For 181639/181639 co-relation queries the response was YES. [2024-06-28 00:08:16,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11539 conditions, 1744 events. 970/1744 cut-off events. For 181639/181639 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10300 event pairs, 92 based on Foata normal form. 2/1744 useless extension candidates. Maximal degree in co-relation 11359. Up to 1413 conditions per place. [2024-06-28 00:08:16,733 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 294 selfloop transitions, 128 changer transitions 0/424 dead transitions. [2024-06-28 00:08:16,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 424 transitions, 5709 flow [2024-06-28 00:08:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:08:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:08:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 149 transitions. [2024-06-28 00:08:16,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3433179723502304 [2024-06-28 00:08:16,734 INFO L175 Difference]: Start difference. First operand has 424 places, 402 transitions, 4744 flow. Second operand 14 states and 149 transitions. [2024-06-28 00:08:16,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 424 transitions, 5709 flow [2024-06-28 00:08:17,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 424 transitions, 5449 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:17,479 INFO L231 Difference]: Finished difference. Result has 429 places, 408 transitions, 4837 flow [2024-06-28 00:08:17,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4486, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4837, PETRI_PLACES=429, PETRI_TRANSITIONS=408} [2024-06-28 00:08:17,480 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 399 predicate places. [2024-06-28 00:08:17,480 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 408 transitions, 4837 flow [2024-06-28 00:08:17,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:17,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:17,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:17,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 00:08:17,480 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:17,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:17,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2001168625, now seen corresponding path program 7 times [2024-06-28 00:08:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:17,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171439976] [2024-06-28 00:08:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:17,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:19,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:19,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171439976] [2024-06-28 00:08:19,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171439976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:19,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:19,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:19,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578982167] [2024-06-28 00:08:19,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:19,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:19,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:20,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:08:20,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 408 transitions, 4837 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:20,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:20,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:08:20,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:20,849 INFO L124 PetriNetUnfolderBase]: 971/1747 cut-off events. [2024-06-28 00:08:20,849 INFO L125 PetriNetUnfolderBase]: For 181773/181773 co-relation queries the response was YES. [2024-06-28 00:08:20,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11213 conditions, 1747 events. 971/1747 cut-off events. For 181773/181773 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10357 event pairs, 98 based on Foata normal form. 4/1749 useless extension candidates. Maximal degree in co-relation 11033. Up to 1478 conditions per place. [2024-06-28 00:08:20,871 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 332 selfloop transitions, 91 changer transitions 0/425 dead transitions. [2024-06-28 00:08:20,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 425 transitions, 5729 flow [2024-06-28 00:08:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:08:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:08:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-28 00:08:20,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3598014888337469 [2024-06-28 00:08:20,872 INFO L175 Difference]: Start difference. First operand has 429 places, 408 transitions, 4837 flow. Second operand 13 states and 145 transitions. [2024-06-28 00:08:20,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 425 transitions, 5729 flow [2024-06-28 00:08:21,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 425 transitions, 5581 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 00:08:21,536 INFO L231 Difference]: Finished difference. Result has 436 places, 409 transitions, 4886 flow [2024-06-28 00:08:21,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4689, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4886, PETRI_PLACES=436, PETRI_TRANSITIONS=409} [2024-06-28 00:08:21,537 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-28 00:08:21,537 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 409 transitions, 4886 flow [2024-06-28 00:08:21,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:21,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:21,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:21,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 00:08:21,537 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:21,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:21,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1836848577, now seen corresponding path program 34 times [2024-06-28 00:08:21,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:21,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137243434] [2024-06-28 00:08:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:21,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:23,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:23,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137243434] [2024-06-28 00:08:23,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137243434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:23,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:23,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692787790] [2024-06-28 00:08:23,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:23,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:23,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:23,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:08:23,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 409 transitions, 4886 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:23,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:23,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:08:23,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:25,139 INFO L124 PetriNetUnfolderBase]: 977/1757 cut-off events. [2024-06-28 00:08:25,139 INFO L125 PetriNetUnfolderBase]: For 165117/165117 co-relation queries the response was YES. [2024-06-28 00:08:25,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11284 conditions, 1757 events. 977/1757 cut-off events. For 165117/165117 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10397 event pairs, 92 based on Foata normal form. 2/1757 useless extension candidates. Maximal degree in co-relation 11104. Up to 1362 conditions per place. [2024-06-28 00:08:25,158 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 277 selfloop transitions, 150 changer transitions 0/429 dead transitions. [2024-06-28 00:08:25,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 429 transitions, 5840 flow [2024-06-28 00:08:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:08:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:08:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-28 00:08:25,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:08:25,159 INFO L175 Difference]: Start difference. First operand has 436 places, 409 transitions, 4886 flow. Second operand 13 states and 143 transitions. [2024-06-28 00:08:25,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 429 transitions, 5840 flow [2024-06-28 00:08:25,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 429 transitions, 5578 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-28 00:08:25,866 INFO L231 Difference]: Finished difference. Result has 436 places, 412 transitions, 4996 flow [2024-06-28 00:08:25,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4626, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4996, PETRI_PLACES=436, PETRI_TRANSITIONS=412} [2024-06-28 00:08:25,867 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-28 00:08:25,867 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 412 transitions, 4996 flow [2024-06-28 00:08:25,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:25,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:25,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:25,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 00:08:25,868 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:25,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:25,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1994666437, now seen corresponding path program 35 times [2024-06-28 00:08:25,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:25,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969369497] [2024-06-28 00:08:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:27,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:27,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969369497] [2024-06-28 00:08:27,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969369497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:27,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:27,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:27,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690868234] [2024-06-28 00:08:27,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:27,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:27,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:27,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:27,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:27,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:27,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 412 transitions, 4996 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:27,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:27,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:27,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:28,411 INFO L124 PetriNetUnfolderBase]: 983/1767 cut-off events. [2024-06-28 00:08:28,411 INFO L125 PetriNetUnfolderBase]: For 167477/167477 co-relation queries the response was YES. [2024-06-28 00:08:28,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11404 conditions, 1767 events. 983/1767 cut-off events. For 167477/167477 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 10476 event pairs, 92 based on Foata normal form. 2/1767 useless extension candidates. Maximal degree in co-relation 11226. Up to 1418 conditions per place. [2024-06-28 00:08:28,433 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 305 selfloop transitions, 120 changer transitions 0/427 dead transitions. [2024-06-28 00:08:28,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 427 transitions, 5930 flow [2024-06-28 00:08:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:08:28,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:08:28,434 INFO L175 Difference]: Start difference. First operand has 436 places, 412 transitions, 4996 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:08:28,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 427 transitions, 5930 flow [2024-06-28 00:08:29,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 427 transitions, 5672 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:29,163 INFO L231 Difference]: Finished difference. Result has 438 places, 414 transitions, 5040 flow [2024-06-28 00:08:29,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4738, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5040, PETRI_PLACES=438, PETRI_TRANSITIONS=414} [2024-06-28 00:08:29,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-28 00:08:29,164 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 414 transitions, 5040 flow [2024-06-28 00:08:29,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:29,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:29,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:29,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 00:08:29,164 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:29,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:29,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1994666251, now seen corresponding path program 37 times [2024-06-28 00:08:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:29,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378621049] [2024-06-28 00:08:29,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:29,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:30,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:30,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378621049] [2024-06-28 00:08:30,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378621049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:30,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:30,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:30,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859865176] [2024-06-28 00:08:30,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:30,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:30,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:30,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:30,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:31,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:31,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 414 transitions, 5040 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:31,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:31,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:31,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:31,695 INFO L124 PetriNetUnfolderBase]: 987/1775 cut-off events. [2024-06-28 00:08:31,696 INFO L125 PetriNetUnfolderBase]: For 167607/167607 co-relation queries the response was YES. [2024-06-28 00:08:31,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11372 conditions, 1775 events. 987/1775 cut-off events. For 167607/167607 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 10548 event pairs, 90 based on Foata normal form. 2/1775 useless extension candidates. Maximal degree in co-relation 11193. Up to 1600 conditions per place. [2024-06-28 00:08:31,724 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 360 selfloop transitions, 65 changer transitions 0/427 dead transitions. [2024-06-28 00:08:31,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 427 transitions, 5929 flow [2024-06-28 00:08:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:08:31,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 00:08:31,726 INFO L175 Difference]: Start difference. First operand has 438 places, 414 transitions, 5040 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:08:31,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 427 transitions, 5929 flow [2024-06-28 00:08:32,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 427 transitions, 5652 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:32,469 INFO L231 Difference]: Finished difference. Result has 439 places, 415 transitions, 4912 flow [2024-06-28 00:08:32,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4763, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4912, PETRI_PLACES=439, PETRI_TRANSITIONS=415} [2024-06-28 00:08:32,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 409 predicate places. [2024-06-28 00:08:32,470 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 415 transitions, 4912 flow [2024-06-28 00:08:32,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:32,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:32,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:32,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 00:08:32,470 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:32,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1828432471, now seen corresponding path program 38 times [2024-06-28 00:08:32,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:32,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463953228] [2024-06-28 00:08:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:32,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:34,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:34,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463953228] [2024-06-28 00:08:34,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463953228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:34,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:34,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:34,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232254370] [2024-06-28 00:08:34,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:34,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:34,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:34,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:34,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:34,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:34,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 415 transitions, 4912 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:34,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:34,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:34,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:35,261 INFO L124 PetriNetUnfolderBase]: 991/1785 cut-off events. [2024-06-28 00:08:35,261 INFO L125 PetriNetUnfolderBase]: For 166837/166837 co-relation queries the response was YES. [2024-06-28 00:08:35,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11250 conditions, 1785 events. 991/1785 cut-off events. For 166837/166837 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10640 event pairs, 114 based on Foata normal form. 2/1785 useless extension candidates. Maximal degree in co-relation 11071. Up to 1608 conditions per place. [2024-06-28 00:08:35,283 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 355 selfloop transitions, 74 changer transitions 0/431 dead transitions. [2024-06-28 00:08:35,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 431 transitions, 5832 flow [2024-06-28 00:08:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:08:35,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 00:08:35,284 INFO L175 Difference]: Start difference. First operand has 439 places, 415 transitions, 4912 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:08:35,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 431 transitions, 5832 flow [2024-06-28 00:08:35,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 431 transitions, 5696 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:35,969 INFO L231 Difference]: Finished difference. Result has 440 places, 416 transitions, 4945 flow [2024-06-28 00:08:35,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4776, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4945, PETRI_PLACES=440, PETRI_TRANSITIONS=416} [2024-06-28 00:08:35,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-06-28 00:08:35,969 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 416 transitions, 4945 flow [2024-06-28 00:08:35,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:35,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:35,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:35,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 00:08:35,970 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:35,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:35,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2000922547, now seen corresponding path program 36 times [2024-06-28 00:08:35,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:35,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234249296] [2024-06-28 00:08:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:35,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:37,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:37,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234249296] [2024-06-28 00:08:37,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234249296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:37,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:37,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709406533] [2024-06-28 00:08:37,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:37,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:37,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:37,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:38,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:08:38,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 416 transitions, 4945 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:38,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:38,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:08:38,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:39,177 INFO L124 PetriNetUnfolderBase]: 997/1793 cut-off events. [2024-06-28 00:08:39,177 INFO L125 PetriNetUnfolderBase]: For 167326/167326 co-relation queries the response was YES. [2024-06-28 00:08:39,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11364 conditions, 1793 events. 997/1793 cut-off events. For 167326/167326 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 10707 event pairs, 92 based on Foata normal form. 2/1793 useless extension candidates. Maximal degree in co-relation 11185. Up to 1428 conditions per place. [2024-06-28 00:08:39,204 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 291 selfloop transitions, 141 changer transitions 0/434 dead transitions. [2024-06-28 00:08:39,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 434 transitions, 5903 flow [2024-06-28 00:08:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:08:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:08:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 142 transitions. [2024-06-28 00:08:39,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523573200992556 [2024-06-28 00:08:39,205 INFO L175 Difference]: Start difference. First operand has 440 places, 416 transitions, 4945 flow. Second operand 13 states and 142 transitions. [2024-06-28 00:08:39,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 434 transitions, 5903 flow [2024-06-28 00:08:40,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 434 transitions, 5747 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:40,085 INFO L231 Difference]: Finished difference. Result has 444 places, 418 transitions, 5137 flow [2024-06-28 00:08:40,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4789, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5137, PETRI_PLACES=444, PETRI_TRANSITIONS=418} [2024-06-28 00:08:40,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-28 00:08:40,085 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 418 transitions, 5137 flow [2024-06-28 00:08:40,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:40,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:40,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:40,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 00:08:40,086 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:40,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2000922361, now seen corresponding path program 39 times [2024-06-28 00:08:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:40,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087508735] [2024-06-28 00:08:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:42,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:42,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087508735] [2024-06-28 00:08:42,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087508735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:42,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:42,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046338837] [2024-06-28 00:08:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:42,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:42,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:42,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:43,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:08:43,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 418 transitions, 5137 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:43,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:43,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:08:43,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:44,080 INFO L124 PetriNetUnfolderBase]: 994/1788 cut-off events. [2024-06-28 00:08:44,080 INFO L125 PetriNetUnfolderBase]: For 149825/149825 co-relation queries the response was YES. [2024-06-28 00:08:44,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11241 conditions, 1788 events. 994/1788 cut-off events. For 149825/149825 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 10666 event pairs, 89 based on Foata normal form. 2/1788 useless extension candidates. Maximal degree in co-relation 11062. Up to 1613 conditions per place. [2024-06-28 00:08:44,104 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 361 selfloop transitions, 67 changer transitions 0/430 dead transitions. [2024-06-28 00:08:44,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 430 transitions, 6021 flow [2024-06-28 00:08:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 00:08:44,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 00:08:44,105 INFO L175 Difference]: Start difference. First operand has 444 places, 418 transitions, 5137 flow. Second operand 10 states and 107 transitions. [2024-06-28 00:08:44,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 430 transitions, 6021 flow [2024-06-28 00:08:44,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 430 transitions, 5719 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-28 00:08:44,912 INFO L231 Difference]: Finished difference. Result has 443 places, 418 transitions, 4975 flow [2024-06-28 00:08:44,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4835, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4975, PETRI_PLACES=443, PETRI_TRANSITIONS=418} [2024-06-28 00:08:44,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-28 00:08:44,913 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 418 transitions, 4975 flow [2024-06-28 00:08:44,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:44,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:44,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:44,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 00:08:44,913 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:44,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:44,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1828432657, now seen corresponding path program 37 times [2024-06-28 00:08:44,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:44,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049759675] [2024-06-28 00:08:44,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:44,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:47,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:47,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049759675] [2024-06-28 00:08:47,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049759675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:47,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:47,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926084543] [2024-06-28 00:08:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:47,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:47,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:47,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:47,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 418 transitions, 4975 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:47,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:47,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:47,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:48,017 INFO L124 PetriNetUnfolderBase]: 990/1784 cut-off events. [2024-06-28 00:08:48,017 INFO L125 PetriNetUnfolderBase]: For 131025/131025 co-relation queries the response was YES. [2024-06-28 00:08:48,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10697 conditions, 1784 events. 990/1784 cut-off events. For 131025/131025 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 10671 event pairs, 118 based on Foata normal form. 2/1784 useless extension candidates. Maximal degree in co-relation 10518. Up to 1433 conditions per place. [2024-06-28 00:08:48,040 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 296 selfloop transitions, 136 changer transitions 0/434 dead transitions. [2024-06-28 00:08:48,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 434 transitions, 5894 flow [2024-06-28 00:08:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:48,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 00:08:48,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-28 00:08:48,041 INFO L175 Difference]: Start difference. First operand has 443 places, 418 transitions, 4975 flow. Second operand 10 states and 132 transitions. [2024-06-28 00:08:48,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 434 transitions, 5894 flow [2024-06-28 00:08:48,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 434 transitions, 5591 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 00:08:48,641 INFO L231 Difference]: Finished difference. Result has 442 places, 418 transitions, 4952 flow [2024-06-28 00:08:48,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4672, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4952, PETRI_PLACES=442, PETRI_TRANSITIONS=418} [2024-06-28 00:08:48,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-28 00:08:48,642 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 418 transitions, 4952 flow [2024-06-28 00:08:48,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:48,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:48,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:48,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 00:08:48,642 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:48,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:48,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1700312977, now seen corresponding path program 1 times [2024-06-28 00:08:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:48,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302929915] [2024-06-28 00:08:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:48,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:50,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:50,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302929915] [2024-06-28 00:08:50,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302929915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:50,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:50,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:50,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046842575] [2024-06-28 00:08:50,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:50,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:50,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:08:50,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 418 transitions, 4952 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:50,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:50,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:08:50,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:51,464 INFO L124 PetriNetUnfolderBase]: 1031/1869 cut-off events. [2024-06-28 00:08:51,464 INFO L125 PetriNetUnfolderBase]: For 274549/274549 co-relation queries the response was YES. [2024-06-28 00:08:51,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12212 conditions, 1869 events. 1031/1869 cut-off events. For 274549/274549 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 11185 event pairs, 247 based on Foata normal form. 8/1875 useless extension candidates. Maximal degree in co-relation 12033. Up to 860 conditions per place. [2024-06-28 00:08:51,492 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 297 selfloop transitions, 130 changer transitions 16/445 dead transitions. [2024-06-28 00:08:51,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 445 transitions, 6190 flow [2024-06-28 00:08:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:51,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:51,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:08:51,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:08:51,493 INFO L175 Difference]: Start difference. First operand has 442 places, 418 transitions, 4952 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:08:51,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 445 transitions, 6190 flow [2024-06-28 00:08:52,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 445 transitions, 5702 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-28 00:08:52,405 INFO L231 Difference]: Finished difference. Result has 443 places, 414 transitions, 4695 flow [2024-06-28 00:08:52,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4466, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4695, PETRI_PLACES=443, PETRI_TRANSITIONS=414} [2024-06-28 00:08:52,405 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-28 00:08:52,405 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 414 transitions, 4695 flow [2024-06-28 00:08:52,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:52,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:52,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:52,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 00:08:52,407 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:52,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash 100552973, now seen corresponding path program 2 times [2024-06-28 00:08:52,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:52,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92225076] [2024-06-28 00:08:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:52,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:54,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:54,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92225076] [2024-06-28 00:08:54,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92225076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:54,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:54,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:54,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119117706] [2024-06-28 00:08:54,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:54,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:54,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:54,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:54,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:08:54,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 414 transitions, 4695 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:54,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:54,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:08:54,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:55,218 INFO L124 PetriNetUnfolderBase]: 1044/1900 cut-off events. [2024-06-28 00:08:55,218 INFO L125 PetriNetUnfolderBase]: For 363793/363793 co-relation queries the response was YES. [2024-06-28 00:08:55,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13309 conditions, 1900 events. 1044/1900 cut-off events. For 363793/363793 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11355 event pairs, 256 based on Foata normal form. 8/1906 useless extension candidates. Maximal degree in co-relation 13131. Up to 1299 conditions per place. [2024-06-28 00:08:55,242 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 295 selfloop transitions, 130 changer transitions 13/440 dead transitions. [2024-06-28 00:08:55,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 440 transitions, 5921 flow [2024-06-28 00:08:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 00:08:55,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 00:08:55,243 INFO L175 Difference]: Start difference. First operand has 443 places, 414 transitions, 4695 flow. Second operand 12 states and 140 transitions. [2024-06-28 00:08:55,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 440 transitions, 5921 flow [2024-06-28 00:08:56,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 440 transitions, 5717 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:56,217 INFO L231 Difference]: Finished difference. Result has 441 places, 410 transitions, 4713 flow [2024-06-28 00:08:56,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4493, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4713, PETRI_PLACES=441, PETRI_TRANSITIONS=410} [2024-06-28 00:08:56,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-28 00:08:56,218 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 410 transitions, 4713 flow [2024-06-28 00:08:56,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:56,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:56,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:56,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 00:08:56,218 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:56,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash 104272043, now seen corresponding path program 3 times [2024-06-28 00:08:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:56,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254689760] [2024-06-28 00:08:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:56,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:58,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:58,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254689760] [2024-06-28 00:08:58,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254689760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:58,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:58,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:58,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68977002] [2024-06-28 00:08:58,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:58,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:58,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:58,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:58,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:58,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:08:58,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 410 transitions, 4713 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:58,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:58,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:08:58,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:58,908 INFO L124 PetriNetUnfolderBase]: 1052/1920 cut-off events. [2024-06-28 00:08:58,908 INFO L125 PetriNetUnfolderBase]: For 435615/435615 co-relation queries the response was YES. [2024-06-28 00:08:58,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14556 conditions, 1920 events. 1052/1920 cut-off events. For 435615/435615 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11473 event pairs, 268 based on Foata normal form. 8/1926 useless extension candidates. Maximal degree in co-relation 14378. Up to 1363 conditions per place. [2024-06-28 00:08:58,933 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 294 selfloop transitions, 131 changer transitions 7/434 dead transitions. [2024-06-28 00:08:58,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 434 transitions, 5923 flow [2024-06-28 00:08:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:58,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:58,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 00:08:58,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 00:08:58,934 INFO L175 Difference]: Start difference. First operand has 441 places, 410 transitions, 4713 flow. Second operand 11 states and 130 transitions. [2024-06-28 00:08:58,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 434 transitions, 5923 flow [2024-06-28 00:09:00,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 434 transitions, 5657 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:00,082 INFO L231 Difference]: Finished difference. Result has 438 places, 408 transitions, 4695 flow [2024-06-28 00:09:00,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4695, PETRI_PLACES=438, PETRI_TRANSITIONS=408} [2024-06-28 00:09:00,082 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-28 00:09:00,082 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 408 transitions, 4695 flow [2024-06-28 00:09:00,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:00,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:00,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:00,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 00:09:00,082 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:00,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:00,083 INFO L85 PathProgramCache]: Analyzing trace with hash 104277623, now seen corresponding path program 4 times [2024-06-28 00:09:00,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:00,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680057274] [2024-06-28 00:09:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:00,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680057274] [2024-06-28 00:09:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680057274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:01,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:01,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:01,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787534256] [2024-06-28 00:09:01,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:01,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:01,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:01,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:02,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:02,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 408 transitions, 4695 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:02,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:02,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:02,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:02,604 INFO L124 PetriNetUnfolderBase]: 1021/1859 cut-off events. [2024-06-28 00:09:02,604 INFO L125 PetriNetUnfolderBase]: For 363749/363749 co-relation queries the response was YES. [2024-06-28 00:09:02,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13042 conditions, 1859 events. 1021/1859 cut-off events. For 363749/363749 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11044 event pairs, 259 based on Foata normal form. 10/1867 useless extension candidates. Maximal degree in co-relation 12864. Up to 1631 conditions per place. [2024-06-28 00:09:02,630 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 356 selfloop transitions, 56 changer transitions 13/427 dead transitions. [2024-06-28 00:09:02,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 427 transitions, 5605 flow [2024-06-28 00:09:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:09:02,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:09:02,631 INFO L175 Difference]: Start difference. First operand has 438 places, 408 transitions, 4695 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:09:02,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 427 transitions, 5605 flow [2024-06-28 00:09:03,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 427 transitions, 5341 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:03,469 INFO L231 Difference]: Finished difference. Result has 438 places, 404 transitions, 4505 flow [2024-06-28 00:09:03,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4431, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4505, PETRI_PLACES=438, PETRI_TRANSITIONS=404} [2024-06-28 00:09:03,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-28 00:09:03,470 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 404 transitions, 4505 flow [2024-06-28 00:09:03,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:03,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:03,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:03,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 00:09:03,470 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:03,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:03,470 INFO L85 PathProgramCache]: Analyzing trace with hash -925392545, now seen corresponding path program 5 times [2024-06-28 00:09:03,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:03,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356424074] [2024-06-28 00:09:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:03,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:05,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:05,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356424074] [2024-06-28 00:09:05,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356424074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:05,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:05,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:05,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370172875] [2024-06-28 00:09:05,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:05,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:05,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:05,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:05,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 404 transitions, 4505 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:05,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:05,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:05,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:06,253 INFO L124 PetriNetUnfolderBase]: 986/1790 cut-off events. [2024-06-28 00:09:06,253 INFO L125 PetriNetUnfolderBase]: For 273551/273551 co-relation queries the response was YES. [2024-06-28 00:09:06,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11560 conditions, 1790 events. 986/1790 cut-off events. For 273551/273551 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10597 event pairs, 235 based on Foata normal form. 8/1796 useless extension candidates. Maximal degree in co-relation 11382. Up to 1567 conditions per place. [2024-06-28 00:09:06,286 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 351 selfloop transitions, 53 changer transitions 17/423 dead transitions. [2024-06-28 00:09:06,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 423 transitions, 5401 flow [2024-06-28 00:09:06,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 00:09:06,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 00:09:06,287 INFO L175 Difference]: Start difference. First operand has 438 places, 404 transitions, 4505 flow. Second operand 12 states and 127 transitions. [2024-06-28 00:09:06,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 423 transitions, 5401 flow [2024-06-28 00:09:07,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 423 transitions, 5279 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:07,134 INFO L231 Difference]: Finished difference. Result has 436 places, 399 transitions, 4440 flow [2024-06-28 00:09:07,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4383, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4440, PETRI_PLACES=436, PETRI_TRANSITIONS=399} [2024-06-28 00:09:07,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-28 00:09:07,135 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 399 transitions, 4440 flow [2024-06-28 00:09:07,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:07,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:07,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:07,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 00:09:07,135 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:07,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1640619651, now seen corresponding path program 6 times [2024-06-28 00:09:07,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:07,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014926820] [2024-06-28 00:09:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:07,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:09,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:09,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014926820] [2024-06-28 00:09:09,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014926820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:09,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:09,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:09,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851185078] [2024-06-28 00:09:09,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:09,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:09,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:09,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:09,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:10,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:10,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 399 transitions, 4440 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:10,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:10,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:10,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:10,762 INFO L124 PetriNetUnfolderBase]: 978/1774 cut-off events. [2024-06-28 00:09:10,763 INFO L125 PetriNetUnfolderBase]: For 291479/291479 co-relation queries the response was YES. [2024-06-28 00:09:10,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11458 conditions, 1774 events. 978/1774 cut-off events. For 291479/291479 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 10441 event pairs, 245 based on Foata normal form. 10/1782 useless extension candidates. Maximal degree in co-relation 11280. Up to 1502 conditions per place. [2024-06-28 00:09:10,780 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 330 selfloop transitions, 72 changer transitions 12/416 dead transitions. [2024-06-28 00:09:10,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 416 transitions, 5320 flow [2024-06-28 00:09:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:10,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 00:09:10,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 00:09:10,780 INFO L175 Difference]: Start difference. First operand has 436 places, 399 transitions, 4440 flow. Second operand 12 states and 130 transitions. [2024-06-28 00:09:10,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 416 transitions, 5320 flow [2024-06-28 00:09:11,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 416 transitions, 5200 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:09:11,532 INFO L231 Difference]: Finished difference. Result has 431 places, 395 transitions, 4423 flow [2024-06-28 00:09:11,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4320, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4423, PETRI_PLACES=431, PETRI_TRANSITIONS=395} [2024-06-28 00:09:11,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 401 predicate places. [2024-06-28 00:09:11,533 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 395 transitions, 4423 flow [2024-06-28 00:09:11,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:11,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:11,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:11,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 00:09:11,533 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:11,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:11,533 INFO L85 PathProgramCache]: Analyzing trace with hash -909466279, now seen corresponding path program 7 times [2024-06-28 00:09:11,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:11,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590013014] [2024-06-28 00:09:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:11,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:13,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:13,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:13,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590013014] [2024-06-28 00:09:13,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590013014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:13,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:13,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:13,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113268359] [2024-06-28 00:09:13,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:13,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:13,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:13,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:13,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:13,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:13,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 395 transitions, 4423 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:13,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:13,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:13,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:14,555 INFO L124 PetriNetUnfolderBase]: 993/1811 cut-off events. [2024-06-28 00:09:14,555 INFO L125 PetriNetUnfolderBase]: For 363347/363347 co-relation queries the response was YES. [2024-06-28 00:09:14,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12865 conditions, 1811 events. 993/1811 cut-off events. For 363347/363347 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10665 event pairs, 254 based on Foata normal form. 8/1817 useless extension candidates. Maximal degree in co-relation 12687. Up to 1477 conditions per place. [2024-06-28 00:09:14,578 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 335 selfloop transitions, 73 changer transitions 7/417 dead transitions. [2024-06-28 00:09:14,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 417 transitions, 5591 flow [2024-06-28 00:09:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 00:09:14,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 00:09:14,579 INFO L175 Difference]: Start difference. First operand has 431 places, 395 transitions, 4423 flow. Second operand 12 states and 135 transitions. [2024-06-28 00:09:14,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 417 transitions, 5591 flow [2024-06-28 00:09:15,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 417 transitions, 5439 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:15,952 INFO L231 Difference]: Finished difference. Result has 430 places, 393 transitions, 4404 flow [2024-06-28 00:09:15,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4273, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4404, PETRI_PLACES=430, PETRI_TRANSITIONS=393} [2024-06-28 00:09:15,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 400 predicate places. [2024-06-28 00:09:15,953 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 393 transitions, 4404 flow [2024-06-28 00:09:15,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:15,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:15,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:15,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 00:09:15,954 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:15,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:15,954 INFO L85 PathProgramCache]: Analyzing trace with hash -909460699, now seen corresponding path program 8 times [2024-06-28 00:09:15,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:15,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467261414] [2024-06-28 00:09:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:15,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:18,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467261414] [2024-06-28 00:09:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467261414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:18,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:18,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:18,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289058911] [2024-06-28 00:09:18,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:18,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:18,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:18,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:18,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:18,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:18,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 393 transitions, 4404 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:18,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:18,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:18,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:19,100 INFO L124 PetriNetUnfolderBase]: 962/1750 cut-off events. [2024-06-28 00:09:19,100 INFO L125 PetriNetUnfolderBase]: For 291521/291521 co-relation queries the response was YES. [2024-06-28 00:09:19,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11349 conditions, 1750 events. 962/1750 cut-off events. For 291521/291521 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10280 event pairs, 245 based on Foata normal form. 10/1758 useless extension candidates. Maximal degree in co-relation 11171. Up to 1477 conditions per place. [2024-06-28 00:09:19,117 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 325 selfloop transitions, 70 changer transitions 13/410 dead transitions. [2024-06-28 00:09:19,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 410 transitions, 5272 flow [2024-06-28 00:09:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 00:09:19,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 00:09:19,118 INFO L175 Difference]: Start difference. First operand has 430 places, 393 transitions, 4404 flow. Second operand 12 states and 129 transitions. [2024-06-28 00:09:19,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 410 transitions, 5272 flow [2024-06-28 00:09:19,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 410 transitions, 5124 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:19,939 INFO L231 Difference]: Finished difference. Result has 430 places, 389 transitions, 4356 flow [2024-06-28 00:09:19,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4256, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4356, PETRI_PLACES=430, PETRI_TRANSITIONS=389} [2024-06-28 00:09:19,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 400 predicate places. [2024-06-28 00:09:19,939 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 389 transitions, 4356 flow [2024-06-28 00:09:19,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:19,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:19,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:19,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 00:09:19,940 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:19,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash 632949525, now seen corresponding path program 9 times [2024-06-28 00:09:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:19,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193298513] [2024-06-28 00:09:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:19,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:21,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193298513] [2024-06-28 00:09:21,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193298513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:21,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:21,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:09:21,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945942469] [2024-06-28 00:09:21,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:21,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:09:21,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:21,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:09:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:09:21,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:21,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 389 transitions, 4356 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:21,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:21,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:21,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:22,644 INFO L124 PetriNetUnfolderBase]: 978/1786 cut-off events. [2024-06-28 00:09:22,644 INFO L125 PetriNetUnfolderBase]: For 363347/363347 co-relation queries the response was YES. [2024-06-28 00:09:22,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12729 conditions, 1786 events. 978/1786 cut-off events. For 363347/363347 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10539 event pairs, 250 based on Foata normal form. 8/1792 useless extension candidates. Maximal degree in co-relation 12551. Up to 1422 conditions per place. [2024-06-28 00:09:22,667 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 326 selfloop transitions, 74 changer transitions 9/411 dead transitions. [2024-06-28 00:09:22,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 411 transitions, 5512 flow [2024-06-28 00:09:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 00:09:22,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 00:09:22,668 INFO L175 Difference]: Start difference. First operand has 430 places, 389 transitions, 4356 flow. Second operand 11 states and 131 transitions. [2024-06-28 00:09:22,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 411 transitions, 5512 flow [2024-06-28 00:09:23,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 411 transitions, 5360 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:23,903 INFO L231 Difference]: Finished difference. Result has 426 places, 387 transitions, 4340 flow [2024-06-28 00:09:23,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4206, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4340, PETRI_PLACES=426, PETRI_TRANSITIONS=387} [2024-06-28 00:09:23,903 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-28 00:09:23,903 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 387 transitions, 4340 flow [2024-06-28 00:09:23,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:23,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:23,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:23,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 00:09:23,903 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:23,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash -914823079, now seen corresponding path program 10 times [2024-06-28 00:09:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:23,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138468314] [2024-06-28 00:09:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:23,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:25,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:25,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138468314] [2024-06-28 00:09:25,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138468314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:25,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:25,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:09:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262955780] [2024-06-28 00:09:25,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:25,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:09:25,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:09:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:09:25,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:25,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 387 transitions, 4340 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:25,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:25,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:25,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:26,659 INFO L124 PetriNetUnfolderBase]: 967/1769 cut-off events. [2024-06-28 00:09:26,659 INFO L125 PetriNetUnfolderBase]: For 363359/363359 co-relation queries the response was YES. [2024-06-28 00:09:26,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12395 conditions, 1769 events. 967/1769 cut-off events. For 363359/363359 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10412 event pairs, 261 based on Foata normal form. 10/1777 useless extension candidates. Maximal degree in co-relation 12217. Up to 1490 conditions per place. [2024-06-28 00:09:26,684 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 318 selfloop transitions, 72 changer transitions 11/403 dead transitions. [2024-06-28 00:09:26,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 403 transitions, 5192 flow [2024-06-28 00:09:26,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 00:09:26,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 00:09:26,685 INFO L175 Difference]: Start difference. First operand has 426 places, 387 transitions, 4340 flow. Second operand 11 states and 123 transitions. [2024-06-28 00:09:26,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 403 transitions, 5192 flow [2024-06-28 00:09:27,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 403 transitions, 5040 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:27,790 INFO L231 Difference]: Finished difference. Result has 425 places, 384 transitions, 4309 flow [2024-06-28 00:09:27,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4188, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4309, PETRI_PLACES=425, PETRI_TRANSITIONS=384} [2024-06-28 00:09:27,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 395 predicate places. [2024-06-28 00:09:27,790 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 384 transitions, 4309 flow [2024-06-28 00:09:27,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:27,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:27,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:27,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 00:09:27,790 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:27,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash -914828659, now seen corresponding path program 11 times [2024-06-28 00:09:27,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:27,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635344307] [2024-06-28 00:09:27,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:27,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:30,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:30,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635344307] [2024-06-28 00:09:30,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635344307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:30,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:30,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:09:30,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991882567] [2024-06-28 00:09:30,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:30,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:09:30,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:30,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:09:30,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:09:30,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:30,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 384 transitions, 4309 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:30,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:30,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:30,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:30,986 INFO L124 PetriNetUnfolderBase]: 933/1703 cut-off events. [2024-06-28 00:09:30,987 INFO L125 PetriNetUnfolderBase]: For 273505/273505 co-relation queries the response was YES. [2024-06-28 00:09:31,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11111 conditions, 1703 events. 933/1703 cut-off events. For 273505/273505 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 9968 event pairs, 239 based on Foata normal form. 8/1709 useless extension candidates. Maximal degree in co-relation 10933. Up to 1565 conditions per place. [2024-06-28 00:09:31,008 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 348 selfloop transitions, 37 changer transitions 12/399 dead transitions. [2024-06-28 00:09:31,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 399 transitions, 5145 flow [2024-06-28 00:09:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:09:31,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:09:31,009 INFO L175 Difference]: Start difference. First operand has 425 places, 384 transitions, 4309 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:09:31,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 399 transitions, 5145 flow [2024-06-28 00:09:31,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 399 transitions, 4995 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:31,877 INFO L231 Difference]: Finished difference. Result has 424 places, 380 transitions, 4187 flow [2024-06-28 00:09:31,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4159, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4187, PETRI_PLACES=424, PETRI_TRANSITIONS=380} [2024-06-28 00:09:31,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-28 00:09:31,877 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 380 transitions, 4187 flow [2024-06-28 00:09:31,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:31,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:31,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:31,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 00:09:31,878 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:31,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:31,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1053500959, now seen corresponding path program 12 times [2024-06-28 00:09:31,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:31,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013265277] [2024-06-28 00:09:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:33,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:33,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013265277] [2024-06-28 00:09:33,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013265277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:33,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:33,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:33,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045847835] [2024-06-28 00:09:33,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:33,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:33,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:33,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:33,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:33,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 380 transitions, 4187 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:33,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:33,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:33,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:34,744 INFO L124 PetriNetUnfolderBase]: 952/1740 cut-off events. [2024-06-28 00:09:34,744 INFO L125 PetriNetUnfolderBase]: For 362999/362999 co-relation queries the response was YES. [2024-06-28 00:09:34,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12405 conditions, 1740 events. 952/1740 cut-off events. For 362999/362999 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10164 event pairs, 250 based on Foata normal form. 8/1746 useless extension candidates. Maximal degree in co-relation 12227. Up to 1382 conditions per place. [2024-06-28 00:09:34,767 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 319 selfloop transitions, 72 changer transitions 10/403 dead transitions. [2024-06-28 00:09:34,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 403 transitions, 5329 flow [2024-06-28 00:09:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 00:09:34,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 00:09:34,768 INFO L175 Difference]: Start difference. First operand has 424 places, 380 transitions, 4187 flow. Second operand 12 states and 137 transitions. [2024-06-28 00:09:34,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 403 transitions, 5329 flow [2024-06-28 00:09:35,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 403 transitions, 5245 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:35,637 INFO L231 Difference]: Finished difference. Result has 423 places, 377 transitions, 4223 flow [2024-06-28 00:09:35,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4105, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4223, PETRI_PLACES=423, PETRI_TRANSITIONS=377} [2024-06-28 00:09:35,638 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2024-06-28 00:09:35,638 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 377 transitions, 4223 flow [2024-06-28 00:09:35,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:35,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:35,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:35,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 00:09:35,638 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:35,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:35,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1057075879, now seen corresponding path program 13 times [2024-06-28 00:09:35,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:35,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220495341] [2024-06-28 00:09:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:35,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:37,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:37,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220495341] [2024-06-28 00:09:37,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220495341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:37,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:37,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:37,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486075161] [2024-06-28 00:09:37,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:37,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:37,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:37,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:37,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:37,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 377 transitions, 4223 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:37,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:37,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:37,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:38,492 INFO L124 PetriNetUnfolderBase]: 942/1722 cut-off events. [2024-06-28 00:09:38,493 INFO L125 PetriNetUnfolderBase]: For 363241/363241 co-relation queries the response was YES. [2024-06-28 00:09:38,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12395 conditions, 1722 events. 942/1722 cut-off events. For 363241/363241 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10009 event pairs, 252 based on Foata normal form. 8/1728 useless extension candidates. Maximal degree in co-relation 12217. Up to 1356 conditions per place. [2024-06-28 00:09:38,514 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 316 selfloop transitions, 70 changer transitions 13/401 dead transitions. [2024-06-28 00:09:38,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 401 transitions, 5363 flow [2024-06-28 00:09:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:38,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:09:38,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:09:38,515 INFO L175 Difference]: Start difference. First operand has 423 places, 377 transitions, 4223 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:09:38,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 401 transitions, 5363 flow [2024-06-28 00:09:39,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 401 transitions, 5214 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:39,357 INFO L231 Difference]: Finished difference. Result has 422 places, 373 transitions, 4175 flow [2024-06-28 00:09:39,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4076, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4175, PETRI_PLACES=422, PETRI_TRANSITIONS=373} [2024-06-28 00:09:39,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 392 predicate places. [2024-06-28 00:09:39,357 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 373 transitions, 4175 flow [2024-06-28 00:09:39,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:39,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:39,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:39,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 00:09:39,358 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:39,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722829, now seen corresponding path program 14 times [2024-06-28 00:09:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719757428] [2024-06-28 00:09:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:39,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:41,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:41,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719757428] [2024-06-28 00:09:41,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719757428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:41,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:41,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:41,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214260355] [2024-06-28 00:09:41,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:41,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:41,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:41,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:41,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:41,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:41,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 373 transitions, 4175 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:41,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:41,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:41,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:41,882 INFO L124 PetriNetUnfolderBase]: 928/1696 cut-off events. [2024-06-28 00:09:41,882 INFO L125 PetriNetUnfolderBase]: For 363203/363203 co-relation queries the response was YES. [2024-06-28 00:09:41,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12275 conditions, 1696 events. 928/1696 cut-off events. For 363203/363203 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9801 event pairs, 246 based on Foata normal form. 8/1702 useless extension candidates. Maximal degree in co-relation 12097. Up to 1356 conditions per place. [2024-06-28 00:09:41,904 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 315 selfloop transitions, 71 changer transitions 7/395 dead transitions. [2024-06-28 00:09:41,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 395 transitions, 5299 flow [2024-06-28 00:09:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 00:09:41,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 00:09:41,905 INFO L175 Difference]: Start difference. First operand has 422 places, 373 transitions, 4175 flow. Second operand 11 states and 128 transitions. [2024-06-28 00:09:41,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 395 transitions, 5299 flow [2024-06-28 00:09:42,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 395 transitions, 5114 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:42,873 INFO L231 Difference]: Finished difference. Result has 416 places, 371 transitions, 4116 flow [2024-06-28 00:09:42,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4116, PETRI_PLACES=416, PETRI_TRANSITIONS=371} [2024-06-28 00:09:42,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 386 predicate places. [2024-06-28 00:09:42,873 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 371 transitions, 4116 flow [2024-06-28 00:09:42,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:42,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:42,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:42,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 00:09:42,873 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:42,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1053351229, now seen corresponding path program 15 times [2024-06-28 00:09:42,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:42,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938750678] [2024-06-28 00:09:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:42,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:44,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:44,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938750678] [2024-06-28 00:09:44,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938750678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:44,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:44,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:44,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175228615] [2024-06-28 00:09:44,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:44,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:44,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:44,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:44,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:44,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 371 transitions, 4116 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:44,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:44,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:44,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:45,746 INFO L124 PetriNetUnfolderBase]: 897/1635 cut-off events. [2024-06-28 00:09:45,746 INFO L125 PetriNetUnfolderBase]: For 291257/291257 co-relation queries the response was YES. [2024-06-28 00:09:45,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10688 conditions, 1635 events. 897/1635 cut-off events. For 291257/291257 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9413 event pairs, 237 based on Foata normal form. 10/1643 useless extension candidates. Maximal degree in co-relation 10511. Up to 1487 conditions per place. [2024-06-28 00:09:45,774 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 335 selfloop transitions, 34 changer transitions 17/388 dead transitions. [2024-06-28 00:09:45,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 388 transitions, 4940 flow [2024-06-28 00:09:45,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:09:45,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:09:45,775 INFO L175 Difference]: Start difference. First operand has 416 places, 371 transitions, 4116 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:09:45,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 388 transitions, 4940 flow [2024-06-28 00:09:46,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 388 transitions, 4796 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:46,806 INFO L231 Difference]: Finished difference. Result has 416 places, 365 transitions, 3969 flow [2024-06-28 00:09:46,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3972, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3969, PETRI_PLACES=416, PETRI_TRANSITIONS=365} [2024-06-28 00:09:46,807 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 386 predicate places. [2024-06-28 00:09:46,807 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 365 transitions, 3969 flow [2024-06-28 00:09:46,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:46,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:46,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:46,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 00:09:46,807 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:46,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:46,807 INFO L85 PathProgramCache]: Analyzing trace with hash 472412429, now seen corresponding path program 16 times [2024-06-28 00:09:46,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:46,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921113815] [2024-06-28 00:09:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:46,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:48,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:48,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921113815] [2024-06-28 00:09:48,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921113815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:48,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:48,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:48,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551297786] [2024-06-28 00:09:48,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:48,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:48,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:48,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 365 transitions, 3969 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:48,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:48,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:48,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:49,613 INFO L124 PetriNetUnfolderBase]: 911/1665 cut-off events. [2024-06-28 00:09:49,613 INFO L125 PetriNetUnfolderBase]: For 362781/362781 co-relation queries the response was YES. [2024-06-28 00:09:49,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11948 conditions, 1665 events. 911/1665 cut-off events. For 362781/362781 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9594 event pairs, 248 based on Foata normal form. 8/1671 useless extension candidates. Maximal degree in co-relation 11771. Up to 1308 conditions per place. [2024-06-28 00:09:49,637 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 323 selfloop transitions, 53 changer transitions 14/392 dead transitions. [2024-06-28 00:09:49,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 392 transitions, 5103 flow [2024-06-28 00:09:49,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:49,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:09:49,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 00:09:49,637 INFO L175 Difference]: Start difference. First operand has 416 places, 365 transitions, 3969 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:09:49,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 392 transitions, 5103 flow [2024-06-28 00:09:50,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 392 transitions, 4994 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:50,598 INFO L231 Difference]: Finished difference. Result has 407 places, 362 transitions, 3950 flow [2024-06-28 00:09:50,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3864, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3950, PETRI_PLACES=407, PETRI_TRANSITIONS=362} [2024-06-28 00:09:50,598 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-28 00:09:50,598 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 362 transitions, 3950 flow [2024-06-28 00:09:50,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:50,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:50,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:50,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 00:09:50,599 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:50,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash 476131499, now seen corresponding path program 17 times [2024-06-28 00:09:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:50,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300472977] [2024-06-28 00:09:50,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:50,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:52,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:52,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300472977] [2024-06-28 00:09:52,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300472977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:52,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:52,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:52,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337627137] [2024-06-28 00:09:52,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:52,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:52,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:52,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:52,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:52,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:52,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 362 transitions, 3950 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:52,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:52,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:52,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:53,227 INFO L124 PetriNetUnfolderBase]: 928/1704 cut-off events. [2024-06-28 00:09:53,227 INFO L125 PetriNetUnfolderBase]: For 445832/445832 co-relation queries the response was YES. [2024-06-28 00:09:53,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13317 conditions, 1704 events. 928/1704 cut-off events. For 445832/445832 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9877 event pairs, 261 based on Foata normal form. 8/1710 useless extension candidates. Maximal degree in co-relation 13142. Up to 1206 conditions per place. [2024-06-28 00:09:53,248 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 247 selfloop transitions, 130 changer transitions 8/387 dead transitions. [2024-06-28 00:09:53,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 387 transitions, 5068 flow [2024-06-28 00:09:53,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 00:09:53,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 00:09:53,248 INFO L175 Difference]: Start difference. First operand has 407 places, 362 transitions, 3950 flow. Second operand 11 states and 135 transitions. [2024-06-28 00:09:53,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 387 transitions, 5068 flow [2024-06-28 00:09:54,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 387 transitions, 4967 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:09:54,379 INFO L231 Difference]: Finished difference. Result has 406 places, 360 transitions, 4094 flow [2024-06-28 00:09:54,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3851, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4094, PETRI_PLACES=406, PETRI_TRANSITIONS=360} [2024-06-28 00:09:54,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 376 predicate places. [2024-06-28 00:09:54,380 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 360 transitions, 4094 flow [2024-06-28 00:09:54,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:54,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:54,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:54,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 00:09:54,380 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:54,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:54,380 INFO L85 PathProgramCache]: Analyzing trace with hash 476137079, now seen corresponding path program 18 times [2024-06-28 00:09:54,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:54,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026759279] [2024-06-28 00:09:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:54,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:56,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:56,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026759279] [2024-06-28 00:09:56,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026759279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:56,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:56,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:56,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422734984] [2024-06-28 00:09:56,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:56,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:56,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:56,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:56,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:09:56,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 360 transitions, 4094 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:56,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:56,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:09:56,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:57,024 INFO L124 PetriNetUnfolderBase]: 897/1643 cut-off events. [2024-06-28 00:09:57,024 INFO L125 PetriNetUnfolderBase]: For 375394/375394 co-relation queries the response was YES. [2024-06-28 00:09:57,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12024 conditions, 1643 events. 897/1643 cut-off events. For 375394/375394 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9451 event pairs, 252 based on Foata normal form. 10/1651 useless extension candidates. Maximal degree in co-relation 11849. Up to 1457 conditions per place. [2024-06-28 00:09:57,047 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 313 selfloop transitions, 51 changer transitions 14/380 dead transitions. [2024-06-28 00:09:57,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 380 transitions, 4914 flow [2024-06-28 00:09:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:09:57,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:09:57,048 INFO L175 Difference]: Start difference. First operand has 406 places, 360 transitions, 4094 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:09:57,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 380 transitions, 4914 flow [2024-06-28 00:09:57,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 380 transitions, 4652 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:57,976 INFO L231 Difference]: Finished difference. Result has 406 places, 356 transitions, 3894 flow [2024-06-28 00:09:57,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3832, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3894, PETRI_PLACES=406, PETRI_TRANSITIONS=356} [2024-06-28 00:09:57,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 376 predicate places. [2024-06-28 00:09:57,977 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 356 transitions, 3894 flow [2024-06-28 00:09:57,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:57,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:57,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:57,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 00:09:57,977 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:57,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:57,977 INFO L85 PathProgramCache]: Analyzing trace with hash 475987349, now seen corresponding path program 19 times [2024-06-28 00:09:57,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:57,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381819723] [2024-06-28 00:09:57,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:57,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:59,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:59,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381819723] [2024-06-28 00:09:59,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381819723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:59,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:59,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:59,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320543802] [2024-06-28 00:09:59,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:59,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:59,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:59,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:59,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:00,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:00,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 356 transitions, 3894 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:00,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:00,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:00,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:00,657 INFO L124 PetriNetUnfolderBase]: 884/1620 cut-off events. [2024-06-28 00:10:00,657 INFO L125 PetriNetUnfolderBase]: For 357303/357303 co-relation queries the response was YES. [2024-06-28 00:10:00,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11720 conditions, 1620 events. 884/1620 cut-off events. For 357303/357303 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9294 event pairs, 246 based on Foata normal form. 8/1626 useless extension candidates. Maximal degree in co-relation 11545. Up to 1439 conditions per place. [2024-06-28 00:10:00,678 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 310 selfloop transitions, 48 changer transitions 16/376 dead transitions. [2024-06-28 00:10:00,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 376 transitions, 4700 flow [2024-06-28 00:10:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:10:00,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:10:00,679 INFO L175 Difference]: Start difference. First operand has 406 places, 356 transitions, 3894 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:10:00,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 376 transitions, 4700 flow [2024-06-28 00:10:01,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 376 transitions, 4588 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:10:01,521 INFO L231 Difference]: Finished difference. Result has 403 places, 351 transitions, 3819 flow [2024-06-28 00:10:01,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3819, PETRI_PLACES=403, PETRI_TRANSITIONS=351} [2024-06-28 00:10:01,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-28 00:10:01,521 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 351 transitions, 3819 flow [2024-06-28 00:10:01,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:01,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:01,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:01,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 00:10:01,521 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:01,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:01,521 INFO L85 PathProgramCache]: Analyzing trace with hash 614515499, now seen corresponding path program 20 times [2024-06-28 00:10:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:01,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180359100] [2024-06-28 00:10:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:01,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:03,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180359100] [2024-06-28 00:10:03,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180359100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:03,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:03,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:10:03,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111541461] [2024-06-28 00:10:03,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:03,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:10:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:03,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:10:03,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:10:03,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:03,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 351 transitions, 3819 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:03,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:03,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:03,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:04,187 INFO L124 PetriNetUnfolderBase]: 864/1575 cut-off events. [2024-06-28 00:10:04,188 INFO L125 PetriNetUnfolderBase]: For 357171/357171 co-relation queries the response was YES. [2024-06-28 00:10:04,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11443 conditions, 1575 events. 864/1575 cut-off events. For 357171/357171 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8923 event pairs, 244 based on Foata normal form. 8/1581 useless extension candidates. Maximal degree in co-relation 11268. Up to 860 conditions per place. [2024-06-28 00:10:04,207 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 239 selfloop transitions, 123 changer transitions 10/374 dead transitions. [2024-06-28 00:10:04,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 374 transitions, 4903 flow [2024-06-28 00:10:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:10:04,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:10:04,208 INFO L175 Difference]: Start difference. First operand has 403 places, 351 transitions, 3819 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:10:04,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 374 transitions, 4903 flow [2024-06-28 00:10:04,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 374 transitions, 4769 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:04,969 INFO L231 Difference]: Finished difference. Result has 398 places, 348 transitions, 3902 flow [2024-06-28 00:10:04,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3687, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3902, PETRI_PLACES=398, PETRI_TRANSITIONS=348} [2024-06-28 00:10:04,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-28 00:10:04,969 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 348 transitions, 3902 flow [2024-06-28 00:10:04,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:04,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:04,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:04,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 00:10:04,970 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:04,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash 620022029, now seen corresponding path program 21 times [2024-06-28 00:10:04,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:04,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830971998] [2024-06-28 00:10:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:04,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:06,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:06,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830971998] [2024-06-28 00:10:06,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830971998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:06,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:06,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:06,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785005330] [2024-06-28 00:10:06,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:06,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:06,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:07,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:07,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 348 transitions, 3902 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:07,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:07,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:07,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:07,808 INFO L124 PetriNetUnfolderBase]: 883/1616 cut-off events. [2024-06-28 00:10:07,808 INFO L125 PetriNetUnfolderBase]: For 446009/446009 co-relation queries the response was YES. [2024-06-28 00:10:07,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12957 conditions, 1616 events. 883/1616 cut-off events. For 446009/446009 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9215 event pairs, 257 based on Foata normal form. 8/1622 useless extension candidates. Maximal degree in co-relation 12784. Up to 1268 conditions per place. [2024-06-28 00:10:07,829 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 276 selfloop transitions, 86 changer transitions 7/371 dead transitions. [2024-06-28 00:10:07,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 371 transitions, 4980 flow [2024-06-28 00:10:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 00:10:07,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 00:10:07,830 INFO L175 Difference]: Start difference. First operand has 398 places, 348 transitions, 3902 flow. Second operand 12 states and 137 transitions. [2024-06-28 00:10:07,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 371 transitions, 4980 flow [2024-06-28 00:10:08,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 371 transitions, 4769 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:08,741 INFO L231 Difference]: Finished difference. Result has 397 places, 346 transitions, 3849 flow [2024-06-28 00:10:08,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3693, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3849, PETRI_PLACES=397, PETRI_TRANSITIONS=346} [2024-06-28 00:10:08,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-28 00:10:08,741 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 346 transitions, 3849 flow [2024-06-28 00:10:08,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:08,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:08,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:08,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 00:10:08,741 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:08,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:08,742 INFO L85 PathProgramCache]: Analyzing trace with hash 614665229, now seen corresponding path program 22 times [2024-06-28 00:10:08,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:08,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827721065] [2024-06-28 00:10:08,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:08,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:10,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:10,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827721065] [2024-06-28 00:10:10,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827721065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:10,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:10,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:10:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751590945] [2024-06-28 00:10:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:10,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:10:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:10:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:10:10,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:10,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 346 transitions, 3849 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:10,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:10,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:10,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:11,395 INFO L124 PetriNetUnfolderBase]: 881/1614 cut-off events. [2024-06-28 00:10:11,395 INFO L125 PetriNetUnfolderBase]: For 463570/463570 co-relation queries the response was YES. [2024-06-28 00:10:11,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12944 conditions, 1614 events. 881/1614 cut-off events. For 463570/463570 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9216 event pairs, 261 based on Foata normal form. 10/1622 useless extension candidates. Maximal degree in co-relation 12772. Up to 1197 conditions per place. [2024-06-28 00:10:11,416 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 121 changer transitions 11/364 dead transitions. [2024-06-28 00:10:11,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 364 transitions, 4631 flow [2024-06-28 00:10:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:10:11,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 00:10:11,416 INFO L175 Difference]: Start difference. First operand has 397 places, 346 transitions, 3849 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:10:11,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 364 transitions, 4631 flow [2024-06-28 00:10:12,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 364 transitions, 4459 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:12,433 INFO L231 Difference]: Finished difference. Result has 396 places, 343 transitions, 3890 flow [2024-06-28 00:10:12,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3890, PETRI_PLACES=396, PETRI_TRANSITIONS=343} [2024-06-28 00:10:12,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 00:10:12,433 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 343 transitions, 3890 flow [2024-06-28 00:10:12,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:12,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:12,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:12,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 00:10:12,433 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:12,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:12,434 INFO L85 PathProgramCache]: Analyzing trace with hash 614659649, now seen corresponding path program 23 times [2024-06-28 00:10:12,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:12,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031935784] [2024-06-28 00:10:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:12,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:14,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:14,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031935784] [2024-06-28 00:10:14,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031935784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:14,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:14,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:10:14,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260047557] [2024-06-28 00:10:14,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:14,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:10:14,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:14,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:10:14,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:10:14,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:14,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 343 transitions, 3890 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:14,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:14,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:14,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:15,300 INFO L124 PetriNetUnfolderBase]: 869/1594 cut-off events. [2024-06-28 00:10:15,301 INFO L125 PetriNetUnfolderBase]: For 446056/446056 co-relation queries the response was YES. [2024-06-28 00:10:15,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12948 conditions, 1594 events. 869/1594 cut-off events. For 446056/446056 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9077 event pairs, 261 based on Foata normal form. 8/1600 useless extension candidates. Maximal degree in co-relation 12776. Up to 1438 conditions per place. [2024-06-28 00:10:15,321 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 303 selfloop transitions, 41 changer transitions 14/360 dead transitions. [2024-06-28 00:10:15,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 360 transitions, 4656 flow [2024-06-28 00:10:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:10:15,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:10:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 00:10:15,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 00:10:15,329 INFO L175 Difference]: Start difference. First operand has 396 places, 343 transitions, 3890 flow. Second operand 10 states and 117 transitions. [2024-06-28 00:10:15,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 360 transitions, 4656 flow [2024-06-28 00:10:16,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 360 transitions, 4408 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:16,454 INFO L231 Difference]: Finished difference. Result has 394 places, 337 transitions, 3646 flow [2024-06-28 00:10:16,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3642, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3646, PETRI_PLACES=394, PETRI_TRANSITIONS=337} [2024-06-28 00:10:16,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 364 predicate places. [2024-06-28 00:10:16,454 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 337 transitions, 3646 flow [2024-06-28 00:10:16,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:16,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:16,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:16,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 00:10:16,455 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:16,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash 620027609, now seen corresponding path program 24 times [2024-06-28 00:10:16,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:16,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124187324] [2024-06-28 00:10:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:16,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:18,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:18,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124187324] [2024-06-28 00:10:18,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124187324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:18,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:18,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:18,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248596497] [2024-06-28 00:10:18,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:18,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:18,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:18,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:18,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:18,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:18,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 337 transitions, 3646 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:18,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:18,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:18,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:19,570 INFO L124 PetriNetUnfolderBase]: 861/1582 cut-off events. [2024-06-28 00:10:19,570 INFO L125 PetriNetUnfolderBase]: For 463208/463208 co-relation queries the response was YES. [2024-06-28 00:10:19,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12662 conditions, 1582 events. 861/1582 cut-off events. For 463208/463208 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9002 event pairs, 261 based on Foata normal form. 10/1590 useless extension candidates. Maximal degree in co-relation 12490. Up to 1301 conditions per place. [2024-06-28 00:10:19,592 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 262 selfloop transitions, 80 changer transitions 12/356 dead transitions. [2024-06-28 00:10:19,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 356 transitions, 4414 flow [2024-06-28 00:10:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 00:10:19,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 00:10:19,596 INFO L175 Difference]: Start difference. First operand has 394 places, 337 transitions, 3646 flow. Second operand 12 states and 133 transitions. [2024-06-28 00:10:19,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 356 transitions, 4414 flow [2024-06-28 00:10:20,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 356 transitions, 4316 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 00:10:20,580 INFO L231 Difference]: Finished difference. Result has 392 places, 333 transitions, 3668 flow [2024-06-28 00:10:20,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3548, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3668, PETRI_PLACES=392, PETRI_TRANSITIONS=333} [2024-06-28 00:10:20,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 00:10:20,580 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 333 transitions, 3668 flow [2024-06-28 00:10:20,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:20,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:20,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:20,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 00:10:20,581 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:20,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash 620237355, now seen corresponding path program 1 times [2024-06-28 00:10:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:20,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070064763] [2024-06-28 00:10:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:22,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:22,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070064763] [2024-06-28 00:10:22,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070064763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:22,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:22,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:22,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411436836] [2024-06-28 00:10:22,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:22,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:22,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:22,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:22,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:22,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:22,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 333 transitions, 3668 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:22,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:22,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:22,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:23,123 INFO L124 PetriNetUnfolderBase]: 840/1539 cut-off events. [2024-06-28 00:10:23,123 INFO L125 PetriNetUnfolderBase]: For 392662/392662 co-relation queries the response was YES. [2024-06-28 00:10:23,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12562 conditions, 1539 events. 840/1539 cut-off events. For 392662/392662 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8694 event pairs, 257 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 12391. Up to 1311 conditions per place. [2024-06-28 00:10:23,142 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 80 changer transitions 0/346 dead transitions. [2024-06-28 00:10:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 346 transitions, 4396 flow [2024-06-28 00:10:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:10:23,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:10:23,143 INFO L175 Difference]: Start difference. First operand has 392 places, 333 transitions, 3668 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:10:23,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 346 transitions, 4396 flow [2024-06-28 00:10:24,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 346 transitions, 4226 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:24,234 INFO L231 Difference]: Finished difference. Result has 389 places, 334 transitions, 3674 flow [2024-06-28 00:10:24,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3498, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3674, PETRI_PLACES=389, PETRI_TRANSITIONS=334} [2024-06-28 00:10:24,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 00:10:24,234 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 334 transitions, 3674 flow [2024-06-28 00:10:24,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:24,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:24,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:24,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 00:10:24,235 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:24,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:24,235 INFO L85 PathProgramCache]: Analyzing trace with hash 620229419, now seen corresponding path program 25 times [2024-06-28 00:10:24,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:24,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089797041] [2024-06-28 00:10:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:24,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:26,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089797041] [2024-06-28 00:10:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089797041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:26,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:26,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:26,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397876809] [2024-06-28 00:10:26,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:26,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:26,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:26,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:26,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:26,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 334 transitions, 3674 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:26,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:26,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:26,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:27,247 INFO L124 PetriNetUnfolderBase]: 827/1516 cut-off events. [2024-06-28 00:10:27,247 INFO L125 PetriNetUnfolderBase]: For 374973/374973 co-relation queries the response was YES. [2024-06-28 00:10:27,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11174 conditions, 1516 events. 827/1516 cut-off events. For 374973/374973 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8552 event pairs, 248 based on Foata normal form. 10/1524 useless extension candidates. Maximal degree in co-relation 11003. Up to 1244 conditions per place. [2024-06-28 00:10:27,265 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 261 selfloop transitions, 77 changer transitions 12/352 dead transitions. [2024-06-28 00:10:27,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 352 transitions, 4430 flow [2024-06-28 00:10:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:27,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 00:10:27,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 00:10:27,266 INFO L175 Difference]: Start difference. First operand has 389 places, 334 transitions, 3674 flow. Second operand 12 states and 129 transitions. [2024-06-28 00:10:27,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 352 transitions, 4430 flow [2024-06-28 00:10:28,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 352 transitions, 4264 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:28,207 INFO L231 Difference]: Finished difference. Result has 392 places, 330 transitions, 3617 flow [2024-06-28 00:10:28,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3617, PETRI_PLACES=392, PETRI_TRANSITIONS=330} [2024-06-28 00:10:28,207 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 00:10:28,207 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 330 transitions, 3617 flow [2024-06-28 00:10:28,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:28,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:28,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:28,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 00:10:28,207 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:28,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1478301913, now seen corresponding path program 26 times [2024-06-28 00:10:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966075009] [2024-06-28 00:10:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:30,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:30,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966075009] [2024-06-28 00:10:30,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966075009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:30,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:30,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:30,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781281292] [2024-06-28 00:10:30,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:30,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:30,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:30,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:30,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:30,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:30,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 330 transitions, 3617 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:30,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:30,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:30,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:31,050 INFO L124 PetriNetUnfolderBase]: 842/1553 cut-off events. [2024-06-28 00:10:31,050 INFO L125 PetriNetUnfolderBase]: For 452335/452335 co-relation queries the response was YES. [2024-06-28 00:10:31,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12571 conditions, 1553 events. 842/1553 cut-off events. For 452335/452335 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8844 event pairs, 251 based on Foata normal form. 8/1559 useless extension candidates. Maximal degree in co-relation 12399. Up to 1205 conditions per place. [2024-06-28 00:10:31,070 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 68 changer transitions 7/352 dead transitions. [2024-06-28 00:10:31,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 352 transitions, 4655 flow [2024-06-28 00:10:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:10:31,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:10:31,071 INFO L175 Difference]: Start difference. First operand has 392 places, 330 transitions, 3617 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:10:31,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 352 transitions, 4655 flow [2024-06-28 00:10:32,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 352 transitions, 4493 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:32,070 INFO L231 Difference]: Finished difference. Result has 390 places, 328 transitions, 3577 flow [2024-06-28 00:10:32,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3457, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3577, PETRI_PLACES=390, PETRI_TRANSITIONS=328} [2024-06-28 00:10:32,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-28 00:10:32,071 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 328 transitions, 3577 flow [2024-06-28 00:10:32,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:32,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:32,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:32,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 00:10:32,071 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:32,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:32,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1478307493, now seen corresponding path program 27 times [2024-06-28 00:10:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244574527] [2024-06-28 00:10:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:32,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:34,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244574527] [2024-06-28 00:10:34,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244574527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:34,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:34,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924229674] [2024-06-28 00:10:34,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:34,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:34,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:34,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:34,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:34,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 328 transitions, 3577 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:34,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:34,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:34,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:35,244 INFO L124 PetriNetUnfolderBase]: 840/1551 cut-off events. [2024-06-28 00:10:35,244 INFO L125 PetriNetUnfolderBase]: For 470337/470337 co-relation queries the response was YES. [2024-06-28 00:10:35,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12532 conditions, 1551 events. 840/1551 cut-off events. For 470337/470337 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8831 event pairs, 255 based on Foata normal form. 10/1559 useless extension candidates. Maximal degree in co-relation 12360. Up to 1270 conditions per place. [2024-06-28 00:10:35,272 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 267 selfloop transitions, 65 changer transitions 12/346 dead transitions. [2024-06-28 00:10:35,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 346 transitions, 4321 flow [2024-06-28 00:10:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 00:10:35,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 00:10:35,273 INFO L175 Difference]: Start difference. First operand has 390 places, 328 transitions, 3577 flow. Second operand 12 states and 135 transitions. [2024-06-28 00:10:35,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 346 transitions, 4321 flow [2024-06-28 00:10:36,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 346 transitions, 4185 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:36,353 INFO L231 Difference]: Finished difference. Result has 390 places, 324 transitions, 3531 flow [2024-06-28 00:10:36,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3441, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3531, PETRI_PLACES=390, PETRI_TRANSITIONS=324} [2024-06-28 00:10:36,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-28 00:10:36,354 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 324 transitions, 3531 flow [2024-06-28 00:10:36,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:36,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:36,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:36,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 00:10:36,354 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:36,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1478517239, now seen corresponding path program 2 times [2024-06-28 00:10:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:36,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379430327] [2024-06-28 00:10:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:36,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:38,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:38,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379430327] [2024-06-28 00:10:38,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379430327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:38,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:38,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:38,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811753362] [2024-06-28 00:10:38,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:38,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:38,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:38,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:38,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:38,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:38,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 324 transitions, 3531 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:38,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:38,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:38,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:38,905 INFO L124 PetriNetUnfolderBase]: 819/1508 cut-off events. [2024-06-28 00:10:38,905 INFO L125 PetriNetUnfolderBase]: For 398341/398341 co-relation queries the response was YES. [2024-06-28 00:10:38,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12384 conditions, 1508 events. 819/1508 cut-off events. For 398341/398341 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8514 event pairs, 253 based on Foata normal form. 2/1508 useless extension candidates. Maximal degree in co-relation 12212. Up to 1280 conditions per place. [2024-06-28 00:10:38,926 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 269 selfloop transitions, 65 changer transitions 0/336 dead transitions. [2024-06-28 00:10:38,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 336 transitions, 4237 flow [2024-06-28 00:10:38,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:38,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:10:38,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:10:38,927 INFO L175 Difference]: Start difference. First operand has 390 places, 324 transitions, 3531 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:10:38,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 336 transitions, 4237 flow [2024-06-28 00:10:39,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 336 transitions, 4097 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:39,990 INFO L231 Difference]: Finished difference. Result has 387 places, 325 transitions, 3539 flow [2024-06-28 00:10:39,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3539, PETRI_PLACES=387, PETRI_TRANSITIONS=325} [2024-06-28 00:10:39,991 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:10:39,991 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 325 transitions, 3539 flow [2024-06-28 00:10:39,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:39,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:39,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:39,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 00:10:39,991 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:39,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1478509303, now seen corresponding path program 28 times [2024-06-28 00:10:39,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:39,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689260918] [2024-06-28 00:10:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:39,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:42,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:42,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689260918] [2024-06-28 00:10:42,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689260918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:42,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:42,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512949552] [2024-06-28 00:10:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:42,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:42,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:42,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:42,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 325 transitions, 3539 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:42,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:42,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:42,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:42,957 INFO L124 PetriNetUnfolderBase]: 806/1485 cut-off events. [2024-06-28 00:10:42,957 INFO L125 PetriNetUnfolderBase]: For 380529/380529 co-relation queries the response was YES. [2024-06-28 00:10:42,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10986 conditions, 1485 events. 806/1485 cut-off events. For 380529/380529 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8347 event pairs, 248 based on Foata normal form. 10/1493 useless extension candidates. Maximal degree in co-relation 10814. Up to 1213 conditions per place. [2024-06-28 00:10:42,976 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 62 changer transitions 12/342 dead transitions. [2024-06-28 00:10:42,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 342 transitions, 4271 flow [2024-06-28 00:10:42,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:42,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 00:10:42,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 00:10:42,977 INFO L175 Difference]: Start difference. First operand has 387 places, 325 transitions, 3539 flow. Second operand 12 states and 131 transitions. [2024-06-28 00:10:42,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 342 transitions, 4271 flow [2024-06-28 00:10:43,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 342 transitions, 4133 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:43,839 INFO L231 Difference]: Finished difference. Result has 390 places, 321 transitions, 3480 flow [2024-06-28 00:10:43,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3480, PETRI_PLACES=390, PETRI_TRANSITIONS=321} [2024-06-28 00:10:43,839 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-28 00:10:43,839 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 321 transitions, 3480 flow [2024-06-28 00:10:43,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:43,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:43,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:43,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 00:10:43,840 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:43,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1672241323, now seen corresponding path program 29 times [2024-06-28 00:10:43,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:43,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479133218] [2024-06-28 00:10:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:43,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:45,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:45,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479133218] [2024-06-28 00:10:45,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479133218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:45,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:45,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:45,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399950938] [2024-06-28 00:10:45,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:45,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:45,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:45,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:45,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:45,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:45,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 321 transitions, 3480 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:45,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:45,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:45,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:46,721 INFO L124 PetriNetUnfolderBase]: 821/1522 cut-off events. [2024-06-28 00:10:46,721 INFO L125 PetriNetUnfolderBase]: For 458834/458834 co-relation queries the response was YES. [2024-06-28 00:10:46,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12389 conditions, 1522 events. 821/1522 cut-off events. For 458834/458834 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8655 event pairs, 253 based on Foata normal form. 8/1528 useless extension candidates. Maximal degree in co-relation 12216. Up to 1160 conditions per place. [2024-06-28 00:10:46,740 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 68 changer transitions 7/343 dead transitions. [2024-06-28 00:10:46,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 343 transitions, 4502 flow [2024-06-28 00:10:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 00:10:46,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 00:10:46,741 INFO L175 Difference]: Start difference. First operand has 390 places, 321 transitions, 3480 flow. Second operand 12 states and 134 transitions. [2024-06-28 00:10:46,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 343 transitions, 4502 flow [2024-06-28 00:10:47,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 343 transitions, 4370 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:47,924 INFO L231 Difference]: Finished difference. Result has 388 places, 319 transitions, 3470 flow [2024-06-28 00:10:47,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3470, PETRI_PLACES=388, PETRI_TRANSITIONS=319} [2024-06-28 00:10:47,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 00:10:47,925 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 319 transitions, 3470 flow [2024-06-28 00:10:47,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:47,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:47,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:47,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 00:10:47,925 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:47,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1679875259, now seen corresponding path program 3 times [2024-06-28 00:10:47,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:47,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078438624] [2024-06-28 00:10:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:47,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:50,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:50,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078438624] [2024-06-28 00:10:50,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078438624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:50,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:50,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:50,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144429549] [2024-06-28 00:10:50,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:50,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:50,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:50,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:50,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:50,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:50,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 319 transitions, 3470 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:50,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:50,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:50,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:50,858 INFO L124 PetriNetUnfolderBase]: 814/1505 cut-off events. [2024-06-28 00:10:50,858 INFO L125 PetriNetUnfolderBase]: For 422653/422653 co-relation queries the response was YES. [2024-06-28 00:10:50,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12659 conditions, 1505 events. 814/1505 cut-off events. For 422653/422653 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8548 event pairs, 250 based on Foata normal form. 2/1505 useless extension candidates. Maximal degree in co-relation 12486. Up to 1230 conditions per place. [2024-06-28 00:10:50,874 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 264 selfloop transitions, 68 changer transitions 0/334 dead transitions. [2024-06-28 00:10:50,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 334 transitions, 4462 flow [2024-06-28 00:10:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:10:50,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:10:50,875 INFO L175 Difference]: Start difference. First operand has 388 places, 319 transitions, 3470 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:10:50,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 334 transitions, 4462 flow [2024-06-28 00:10:52,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 334 transitions, 4306 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:10:52,010 INFO L231 Difference]: Finished difference. Result has 386 places, 321 transitions, 3487 flow [2024-06-28 00:10:52,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3487, PETRI_PLACES=386, PETRI_TRANSITIONS=321} [2024-06-28 00:10:52,010 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 00:10:52,010 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 321 transitions, 3487 flow [2024-06-28 00:10:52,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:52,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:52,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:52,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 00:10:52,011 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:52,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:52,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1679865959, now seen corresponding path program 4 times [2024-06-28 00:10:52,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:52,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7373055] [2024-06-28 00:10:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:52,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:54,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:54,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7373055] [2024-06-28 00:10:54,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7373055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:54,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:54,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:54,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403380801] [2024-06-28 00:10:54,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:54,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:54,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:54,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 321 transitions, 3487 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:54,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:54,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:54,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:54,815 INFO L124 PetriNetUnfolderBase]: 818/1513 cut-off events. [2024-06-28 00:10:54,815 INFO L125 PetriNetUnfolderBase]: For 422765/422765 co-relation queries the response was YES. [2024-06-28 00:10:54,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12692 conditions, 1513 events. 818/1513 cut-off events. For 422765/422765 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8595 event pairs, 254 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 12520. Up to 1285 conditions per place. [2024-06-28 00:10:54,833 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 265 selfloop transitions, 66 changer transitions 0/333 dead transitions. [2024-06-28 00:10:54,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 333 transitions, 4191 flow [2024-06-28 00:10:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:10:54,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:10:54,834 INFO L175 Difference]: Start difference. First operand has 386 places, 321 transitions, 3487 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:10:54,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 333 transitions, 4191 flow [2024-06-28 00:10:56,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 333 transitions, 4090 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:10:56,101 INFO L231 Difference]: Finished difference. Result has 390 places, 322 transitions, 3540 flow [2024-06-28 00:10:56,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3540, PETRI_PLACES=390, PETRI_TRANSITIONS=322} [2024-06-28 00:10:56,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-28 00:10:56,101 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 322 transitions, 3540 flow [2024-06-28 00:10:56,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:56,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:56,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:56,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 00:10:56,101 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:56,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:56,102 INFO L85 PathProgramCache]: Analyzing trace with hash 869257961, now seen corresponding path program 30 times [2024-06-28 00:10:56,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:56,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439980542] [2024-06-28 00:10:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:56,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:58,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:58,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439980542] [2024-06-28 00:10:58,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439980542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:58,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:58,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:58,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009191800] [2024-06-28 00:10:58,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:58,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:58,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:58,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:58,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:58,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:58,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 322 transitions, 3540 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:58,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:58,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:58,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:58,973 INFO L124 PetriNetUnfolderBase]: 834/1549 cut-off events. [2024-06-28 00:10:58,973 INFO L125 PetriNetUnfolderBase]: For 502939/502939 co-relation queries the response was YES. [2024-06-28 00:10:58,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12894 conditions, 1549 events. 834/1549 cut-off events. For 502939/502939 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8868 event pairs, 270 based on Foata normal form. 10/1557 useless extension candidates. Maximal degree in co-relation 12720. Up to 1277 conditions per place. [2024-06-28 00:10:58,992 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 63 changer transitions 12/339 dead transitions. [2024-06-28 00:10:58,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 339 transitions, 4266 flow [2024-06-28 00:10:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 00:10:58,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 00:10:58,993 INFO L175 Difference]: Start difference. First operand has 390 places, 322 transitions, 3540 flow. Second operand 12 states and 129 transitions. [2024-06-28 00:10:58,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 339 transitions, 4266 flow [2024-06-28 00:11:00,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 339 transitions, 4128 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:11:00,236 INFO L231 Difference]: Finished difference. Result has 393 places, 318 transitions, 3482 flow [2024-06-28 00:11:00,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3482, PETRI_PLACES=393, PETRI_TRANSITIONS=318} [2024-06-28 00:11:00,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-28 00:11:00,236 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 318 transitions, 3482 flow [2024-06-28 00:11:00,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:00,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:00,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:00,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 00:11:00,237 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:00,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:00,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1672246903, now seen corresponding path program 31 times [2024-06-28 00:11:00,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:00,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693605865] [2024-06-28 00:11:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:00,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:02,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:02,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693605865] [2024-06-28 00:11:02,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693605865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:02,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:02,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:02,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732891125] [2024-06-28 00:11:02,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:02,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:02,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:02,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:02,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:02,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:02,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 318 transitions, 3482 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:02,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:02,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:02,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:03,025 INFO L124 PetriNetUnfolderBase]: 824/1535 cut-off events. [2024-06-28 00:11:03,025 INFO L125 PetriNetUnfolderBase]: For 510241/510241 co-relation queries the response was YES. [2024-06-28 00:11:03,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12829 conditions, 1535 events. 824/1535 cut-off events. For 510241/510241 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8811 event pairs, 258 based on Foata normal form. 10/1543 useless extension candidates. Maximal degree in co-relation 12654. Up to 1254 conditions per place. [2024-06-28 00:11:03,044 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 61 changer transitions 12/336 dead transitions. [2024-06-28 00:11:03,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 336 transitions, 4206 flow [2024-06-28 00:11:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 00:11:03,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 00:11:03,045 INFO L175 Difference]: Start difference. First operand has 393 places, 318 transitions, 3482 flow. Second operand 12 states and 131 transitions. [2024-06-28 00:11:03,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 336 transitions, 4206 flow [2024-06-28 00:11:04,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 336 transitions, 4074 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:04,144 INFO L231 Difference]: Finished difference. Result has 392 places, 314 transitions, 3432 flow [2024-06-28 00:11:04,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3432, PETRI_PLACES=392, PETRI_TRANSITIONS=314} [2024-06-28 00:11:04,144 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 00:11:04,144 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 314 transitions, 3432 flow [2024-06-28 00:11:04,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:04,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:04,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:04,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 00:11:04,145 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:04,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1526758477, now seen corresponding path program 5 times [2024-06-28 00:11:04,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:04,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796213040] [2024-06-28 00:11:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:04,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:06,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:06,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796213040] [2024-06-28 00:11:06,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796213040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:06,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:06,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:06,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923662242] [2024-06-28 00:11:06,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:06,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:06,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:06,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:06,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:06,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:06,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 314 transitions, 3432 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:06,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:06,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:06,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:07,483 INFO L124 PetriNetUnfolderBase]: 796/1479 cut-off events. [2024-06-28 00:11:07,483 INFO L125 PetriNetUnfolderBase]: For 416382/416382 co-relation queries the response was YES. [2024-06-28 00:11:07,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12339 conditions, 1479 events. 796/1479 cut-off events. For 416382/416382 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8405 event pairs, 259 based on Foata normal form. 2/1479 useless extension candidates. Maximal degree in co-relation 12164. Up to 1251 conditions per place. [2024-06-28 00:11:07,509 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 262 selfloop transitions, 61 changer transitions 0/325 dead transitions. [2024-06-28 00:11:07,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 325 transitions, 4104 flow [2024-06-28 00:11:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:11:07,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:11:07,510 INFO L175 Difference]: Start difference. First operand has 392 places, 314 transitions, 3432 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:11:07,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 325 transitions, 4104 flow [2024-06-28 00:11:08,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 325 transitions, 3951 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:08,699 INFO L231 Difference]: Finished difference. Result has 388 places, 314 transitions, 3405 flow [2024-06-28 00:11:08,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3279, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3405, PETRI_PLACES=388, PETRI_TRANSITIONS=314} [2024-06-28 00:11:08,699 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 00:11:08,699 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 314 transitions, 3405 flow [2024-06-28 00:11:08,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:08,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:08,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:08,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 00:11:08,699 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:08,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:08,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1672448713, now seen corresponding path program 32 times [2024-06-28 00:11:08,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:08,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733959156] [2024-06-28 00:11:08,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:08,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:10,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:10,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733959156] [2024-06-28 00:11:10,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733959156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:10,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:10,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:10,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085973374] [2024-06-28 00:11:10,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:10,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:10,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:10,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:11,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:11,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 314 transitions, 3405 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:11,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:11,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:11,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:11,663 INFO L124 PetriNetUnfolderBase]: 783/1456 cut-off events. [2024-06-28 00:11:11,663 INFO L125 PetriNetUnfolderBase]: For 397581/397581 co-relation queries the response was YES. [2024-06-28 00:11:11,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10862 conditions, 1456 events. 783/1456 cut-off events. For 397581/397581 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8246 event pairs, 250 based on Foata normal form. 10/1464 useless extension candidates. Maximal degree in co-relation 10688. Up to 1184 conditions per place. [2024-06-28 00:11:11,684 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 259 selfloop transitions, 58 changer transitions 12/331 dead transitions. [2024-06-28 00:11:11,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 331 transitions, 4115 flow [2024-06-28 00:11:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:11,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 00:11:11,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 00:11:11,685 INFO L175 Difference]: Start difference. First operand has 388 places, 314 transitions, 3405 flow. Second operand 12 states and 129 transitions. [2024-06-28 00:11:11,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 331 transitions, 4115 flow [2024-06-28 00:11:12,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 331 transitions, 3974 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:12,790 INFO L231 Difference]: Finished difference. Result has 390 places, 310 transitions, 3334 flow [2024-06-28 00:11:12,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3334, PETRI_PLACES=390, PETRI_TRANSITIONS=310} [2024-06-28 00:11:12,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-28 00:11:12,791 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 310 transitions, 3334 flow [2024-06-28 00:11:12,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:12,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:12,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:12,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 00:11:12,792 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:12,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1402326785, now seen corresponding path program 33 times [2024-06-28 00:11:12,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:12,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401564740] [2024-06-28 00:11:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:12,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:14,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:14,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401564740] [2024-06-28 00:11:14,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401564740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:14,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592493673] [2024-06-28 00:11:14,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:14,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:14,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:14,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:14,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 310 transitions, 3334 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:14,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:14,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:14,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:15,639 INFO L124 PetriNetUnfolderBase]: 773/1442 cut-off events. [2024-06-28 00:11:15,639 INFO L125 PetriNetUnfolderBase]: For 403206/403206 co-relation queries the response was YES. [2024-06-28 00:11:15,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10771 conditions, 1442 events. 773/1442 cut-off events. For 403206/403206 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8205 event pairs, 241 based on Foata normal form. 10/1450 useless extension candidates. Maximal degree in co-relation 10596. Up to 1326 conditions per place. [2024-06-28 00:11:15,652 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 287 selfloop transitions, 28 changer transitions 12/329 dead transitions. [2024-06-28 00:11:15,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 329 transitions, 4072 flow [2024-06-28 00:11:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 00:11:15,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-28 00:11:15,653 INFO L175 Difference]: Start difference. First operand has 390 places, 310 transitions, 3334 flow. Second operand 12 states and 122 transitions. [2024-06-28 00:11:15,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 329 transitions, 4072 flow [2024-06-28 00:11:16,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 329 transitions, 3907 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:16,780 INFO L231 Difference]: Finished difference. Result has 387 places, 306 transitions, 3183 flow [2024-06-28 00:11:16,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3169, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3183, PETRI_PLACES=387, PETRI_TRANSITIONS=306} [2024-06-28 00:11:16,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:11:16,781 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 306 transitions, 3183 flow [2024-06-28 00:11:16,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:16,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:16,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:16,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 00:11:16,781 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:16,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1330143955, now seen corresponding path program 6 times [2024-06-28 00:11:16,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:16,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875311291] [2024-06-28 00:11:16,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:16,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:18,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:18,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875311291] [2024-06-28 00:11:18,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875311291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:18,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:18,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:18,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182927867] [2024-06-28 00:11:18,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:18,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:18,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:18,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:18,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:18,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:18,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 306 transitions, 3183 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:18,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:18,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:18,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:19,232 INFO L124 PetriNetUnfolderBase]: 751/1400 cut-off events. [2024-06-28 00:11:19,232 INFO L125 PetriNetUnfolderBase]: For 326663/326663 co-relation queries the response was YES. [2024-06-28 00:11:19,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10466 conditions, 1400 events. 751/1400 cut-off events. For 326663/326663 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7901 event pairs, 239 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 10292. Up to 1328 conditions per place. [2024-06-28 00:11:19,256 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 29 changer transitions 0/320 dead transitions. [2024-06-28 00:11:19,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 320 transitions, 3893 flow [2024-06-28 00:11:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:11:19,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:11:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 00:11:19,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 00:11:19,257 INFO L175 Difference]: Start difference. First operand has 387 places, 306 transitions, 3183 flow. Second operand 10 states and 104 transitions. [2024-06-28 00:11:19,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 320 transitions, 3893 flow [2024-06-28 00:11:20,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 320 transitions, 3826 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:20,508 INFO L231 Difference]: Finished difference. Result has 383 places, 307 transitions, 3196 flow [2024-06-28 00:11:20,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3196, PETRI_PLACES=383, PETRI_TRANSITIONS=307} [2024-06-28 00:11:20,509 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-06-28 00:11:20,509 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 307 transitions, 3196 flow [2024-06-28 00:11:20,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:20,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:20,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:20,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 00:11:20,510 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:20,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:20,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1402050079, now seen corresponding path program 7 times [2024-06-28 00:11:20,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:20,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247840334] [2024-06-28 00:11:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:20,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:22,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:22,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247840334] [2024-06-28 00:11:22,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247840334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:22,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:22,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:11:22,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844271875] [2024-06-28 00:11:22,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:22,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:11:22,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:11:22,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:11:22,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:22,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 307 transitions, 3196 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:22,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:22,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:22,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:23,649 INFO L124 PetriNetUnfolderBase]: 762/1421 cut-off events. [2024-06-28 00:11:23,649 INFO L125 PetriNetUnfolderBase]: For 340856/340856 co-relation queries the response was YES. [2024-06-28 00:11:23,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10841 conditions, 1421 events. 762/1421 cut-off events. For 340856/340856 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8059 event pairs, 239 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 10668. Up to 1320 conditions per place. [2024-06-28 00:11:23,664 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 32 changer transitions 0/323 dead transitions. [2024-06-28 00:11:23,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 323 transitions, 4198 flow [2024-06-28 00:11:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 00:11:23,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 00:11:23,665 INFO L175 Difference]: Start difference. First operand has 383 places, 307 transitions, 3196 flow. Second operand 11 states and 111 transitions. [2024-06-28 00:11:23,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 323 transitions, 4198 flow [2024-06-28 00:11:25,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 323 transitions, 4128 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:11:25,025 INFO L231 Difference]: Finished difference. Result has 386 places, 309 transitions, 3232 flow [2024-06-28 00:11:25,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3232, PETRI_PLACES=386, PETRI_TRANSITIONS=309} [2024-06-28 00:11:25,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 00:11:25,026 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 309 transitions, 3232 flow [2024-06-28 00:11:25,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:25,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:25,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:25,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 00:11:25,026 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:25,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2065289049, now seen corresponding path program 34 times [2024-06-28 00:11:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:25,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239132462] [2024-06-28 00:11:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:25,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:27,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:27,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239132462] [2024-06-28 00:11:27,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239132462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:27,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:27,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:27,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899723189] [2024-06-28 00:11:27,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:27,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:27,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:27,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:27,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:27,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 309 transitions, 3232 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:27,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:27,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:27,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:27,891 INFO L124 PetriNetUnfolderBase]: 778/1457 cut-off events. [2024-06-28 00:11:27,891 INFO L125 PetriNetUnfolderBase]: For 422285/422285 co-relation queries the response was YES. [2024-06-28 00:11:27,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10970 conditions, 1457 events. 778/1457 cut-off events. For 422285/422285 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8323 event pairs, 243 based on Foata normal form. 10/1465 useless extension candidates. Maximal degree in co-relation 10796. Up to 1315 conditions per place. [2024-06-28 00:11:27,909 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 276 selfloop transitions, 39 changer transitions 11/328 dead transitions. [2024-06-28 00:11:27,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 328 transitions, 3960 flow [2024-06-28 00:11:27,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 00:11:27,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-28 00:11:27,910 INFO L175 Difference]: Start difference. First operand has 386 places, 309 transitions, 3232 flow. Second operand 12 states and 122 transitions. [2024-06-28 00:11:27,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 328 transitions, 3960 flow [2024-06-28 00:11:29,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 328 transitions, 3901 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:11:29,030 INFO L231 Difference]: Finished difference. Result has 391 places, 306 transitions, 3228 flow [2024-06-28 00:11:29,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3173, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3228, PETRI_PLACES=391, PETRI_TRANSITIONS=306} [2024-06-28 00:11:29,030 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 00:11:29,031 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 306 transitions, 3228 flow [2024-06-28 00:11:29,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:29,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:29,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:29,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 00:11:29,031 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:29,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:29,031 INFO L85 PathProgramCache]: Analyzing trace with hash 316619503, now seen corresponding path program 8 times [2024-06-28 00:11:29,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:29,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323057501] [2024-06-28 00:11:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:31,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:31,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323057501] [2024-06-28 00:11:31,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323057501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:31,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:31,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:31,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212526922] [2024-06-28 00:11:31,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:31,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:31,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:31,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:31,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:31,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:31,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 306 transitions, 3228 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:31,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:31,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:31,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:31,759 INFO L124 PetriNetUnfolderBase]: 758/1417 cut-off events. [2024-06-28 00:11:31,759 INFO L125 PetriNetUnfolderBase]: For 350990/350990 co-relation queries the response was YES. [2024-06-28 00:11:31,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10909 conditions, 1417 events. 758/1417 cut-off events. For 350990/350990 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8047 event pairs, 240 based on Foata normal form. 2/1417 useless extension candidates. Maximal degree in co-relation 10733. Up to 1304 conditions per place. [2024-06-28 00:11:31,775 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 43 changer transitions 0/320 dead transitions. [2024-06-28 00:11:31,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 320 transitions, 3942 flow [2024-06-28 00:11:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 00:11:31,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 00:11:31,776 INFO L175 Difference]: Start difference. First operand has 391 places, 306 transitions, 3228 flow. Second operand 11 states and 113 transitions. [2024-06-28 00:11:31,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 320 transitions, 3942 flow [2024-06-28 00:11:33,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 320 transitions, 3860 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:33,047 INFO L231 Difference]: Finished difference. Result has 388 places, 307 transitions, 3258 flow [2024-06-28 00:11:33,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3258, PETRI_PLACES=388, PETRI_TRANSITIONS=307} [2024-06-28 00:11:33,047 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 00:11:33,047 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 307 transitions, 3258 flow [2024-06-28 00:11:33,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:33,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:33,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:33,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 00:11:33,048 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:33,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1337509121, now seen corresponding path program 35 times [2024-06-28 00:11:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:33,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303872161] [2024-06-28 00:11:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:33,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:34,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:34,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303872161] [2024-06-28 00:11:34,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303872161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:34,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:34,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:34,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041331978] [2024-06-28 00:11:34,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:34,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:34,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:35,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:35,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 307 transitions, 3258 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:35,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:35,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:35,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:35,805 INFO L124 PetriNetUnfolderBase]: 799/1504 cut-off events. [2024-06-28 00:11:35,805 INFO L125 PetriNetUnfolderBase]: For 498407/498407 co-relation queries the response was YES. [2024-06-28 00:11:35,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12496 conditions, 1504 events. 799/1504 cut-off events. For 498407/498407 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8652 event pairs, 254 based on Foata normal form. 8/1510 useless extension candidates. Maximal degree in co-relation 12321. Up to 1238 conditions per place. [2024-06-28 00:11:35,831 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 283 selfloop transitions, 37 changer transitions 8/330 dead transitions. [2024-06-28 00:11:35,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 330 transitions, 4280 flow [2024-06-28 00:11:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 00:11:35,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:11:35,832 INFO L175 Difference]: Start difference. First operand has 388 places, 307 transitions, 3258 flow. Second operand 12 states and 124 transitions. [2024-06-28 00:11:35,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 330 transitions, 4280 flow [2024-06-28 00:11:37,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 330 transitions, 4178 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:11:37,490 INFO L231 Difference]: Finished difference. Result has 391 places, 304 transitions, 3197 flow [2024-06-28 00:11:37,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3156, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3197, PETRI_PLACES=391, PETRI_TRANSITIONS=304} [2024-06-28 00:11:37,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 00:11:37,490 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 304 transitions, 3197 flow [2024-06-28 00:11:37,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:37,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:37,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:37,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 00:11:37,491 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:37,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1337293795, now seen corresponding path program 9 times [2024-06-28 00:11:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:37,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277699533] [2024-06-28 00:11:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:37,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:39,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:39,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277699533] [2024-06-28 00:11:39,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277699533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:39,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:39,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:39,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853171207] [2024-06-28 00:11:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:39,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:39,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:39,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:39,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 304 transitions, 3197 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:39,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:39,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:39,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:40,145 INFO L124 PetriNetUnfolderBase]: 777/1458 cut-off events. [2024-06-28 00:11:40,145 INFO L125 PetriNetUnfolderBase]: For 428081/428081 co-relation queries the response was YES. [2024-06-28 00:11:40,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12063 conditions, 1458 events. 777/1458 cut-off events. For 428081/428081 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8332 event pairs, 265 based on Foata normal form. 2/1458 useless extension candidates. Maximal degree in co-relation 11887. Up to 1402 conditions per place. [2024-06-28 00:11:40,163 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 285 selfloop transitions, 28 changer transitions 0/315 dead transitions. [2024-06-28 00:11:40,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 315 transitions, 3857 flow [2024-06-28 00:11:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 00:11:40,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 00:11:40,164 INFO L175 Difference]: Start difference. First operand has 391 places, 304 transitions, 3197 flow. Second operand 11 states and 109 transitions. [2024-06-28 00:11:40,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 315 transitions, 3857 flow [2024-06-28 00:11:41,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 315 transitions, 3775 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:41,572 INFO L231 Difference]: Finished difference. Result has 387 places, 304 transitions, 3175 flow [2024-06-28 00:11:41,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3175, PETRI_PLACES=387, PETRI_TRANSITIONS=304} [2024-06-28 00:11:41,572 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:11:41,572 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 304 transitions, 3175 flow [2024-06-28 00:11:41,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:41,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:41,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:41,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 00:11:41,573 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:41,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash 388786461, now seen corresponding path program 36 times [2024-06-28 00:11:41,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:41,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717400849] [2024-06-28 00:11:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:41,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:43,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717400849] [2024-06-28 00:11:43,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717400849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:43,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:43,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:43,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395158228] [2024-06-28 00:11:43,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:43,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:43,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:43,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:43,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:43,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 304 transitions, 3175 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:43,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:43,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:43,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:44,941 INFO L124 PetriNetUnfolderBase]: 793/1494 cut-off events. [2024-06-28 00:11:44,941 INFO L125 PetriNetUnfolderBase]: For 490907/490907 co-relation queries the response was YES. [2024-06-28 00:11:44,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12057 conditions, 1494 events. 793/1494 cut-off events. For 490907/490907 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8618 event pairs, 264 based on Foata normal form. 10/1502 useless extension candidates. Maximal degree in co-relation 11883. Up to 1337 conditions per place. [2024-06-28 00:11:44,967 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 270 selfloop transitions, 39 changer transitions 12/323 dead transitions. [2024-06-28 00:11:44,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 323 transitions, 3901 flow [2024-06-28 00:11:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 00:11:44,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 00:11:44,968 INFO L175 Difference]: Start difference. First operand has 387 places, 304 transitions, 3175 flow. Second operand 12 states and 125 transitions. [2024-06-28 00:11:44,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 323 transitions, 3901 flow [2024-06-28 00:11:46,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 323 transitions, 3839 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:46,491 INFO L231 Difference]: Finished difference. Result has 389 places, 300 transitions, 3151 flow [2024-06-28 00:11:46,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3151, PETRI_PLACES=389, PETRI_TRANSITIONS=300} [2024-06-28 00:11:46,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 00:11:46,491 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 300 transitions, 3151 flow [2024-06-28 00:11:46,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:46,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:46,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:46,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 00:11:46,491 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:46,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash 389063167, now seen corresponding path program 10 times [2024-06-28 00:11:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73677709] [2024-06-28 00:11:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:46,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:48,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:48,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73677709] [2024-06-28 00:11:48,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73677709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:48,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:48,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:48,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010811917] [2024-06-28 00:11:48,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:48,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:49,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:49,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 300 transitions, 3151 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:49,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:49,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:49,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:49,670 INFO L124 PetriNetUnfolderBase]: 778/1465 cut-off events. [2024-06-28 00:11:49,670 INFO L125 PetriNetUnfolderBase]: For 441331/441331 co-relation queries the response was YES. [2024-06-28 00:11:49,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12358 conditions, 1465 events. 778/1465 cut-off events. For 441331/441331 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8412 event pairs, 259 based on Foata normal form. 2/1465 useless extension candidates. Maximal degree in co-relation 12183. Up to 1327 conditions per place. [2024-06-28 00:11:49,684 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 273 selfloop transitions, 41 changer transitions 0/316 dead transitions. [2024-06-28 00:11:49,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 316 transitions, 4149 flow [2024-06-28 00:11:49,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 00:11:49,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 00:11:49,685 INFO L175 Difference]: Start difference. First operand has 389 places, 300 transitions, 3151 flow. Second operand 11 states and 114 transitions. [2024-06-28 00:11:49,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 316 transitions, 4149 flow [2024-06-28 00:11:50,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 316 transitions, 4063 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:50,978 INFO L231 Difference]: Finished difference. Result has 386 places, 302 transitions, 3201 flow [2024-06-28 00:11:50,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3069, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3201, PETRI_PLACES=386, PETRI_TRANSITIONS=302} [2024-06-28 00:11:50,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 00:11:50,978 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 302 transitions, 3201 flow [2024-06-28 00:11:50,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:50,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:50,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:50,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 00:11:50,978 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:50,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash 381434811, now seen corresponding path program 37 times [2024-06-28 00:11:50,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:50,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122612683] [2024-06-28 00:11:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:50,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:53,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:53,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122612683] [2024-06-28 00:11:53,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122612683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:53,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:53,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:53,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125883106] [2024-06-28 00:11:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:53,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:53,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:53,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:53,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 302 transitions, 3201 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:53,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:53,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:53,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:53,919 INFO L124 PetriNetUnfolderBase]: 794/1501 cut-off events. [2024-06-28 00:11:53,920 INFO L125 PetriNetUnfolderBase]: For 510325/510325 co-relation queries the response was YES. [2024-06-28 00:11:53,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12433 conditions, 1501 events. 794/1501 cut-off events. For 510325/510325 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8703 event pairs, 265 based on Foata normal form. 10/1509 useless extension candidates. Maximal degree in co-relation 12259. Up to 1335 conditions per place. [2024-06-28 00:11:53,938 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 269 selfloop transitions, 40 changer transitions 11/322 dead transitions. [2024-06-28 00:11:53,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 322 transitions, 3929 flow [2024-06-28 00:11:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 00:11:53,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 00:11:53,939 INFO L175 Difference]: Start difference. First operand has 386 places, 302 transitions, 3201 flow. Second operand 12 states and 128 transitions. [2024-06-28 00:11:53,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 322 transitions, 3929 flow [2024-06-28 00:11:55,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 322 transitions, 3852 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:11:55,314 INFO L231 Difference]: Finished difference. Result has 391 places, 299 transitions, 3187 flow [2024-06-28 00:11:55,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3187, PETRI_PLACES=391, PETRI_TRANSITIONS=299} [2024-06-28 00:11:55,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 00:11:55,314 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 299 transitions, 3187 flow [2024-06-28 00:11:55,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:55,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:55,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:55,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 00:11:55,314 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:55,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1409476625, now seen corresponding path program 38 times [2024-06-28 00:11:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:55,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461399808] [2024-06-28 00:11:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:57,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:57,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461399808] [2024-06-28 00:11:57,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461399808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:57,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:57,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:57,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75447262] [2024-06-28 00:11:57,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:57,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:57,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:57,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:57,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:57,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:57,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 299 transitions, 3187 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:57,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:57,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:57,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:58,247 INFO L124 PetriNetUnfolderBase]: 779/1476 cut-off events. [2024-06-28 00:11:58,248 INFO L125 PetriNetUnfolderBase]: For 498415/498415 co-relation queries the response was YES. [2024-06-28 00:11:58,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12110 conditions, 1476 events. 779/1476 cut-off events. For 498415/498415 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8542 event pairs, 263 based on Foata normal form. 10/1484 useless extension candidates. Maximal degree in co-relation 11934. Up to 1354 conditions per place. [2024-06-28 00:11:58,266 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 274 selfloop transitions, 30 changer transitions 12/318 dead transitions. [2024-06-28 00:11:58,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 318 transitions, 3903 flow [2024-06-28 00:11:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 00:11:58,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-28 00:11:58,277 INFO L175 Difference]: Start difference. First operand has 391 places, 299 transitions, 3187 flow. Second operand 12 states and 121 transitions. [2024-06-28 00:11:58,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 318 transitions, 3903 flow [2024-06-28 00:11:59,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 318 transitions, 3819 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:59,780 INFO L231 Difference]: Finished difference. Result has 389 places, 295 transitions, 3117 flow [2024-06-28 00:11:59,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3103, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3117, PETRI_PLACES=389, PETRI_TRANSITIONS=295} [2024-06-28 00:11:59,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 00:11:59,780 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 295 transitions, 3117 flow [2024-06-28 00:11:59,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:59,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:59,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:59,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 00:11:59,781 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:59,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1152976115, now seen corresponding path program 39 times [2024-06-28 00:11:59,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:59,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442617819] [2024-06-28 00:11:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:01,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442617819] [2024-06-28 00:12:01,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442617819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:01,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:01,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:01,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850676860] [2024-06-28 00:12:01,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:01,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:01,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:01,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:01,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:01,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:01,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 295 transitions, 3117 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:01,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:01,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:01,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:02,252 INFO L124 PetriNetUnfolderBase]: 730/1385 cut-off events. [2024-06-28 00:12:02,252 INFO L125 PetriNetUnfolderBase]: For 397237/397237 co-relation queries the response was YES. [2024-06-28 00:12:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9289 conditions, 1385 events. 730/1385 cut-off events. For 397237/397237 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7950 event pairs, 236 based on Foata normal form. 18/1401 useless extension candidates. Maximal degree in co-relation 9114. Up to 1254 conditions per place. [2024-06-28 00:12:02,270 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 273 selfloop transitions, 21 changer transitions 15/311 dead transitions. [2024-06-28 00:12:02,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 311 transitions, 3783 flow [2024-06-28 00:12:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-28 00:12:02,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-28 00:12:02,271 INFO L175 Difference]: Start difference. First operand has 389 places, 295 transitions, 3117 flow. Second operand 12 states and 117 transitions. [2024-06-28 00:12:02,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 311 transitions, 3783 flow [2024-06-28 00:12:03,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 311 transitions, 3719 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:03,165 INFO L231 Difference]: Finished difference. Result has 387 places, 288 transitions, 2999 flow [2024-06-28 00:12:03,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2999, PETRI_PLACES=387, PETRI_TRANSITIONS=288} [2024-06-28 00:12:03,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:12:03,165 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 288 transitions, 2999 flow [2024-06-28 00:12:03,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:03,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:03,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:03,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 00:12:03,165 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:03,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:03,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1972967991, now seen corresponding path program 11 times [2024-06-28 00:12:03,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:03,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210678922] [2024-06-28 00:12:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:05,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:05,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210678922] [2024-06-28 00:12:05,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210678922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:05,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:05,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:05,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140550755] [2024-06-28 00:12:05,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:05,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:05,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:05,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:05,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 288 transitions, 2999 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:05,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:05,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:05,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:05,897 INFO L124 PetriNetUnfolderBase]: 692/1311 cut-off events. [2024-06-28 00:12:05,897 INFO L125 PetriNetUnfolderBase]: For 243451/243451 co-relation queries the response was YES. [2024-06-28 00:12:05,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8994 conditions, 1311 events. 692/1311 cut-off events. For 243451/243451 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7449 event pairs, 230 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 8820. Up to 1262 conditions per place. [2024-06-28 00:12:05,913 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 277 selfloop transitions, 22 changer transitions 0/301 dead transitions. [2024-06-28 00:12:05,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 301 transitions, 3662 flow [2024-06-28 00:12:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 00:12:05,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 00:12:05,914 INFO L175 Difference]: Start difference. First operand has 387 places, 288 transitions, 2999 flow. Second operand 11 states and 106 transitions. [2024-06-28 00:12:05,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 301 transitions, 3662 flow [2024-06-28 00:12:06,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 301 transitions, 3580 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 00:12:06,789 INFO L231 Difference]: Finished difference. Result has 380 places, 290 transitions, 3013 flow [2024-06-28 00:12:06,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3013, PETRI_PLACES=380, PETRI_TRANSITIONS=290} [2024-06-28 00:12:06,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-28 00:12:06,789 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 290 transitions, 3013 flow [2024-06-28 00:12:06,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:06,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:06,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:06,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 00:12:06,790 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:06,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:06,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1973888513, now seen corresponding path program 12 times [2024-06-28 00:12:06,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:06,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452451746] [2024-06-28 00:12:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:06,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:08,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:08,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452451746] [2024-06-28 00:12:08,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452451746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:08,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:08,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:08,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905143207] [2024-06-28 00:12:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:08,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:08,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:08,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:08,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:08,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:08,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 290 transitions, 3013 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:08,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:08,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:08,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:09,254 INFO L124 PetriNetUnfolderBase]: 711/1348 cut-off events. [2024-06-28 00:12:09,254 INFO L125 PetriNetUnfolderBase]: For 258794/258794 co-relation queries the response was YES. [2024-06-28 00:12:09,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9454 conditions, 1348 events. 711/1348 cut-off events. For 258794/258794 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7743 event pairs, 232 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 9282. Up to 1278 conditions per place. [2024-06-28 00:12:09,271 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 282 selfloop transitions, 22 changer transitions 0/306 dead transitions. [2024-06-28 00:12:09,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 306 transitions, 4000 flow [2024-06-28 00:12:09,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 00:12:09,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 00:12:09,272 INFO L175 Difference]: Start difference. First operand has 380 places, 290 transitions, 3013 flow. Second operand 11 states and 106 transitions. [2024-06-28 00:12:09,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 306 transitions, 4000 flow [2024-06-28 00:12:10,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 306 transitions, 3911 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 00:12:10,239 INFO L231 Difference]: Finished difference. Result has 384 places, 294 transitions, 3067 flow [2024-06-28 00:12:10,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3067, PETRI_PLACES=384, PETRI_TRANSITIONS=294} [2024-06-28 00:12:10,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-28 00:12:10,239 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 294 transitions, 3067 flow [2024-06-28 00:12:10,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:10,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:10,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:10,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 00:12:10,240 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:10,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:10,240 INFO L85 PathProgramCache]: Analyzing trace with hash 381429231, now seen corresponding path program 40 times [2024-06-28 00:12:10,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:10,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012767974] [2024-06-28 00:12:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:10,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:12,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:12,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012767974] [2024-06-28 00:12:12,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012767974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:12,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:12,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:12,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831116648] [2024-06-28 00:12:12,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:12,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:12,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:12,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:12,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:12,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 294 transitions, 3067 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:12,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:12,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:12,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:12,998 INFO L124 PetriNetUnfolderBase]: 752/1435 cut-off events. [2024-06-28 00:12:12,998 INFO L125 PetriNetUnfolderBase]: For 410485/410485 co-relation queries the response was YES. [2024-06-28 00:12:13,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11018 conditions, 1435 events. 752/1435 cut-off events. For 410485/410485 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8328 event pairs, 247 based on Foata normal form. 8/1441 useless extension candidates. Maximal degree in co-relation 10844. Up to 1213 conditions per place. [2024-06-28 00:12:13,017 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 273 selfloop transitions, 35 changer transitions 8/318 dead transitions. [2024-06-28 00:12:13,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 318 transitions, 4073 flow [2024-06-28 00:12:13,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 00:12:13,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 00:12:13,018 INFO L175 Difference]: Start difference. First operand has 384 places, 294 transitions, 3067 flow. Second operand 12 states and 129 transitions. [2024-06-28 00:12:13,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 318 transitions, 4073 flow [2024-06-28 00:12:14,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 318 transitions, 4010 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:12:14,250 INFO L231 Difference]: Finished difference. Result has 389 places, 291 transitions, 3049 flow [2024-06-28 00:12:14,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3004, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3049, PETRI_PLACES=389, PETRI_TRANSITIONS=291} [2024-06-28 00:12:14,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 00:12:14,251 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 291 transitions, 3049 flow [2024-06-28 00:12:14,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:14,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:14,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:14,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 00:12:14,251 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:14,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:14,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1080533815, now seen corresponding path program 13 times [2024-06-28 00:12:14,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:14,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559489067] [2024-06-28 00:12:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:14,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:16,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:16,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559489067] [2024-06-28 00:12:16,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559489067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:16,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:16,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:16,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853765267] [2024-06-28 00:12:16,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:16,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:16,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:16,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:16,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:16,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:16,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 291 transitions, 3049 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:16,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:16,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:16,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:16,772 INFO L124 PetriNetUnfolderBase]: 730/1389 cut-off events. [2024-06-28 00:12:16,772 INFO L125 PetriNetUnfolderBase]: For 341049/341049 co-relation queries the response was YES. [2024-06-28 00:12:16,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10607 conditions, 1389 events. 730/1389 cut-off events. For 341049/341049 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8010 event pairs, 239 based on Foata normal form. 2/1389 useless extension candidates. Maximal degree in co-relation 10431. Up to 1324 conditions per place. [2024-06-28 00:12:16,790 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 274 selfloop transitions, 27 changer transitions 0/303 dead transitions. [2024-06-28 00:12:16,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 303 transitions, 3677 flow [2024-06-28 00:12:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:12:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:12:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2024-06-28 00:12:16,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29528535980148884 [2024-06-28 00:12:16,791 INFO L175 Difference]: Start difference. First operand has 389 places, 291 transitions, 3049 flow. Second operand 13 states and 119 transitions. [2024-06-28 00:12:16,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 303 transitions, 3677 flow [2024-06-28 00:12:18,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 303 transitions, 3591 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-28 00:12:18,077 INFO L231 Difference]: Finished difference. Result has 387 places, 291 transitions, 3025 flow [2024-06-28 00:12:18,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3025, PETRI_PLACES=387, PETRI_TRANSITIONS=291} [2024-06-28 00:12:18,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:12:18,078 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 291 transitions, 3025 flow [2024-06-28 00:12:18,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:18,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:18,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:18,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 00:12:18,078 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:18,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1649147393, now seen corresponding path program 14 times [2024-06-28 00:12:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:18,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152874451] [2024-06-28 00:12:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:20,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:20,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152874451] [2024-06-28 00:12:20,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152874451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:20,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:20,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714229215] [2024-06-28 00:12:20,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:20,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:20,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:20,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:20,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:20,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:20,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 291 transitions, 3025 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:20,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:20,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:20,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:20,571 INFO L124 PetriNetUnfolderBase]: 734/1397 cut-off events. [2024-06-28 00:12:20,572 INFO L125 PetriNetUnfolderBase]: For 331250/331250 co-relation queries the response was YES. [2024-06-28 00:12:20,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10587 conditions, 1397 events. 734/1397 cut-off events. For 331250/331250 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8067 event pairs, 237 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 10413. Up to 1349 conditions per place. [2024-06-28 00:12:20,590 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 17 changer transitions 0/304 dead transitions. [2024-06-28 00:12:20,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 304 transitions, 3683 flow [2024-06-28 00:12:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:12:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:12:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 00:12:20,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-28 00:12:20,591 INFO L175 Difference]: Start difference. First operand has 387 places, 291 transitions, 3025 flow. Second operand 10 states and 97 transitions. [2024-06-28 00:12:20,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 304 transitions, 3683 flow [2024-06-28 00:12:21,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 304 transitions, 3607 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-28 00:12:21,842 INFO L231 Difference]: Finished difference. Result has 384 places, 292 transitions, 3017 flow [2024-06-28 00:12:21,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2949, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3017, PETRI_PLACES=384, PETRI_TRANSITIONS=292} [2024-06-28 00:12:21,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-28 00:12:21,842 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 292 transitions, 3017 flow [2024-06-28 00:12:21,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:21,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:21,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:21,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 00:12:21,843 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:21,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:21,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1071587215, now seen corresponding path program 15 times [2024-06-28 00:12:21,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:21,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426244269] [2024-06-28 00:12:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:21,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:23,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:23,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426244269] [2024-06-28 00:12:23,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426244269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:23,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:23,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:23,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467687030] [2024-06-28 00:12:23,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:23,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:23,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:23,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:23,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:23,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 292 transitions, 3017 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:23,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:23,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:23,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:24,027 INFO L124 PetriNetUnfolderBase]: 738/1405 cut-off events. [2024-06-28 00:12:24,027 INFO L125 PetriNetUnfolderBase]: For 336492/336492 co-relation queries the response was YES. [2024-06-28 00:12:24,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10666 conditions, 1405 events. 738/1405 cut-off events. For 336492/336492 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8132 event pairs, 239 based on Foata normal form. 2/1405 useless extension candidates. Maximal degree in co-relation 10491. Up to 1312 conditions per place. [2024-06-28 00:12:24,045 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 276 selfloop transitions, 26 changer transitions 0/304 dead transitions. [2024-06-28 00:12:24,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 304 transitions, 3675 flow [2024-06-28 00:12:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-28 00:12:24,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-28 00:12:24,046 INFO L175 Difference]: Start difference. First operand has 384 places, 292 transitions, 3017 flow. Second operand 11 states and 105 transitions. [2024-06-28 00:12:24,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 304 transitions, 3675 flow [2024-06-28 00:12:25,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 304 transitions, 3617 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:12:25,250 INFO L231 Difference]: Finished difference. Result has 387 places, 293 transitions, 3049 flow [2024-06-28 00:12:25,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3049, PETRI_PLACES=387, PETRI_TRANSITIONS=293} [2024-06-28 00:12:25,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:12:25,250 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 293 transitions, 3049 flow [2024-06-28 00:12:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:25,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:25,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:25,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 00:12:25,250 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:25,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:25,251 INFO L85 PathProgramCache]: Analyzing trace with hash 309469663, now seen corresponding path program 16 times [2024-06-28 00:12:25,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:25,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656756835] [2024-06-28 00:12:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:25,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:27,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:27,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656756835] [2024-06-28 00:12:27,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656756835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:27,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:27,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:12:27,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429919140] [2024-06-28 00:12:27,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:27,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:12:27,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:12:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:12:27,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:27,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 293 transitions, 3049 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:27,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:27,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:27,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:28,368 INFO L124 PetriNetUnfolderBase]: 742/1413 cut-off events. [2024-06-28 00:12:28,369 INFO L125 PetriNetUnfolderBase]: For 341472/341472 co-relation queries the response was YES. [2024-06-28 00:12:28,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10737 conditions, 1413 events. 742/1413 cut-off events. For 341472/341472 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8211 event pairs, 256 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 10561. Up to 1299 conditions per place. [2024-06-28 00:12:28,387 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 271 selfloop transitions, 35 changer transitions 0/308 dead transitions. [2024-06-28 00:12:28,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 308 transitions, 3747 flow [2024-06-28 00:12:28,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 00:12:28,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 00:12:28,389 INFO L175 Difference]: Start difference. First operand has 387 places, 293 transitions, 3049 flow. Second operand 11 states and 113 transitions. [2024-06-28 00:12:28,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 308 transitions, 3747 flow [2024-06-28 00:12:29,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 308 transitions, 3669 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 00:12:29,478 INFO L231 Difference]: Finished difference. Result has 388 places, 294 transitions, 3063 flow [2024-06-28 00:12:29,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3063, PETRI_PLACES=388, PETRI_TRANSITIONS=294} [2024-06-28 00:12:29,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 00:12:29,478 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 294 transitions, 3063 flow [2024-06-28 00:12:29,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:29,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:29,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:29,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-28 00:12:29,479 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:29,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:29,479 INFO L85 PathProgramCache]: Analyzing trace with hash 309461727, now seen corresponding path program 41 times [2024-06-28 00:12:29,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:29,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806601123] [2024-06-28 00:12:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:29,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:31,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:31,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806601123] [2024-06-28 00:12:31,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806601123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:31,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:31,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:31,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760047057] [2024-06-28 00:12:31,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:31,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:31,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:31,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:31,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:31,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:31,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 294 transitions, 3063 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:31,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:31,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:32,162 INFO L124 PetriNetUnfolderBase]: 729/1390 cut-off events. [2024-06-28 00:12:32,162 INFO L125 PetriNetUnfolderBase]: For 322377/322377 co-relation queries the response was YES. [2024-06-28 00:12:32,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9277 conditions, 1390 events. 729/1390 cut-off events. For 322377/322377 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8067 event pairs, 235 based on Foata normal form. 10/1398 useless extension candidates. Maximal degree in co-relation 9101. Up to 1232 conditions per place. [2024-06-28 00:12:32,179 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 268 selfloop transitions, 32 changer transitions 12/314 dead transitions. [2024-06-28 00:12:32,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 314 transitions, 3783 flow [2024-06-28 00:12:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 00:12:32,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 00:12:32,181 INFO L175 Difference]: Start difference. First operand has 388 places, 294 transitions, 3063 flow. Second operand 12 states and 125 transitions. [2024-06-28 00:12:32,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 314 transitions, 3783 flow [2024-06-28 00:12:33,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 314 transitions, 3703 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:12:33,053 INFO L231 Difference]: Finished difference. Result has 391 places, 290 transitions, 3007 flow [2024-06-28 00:12:33,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2983, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3007, PETRI_PLACES=391, PETRI_TRANSITIONS=290} [2024-06-28 00:12:33,054 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 00:12:33,054 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 290 transitions, 3007 flow [2024-06-28 00:12:33,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:33,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:33,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:33,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-28 00:12:33,054 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:33,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:33,055 INFO L85 PathProgramCache]: Analyzing trace with hash 187705147, now seen corresponding path program 17 times [2024-06-28 00:12:33,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:33,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526874532] [2024-06-28 00:12:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:33,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:35,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:35,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526874532] [2024-06-28 00:12:35,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526874532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:35,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:35,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:35,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926176581] [2024-06-28 00:12:35,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:35,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:35,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:35,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:35,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:35,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:35,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 290 transitions, 3007 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:35,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:35,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:35,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:36,035 INFO L124 PetriNetUnfolderBase]: 700/1335 cut-off events. [2024-06-28 00:12:36,035 INFO L125 PetriNetUnfolderBase]: For 231654/231654 co-relation queries the response was YES. [2024-06-28 00:12:36,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8792 conditions, 1335 events. 700/1335 cut-off events. For 231654/231654 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7700 event pairs, 230 based on Foata normal form. 2/1335 useless extension candidates. Maximal degree in co-relation 8615. Up to 1221 conditions per place. [2024-06-28 00:12:36,051 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 38 changer transitions 0/301 dead transitions. [2024-06-28 00:12:36,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 301 transitions, 3639 flow [2024-06-28 00:12:36,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 00:12:36,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 00:12:36,052 INFO L175 Difference]: Start difference. First operand has 391 places, 290 transitions, 3007 flow. Second operand 11 states and 111 transitions. [2024-06-28 00:12:36,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 301 transitions, 3639 flow [2024-06-28 00:12:36,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 301 transitions, 3561 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:36,868 INFO L231 Difference]: Finished difference. Result has 387 places, 290 transitions, 3009 flow [2024-06-28 00:12:36,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3009, PETRI_PLACES=387, PETRI_TRANSITIONS=290} [2024-06-28 00:12:36,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:12:36,868 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 290 transitions, 3009 flow [2024-06-28 00:12:36,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:36,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:36,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:36,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-28 00:12:36,869 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:36,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:36,869 INFO L85 PathProgramCache]: Analyzing trace with hash 115522317, now seen corresponding path program 42 times [2024-06-28 00:12:36,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:36,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019150726] [2024-06-28 00:12:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:38,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:38,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019150726] [2024-06-28 00:12:38,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019150726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:38,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:38,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:38,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631506083] [2024-06-28 00:12:38,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:38,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:38,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:38,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:39,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:39,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 290 transitions, 3009 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:39,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:39,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:39,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:39,794 INFO L124 PetriNetUnfolderBase]: 716/1371 cut-off events. [2024-06-28 00:12:39,794 INFO L125 PetriNetUnfolderBase]: For 303495/303495 co-relation queries the response was YES. [2024-06-28 00:12:39,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8863 conditions, 1371 events. 716/1371 cut-off events. For 303495/303495 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7985 event pairs, 240 based on Foata normal form. 10/1379 useless extension candidates. Maximal degree in co-relation 8687. Up to 1213 conditions per place. [2024-06-28 00:12:39,806 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 258 selfloop transitions, 35 changer transitions 12/307 dead transitions. [2024-06-28 00:12:39,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 307 transitions, 3679 flow [2024-06-28 00:12:39,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 00:12:39,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 00:12:39,807 INFO L175 Difference]: Start difference. First operand has 387 places, 290 transitions, 3009 flow. Second operand 12 states and 123 transitions. [2024-06-28 00:12:39,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 307 transitions, 3679 flow [2024-06-28 00:12:40,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 307 transitions, 3593 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:12:40,748 INFO L231 Difference]: Finished difference. Result has 389 places, 286 transitions, 2955 flow [2024-06-28 00:12:40,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2923, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2955, PETRI_PLACES=389, PETRI_TRANSITIONS=286} [2024-06-28 00:12:40,748 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 00:12:40,748 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 286 transitions, 2955 flow [2024-06-28 00:12:40,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:40,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:40,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:40,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-28 00:12:40,748 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:40,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:40,749 INFO L85 PathProgramCache]: Analyzing trace with hash 115320507, now seen corresponding path program 43 times [2024-06-28 00:12:40,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:40,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943995229] [2024-06-28 00:12:40,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:40,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:42,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:42,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943995229] [2024-06-28 00:12:42,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943995229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:42,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:42,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:42,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044795899] [2024-06-28 00:12:42,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:42,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:42,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:42,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:42,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:42,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 286 transitions, 2955 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:42,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:42,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:42,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:43,427 INFO L124 PetriNetUnfolderBase]: 699/1344 cut-off events. [2024-06-28 00:12:43,427 INFO L125 PetriNetUnfolderBase]: For 288616/288616 co-relation queries the response was YES. [2024-06-28 00:12:43,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8474 conditions, 1344 events. 699/1344 cut-off events. For 288616/288616 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7807 event pairs, 239 based on Foata normal form. 10/1352 useless extension candidates. Maximal degree in co-relation 8297. Up to 1185 conditions per place. [2024-06-28 00:12:43,444 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 255 selfloop transitions, 35 changer transitions 11/303 dead transitions. [2024-06-28 00:12:43,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 303 transitions, 3617 flow [2024-06-28 00:12:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 00:12:43,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:12:43,445 INFO L175 Difference]: Start difference. First operand has 389 places, 286 transitions, 2955 flow. Second operand 12 states and 124 transitions. [2024-06-28 00:12:43,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 303 transitions, 3617 flow [2024-06-28 00:12:44,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 303 transitions, 3543 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:44,237 INFO L231 Difference]: Finished difference. Result has 387 places, 283 transitions, 2934 flow [2024-06-28 00:12:44,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2881, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2934, PETRI_PLACES=387, PETRI_TRANSITIONS=283} [2024-06-28 00:12:44,237 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:12:44,237 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 283 transitions, 2934 flow [2024-06-28 00:12:44,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:44,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:44,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:44,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-28 00:12:44,237 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:44,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:44,238 INFO L85 PathProgramCache]: Analyzing trace with hash 187489821, now seen corresponding path program 44 times [2024-06-28 00:12:44,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:44,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682845460] [2024-06-28 00:12:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:44,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:46,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:46,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682845460] [2024-06-28 00:12:46,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682845460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:46,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:46,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:46,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534278777] [2024-06-28 00:12:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:46,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:46,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:46,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:46,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 283 transitions, 2934 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:46,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:46,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:46,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:46,960 INFO L124 PetriNetUnfolderBase]: 665/1278 cut-off events. [2024-06-28 00:12:46,961 INFO L125 PetriNetUnfolderBase]: For 190608/190608 co-relation queries the response was YES. [2024-06-28 00:12:46,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7163 conditions, 1278 events. 665/1278 cut-off events. For 190608/190608 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7383 event pairs, 217 based on Foata normal form. 8/1284 useless extension candidates. Maximal degree in co-relation 6987. Up to 1129 conditions per place. [2024-06-28 00:12:46,975 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 253 selfloop transitions, 33 changer transitions 11/299 dead transitions. [2024-06-28 00:12:46,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 299 transitions, 3580 flow [2024-06-28 00:12:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 00:12:46,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-28 00:12:46,976 INFO L175 Difference]: Start difference. First operand has 387 places, 283 transitions, 2934 flow. Second operand 12 states and 121 transitions. [2024-06-28 00:12:46,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 299 transitions, 3580 flow [2024-06-28 00:12:47,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 299 transitions, 3506 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:47,563 INFO L231 Difference]: Finished difference. Result has 385 places, 280 transitions, 2902 flow [2024-06-28 00:12:47,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2902, PETRI_PLACES=385, PETRI_TRANSITIONS=280} [2024-06-28 00:12:47,563 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-28 00:12:47,563 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 280 transitions, 2902 flow [2024-06-28 00:12:47,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:47,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:47,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:47,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-28 00:12:47,564 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:47,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:47,565 INFO L85 PathProgramCache]: Analyzing trace with hash -54557713, now seen corresponding path program 45 times [2024-06-28 00:12:47,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:47,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368016562] [2024-06-28 00:12:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:47,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:49,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:49,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368016562] [2024-06-28 00:12:49,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368016562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:49,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:49,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:49,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936871879] [2024-06-28 00:12:49,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:49,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:49,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:49,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:49,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:49,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:49,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 280 transitions, 2902 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:49,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:49,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:49,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:50,129 INFO L124 PetriNetUnfolderBase]: 673/1298 cut-off events. [2024-06-28 00:12:50,129 INFO L125 PetriNetUnfolderBase]: For 243360/243360 co-relation queries the response was YES. [2024-06-28 00:12:50,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7988 conditions, 1298 events. 673/1298 cut-off events. For 243360/243360 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7465 event pairs, 96 based on Foata normal form. 8/1304 useless extension candidates. Maximal degree in co-relation 7813. Up to 426 conditions per place. [2024-06-28 00:12:50,144 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 186 selfloop transitions, 99 changer transitions 19/306 dead transitions. [2024-06-28 00:12:50,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 306 transitions, 3854 flow [2024-06-28 00:12:50,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 00:12:50,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 00:12:50,145 INFO L175 Difference]: Start difference. First operand has 385 places, 280 transitions, 2902 flow. Second operand 11 states and 140 transitions. [2024-06-28 00:12:50,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 306 transitions, 3854 flow [2024-06-28 00:12:50,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 306 transitions, 3776 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:50,706 INFO L231 Difference]: Finished difference. Result has 378 places, 274 transitions, 2991 flow [2024-06-28 00:12:50,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2991, PETRI_PLACES=378, PETRI_TRANSITIONS=274} [2024-06-28 00:12:50,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 348 predicate places. [2024-06-28 00:12:50,706 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 274 transitions, 2991 flow [2024-06-28 00:12:50,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:50,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:50,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:50,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-28 00:12:50,706 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:50,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:50,707 INFO L85 PathProgramCache]: Analyzing trace with hash 32283827, now seen corresponding path program 46 times [2024-06-28 00:12:50,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:50,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124890790] [2024-06-28 00:12:50,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:52,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:52,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124890790] [2024-06-28 00:12:52,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124890790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:52,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:52,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:52,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375630112] [2024-06-28 00:12:52,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:52,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:52,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:52,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:52,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 274 transitions, 2991 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:52,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:52,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:52,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:53,347 INFO L124 PetriNetUnfolderBase]: 656/1273 cut-off events. [2024-06-28 00:12:53,347 INFO L125 PetriNetUnfolderBase]: For 254683/254683 co-relation queries the response was YES. [2024-06-28 00:12:53,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8040 conditions, 1273 events. 656/1273 cut-off events. For 254683/254683 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7334 event pairs, 104 based on Foata normal form. 10/1281 useless extension candidates. Maximal degree in co-relation 7867. Up to 746 conditions per place. [2024-06-28 00:12:53,363 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 103 changer transitions 13/295 dead transitions. [2024-06-28 00:12:53,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 295 transitions, 3641 flow [2024-06-28 00:12:53,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 00:12:53,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 00:12:53,364 INFO L175 Difference]: Start difference. First operand has 378 places, 274 transitions, 2991 flow. Second operand 11 states and 138 transitions. [2024-06-28 00:12:53,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 295 transitions, 3641 flow [2024-06-28 00:12:53,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 295 transitions, 3439 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:12:53,830 INFO L231 Difference]: Finished difference. Result has 370 places, 271 transitions, 2980 flow [2024-06-28 00:12:53,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2980, PETRI_PLACES=370, PETRI_TRANSITIONS=271} [2024-06-28 00:12:53,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-28 00:12:53,830 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 271 transitions, 2980 flow [2024-06-28 00:12:53,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:53,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:53,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:53,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-28 00:12:53,830 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:53,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash 670127699, now seen corresponding path program 47 times [2024-06-28 00:12:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:53,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524044475] [2024-06-28 00:12:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:55,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:55,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524044475] [2024-06-28 00:12:55,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524044475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:55,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:55,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:55,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594863836] [2024-06-28 00:12:55,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:55,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:55,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:55,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:55,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 271 transitions, 2980 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:55,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:55,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:55,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:56,244 INFO L124 PetriNetUnfolderBase]: 644/1253 cut-off events. [2024-06-28 00:12:56,244 INFO L125 PetriNetUnfolderBase]: For 226091/226091 co-relation queries the response was YES. [2024-06-28 00:12:56,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7988 conditions, 1253 events. 644/1253 cut-off events. For 226091/226091 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7180 event pairs, 100 based on Foata normal form. 8/1259 useless extension candidates. Maximal degree in co-relation 7820. Up to 736 conditions per place. [2024-06-28 00:12:56,259 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 175 selfloop transitions, 100 changer transitions 14/291 dead transitions. [2024-06-28 00:12:56,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 291 transitions, 3614 flow [2024-06-28 00:12:56,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 00:12:56,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 00:12:56,260 INFO L175 Difference]: Start difference. First operand has 370 places, 271 transitions, 2980 flow. Second operand 11 states and 135 transitions. [2024-06-28 00:12:56,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 291 transitions, 3614 flow [2024-06-28 00:12:56,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 291 transitions, 3404 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:12:56,846 INFO L231 Difference]: Finished difference. Result has 368 places, 267 transitions, 2946 flow [2024-06-28 00:12:56,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2946, PETRI_PLACES=368, PETRI_TRANSITIONS=267} [2024-06-28 00:12:56,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-28 00:12:56,847 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 267 transitions, 2946 flow [2024-06-28 00:12:56,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:56,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:56,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:56,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-28 00:12:56,847 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:56,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash 666408629, now seen corresponding path program 48 times [2024-06-28 00:12:56,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:56,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314232079] [2024-06-28 00:12:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:56,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:58,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314232079] [2024-06-28 00:12:58,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314232079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:58,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:58,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:58,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147368428] [2024-06-28 00:12:58,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:58,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:58,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:58,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:58,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:59,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:59,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 267 transitions, 2946 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:59,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:59,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:59,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:59,626 INFO L124 PetriNetUnfolderBase]: 657/1284 cut-off events. [2024-06-28 00:12:59,626 INFO L125 PetriNetUnfolderBase]: For 290308/290308 co-relation queries the response was YES. [2024-06-28 00:12:59,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9069 conditions, 1284 events. 657/1284 cut-off events. For 290308/290308 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7391 event pairs, 108 based on Foata normal form. 8/1290 useless extension candidates. Maximal degree in co-relation 8902. Up to 688 conditions per place. [2024-06-28 00:12:59,643 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 96 changer transitions 16/293 dead transitions. [2024-06-28 00:12:59,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 293 transitions, 3864 flow [2024-06-28 00:12:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 00:12:59,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-28 00:12:59,644 INFO L175 Difference]: Start difference. First operand has 368 places, 267 transitions, 2946 flow. Second operand 11 states and 142 transitions. [2024-06-28 00:12:59,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 293 transitions, 3864 flow [2024-06-28 00:13:00,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 293 transitions, 3652 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:00,475 INFO L231 Difference]: Finished difference. Result has 364 places, 262 transitions, 2899 flow [2024-06-28 00:13:00,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2899, PETRI_PLACES=364, PETRI_TRANSITIONS=262} [2024-06-28 00:13:00,475 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 00:13:00,475 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 262 transitions, 2899 flow [2024-06-28 00:13:00,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:00,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:00,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:00,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-28 00:13:00,479 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:00,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 669983549, now seen corresponding path program 49 times [2024-06-28 00:13:00,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:00,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420358077] [2024-06-28 00:13:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:00,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:02,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:02,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420358077] [2024-06-28 00:13:02,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420358077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:02,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:02,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:13:02,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516937480] [2024-06-28 00:13:02,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:02,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:13:02,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:02,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:13:02,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:13:02,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:02,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 262 transitions, 2899 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:02,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:02,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:02,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:03,206 INFO L124 PetriNetUnfolderBase]: 619/1210 cut-off events. [2024-06-28 00:13:03,206 INFO L125 PetriNetUnfolderBase]: For 215968/215968 co-relation queries the response was YES. [2024-06-28 00:13:03,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7775 conditions, 1210 events. 619/1210 cut-off events. For 215968/215968 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6914 event pairs, 88 based on Foata normal form. 8/1216 useless extension candidates. Maximal degree in co-relation 7610. Up to 688 conditions per place. [2024-06-28 00:13:03,220 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 165 selfloop transitions, 90 changer transitions 26/283 dead transitions. [2024-06-28 00:13:03,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 283 transitions, 3519 flow [2024-06-28 00:13:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:13:03,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:13:03,221 INFO L175 Difference]: Start difference. First operand has 364 places, 262 transitions, 2899 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:13:03,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 283 transitions, 3519 flow [2024-06-28 00:13:03,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 283 transitions, 3321 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:03,738 INFO L231 Difference]: Finished difference. Result has 359 places, 251 transitions, 2770 flow [2024-06-28 00:13:03,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2770, PETRI_PLACES=359, PETRI_TRANSITIONS=251} [2024-06-28 00:13:03,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-28 00:13:03,738 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 251 transitions, 2770 flow [2024-06-28 00:13:03,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:03,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:03,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:03,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-28 00:13:03,739 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:03,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:03,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1593701741, now seen corresponding path program 50 times [2024-06-28 00:13:03,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:03,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396961237] [2024-06-28 00:13:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:03,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:06,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:06,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396961237] [2024-06-28 00:13:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396961237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:06,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064896007] [2024-06-28 00:13:06,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:06,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:06,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:06,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:06,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 251 transitions, 2770 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:06,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:06,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:06,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:06,829 INFO L124 PetriNetUnfolderBase]: 601/1170 cut-off events. [2024-06-28 00:13:06,830 INFO L125 PetriNetUnfolderBase]: For 221675/221675 co-relation queries the response was YES. [2024-06-28 00:13:06,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7524 conditions, 1170 events. 601/1170 cut-off events. For 221675/221675 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6639 event pairs, 88 based on Foata normal form. 10/1178 useless extension candidates. Maximal degree in co-relation 7362. Up to 805 conditions per place. [2024-06-28 00:13:06,841 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 182 selfloop transitions, 71 changer transitions 13/268 dead transitions. [2024-06-28 00:13:06,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 268 transitions, 3354 flow [2024-06-28 00:13:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:13:06,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:13:06,842 INFO L175 Difference]: Start difference. First operand has 359 places, 251 transitions, 2770 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:13:06,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 268 transitions, 3354 flow [2024-06-28 00:13:07,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 268 transitions, 3082 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-06-28 00:13:07,346 INFO L231 Difference]: Finished difference. Result has 342 places, 247 transitions, 2600 flow [2024-06-28 00:13:07,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2600, PETRI_PLACES=342, PETRI_TRANSITIONS=247} [2024-06-28 00:13:07,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 00:13:07,346 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 247 transitions, 2600 flow [2024-06-28 00:13:07,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:07,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:07,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:07,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-28 00:13:07,347 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:07,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:07,347 INFO L85 PathProgramCache]: Analyzing trace with hash -683300399, now seen corresponding path program 51 times [2024-06-28 00:13:07,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:07,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693486164] [2024-06-28 00:13:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:07,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:09,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:09,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693486164] [2024-06-28 00:13:09,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693486164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:09,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:09,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:09,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957722908] [2024-06-28 00:13:09,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:09,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:09,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:09,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:09,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:09,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:13:09,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 247 transitions, 2600 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:09,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:09,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:13:09,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:10,135 INFO L124 PetriNetUnfolderBase]: 616/1207 cut-off events. [2024-06-28 00:13:10,135 INFO L125 PetriNetUnfolderBase]: For 265968/265968 co-relation queries the response was YES. [2024-06-28 00:13:10,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8576 conditions, 1207 events. 616/1207 cut-off events. For 265968/265968 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6870 event pairs, 93 based on Foata normal form. 8/1213 useless extension candidates. Maximal degree in co-relation 8422. Up to 780 conditions per place. [2024-06-28 00:13:10,147 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 175 selfloop transitions, 86 changer transitions 8/271 dead transitions. [2024-06-28 00:13:10,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 271 transitions, 3454 flow [2024-06-28 00:13:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:13:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:13:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-28 00:13:10,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573200992555831 [2024-06-28 00:13:10,148 INFO L175 Difference]: Start difference. First operand has 342 places, 247 transitions, 2600 flow. Second operand 13 states and 144 transitions. [2024-06-28 00:13:10,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 271 transitions, 3454 flow [2024-06-28 00:13:10,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 271 transitions, 3304 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:10,778 INFO L231 Difference]: Finished difference. Result has 342 places, 245 transitions, 2617 flow [2024-06-28 00:13:10,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2617, PETRI_PLACES=342, PETRI_TRANSITIONS=245} [2024-06-28 00:13:10,778 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 00:13:10,778 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 245 transitions, 2617 flow [2024-06-28 00:13:10,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:10,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:10,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:10,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-28 00:13:10,778 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:10,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:10,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1774492701, now seen corresponding path program 52 times [2024-06-28 00:13:10,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:10,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707866982] [2024-06-28 00:13:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:10,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:13,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:13,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707866982] [2024-06-28 00:13:13,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707866982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:13,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:13,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:13,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996051776] [2024-06-28 00:13:13,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:13,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:13,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:13,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:13,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:13,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:13,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 245 transitions, 2617 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:13,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:13,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:13,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:13,848 INFO L124 PetriNetUnfolderBase]: 585/1146 cut-off events. [2024-06-28 00:13:13,848 INFO L125 PetriNetUnfolderBase]: For 204206/204206 co-relation queries the response was YES. [2024-06-28 00:13:13,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7227 conditions, 1146 events. 585/1146 cut-off events. For 204206/204206 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6489 event pairs, 88 based on Foata normal form. 10/1154 useless extension candidates. Maximal degree in co-relation 7074. Up to 780 conditions per place. [2024-06-28 00:13:13,860 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 178 selfloop transitions, 68 changer transitions 14/262 dead transitions. [2024-06-28 00:13:13,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 262 transitions, 3189 flow [2024-06-28 00:13:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:13:13,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:13:13,861 INFO L175 Difference]: Start difference. First operand has 342 places, 245 transitions, 2617 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:13:13,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 262 transitions, 3189 flow [2024-06-28 00:13:14,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 262 transitions, 3015 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 00:13:14,329 INFO L231 Difference]: Finished difference. Result has 339 places, 241 transitions, 2549 flow [2024-06-28 00:13:14,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2549, PETRI_PLACES=339, PETRI_TRANSITIONS=241} [2024-06-28 00:13:14,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-28 00:13:14,330 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 241 transitions, 2549 flow [2024-06-28 00:13:14,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:14,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:14,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:14,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-28 00:13:14,330 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:14,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:14,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1780004811, now seen corresponding path program 53 times [2024-06-28 00:13:14,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:14,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671919581] [2024-06-28 00:13:14,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:14,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:16,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671919581] [2024-06-28 00:13:16,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671919581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:16,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:16,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:13:16,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676703070] [2024-06-28 00:13:16,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:16,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:13:16,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:16,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:13:16,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:13:16,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:16,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 241 transitions, 2549 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:16,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:16,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:16,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:16,886 INFO L124 PetriNetUnfolderBase]: 601/1182 cut-off events. [2024-06-28 00:13:16,886 INFO L125 PetriNetUnfolderBase]: For 257360/257360 co-relation queries the response was YES. [2024-06-28 00:13:16,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8414 conditions, 1182 events. 601/1182 cut-off events. For 257360/257360 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6703 event pairs, 99 based on Foata normal form. 8/1188 useless extension candidates. Maximal degree in co-relation 8262. Up to 725 conditions per place. [2024-06-28 00:13:16,899 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 70 changer transitions 10/263 dead transitions. [2024-06-28 00:13:16,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 263 transitions, 3379 flow [2024-06-28 00:13:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 00:13:16,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-28 00:13:16,899 INFO L175 Difference]: Start difference. First operand has 339 places, 241 transitions, 2549 flow. Second operand 10 states and 134 transitions. [2024-06-28 00:13:16,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 263 transitions, 3379 flow [2024-06-28 00:13:17,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 263 transitions, 3231 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:17,567 INFO L231 Difference]: Finished difference. Result has 333 places, 239 transitions, 2541 flow [2024-06-28 00:13:17,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2541, PETRI_PLACES=333, PETRI_TRANSITIONS=239} [2024-06-28 00:13:17,567 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-28 00:13:17,567 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 239 transitions, 2541 flow [2024-06-28 00:13:17,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:17,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:17,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:17,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-28 00:13:17,567 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:17,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1779860661, now seen corresponding path program 54 times [2024-06-28 00:13:17,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:17,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226258657] [2024-06-28 00:13:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:17,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:19,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:19,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226258657] [2024-06-28 00:13:19,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226258657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:19,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:19,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:13:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960589807] [2024-06-28 00:13:19,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:19,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:13:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:13:19,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:13:19,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:19,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 239 transitions, 2541 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:19,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:19,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:19,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:20,124 INFO L124 PetriNetUnfolderBase]: 593/1170 cut-off events. [2024-06-28 00:13:20,124 INFO L125 PetriNetUnfolderBase]: For 248982/248982 co-relation queries the response was YES. [2024-06-28 00:13:20,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8326 conditions, 1170 events. 593/1170 cut-off events. For 248982/248982 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6641 event pairs, 95 based on Foata normal form. 8/1176 useless extension candidates. Maximal degree in co-relation 8176. Up to 737 conditions per place. [2024-06-28 00:13:20,136 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 69 changer transitions 8/260 dead transitions. [2024-06-28 00:13:20,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 260 transitions, 3359 flow [2024-06-28 00:13:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:13:20,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:13:20,136 INFO L175 Difference]: Start difference. First operand has 333 places, 239 transitions, 2541 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:13:20,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 260 transitions, 3359 flow [2024-06-28 00:13:20,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 260 transitions, 3211 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:20,682 INFO L231 Difference]: Finished difference. Result has 331 places, 237 transitions, 2526 flow [2024-06-28 00:13:20,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2526, PETRI_PLACES=331, PETRI_TRANSITIONS=237} [2024-06-28 00:13:20,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-28 00:13:20,683 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 237 transitions, 2526 flow [2024-06-28 00:13:20,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:20,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:20,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:20,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-28 00:13:20,683 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:20,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1779855081, now seen corresponding path program 55 times [2024-06-28 00:13:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:20,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055854697] [2024-06-28 00:13:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:22,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:22,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055854697] [2024-06-28 00:13:22,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055854697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:22,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:22,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:13:22,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851094736] [2024-06-28 00:13:22,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:22,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:13:22,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:13:22,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:13:22,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:22,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 237 transitions, 2526 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:22,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:22,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:22,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:23,341 INFO L124 PetriNetUnfolderBase]: 562/1109 cut-off events. [2024-06-28 00:13:23,341 INFO L125 PetriNetUnfolderBase]: For 190924/190924 co-relation queries the response was YES. [2024-06-28 00:13:23,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6971 conditions, 1109 events. 562/1109 cut-off events. For 190924/190924 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6241 event pairs, 86 based on Foata normal form. 10/1117 useless extension candidates. Maximal degree in co-relation 6822. Up to 737 conditions per place. [2024-06-28 00:13:23,353 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 171 selfloop transitions, 65 changer transitions 15/253 dead transitions. [2024-06-28 00:13:23,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 253 transitions, 3078 flow [2024-06-28 00:13:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 00:13:23,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:13:23,354 INFO L175 Difference]: Start difference. First operand has 331 places, 237 transitions, 2526 flow. Second operand 10 states and 125 transitions. [2024-06-28 00:13:23,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 253 transitions, 3078 flow [2024-06-28 00:13:23,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 253 transitions, 2938 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:23,783 INFO L231 Difference]: Finished difference. Result has 330 places, 232 transitions, 2480 flow [2024-06-28 00:13:23,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2386, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2480, PETRI_PLACES=330, PETRI_TRANSITIONS=232} [2024-06-28 00:13:23,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-28 00:13:23,784 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 232 transitions, 2480 flow [2024-06-28 00:13:23,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:23,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:23,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:23,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-28 00:13:23,784 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:23,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1918383231, now seen corresponding path program 56 times [2024-06-28 00:13:23,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:23,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279983832] [2024-06-28 00:13:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:23,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:25,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:25,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279983832] [2024-06-28 00:13:25,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279983832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:25,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:25,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:25,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826109096] [2024-06-28 00:13:25,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:25,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:25,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:26,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:26,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 232 transitions, 2480 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:26,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:26,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:26,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:26,477 INFO L124 PetriNetUnfolderBase]: 550/1085 cut-off events. [2024-06-28 00:13:26,477 INFO L125 PetriNetUnfolderBase]: For 187648/187648 co-relation queries the response was YES. [2024-06-28 00:13:26,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6846 conditions, 1085 events. 550/1085 cut-off events. For 187648/187648 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6067 event pairs, 86 based on Foata normal form. 10/1093 useless extension candidates. Maximal degree in co-relation 6698. Up to 713 conditions per place. [2024-06-28 00:13:26,488 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 167 selfloop transitions, 68 changer transitions 12/249 dead transitions. [2024-06-28 00:13:26,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 249 transitions, 3026 flow [2024-06-28 00:13:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:13:26,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:13:26,489 INFO L175 Difference]: Start difference. First operand has 330 places, 232 transitions, 2480 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:13:26,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 249 transitions, 3026 flow [2024-06-28 00:13:26,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 249 transitions, 2890 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:26,825 INFO L231 Difference]: Finished difference. Result has 326 places, 229 transitions, 2465 flow [2024-06-28 00:13:26,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2465, PETRI_PLACES=326, PETRI_TRANSITIONS=229} [2024-06-28 00:13:26,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-28 00:13:26,825 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 229 transitions, 2465 flow [2024-06-28 00:13:26,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:26,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:26,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:26,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-28 00:13:26,826 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:26,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1922107881, now seen corresponding path program 57 times [2024-06-28 00:13:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:26,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329717090] [2024-06-28 00:13:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:26,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:28,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329717090] [2024-06-28 00:13:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329717090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:28,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:28,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:13:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042518923] [2024-06-28 00:13:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:28,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:13:28,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:28,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:13:28,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:13:29,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:29,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 229 transitions, 2465 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:29,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:29,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:29,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:29,570 INFO L124 PetriNetUnfolderBase]: 560/1111 cut-off events. [2024-06-28 00:13:29,571 INFO L125 PetriNetUnfolderBase]: For 219579/219579 co-relation queries the response was YES. [2024-06-28 00:13:29,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7762 conditions, 1111 events. 560/1111 cut-off events. For 219579/219579 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6219 event pairs, 96 based on Foata normal form. 8/1117 useless extension candidates. Maximal degree in co-relation 7616. Up to 659 conditions per place. [2024-06-28 00:13:29,581 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 65 changer transitions 14/251 dead transitions. [2024-06-28 00:13:29,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 251 transitions, 3253 flow [2024-06-28 00:13:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 00:13:29,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 00:13:29,582 INFO L175 Difference]: Start difference. First operand has 326 places, 229 transitions, 2465 flow. Second operand 11 states and 139 transitions. [2024-06-28 00:13:29,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 251 transitions, 3253 flow [2024-06-28 00:13:30,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 251 transitions, 3109 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:30,133 INFO L231 Difference]: Finished difference. Result has 324 places, 225 transitions, 2435 flow [2024-06-28 00:13:30,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2435, PETRI_PLACES=324, PETRI_TRANSITIONS=225} [2024-06-28 00:13:30,133 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-28 00:13:30,133 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 225 transitions, 2435 flow [2024-06-28 00:13:30,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:30,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:30,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:30,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-28 00:13:30,133 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:30,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:30,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1918532961, now seen corresponding path program 58 times [2024-06-28 00:13:30,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:30,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904105027] [2024-06-28 00:13:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:30,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:32,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:32,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904105027] [2024-06-28 00:13:32,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904105027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:32,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:32,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:13:32,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564145577] [2024-06-28 00:13:32,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:32,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:13:32,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:32,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:13:32,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:13:32,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:32,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 225 transitions, 2435 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:32,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:32,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:32,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:32,887 INFO L124 PetriNetUnfolderBase]: 546/1085 cut-off events. [2024-06-28 00:13:32,888 INFO L125 PetriNetUnfolderBase]: For 215758/215758 co-relation queries the response was YES. [2024-06-28 00:13:32,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7653 conditions, 1085 events. 546/1085 cut-off events. For 215758/215758 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6034 event pairs, 94 based on Foata normal form. 8/1091 useless extension candidates. Maximal degree in co-relation 7508. Up to 659 conditions per place. [2024-06-28 00:13:32,898 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 168 selfloop transitions, 65 changer transitions 11/246 dead transitions. [2024-06-28 00:13:32,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 246 transitions, 3209 flow [2024-06-28 00:13:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:32,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:13:32,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 00:13:32,899 INFO L175 Difference]: Start difference. First operand has 324 places, 225 transitions, 2435 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:13:32,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 246 transitions, 3209 flow [2024-06-28 00:13:33,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 246 transitions, 3065 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:33,300 INFO L231 Difference]: Finished difference. Result has 319 places, 222 transitions, 2414 flow [2024-06-28 00:13:33,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2299, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2414, PETRI_PLACES=319, PETRI_TRANSITIONS=222} [2024-06-28 00:13:33,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-28 00:13:33,301 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 222 transitions, 2414 flow [2024-06-28 00:13:33,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:33,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:33,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:33,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-28 00:13:33,301 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:33,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:33,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1918388811, now seen corresponding path program 59 times [2024-06-28 00:13:33,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:33,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707054782] [2024-06-28 00:13:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:33,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:35,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:35,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707054782] [2024-06-28 00:13:35,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707054782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:35,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:35,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:35,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093419832] [2024-06-28 00:13:35,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:35,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:35,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:35,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:35,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:35,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 222 transitions, 2414 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:35,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:35,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:35,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:35,719 INFO L124 PetriNetUnfolderBase]: 514/1021 cut-off events. [2024-06-28 00:13:35,719 INFO L125 PetriNetUnfolderBase]: For 156931/156931 co-relation queries the response was YES. [2024-06-28 00:13:35,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6534 conditions, 1021 events. 514/1021 cut-off events. For 156931/156931 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5633 event pairs, 76 based on Foata normal form. 8/1027 useless extension candidates. Maximal degree in co-relation 6392. Up to 659 conditions per place. [2024-06-28 00:13:35,730 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 158 selfloop transitions, 62 changer transitions 16/238 dead transitions. [2024-06-28 00:13:35,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 238 transitions, 2930 flow [2024-06-28 00:13:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:13:35,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:13:35,731 INFO L175 Difference]: Start difference. First operand has 319 places, 222 transitions, 2414 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:13:35,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 238 transitions, 2930 flow [2024-06-28 00:13:36,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 238 transitions, 2795 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:36,091 INFO L231 Difference]: Finished difference. Result has 316 places, 217 transitions, 2368 flow [2024-06-28 00:13:36,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2368, PETRI_PLACES=316, PETRI_TRANSITIONS=217} [2024-06-28 00:13:36,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 00:13:36,092 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 217 transitions, 2368 flow [2024-06-28 00:13:36,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:36,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:36,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:36,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-28 00:13:36,093 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:36,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash 207680857, now seen corresponding path program 60 times [2024-06-28 00:13:36,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:36,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946524678] [2024-06-28 00:13:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:36,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:38,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:38,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946524678] [2024-06-28 00:13:38,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946524678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:38,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:38,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:38,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10306950] [2024-06-28 00:13:38,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:38,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:38,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:38,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:38,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:38,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 217 transitions, 2368 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:38,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:38,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:38,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:39,047 INFO L124 PetriNetUnfolderBase]: 505/1002 cut-off events. [2024-06-28 00:13:39,048 INFO L125 PetriNetUnfolderBase]: For 151011/151011 co-relation queries the response was YES. [2024-06-28 00:13:39,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6420 conditions, 1002 events. 505/1002 cut-off events. For 151011/151011 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5474 event pairs, 65 based on Foata normal form. 8/1008 useless extension candidates. Maximal degree in co-relation 6280. Up to 331 conditions per place. [2024-06-28 00:13:39,057 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 124 selfloop transitions, 103 changer transitions 14/243 dead transitions. [2024-06-28 00:13:39,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 243 transitions, 3144 flow [2024-06-28 00:13:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 00:13:39,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-28 00:13:39,058 INFO L175 Difference]: Start difference. First operand has 316 places, 217 transitions, 2368 flow. Second operand 11 states and 141 transitions. [2024-06-28 00:13:39,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 243 transitions, 3144 flow [2024-06-28 00:13:39,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 243 transitions, 3000 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:39,335 INFO L231 Difference]: Finished difference. Result has 306 places, 214 transitions, 2428 flow [2024-06-28 00:13:39,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2428, PETRI_PLACES=306, PETRI_TRANSITIONS=214} [2024-06-28 00:13:39,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-28 00:13:39,336 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 214 transitions, 2428 flow [2024-06-28 00:13:39,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:39,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:39,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:39,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-28 00:13:39,336 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:39,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:39,336 INFO L85 PathProgramCache]: Analyzing trace with hash 702798617, now seen corresponding path program 61 times [2024-06-28 00:13:39,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:39,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428695787] [2024-06-28 00:13:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:39,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:41,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428695787] [2024-06-28 00:13:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428695787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:41,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:41,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:41,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261683237] [2024-06-28 00:13:41,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:41,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:41,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:41,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:41,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:41,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 214 transitions, 2428 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:41,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:41,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:41,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:42,115 INFO L124 PetriNetUnfolderBase]: 522/1041 cut-off events. [2024-06-28 00:13:42,115 INFO L125 PetriNetUnfolderBase]: For 193263/193263 co-relation queries the response was YES. [2024-06-28 00:13:42,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 1041 events. 522/1041 cut-off events. For 193263/193263 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5717 event pairs, 82 based on Foata normal form. 8/1047 useless extension candidates. Maximal degree in co-relation 7443. Up to 512 conditions per place. [2024-06-28 00:13:42,126 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 125 selfloop transitions, 103 changer transitions 12/242 dead transitions. [2024-06-28 00:13:42,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 242 transitions, 3208 flow [2024-06-28 00:13:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 00:13:42,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-28 00:13:42,127 INFO L175 Difference]: Start difference. First operand has 306 places, 214 transitions, 2428 flow. Second operand 11 states and 147 transitions. [2024-06-28 00:13:42,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 242 transitions, 3208 flow [2024-06-28 00:13:42,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 242 transitions, 3015 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:42,511 INFO L231 Difference]: Finished difference. Result has 303 places, 211 transitions, 2432 flow [2024-06-28 00:13:42,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2432, PETRI_PLACES=303, PETRI_TRANSITIONS=211} [2024-06-28 00:13:42,512 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-28 00:13:42,512 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 211 transitions, 2432 flow [2024-06-28 00:13:42,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:42,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:42,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:42,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-28 00:13:42,512 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:42,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash 702942767, now seen corresponding path program 62 times [2024-06-28 00:13:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:42,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233053810] [2024-06-28 00:13:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:44,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233053810] [2024-06-28 00:13:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233053810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:44,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:44,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:44,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76545921] [2024-06-28 00:13:44,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:44,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:44,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:44,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:44,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:44,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 211 transitions, 2432 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:44,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:44,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:44,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:45,108 INFO L124 PetriNetUnfolderBase]: 512/1023 cut-off events. [2024-06-28 00:13:45,109 INFO L125 PetriNetUnfolderBase]: For 185903/185903 co-relation queries the response was YES. [2024-06-28 00:13:45,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7540 conditions, 1023 events. 512/1023 cut-off events. For 185903/185903 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5596 event pairs, 76 based on Foata normal form. 8/1029 useless extension candidates. Maximal degree in co-relation 7406. Up to 512 conditions per place. [2024-06-28 00:13:45,119 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 102 changer transitions 9/238 dead transitions. [2024-06-28 00:13:45,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 238 transitions, 3198 flow [2024-06-28 00:13:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:45,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:45,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 00:13:45,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-28 00:13:45,120 INFO L175 Difference]: Start difference. First operand has 303 places, 211 transitions, 2432 flow. Second operand 10 states and 138 transitions. [2024-06-28 00:13:45,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 238 transitions, 3198 flow [2024-06-28 00:13:45,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 238 transitions, 2983 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:45,509 INFO L231 Difference]: Finished difference. Result has 299 places, 209 transitions, 2416 flow [2024-06-28 00:13:45,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2223, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2416, PETRI_PLACES=299, PETRI_TRANSITIONS=209} [2024-06-28 00:13:45,509 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-28 00:13:45,509 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 209 transitions, 2416 flow [2024-06-28 00:13:45,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:45,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:45,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:45,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-28 00:13:45,510 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:45,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash 702948347, now seen corresponding path program 63 times [2024-06-28 00:13:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:45,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254139166] [2024-06-28 00:13:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:45,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:47,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:47,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254139166] [2024-06-28 00:13:47,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254139166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:47,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:47,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:13:47,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866502235] [2024-06-28 00:13:47,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:47,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:13:47,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:47,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:13:47,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:13:47,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:47,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 209 transitions, 2416 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:47,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:47,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:47,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:48,424 INFO L124 PetriNetUnfolderBase]: 481/962 cut-off events. [2024-06-28 00:13:48,424 INFO L125 PetriNetUnfolderBase]: For 139479/139479 co-relation queries the response was YES. [2024-06-28 00:13:48,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6333 conditions, 962 events. 481/962 cut-off events. For 139479/139479 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5224 event pairs, 67 based on Foata normal form. 10/970 useless extension candidates. Maximal degree in co-relation 6202. Up to 512 conditions per place. [2024-06-28 00:13:48,434 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 113 selfloop transitions, 98 changer transitions 18/231 dead transitions. [2024-06-28 00:13:48,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 231 transitions, 2948 flow [2024-06-28 00:13:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 00:13:48,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 00:13:48,435 INFO L175 Difference]: Start difference. First operand has 299 places, 209 transitions, 2416 flow. Second operand 11 states and 138 transitions. [2024-06-28 00:13:48,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 231 transitions, 2948 flow [2024-06-28 00:13:48,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 231 transitions, 2742 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:48,663 INFO L231 Difference]: Finished difference. Result has 299 places, 203 transitions, 2358 flow [2024-06-28 00:13:48,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2358, PETRI_PLACES=299, PETRI_TRANSITIONS=203} [2024-06-28 00:13:48,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-28 00:13:48,664 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 203 transitions, 2358 flow [2024-06-28 00:13:48,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:48,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:48,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:48,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2024-06-28 00:13:48,664 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:48,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:48,664 INFO L85 PathProgramCache]: Analyzing trace with hash 841326767, now seen corresponding path program 64 times [2024-06-28 00:13:48,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:48,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148639470] [2024-06-28 00:13:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:48,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:50,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:50,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148639470] [2024-06-28 00:13:50,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148639470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:50,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:50,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:13:50,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895403076] [2024-06-28 00:13:50,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:50,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:13:50,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:50,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:13:50,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:13:50,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:50,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 203 transitions, 2358 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:50,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:50,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:50,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:51,025 INFO L124 PetriNetUnfolderBase]: 458/912 cut-off events. [2024-06-28 00:13:51,025 INFO L125 PetriNetUnfolderBase]: For 127075/127075 co-relation queries the response was YES. [2024-06-28 00:13:51,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6082 conditions, 912 events. 458/912 cut-off events. For 127075/127075 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4857 event pairs, 55 based on Foata normal form. 8/918 useless extension candidates. Maximal degree in co-relation 5951. Up to 331 conditions per place. [2024-06-28 00:13:51,034 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 116 selfloop transitions, 97 changer transitions 10/225 dead transitions. [2024-06-28 00:13:51,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 225 transitions, 3068 flow [2024-06-28 00:13:51,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:13:51,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 00:13:51,034 INFO L175 Difference]: Start difference. First operand has 299 places, 203 transitions, 2358 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:13:51,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 225 transitions, 3068 flow [2024-06-28 00:13:51,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 225 transitions, 2838 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:51,253 INFO L231 Difference]: Finished difference. Result has 289 places, 200 transitions, 2315 flow [2024-06-28 00:13:51,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2315, PETRI_PLACES=289, PETRI_TRANSITIONS=200} [2024-06-28 00:13:51,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-28 00:13:51,253 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 200 transitions, 2315 flow [2024-06-28 00:13:51,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:51,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:51,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:51,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2024-06-28 00:13:51,253 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:51,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash 841476497, now seen corresponding path program 65 times [2024-06-28 00:13:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:51,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375774406] [2024-06-28 00:13:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:51,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:53,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375774406] [2024-06-28 00:13:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375774406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:53,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:13:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007939455] [2024-06-28 00:13:53,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:53,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:13:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:53,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:13:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:13:53,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:53,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 200 transitions, 2315 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:53,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:53,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:53,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:53,682 INFO L124 PetriNetUnfolderBase]: 452/902 cut-off events. [2024-06-28 00:13:53,682 INFO L125 PetriNetUnfolderBase]: For 128551/128551 co-relation queries the response was YES. [2024-06-28 00:13:53,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5975 conditions, 902 events. 452/902 cut-off events. For 128551/128551 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4789 event pairs, 65 based on Foata normal form. 10/910 useless extension candidates. Maximal degree in co-relation 5847. Up to 472 conditions per place. [2024-06-28 00:13:53,691 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 96 changer transitions 11/219 dead transitions. [2024-06-28 00:13:53,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 219 transitions, 2813 flow [2024-06-28 00:13:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:13:53,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:13:53,692 INFO L175 Difference]: Start difference. First operand has 289 places, 200 transitions, 2315 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:13:53,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 219 transitions, 2813 flow [2024-06-28 00:13:53,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 219 transitions, 2633 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:53,894 INFO L231 Difference]: Finished difference. Result has 286 places, 197 transitions, 2308 flow [2024-06-28 00:13:53,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2135, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2308, PETRI_PLACES=286, PETRI_TRANSITIONS=197} [2024-06-28 00:13:53,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-28 00:13:53,895 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 197 transitions, 2308 flow [2024-06-28 00:13:53,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:53,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:53,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2024-06-28 00:13:53,895 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:53,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash 846833297, now seen corresponding path program 66 times [2024-06-28 00:13:53,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:53,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338344011] [2024-06-28 00:13:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:53,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:55,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338344011] [2024-06-28 00:13:55,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338344011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:55,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:55,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116970299] [2024-06-28 00:13:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:55,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:55,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:55,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:55,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 197 transitions, 2308 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:55,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:55,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:55,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:56,360 INFO L124 PetriNetUnfolderBase]: 469/941 cut-off events. [2024-06-28 00:13:56,361 INFO L125 PetriNetUnfolderBase]: For 158010/158010 co-relation queries the response was YES. [2024-06-28 00:13:56,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6989 conditions, 941 events. 469/941 cut-off events. For 158010/158010 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5039 event pairs, 74 based on Foata normal form. 8/947 useless extension candidates. Maximal degree in co-relation 6863. Up to 500 conditions per place. [2024-06-28 00:13:56,370 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 127 selfloop transitions, 85 changer transitions 7/221 dead transitions. [2024-06-28 00:13:56,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 221 transitions, 3012 flow [2024-06-28 00:13:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 00:13:56,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-28 00:13:56,371 INFO L175 Difference]: Start difference. First operand has 286 places, 197 transitions, 2308 flow. Second operand 11 states and 141 transitions. [2024-06-28 00:13:56,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 221 transitions, 3012 flow [2024-06-28 00:13:56,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 221 transitions, 2812 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:56,638 INFO L231 Difference]: Finished difference. Result has 285 places, 195 transitions, 2271 flow [2024-06-28 00:13:56,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2271, PETRI_PLACES=285, PETRI_TRANSITIONS=195} [2024-06-28 00:13:56,638 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 00:13:56,638 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 195 transitions, 2271 flow [2024-06-28 00:13:56,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:56,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:56,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:56,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2024-06-28 00:13:56,638 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:56,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:56,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1247470743, now seen corresponding path program 67 times [2024-06-28 00:13:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:56,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818514987] [2024-06-28 00:13:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:56,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:58,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:58,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818514987] [2024-06-28 00:13:58,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818514987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:58,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:58,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195532933] [2024-06-28 00:13:58,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:58,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:58,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:58,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:58,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:58,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:58,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 195 transitions, 2271 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:58,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:58,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:58,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:59,347 INFO L124 PetriNetUnfolderBase]: 467/939 cut-off events. [2024-06-28 00:13:59,348 INFO L125 PetriNetUnfolderBase]: For 163115/163115 co-relation queries the response was YES. [2024-06-28 00:13:59,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6916 conditions, 939 events. 467/939 cut-off events. For 163115/163115 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5056 event pairs, 78 based on Foata normal form. 10/947 useless extension candidates. Maximal degree in co-relation 6791. Up to 565 conditions per place. [2024-06-28 00:13:59,357 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 119 selfloop transitions, 82 changer transitions 12/215 dead transitions. [2024-06-28 00:13:59,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 215 transitions, 2763 flow [2024-06-28 00:13:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 00:13:59,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 00:13:59,357 INFO L175 Difference]: Start difference. First operand has 285 places, 195 transitions, 2271 flow. Second operand 11 states and 138 transitions. [2024-06-28 00:13:59,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 215 transitions, 2763 flow [2024-06-28 00:13:59,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 215 transitions, 2593 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:59,626 INFO L231 Difference]: Finished difference. Result has 284 places, 191 transitions, 2231 flow [2024-06-28 00:13:59,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2231, PETRI_PLACES=284, PETRI_TRANSITIONS=191} [2024-06-28 00:13:59,626 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-28 00:13:59,626 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 191 transitions, 2231 flow [2024-06-28 00:13:59,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:59,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:59,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:59,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2024-06-28 00:13:59,627 INFO L420 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:59,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash 841470917, now seen corresponding path program 68 times [2024-06-28 00:13:59,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:59,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379806650] [2024-06-28 00:13:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:59,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:01,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:01,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379806650] [2024-06-28 00:14:01,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379806650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:01,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:01,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:14:01,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919288322] [2024-06-28 00:14:01,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:01,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:14:01,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:01,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:14:01,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:14:01,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:01,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 191 transitions, 2231 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:01,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:01,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:01,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:02,132 INFO L124 PetriNetUnfolderBase]: 454/916 cut-off events. [2024-06-28 00:14:02,132 INFO L125 PetriNetUnfolderBase]: For 151229/151229 co-relation queries the response was YES. [2024-06-28 00:14:02,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 916 events. 454/916 cut-off events. For 151229/151229 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4896 event pairs, 68 based on Foata normal form. 8/922 useless extension candidates. Maximal degree in co-relation 6663. Up to 505 conditions per place. [2024-06-28 00:14:02,142 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 88 changer transitions 13/209 dead transitions. [2024-06-28 00:14:02,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 209 transitions, 2701 flow [2024-06-28 00:14:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:14:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:14:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 00:14:02,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:14:02,142 INFO L175 Difference]: Start difference. First operand has 284 places, 191 transitions, 2231 flow. Second operand 10 states and 124 transitions. [2024-06-28 00:14:02,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 209 transitions, 2701 flow [2024-06-28 00:14:02,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 209 transitions, 2531 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:14:02,420 INFO L231 Difference]: Finished difference. Result has 279 places, 186 transitions, 2197 flow [2024-06-28 00:14:02,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2197, PETRI_PLACES=279, PETRI_TRANSITIONS=186} [2024-06-28 00:14:02,420 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-28 00:14:02,420 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 186 transitions, 2197 flow [2024-06-28 00:14:02,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:02,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:02,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:02,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2024-06-28 00:14:02,421 INFO L420 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:02,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:02,421 INFO L85 PathProgramCache]: Analyzing trace with hash 847040687, now seen corresponding path program 69 times [2024-06-28 00:14:02,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:02,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38269249] [2024-06-28 00:14:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:02,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:04,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:04,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38269249] [2024-06-28 00:14:04,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38269249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:04,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:04,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:04,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191376276] [2024-06-28 00:14:04,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:04,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:04,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:04,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:04,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:04,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:04,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 186 transitions, 2197 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:04,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:04,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:04,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:05,191 INFO L124 PetriNetUnfolderBase]: 419/847 cut-off events. [2024-06-28 00:14:05,192 INFO L125 PetriNetUnfolderBase]: For 113142/113142 co-relation queries the response was YES. [2024-06-28 00:14:05,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5657 conditions, 847 events. 419/847 cut-off events. For 113142/113142 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4456 event pairs, 65 based on Foata normal form. 10/855 useless extension candidates. Maximal degree in co-relation 5535. Up to 482 conditions per place. [2024-06-28 00:14:05,199 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 113 selfloop transitions, 78 changer transitions 12/205 dead transitions. [2024-06-28 00:14:05,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 205 transitions, 2665 flow [2024-06-28 00:14:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 00:14:05,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:14:05,200 INFO L175 Difference]: Start difference. First operand has 279 places, 186 transitions, 2197 flow. Second operand 11 states and 132 transitions. [2024-06-28 00:14:05,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 205 transitions, 2665 flow [2024-06-28 00:14:05,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 205 transitions, 2470 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:14:05,384 INFO L231 Difference]: Finished difference. Result has 274 places, 182 transitions, 2112 flow [2024-06-28 00:14:05,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2112, PETRI_PLACES=274, PETRI_TRANSITIONS=182} [2024-06-28 00:14:05,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 00:14:05,384 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 182 transitions, 2112 flow [2024-06-28 00:14:05,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:05,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:05,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:05,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2024-06-28 00:14:05,385 INFO L420 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:05,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:05,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1705118761, now seen corresponding path program 70 times [2024-06-28 00:14:05,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:05,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630314582] [2024-06-28 00:14:05,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:05,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15