./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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 00:02:33,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:02:33,829 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:02:33,832 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:02:33,832 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:02:33,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:02:33,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:02:33,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:02:33,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:02:33,847 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:02:33,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:02:33,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:02:33,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:02:33,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:02:33,849 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:02:33,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:02:33,849 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:02:33,850 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:02:33,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:02:33,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:02:33,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:02:33,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:02:33,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:02:33,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:02:33,852 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:02:33,852 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:02:33,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:02:33,852 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:02:33,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:02:33,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:02:33,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:02:33,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:02:33,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:02:33,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:02:33,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:02:33,854 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:02:33,855 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:02:33,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:02:33,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:02:33,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:02:33,856 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:02:33,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:02:33,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:02:33,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:02:34,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:02:34,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:02:34,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:02:34,097 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:02:34,098 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:02:34,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:02:35,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:02:35,416 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:02:35,417 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:02:35,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5678699/ce513d0c74ba45779316bac1a892cf6a/FLAG5f46e1274 [2024-06-28 00:02:35,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5678699/ce513d0c74ba45779316bac1a892cf6a [2024-06-28 00:02:35,476 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:02:35,477 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:02:35,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 00:02:35,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:02:35,542 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:02:35,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:02:35,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:02:35,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:02:35,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:02:35" (1/2) ... [2024-06-28 00:02:35,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404ee848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:35, skipping insertion in model container [2024-06-28 00:02:35,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:02:35" (1/2) ... [2024-06-28 00:02:35,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5e89228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:35, skipping insertion in model container [2024-06-28 00:02:35,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:02:35" (2/2) ... [2024-06-28 00:02:35,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404ee848 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:35, skipping insertion in model container [2024-06-28 00:02:35,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:02:35" (2/2) ... [2024-06-28 00:02:35,555 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:02:35,583 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:02:35,584 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$w_buff0) + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0_used >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0_used >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )y >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0_used >= 0LL) && (1LL + (long long )x$w_buff0_used) - (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:02:35,584 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$w_buff0) + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0_used >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0_used >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )y >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0_used >= 0LL) && (1LL + (long long )x$w_buff0_used) - (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:02:35,585 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:02:35,585 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-28 00:02:35,625 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:02:35,906 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:02:35,917 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:02:36,131 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:02:36,165 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:02:36,166 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:36 WrapperNode [2024-06-28 00:02:36,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:02:36,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:02:36,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:02:36,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:02:36,173 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,198 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,246 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-28 00:02:36,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:02:36,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:02:36,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:02:36,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:02:36,257 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,257 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,261 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,290 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 00:02:36,290 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,290 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,301 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,314 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,318 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,321 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:02:36,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:02:36,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:02:36,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:02:36,340 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 12:02:36" (1/1) ... [2024-06-28 00:02:36,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:02:36,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:02:36,378 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 00:02:36,383 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 00:02:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:02:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:02:36,424 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:02:36,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:02:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:02:36,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:02:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:02:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:02:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:02:36,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:02:36,426 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 00:02:36,556 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:02:36,557 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:02:36,969 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:02:36,969 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:02:37,105 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:02:37,106 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:02:37,106 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:02:37 BoogieIcfgContainer [2024-06-28 00:02:37,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:02:37,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:02:37,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:02:37,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:02:37,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:02:35" (1/4) ... [2024-06-28 00:02:37,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3678d208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:02:37, skipping insertion in model container [2024-06-28 00:02:37,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:02:35" (2/4) ... [2024-06-28 00:02:37,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3678d208 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:02:37, skipping insertion in model container [2024-06-28 00:02:37,114 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 12:02:36" (3/4) ... [2024-06-28 00:02:37,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3678d208 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:02:37, skipping insertion in model container [2024-06-28 00:02:37,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:02:37" (4/4) ... [2024-06-28 00:02:37,117 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:02:37,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:02:37,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:02:37,131 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:02:37,185 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:02:37,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 00:02:37,257 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-28 00:02:37,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:02:37,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:02:37,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 00:02:37,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-28 00:02:37,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:02:37,283 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;@18fdf19e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:02:37,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:02:37,287 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:02:37,287 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:02:37,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:02:37,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:37,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:02:37,288 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 00:02:37,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash 325944614, now seen corresponding path program 1 times [2024-06-28 00:02:37,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:37,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354128827] [2024-06-28 00:02:37,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:37,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:38,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:38,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354128827] [2024-06-28 00:02:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354128827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:38,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:02:38,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096013358] [2024-06-28 00:02:38,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:38,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:02:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:02:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:02:38,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-28 00:02:38,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:38,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:38,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-28 00:02:38,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:38,871 INFO L124 PetriNetUnfolderBase]: 162/306 cut-off events. [2024-06-28 00:02:38,871 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 00:02:38,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 306 events. 162/306 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1107 event pairs, 97 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-28 00:02:38,878 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-28 00:02:38,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 113 flow [2024-06-28 00:02:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:02:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:02:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-28 00:02:38,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-28 00:02:38,889 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 53 transitions. [2024-06-28 00:02:38,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 113 flow [2024-06-28 00:02:38,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:38,893 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-28 00:02:38,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-28 00:02:38,899 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-28 00:02:38,899 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-28 00:02:38,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:38,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:38,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:38,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:02:38,900 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 00:02:38,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:38,901 INFO L85 PathProgramCache]: Analyzing trace with hash -299804411, now seen corresponding path program 1 times [2024-06-28 00:02:38,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:38,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317644822] [2024-06-28 00:02:38,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:38,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:39,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:39,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317644822] [2024-06-28 00:02:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317644822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:39,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:39,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:02:39,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071080851] [2024-06-28 00:02:39,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:39,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:02:39,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:39,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:02:39,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:02:39,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-28 00:02:39,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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 00:02:39,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:39,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-28 00:02:39,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:39,867 INFO L124 PetriNetUnfolderBase]: 159/303 cut-off events. [2024-06-28 00:02:39,867 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-28 00:02:39,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 303 events. 159/303 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1097 event pairs, 79 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 679. Up to 274 conditions per place. [2024-06-28 00:02:39,873 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-28 00:02:39,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 155 flow [2024-06-28 00:02:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:02:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:02:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-28 00:02:39,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-28 00:02:39,876 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 68 transitions. [2024-06-28 00:02:39,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 155 flow [2024-06-28 00:02:39,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:02:39,881 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-28 00:02:39,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-28 00:02:39,881 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-28 00:02:39,882 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-28 00:02:39,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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 00:02:39,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:39,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:39,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:02:39,884 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 00:02:39,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:39,886 INFO L85 PathProgramCache]: Analyzing trace with hash -704001021, now seen corresponding path program 1 times [2024-06-28 00:02:39,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:39,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531304026] [2024-06-28 00:02:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:39,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:40,673 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 00:02:40,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:40,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531304026] [2024-06-28 00:02:40,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531304026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:40,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:40,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:02:40,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070405866] [2024-06-28 00:02:40,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:40,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:02:40,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:40,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:02:40,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:02:40,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-28 00:02:40,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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 00:02:40,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:40,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-28 00:02:40,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:40,854 INFO L124 PetriNetUnfolderBase]: 187/338 cut-off events. [2024-06-28 00:02:40,854 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-28 00:02:40,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 338 events. 187/338 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1201 event pairs, 67 based on Foata normal form. 3/340 useless extension candidates. Maximal degree in co-relation 852. Up to 293 conditions per place. [2024-06-28 00:02:40,857 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 34 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2024-06-28 00:02:40,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 249 flow [2024-06-28 00:02:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:02:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:02:40,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-28 00:02:40,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-28 00:02:40,860 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 85 transitions. [2024-06-28 00:02:40,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 249 flow [2024-06-28 00:02:40,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:40,863 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 160 flow [2024-06-28 00:02:40,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-06-28 00:02:40,864 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-28 00:02:40,864 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 160 flow [2024-06-28 00:02:40,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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 00:02:40,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:40,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:40,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:02:40,865 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 00:02:40,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:40,866 INFO L85 PathProgramCache]: Analyzing trace with hash -210665862, now seen corresponding path program 1 times [2024-06-28 00:02:40,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:40,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202939271] [2024-06-28 00:02:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:40,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:41,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:41,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202939271] [2024-06-28 00:02:41,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202939271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:41,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:41,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:41,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982748708] [2024-06-28 00:02:41,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:41,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:41,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:42,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-28 00:02:42,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:42,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:42,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-28 00:02:42,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:42,162 INFO L124 PetriNetUnfolderBase]: 188/340 cut-off events. [2024-06-28 00:02:42,162 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-28 00:02:42,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 340 events. 188/340 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1187 event pairs, 46 based on Foata normal form. 3/342 useless extension candidates. Maximal degree in co-relation 1026. Up to 282 conditions per place. [2024-06-28 00:02:42,166 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 14 changer transitions 0/55 dead transitions. [2024-06-28 00:02:42,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 334 flow [2024-06-28 00:02:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 00:02:42,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 00:02:42,170 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 160 flow. Second operand 6 states and 100 transitions. [2024-06-28 00:02:42,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 334 flow [2024-06-28 00:02:42,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 330 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 00:02:42,175 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 212 flow [2024-06-28 00:02:42,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 00:02:42,176 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-28 00:02:42,176 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 212 flow [2024-06-28 00:02:42,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:42,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:42,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:42,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:02:42,177 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 00:02:42,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:42,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2059888706, now seen corresponding path program 1 times [2024-06-28 00:02:42,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:42,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916305202] [2024-06-28 00:02:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:42,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:43,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:43,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916305202] [2024-06-28 00:02:43,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916305202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:43,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:43,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:43,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350135885] [2024-06-28 00:02:43,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:43,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:43,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:43,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-28 00:02:43,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 00:02:43,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:43,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-28 00:02:43,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:43,734 INFO L124 PetriNetUnfolderBase]: 189/343 cut-off events. [2024-06-28 00:02:43,735 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-28 00:02:43,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 343 events. 189/343 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1206 event pairs, 24 based on Foata normal form. 6/348 useless extension candidates. Maximal degree in co-relation 1156. Up to 259 conditions per place. [2024-06-28 00:02:43,738 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2024-06-28 00:02:43,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 380 flow [2024-06-28 00:02:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 00:02:43,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 00:02:43,740 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 212 flow. Second operand 7 states and 110 transitions. [2024-06-28 00:02:43,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 380 flow [2024-06-28 00:02:43,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 348 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:02:43,745 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 215 flow [2024-06-28 00:02:43,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-28 00:02:43,750 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-28 00:02:43,750 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 215 flow [2024-06-28 00:02:43,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 00:02:43,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:43,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:43,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:02:43,751 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 00:02:43,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:43,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1384917533, now seen corresponding path program 1 times [2024-06-28 00:02:43,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:43,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409871123] [2024-06-28 00:02:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:43,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:44,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409871123] [2024-06-28 00:02:44,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409871123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:44,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:44,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:02:44,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084381256] [2024-06-28 00:02:44,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:44,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:02:44,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:44,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:02:44,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:02:44,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:44,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:44,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:44,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:44,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:45,034 INFO L124 PetriNetUnfolderBase]: 187/340 cut-off events. [2024-06-28 00:02:45,034 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-28 00:02:45,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 340 events. 187/340 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1200 event pairs, 47 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1202. Up to 329 conditions per place. [2024-06-28 00:02:45,037 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-28 00:02:45,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 321 flow [2024-06-28 00:02:45,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:02:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:02:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-28 00:02:45,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:02:45,038 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 215 flow. Second operand 5 states and 60 transitions. [2024-06-28 00:02:45,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 321 flow [2024-06-28 00:02:45,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 278 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:45,041 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 214 flow [2024-06-28 00:02:45,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-06-28 00:02:45,041 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-28 00:02:45,041 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 214 flow [2024-06-28 00:02:45,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:45,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:45,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:45,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:02:45,042 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 00:02:45,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash -17632073, now seen corresponding path program 1 times [2024-06-28 00:02:45,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625099941] [2024-06-28 00:02:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:45,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:46,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625099941] [2024-06-28 00:02:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625099941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:46,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:46,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:46,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048587786] [2024-06-28 00:02:46,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:46,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:46,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:46,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 00:02:46,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:46,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:46,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:46,602 INFO L124 PetriNetUnfolderBase]: 181/331 cut-off events. [2024-06-28 00:02:46,602 INFO L125 PetriNetUnfolderBase]: For 876/876 co-relation queries the response was YES. [2024-06-28 00:02:46,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 331 events. 181/331 cut-off events. For 876/876 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1146 event pairs, 44 based on Foata normal form. 3/333 useless extension candidates. Maximal degree in co-relation 1137. Up to 311 conditions per place. [2024-06-28 00:02:46,604 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 36 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-28 00:02:46,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 330 flow [2024-06-28 00:02:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:46,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-28 00:02:46,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-28 00:02:46,605 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 214 flow. Second operand 6 states and 71 transitions. [2024-06-28 00:02:46,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 330 flow [2024-06-28 00:02:46,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:46,608 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 239 flow [2024-06-28 00:02:46,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-28 00:02:46,608 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-06-28 00:02:46,609 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 239 flow [2024-06-28 00:02:46,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 00:02:46,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:46,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:46,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:02:46,609 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 00:02:46,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash -546808574, now seen corresponding path program 1 times [2024-06-28 00:02:46,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:46,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526910047] [2024-06-28 00:02:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:46,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:47,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:47,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526910047] [2024-06-28 00:02:47,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526910047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:47,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:47,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:47,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393882009] [2024-06-28 00:02:47,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:47,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:47,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:47,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:47,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 00:02:47,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:47,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:47,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:47,869 INFO L124 PetriNetUnfolderBase]: 204/372 cut-off events. [2024-06-28 00:02:47,870 INFO L125 PetriNetUnfolderBase]: For 1100/1100 co-relation queries the response was YES. [2024-06-28 00:02:47,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 372 events. 204/372 cut-off events. For 1100/1100 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1339 event pairs, 49 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 1372. Up to 333 conditions per place. [2024-06-28 00:02:47,872 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 41 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2024-06-28 00:02:47,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 444 flow [2024-06-28 00:02:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 00:02:47,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-28 00:02:47,874 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 239 flow. Second operand 7 states and 81 transitions. [2024-06-28 00:02:47,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 444 flow [2024-06-28 00:02:47,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 425 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 00:02:47,876 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 324 flow [2024-06-28 00:02:47,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-28 00:02:47,877 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-06-28 00:02:47,877 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 324 flow [2024-06-28 00:02:47,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 00:02:47,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:47,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:47,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:02:47,878 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 00:02:47,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:47,879 INFO L85 PathProgramCache]: Analyzing trace with hash -534088964, now seen corresponding path program 2 times [2024-06-28 00:02:47,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:47,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645919500] [2024-06-28 00:02:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:47,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:48,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:48,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645919500] [2024-06-28 00:02:48,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645919500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:48,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:48,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:48,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781376100] [2024-06-28 00:02:48,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:48,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:48,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:48,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 00:02:48,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:48,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:48,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:48,852 INFO L124 PetriNetUnfolderBase]: 201/367 cut-off events. [2024-06-28 00:02:48,852 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2024-06-28 00:02:48,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 367 events. 201/367 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1308 event pairs, 48 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 1438. Up to 351 conditions per place. [2024-06-28 00:02:48,855 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2024-06-28 00:02:48,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 55 transitions, 452 flow [2024-06-28 00:02:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-28 00:02:48,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 00:02:48,856 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 324 flow. Second operand 7 states and 75 transitions. [2024-06-28 00:02:48,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 55 transitions, 452 flow [2024-06-28 00:02:48,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 441 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:48,861 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 350 flow [2024-06-28 00:02:48,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=350, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-28 00:02:48,863 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-28 00:02:48,863 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 350 flow [2024-06-28 00:02:48,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 00:02:48,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:48,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:48,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:02:48,863 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 00:02:48,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:48,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1732430776, now seen corresponding path program 3 times [2024-06-28 00:02:48,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:48,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785301810] [2024-06-28 00:02:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:48,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:49,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:49,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785301810] [2024-06-28 00:02:49,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785301810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:49,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293023217] [2024-06-28 00:02:49,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:49,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:49,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:49,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:49,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:49,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:49,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 350 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 00:02:49,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:49,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:49,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:50,168 INFO L124 PetriNetUnfolderBase]: 194/354 cut-off events. [2024-06-28 00:02:50,168 INFO L125 PetriNetUnfolderBase]: For 1608/1608 co-relation queries the response was YES. [2024-06-28 00:02:50,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 354 events. 194/354 cut-off events. For 1608/1608 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1237 event pairs, 44 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 1420. Up to 293 conditions per place. [2024-06-28 00:02:50,171 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 40 selfloop transitions, 20 changer transitions 0/62 dead transitions. [2024-06-28 00:02:50,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 515 flow [2024-06-28 00:02:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 00:02:50,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 00:02:50,172 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 350 flow. Second operand 7 states and 87 transitions. [2024-06-28 00:02:50,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 515 flow [2024-06-28 00:02:50,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 494 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:50,178 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 401 flow [2024-06-28 00:02:50,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-06-28 00:02:50,179 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-28 00:02:50,179 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 401 flow [2024-06-28 00:02:50,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 00:02:50,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:50,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:50,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:02:50,180 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 00:02:50,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash 268191758, now seen corresponding path program 1 times [2024-06-28 00:02:50,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:50,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908257069] [2024-06-28 00:02:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:50,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:51,185 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 00:02:51,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908257069] [2024-06-28 00:02:51,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908257069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:51,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:51,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:51,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36532746] [2024-06-28 00:02:51,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:51,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:51,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:51,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:51,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:51,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:51,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 401 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:02:51,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:51,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:51,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:51,423 INFO L124 PetriNetUnfolderBase]: 210/380 cut-off events. [2024-06-28 00:02:51,423 INFO L125 PetriNetUnfolderBase]: For 2114/2114 co-relation queries the response was YES. [2024-06-28 00:02:51,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 380 events. 210/380 cut-off events. For 2114/2114 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1347 event pairs, 50 based on Foata normal form. 2/381 useless extension candidates. Maximal degree in co-relation 1596. Up to 319 conditions per place. [2024-06-28 00:02:51,426 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 48 selfloop transitions, 19 changer transitions 0/69 dead transitions. [2024-06-28 00:02:51,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 617 flow [2024-06-28 00:02:51,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 00:02:51,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 00:02:51,427 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 401 flow. Second operand 7 states and 87 transitions. [2024-06-28 00:02:51,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 617 flow [2024-06-28 00:02:51,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 555 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:51,432 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 427 flow [2024-06-28 00:02:51,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 00:02:51,433 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-28 00:02:51,433 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 427 flow [2024-06-28 00:02:51,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:02:51,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:51,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:51,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:02:51,434 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 00:02:51,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:51,434 INFO L85 PathProgramCache]: Analyzing trace with hash 623349434, now seen corresponding path program 2 times [2024-06-28 00:02:51,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:51,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483277878] [2024-06-28 00:02:51,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:51,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:52,284 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 00:02:52,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483277878] [2024-06-28 00:02:52,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483277878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:52,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:52,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:52,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760326335] [2024-06-28 00:02:52,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:52,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:52,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:52,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:52,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:52,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:52,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:02:52,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:52,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:52,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:52,585 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-28 00:02:52,586 INFO L125 PetriNetUnfolderBase]: For 2372/2372 co-relation queries the response was YES. [2024-06-28 00:02:52,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 385 events. 213/385 cut-off events. For 2372/2372 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1376 event pairs, 48 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 1674. Up to 366 conditions per place. [2024-06-28 00:02:52,588 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 53 selfloop transitions, 12 changer transitions 0/67 dead transitions. [2024-06-28 00:02:52,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 583 flow [2024-06-28 00:02:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 00:02:52,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-28 00:02:52,589 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 427 flow. Second operand 7 states and 78 transitions. [2024-06-28 00:02:52,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 583 flow [2024-06-28 00:02:52,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 569 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:52,593 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 458 flow [2024-06-28 00:02:52,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2024-06-28 00:02:52,594 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-28 00:02:52,594 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 458 flow [2024-06-28 00:02:52,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:02:52,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:52,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:52,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:02:52,595 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 00:02:52,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1954766462, now seen corresponding path program 3 times [2024-06-28 00:02:52,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:52,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279279089] [2024-06-28 00:02:52,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:52,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:53,485 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 00:02:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:53,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279279089] [2024-06-28 00:02:53,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279279089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:53,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:53,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:53,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833424876] [2024-06-28 00:02:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:53,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:53,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:53,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:53,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:53,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:02:53,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:53,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:53,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:53,705 INFO L124 PetriNetUnfolderBase]: 211/382 cut-off events. [2024-06-28 00:02:53,705 INFO L125 PetriNetUnfolderBase]: For 2776/2776 co-relation queries the response was YES. [2024-06-28 00:02:53,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 382 events. 211/382 cut-off events. For 2776/2776 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1356 event pairs, 48 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1720. Up to 357 conditions per place. [2024-06-28 00:02:53,708 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 52 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-28 00:02:53,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 622 flow [2024-06-28 00:02:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 00:02:53,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 00:02:53,709 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 458 flow. Second operand 7 states and 80 transitions. [2024-06-28 00:02:53,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 622 flow [2024-06-28 00:02:53,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 593 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:53,713 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 484 flow [2024-06-28 00:02:53,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-06-28 00:02:53,714 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-28 00:02:53,714 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 484 flow [2024-06-28 00:02:53,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:02:53,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:53,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:53,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:02:53,715 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 00:02:53,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:53,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1630515718, now seen corresponding path program 4 times [2024-06-28 00:02:53,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:53,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391314799] [2024-06-28 00:02:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:53,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:54,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:54,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391314799] [2024-06-28 00:02:54,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391314799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:54,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:54,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971157157] [2024-06-28 00:02:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:55,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:55,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:02:55,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:55,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:55,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:55,403 INFO L124 PetriNetUnfolderBase]: 212/384 cut-off events. [2024-06-28 00:02:55,403 INFO L125 PetriNetUnfolderBase]: For 3222/3222 co-relation queries the response was YES. [2024-06-28 00:02:55,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 384 events. 212/384 cut-off events. For 3222/3222 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1388 event pairs, 44 based on Foata normal form. 2/385 useless extension candidates. Maximal degree in co-relation 1767. Up to 286 conditions per place. [2024-06-28 00:02:55,409 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 51 selfloop transitions, 28 changer transitions 0/81 dead transitions. [2024-06-28 00:02:55,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 763 flow [2024-06-28 00:02:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:02:55,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:02:55,418 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 484 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:02:55,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 763 flow [2024-06-28 00:02:55,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 726 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:55,434 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 547 flow [2024-06-28 00:02:55,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=547, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-06-28 00:02:55,435 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-28 00:02:55,436 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 547 flow [2024-06-28 00:02:55,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 00:02:55,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:55,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:55,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:02:55,437 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 00:02:55,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash -279804311, now seen corresponding path program 1 times [2024-06-28 00:02:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040156975] [2024-06-28 00:02:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:56,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:56,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040156975] [2024-06-28 00:02:56,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040156975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:56,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:56,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:56,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454671173] [2024-06-28 00:02:56,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:56,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:56,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:56,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:56,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 547 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 00:02:56,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:56,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:56,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:57,100 INFO L124 PetriNetUnfolderBase]: 227/409 cut-off events. [2024-06-28 00:02:57,100 INFO L125 PetriNetUnfolderBase]: For 3789/3789 co-relation queries the response was YES. [2024-06-28 00:02:57,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 409 events. 227/409 cut-off events. For 3789/3789 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1505 event pairs, 53 based on Foata normal form. 1/409 useless extension candidates. Maximal degree in co-relation 1973. Up to 357 conditions per place. [2024-06-28 00:02:57,103 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 64 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2024-06-28 00:02:57,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 810 flow [2024-06-28 00:02:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 00:02:57,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 00:02:57,105 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 547 flow. Second operand 7 states and 85 transitions. [2024-06-28 00:02:57,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 810 flow [2024-06-28 00:02:57,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 754 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 00:02:57,111 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 589 flow [2024-06-28 00:02:57,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=589, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2024-06-28 00:02:57,111 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-28 00:02:57,111 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 589 flow [2024-06-28 00:02:57,112 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 00:02:57,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:57,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:57,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:02:57,112 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 00:02:57,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash -279714101, now seen corresponding path program 2 times [2024-06-28 00:02:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:57,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561841560] [2024-06-28 00:02:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:57,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:58,323 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 00:02:58,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561841560] [2024-06-28 00:02:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561841560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:58,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:58,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:58,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259691035] [2024-06-28 00:02:58,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:58,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:58,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:58,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:58,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:58,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 589 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 00:02:58,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:58,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:58,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:58,541 INFO L124 PetriNetUnfolderBase]: 225/406 cut-off events. [2024-06-28 00:02:58,542 INFO L125 PetriNetUnfolderBase]: For 4212/4212 co-relation queries the response was YES. [2024-06-28 00:02:58,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 406 events. 225/406 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1499 event pairs, 53 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1991. Up to 366 conditions per place. [2024-06-28 00:02:58,545 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 64 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-06-28 00:02:58,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 776 flow [2024-06-28 00:02:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 00:02:58,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-28 00:02:58,546 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 589 flow. Second operand 7 states and 83 transitions. [2024-06-28 00:02:58,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 776 flow [2024-06-28 00:02:58,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 748 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:58,553 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 600 flow [2024-06-28 00:02:58,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2024-06-28 00:02:58,553 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-28 00:02:58,553 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 600 flow [2024-06-28 00:02:58,554 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 00:02:58,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:58,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:58,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:02:58,554 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 00:02:58,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:58,554 INFO L85 PathProgramCache]: Analyzing trace with hash -871611729, now seen corresponding path program 1 times [2024-06-28 00:02:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:58,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903681704] [2024-06-28 00:02:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:58,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:59,792 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 00:02:59,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:59,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903681704] [2024-06-28 00:02:59,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903681704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:59,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:59,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:59,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869978050] [2024-06-28 00:02:59,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:59,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:59,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:59,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:59,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:02:59,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 600 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:02:59,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:59,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:02:59,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:00,207 INFO L124 PetriNetUnfolderBase]: 257/458 cut-off events. [2024-06-28 00:03:00,207 INFO L125 PetriNetUnfolderBase]: For 5485/5485 co-relation queries the response was YES. [2024-06-28 00:03:00,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 458 events. 257/458 cut-off events. For 5485/5485 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1728 event pairs, 55 based on Foata normal form. 4/461 useless extension candidates. Maximal degree in co-relation 2300. Up to 348 conditions per place. [2024-06-28 00:03:00,211 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 69 selfloop transitions, 24 changer transitions 0/95 dead transitions. [2024-06-28 00:03:00,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 95 transitions, 911 flow [2024-06-28 00:03:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 00:03:00,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-28 00:03:00,213 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 600 flow. Second operand 9 states and 107 transitions. [2024-06-28 00:03:00,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 95 transitions, 911 flow [2024-06-28 00:03:00,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 95 transitions, 876 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:00,221 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 681 flow [2024-06-28 00:03:00,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=681, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-06-28 00:03:00,221 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-28 00:03:00,222 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 681 flow [2024-06-28 00:03:00,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:00,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:00,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:00,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:03:00,222 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 00:03:00,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash -275989296, now seen corresponding path program 1 times [2024-06-28 00:03:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:00,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986688905] [2024-06-28 00:03:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:01,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986688905] [2024-06-28 00:03:01,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986688905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:01,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:01,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:01,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440972115] [2024-06-28 00:03:01,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:01,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:01,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:01,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:01,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:01,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:01,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 681 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:01,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:01,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:01,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:01,552 INFO L124 PetriNetUnfolderBase]: 260/463 cut-off events. [2024-06-28 00:03:01,552 INFO L125 PetriNetUnfolderBase]: For 5914/5914 co-relation queries the response was YES. [2024-06-28 00:03:01,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 463 events. 260/463 cut-off events. For 5914/5914 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1752 event pairs, 54 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 2480. Up to 400 conditions per place. [2024-06-28 00:03:01,556 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 69 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-28 00:03:01,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 944 flow [2024-06-28 00:03:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 00:03:01,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:03:01,558 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 681 flow. Second operand 8 states and 96 transitions. [2024-06-28 00:03:01,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 944 flow [2024-06-28 00:03:01,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 94 transitions, 912 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:01,569 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 716 flow [2024-06-28 00:03:01,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=716, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2024-06-28 00:03:01,570 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-28 00:03:01,570 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 716 flow [2024-06-28 00:03:01,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:01,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:01,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:01,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:03:01,571 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 00:03:01,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:01,571 INFO L85 PathProgramCache]: Analyzing trace with hash 220150634, now seen corresponding path program 2 times [2024-06-28 00:03:01,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:01,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515802592] [2024-06-28 00:03:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:01,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:02,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:02,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515802592] [2024-06-28 00:03:02,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515802592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:02,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:02,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:03:02,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240503698] [2024-06-28 00:03:02,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:02,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:03:02,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:03:02,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:03:02,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:02,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 716 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 00:03:02,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:02,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:02,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:02,737 INFO L124 PetriNetUnfolderBase]: 263/468 cut-off events. [2024-06-28 00:03:02,737 INFO L125 PetriNetUnfolderBase]: For 6551/6551 co-relation queries the response was YES. [2024-06-28 00:03:02,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 468 events. 263/468 cut-off events. For 6551/6551 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1778 event pairs, 55 based on Foata normal form. 1/468 useless extension candidates. Maximal degree in co-relation 2551. Up to 404 conditions per place. [2024-06-28 00:03:02,741 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 66 selfloop transitions, 28 changer transitions 0/96 dead transitions. [2024-06-28 00:03:02,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 96 transitions, 991 flow [2024-06-28 00:03:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:03:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:03:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 00:03:02,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-28 00:03:02,742 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 716 flow. Second operand 7 states and 88 transitions. [2024-06-28 00:03:02,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 96 transitions, 991 flow [2024-06-28 00:03:02,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 935 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:02,752 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 765 flow [2024-06-28 00:03:02,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=765, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2024-06-28 00:03:02,753 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-28 00:03:02,753 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 765 flow [2024-06-28 00:03:02,753 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 00:03:02,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:02,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:02,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:03:02,753 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 00:03:02,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1463752944, now seen corresponding path program 3 times [2024-06-28 00:03:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:02,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155184953] [2024-06-28 00:03:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:02,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:03,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:03,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155184953] [2024-06-28 00:03:03,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155184953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:03,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:03,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:03,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857434988] [2024-06-28 00:03:03,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:03,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:03,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:03,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:03,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:03,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 765 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:03,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:03,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:04,040 INFO L124 PetriNetUnfolderBase]: 266/473 cut-off events. [2024-06-28 00:03:04,040 INFO L125 PetriNetUnfolderBase]: For 7239/7239 co-relation queries the response was YES. [2024-06-28 00:03:04,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 473 events. 266/473 cut-off events. For 7239/7239 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1798 event pairs, 53 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 2644. Up to 445 conditions per place. [2024-06-28 00:03:04,044 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 77 selfloop transitions, 17 changer transitions 0/96 dead transitions. [2024-06-28 00:03:04,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 989 flow [2024-06-28 00:03:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 00:03:04,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-28 00:03:04,045 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 765 flow. Second operand 8 states and 89 transitions. [2024-06-28 00:03:04,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 989 flow [2024-06-28 00:03:04,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 956 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:04,056 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 795 flow [2024-06-28 00:03:04,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=795, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-06-28 00:03:04,057 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-28 00:03:04,057 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 795 flow [2024-06-28 00:03:04,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:04,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:04,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:04,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:03:04,057 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 00:03:04,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:04,058 INFO L85 PathProgramCache]: Analyzing trace with hash 468219193, now seen corresponding path program 2 times [2024-06-28 00:03:04,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:04,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060248194] [2024-06-28 00:03:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:04,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:05,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:05,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060248194] [2024-06-28 00:03:05,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060248194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:05,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:05,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:05,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722746024] [2024-06-28 00:03:05,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:05,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:05,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:05,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:05,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:05,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:05,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 795 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:05,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:05,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:05,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:05,562 INFO L124 PetriNetUnfolderBase]: 272/483 cut-off events. [2024-06-28 00:03:05,562 INFO L125 PetriNetUnfolderBase]: For 8220/8220 co-relation queries the response was YES. [2024-06-28 00:03:05,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 483 events. 272/483 cut-off events. For 8220/8220 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1842 event pairs, 53 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 2726. Up to 438 conditions per place. [2024-06-28 00:03:05,566 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 82 selfloop transitions, 19 changer transitions 0/103 dead transitions. [2024-06-28 00:03:05,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 1107 flow [2024-06-28 00:03:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 00:03:05,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-28 00:03:05,568 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 795 flow. Second operand 9 states and 100 transitions. [2024-06-28 00:03:05,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 1107 flow [2024-06-28 00:03:05,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 103 transitions, 1070 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:05,579 INFO L231 Difference]: Finished difference. Result has 101 places, 93 transitions, 849 flow [2024-06-28 00:03:05,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=849, PETRI_PLACES=101, PETRI_TRANSITIONS=93} [2024-06-28 00:03:05,579 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-28 00:03:05,579 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 93 transitions, 849 flow [2024-06-28 00:03:05,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:05,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:05,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:05,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:03:05,580 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 00:03:05,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:05,580 INFO L85 PathProgramCache]: Analyzing trace with hash 475570626, now seen corresponding path program 4 times [2024-06-28 00:03:05,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:05,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491112088] [2024-06-28 00:03:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:05,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:06,494 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 00:03:06,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:06,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491112088] [2024-06-28 00:03:06,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491112088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:06,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:06,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:06,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652297086] [2024-06-28 00:03:06,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:06,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:06,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:06,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:06,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:06,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:06,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 849 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:06,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:06,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:06,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:06,804 INFO L124 PetriNetUnfolderBase]: 270/480 cut-off events. [2024-06-28 00:03:06,804 INFO L125 PetriNetUnfolderBase]: For 8597/8597 co-relation queries the response was YES. [2024-06-28 00:03:06,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 480 events. 270/480 cut-off events. For 8597/8597 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1832 event pairs, 53 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2753. Up to 458 conditions per place. [2024-06-28 00:03:06,808 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 84 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2024-06-28 00:03:06,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 1061 flow [2024-06-28 00:03:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:06,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 00:03:06,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-28 00:03:06,809 INFO L175 Difference]: Start difference. First operand has 101 places, 93 transitions, 849 flow. Second operand 8 states and 87 transitions. [2024-06-28 00:03:06,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 1061 flow [2024-06-28 00:03:06,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 100 transitions, 1020 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:06,821 INFO L231 Difference]: Finished difference. Result has 104 places, 93 transitions, 841 flow [2024-06-28 00:03:06,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=841, PETRI_PLACES=104, PETRI_TRANSITIONS=93} [2024-06-28 00:03:06,821 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-06-28 00:03:06,822 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 93 transitions, 841 flow [2024-06-28 00:03:06,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:06,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:06,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:06,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:03:06,822 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 00:03:06,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:06,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1290077633, now seen corresponding path program 3 times [2024-06-28 00:03:06,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:06,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694363577] [2024-06-28 00:03:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:06,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:07,792 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 00:03:07,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:07,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694363577] [2024-06-28 00:03:07,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694363577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:07,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:07,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:07,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825291163] [2024-06-28 00:03:07,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:07,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:07,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:07,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:07,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:07,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:07,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 841 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:07,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:07,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:07,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:08,182 INFO L124 PetriNetUnfolderBase]: 279/495 cut-off events. [2024-06-28 00:03:08,182 INFO L125 PetriNetUnfolderBase]: For 9855/9855 co-relation queries the response was YES. [2024-06-28 00:03:08,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 495 events. 279/495 cut-off events. For 9855/9855 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1907 event pairs, 54 based on Foata normal form. 3/497 useless extension candidates. Maximal degree in co-relation 2862. Up to 464 conditions per place. [2024-06-28 00:03:08,186 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 86 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2024-06-28 00:03:08,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 105 transitions, 1117 flow [2024-06-28 00:03:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:08,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 00:03:08,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-28 00:03:08,188 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 841 flow. Second operand 9 states and 95 transitions. [2024-06-28 00:03:08,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 105 transitions, 1117 flow [2024-06-28 00:03:08,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 1071 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:08,201 INFO L231 Difference]: Finished difference. Result has 106 places, 97 transitions, 895 flow [2024-06-28 00:03:08,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=895, PETRI_PLACES=106, PETRI_TRANSITIONS=97} [2024-06-28 00:03:08,202 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-28 00:03:08,202 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 97 transitions, 895 flow [2024-06-28 00:03:08,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:08,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:08,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:08,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:03:08,203 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 00:03:08,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:08,203 INFO L85 PathProgramCache]: Analyzing trace with hash 475570843, now seen corresponding path program 4 times [2024-06-28 00:03:08,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:08,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443525078] [2024-06-28 00:03:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:09,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:09,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443525078] [2024-06-28 00:03:09,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443525078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:09,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:09,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653126765] [2024-06-28 00:03:09,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:09,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:09,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:09,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:09,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 97 transitions, 895 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:09,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:09,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:09,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:09,782 INFO L124 PetriNetUnfolderBase]: 275/489 cut-off events. [2024-06-28 00:03:09,782 INFO L125 PetriNetUnfolderBase]: For 9929/9929 co-relation queries the response was YES. [2024-06-28 00:03:09,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 489 events. 275/489 cut-off events. For 9929/9929 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1885 event pairs, 53 based on Foata normal form. 2/490 useless extension candidates. Maximal degree in co-relation 2855. Up to 455 conditions per place. [2024-06-28 00:03:09,786 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 87 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-06-28 00:03:09,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 1127 flow [2024-06-28 00:03:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 00:03:09,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-06-28 00:03:09,787 INFO L175 Difference]: Start difference. First operand has 106 places, 97 transitions, 895 flow. Second operand 8 states and 91 transitions. [2024-06-28 00:03:09,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 1127 flow [2024-06-28 00:03:09,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 106 transitions, 1025 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:09,801 INFO L231 Difference]: Finished difference. Result has 105 places, 97 transitions, 832 flow [2024-06-28 00:03:09,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=832, PETRI_PLACES=105, PETRI_TRANSITIONS=97} [2024-06-28 00:03:09,802 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-28 00:03:09,802 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 97 transitions, 832 flow [2024-06-28 00:03:09,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:09,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:09,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:09,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:03:09,802 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 00:03:09,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:09,803 INFO L85 PathProgramCache]: Analyzing trace with hash -75246927, now seen corresponding path program 3 times [2024-06-28 00:03:09,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:09,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517216381] [2024-06-28 00:03:09,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:09,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:10,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:10,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517216381] [2024-06-28 00:03:10,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517216381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:10,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:03:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28973276] [2024-06-28 00:03:10,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:10,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:03:10,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:03:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:03:10,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:03:10,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 97 transitions, 832 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 00:03:10,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:10,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:03:10,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:11,057 INFO L124 PetriNetUnfolderBase]: 278/494 cut-off events. [2024-06-28 00:03:11,057 INFO L125 PetriNetUnfolderBase]: For 10161/10161 co-relation queries the response was YES. [2024-06-28 00:03:11,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2884 conditions, 494 events. 278/494 cut-off events. For 10161/10161 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1916 event pairs, 44 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2831. Up to 400 conditions per place. [2024-06-28 00:03:11,061 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 81 selfloop transitions, 30 changer transitions 0/113 dead transitions. [2024-06-28 00:03:11,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 1168 flow [2024-06-28 00:03:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:03:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:03:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-28 00:03:11,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 00:03:11,062 INFO L175 Difference]: Start difference. First operand has 105 places, 97 transitions, 832 flow. Second operand 7 states and 95 transitions. [2024-06-28 00:03:11,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 1168 flow [2024-06-28 00:03:11,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 113 transitions, 1131 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:11,077 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 899 flow [2024-06-28 00:03:11,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=899, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2024-06-28 00:03:11,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-28 00:03:11,078 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 899 flow [2024-06-28 00:03:11,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 00:03:11,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:11,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:11,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:03:11,078 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 00:03:11,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash -74839587, now seen corresponding path program 4 times [2024-06-28 00:03:11,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:11,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679896149] [2024-06-28 00:03:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:11,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:12,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:12,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679896149] [2024-06-28 00:03:12,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679896149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:12,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:12,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:03:12,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094000758] [2024-06-28 00:03:12,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:12,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:03:12,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:12,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:03:12,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:03:12,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:03:12,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 899 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 00:03:12,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:12,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:03:12,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:12,419 INFO L124 PetriNetUnfolderBase]: 276/491 cut-off events. [2024-06-28 00:03:12,419 INFO L125 PetriNetUnfolderBase]: For 10699/10699 co-relation queries the response was YES. [2024-06-28 00:03:12,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 491 events. 276/491 cut-off events. For 10699/10699 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1900 event pairs, 42 based on Foata normal form. 1/491 useless extension candidates. Maximal degree in co-relation 2883. Up to 424 conditions per place. [2024-06-28 00:03:12,423 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 81 selfloop transitions, 26 changer transitions 0/109 dead transitions. [2024-06-28 00:03:12,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 109 transitions, 1133 flow [2024-06-28 00:03:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:03:12,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:03:12,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-28 00:03:12,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:03:12,425 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 899 flow. Second operand 7 states and 91 transitions. [2024-06-28 00:03:12,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 109 transitions, 1133 flow [2024-06-28 00:03:12,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 109 transitions, 1092 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:12,439 INFO L231 Difference]: Finished difference. Result has 110 places, 101 transitions, 918 flow [2024-06-28 00:03:12,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=918, PETRI_PLACES=110, PETRI_TRANSITIONS=101} [2024-06-28 00:03:12,440 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-28 00:03:12,440 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 101 transitions, 918 flow [2024-06-28 00:03:12,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 00:03:12,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:12,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:12,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:03:12,441 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 00:03:12,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash 993874982, now seen corresponding path program 5 times [2024-06-28 00:03:12,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128839479] [2024-06-28 00:03:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:12,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:13,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:13,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128839479] [2024-06-28 00:03:13,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128839479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:13,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:13,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:03:13,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907477458] [2024-06-28 00:03:13,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:13,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:03:13,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:03:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:03:13,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:13,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 101 transitions, 918 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 00:03:13,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:13,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:13,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:13,941 INFO L124 PetriNetUnfolderBase]: 283/503 cut-off events. [2024-06-28 00:03:13,941 INFO L125 PetriNetUnfolderBase]: For 10696/10696 co-relation queries the response was YES. [2024-06-28 00:03:13,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3018 conditions, 503 events. 283/503 cut-off events. For 10696/10696 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1966 event pairs, 43 based on Foata normal form. 1/503 useless extension candidates. Maximal degree in co-relation 2962. Up to 398 conditions per place. [2024-06-28 00:03:13,945 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 79 selfloop transitions, 37 changer transitions 0/118 dead transitions. [2024-06-28 00:03:13,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 1275 flow [2024-06-28 00:03:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:13,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:03:13,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:03:13,947 INFO L175 Difference]: Start difference. First operand has 110 places, 101 transitions, 918 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:03:13,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 1275 flow [2024-06-28 00:03:13,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 1198 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:13,962 INFO L231 Difference]: Finished difference. Result has 113 places, 106 transitions, 986 flow [2024-06-28 00:03:13,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=986, PETRI_PLACES=113, PETRI_TRANSITIONS=106} [2024-06-28 00:03:13,963 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-28 00:03:13,963 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 106 transitions, 986 flow [2024-06-28 00:03:13,963 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 00:03:13,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:13,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:13,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:03:13,964 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 00:03:13,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash 993621092, now seen corresponding path program 6 times [2024-06-28 00:03:13,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:13,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850617539] [2024-06-28 00:03:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:15,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:15,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850617539] [2024-06-28 00:03:15,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850617539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:15,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:15,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:15,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241572547] [2024-06-28 00:03:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:15,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:15,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:15,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:15,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:15,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:15,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 106 transitions, 986 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:15,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:15,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:15,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:15,836 INFO L124 PetriNetUnfolderBase]: 281/501 cut-off events. [2024-06-28 00:03:15,836 INFO L125 PetriNetUnfolderBase]: For 10509/10509 co-relation queries the response was YES. [2024-06-28 00:03:15,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3022 conditions, 501 events. 281/501 cut-off events. For 10509/10509 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1968 event pairs, 45 based on Foata normal form. 1/501 useless extension candidates. Maximal degree in co-relation 2964. Up to 396 conditions per place. [2024-06-28 00:03:15,840 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 77 selfloop transitions, 38 changer transitions 0/117 dead transitions. [2024-06-28 00:03:15,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 1244 flow [2024-06-28 00:03:15,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 00:03:15,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-28 00:03:15,842 INFO L175 Difference]: Start difference. First operand has 113 places, 106 transitions, 986 flow. Second operand 9 states and 109 transitions. [2024-06-28 00:03:15,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 1244 flow [2024-06-28 00:03:15,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 1174 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:15,859 INFO L231 Difference]: Finished difference. Result has 117 places, 106 transitions, 997 flow [2024-06-28 00:03:15,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=997, PETRI_PLACES=117, PETRI_TRANSITIONS=106} [2024-06-28 00:03:15,860 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-28 00:03:15,860 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 106 transitions, 997 flow [2024-06-28 00:03:15,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:15,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:15,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:15,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:03:15,861 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 00:03:15,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:15,861 INFO L85 PathProgramCache]: Analyzing trace with hash 981109089, now seen corresponding path program 5 times [2024-06-28 00:03:15,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:15,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744789775] [2024-06-28 00:03:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:15,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:17,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:17,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744789775] [2024-06-28 00:03:17,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744789775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:17,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:17,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:17,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726836797] [2024-06-28 00:03:17,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:17,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:17,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:17,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:17,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 106 transitions, 997 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:17,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:17,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:17,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:17,658 INFO L124 PetriNetUnfolderBase]: 288/512 cut-off events. [2024-06-28 00:03:17,658 INFO L125 PetriNetUnfolderBase]: For 11967/11967 co-relation queries the response was YES. [2024-06-28 00:03:17,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 512 events. 288/512 cut-off events. For 11967/11967 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2021 event pairs, 46 based on Foata normal form. 4/515 useless extension candidates. Maximal degree in co-relation 3015. Up to 317 conditions per place. [2024-06-28 00:03:17,663 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 83 selfloop transitions, 42 changer transitions 0/127 dead transitions. [2024-06-28 00:03:17,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 127 transitions, 1447 flow [2024-06-28 00:03:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:17,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:17,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:17,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-28 00:03:17,664 INFO L175 Difference]: Start difference. First operand has 117 places, 106 transitions, 997 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:17,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 127 transitions, 1447 flow [2024-06-28 00:03:17,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 127 transitions, 1372 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:17,684 INFO L231 Difference]: Finished difference. Result has 119 places, 111 transitions, 1070 flow [2024-06-28 00:03:17,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1070, PETRI_PLACES=119, PETRI_TRANSITIONS=111} [2024-06-28 00:03:17,687 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-28 00:03:17,687 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 111 transitions, 1070 flow [2024-06-28 00:03:17,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:17,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:17,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:17,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:03:17,688 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 00:03:17,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:17,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2144241115, now seen corresponding path program 1 times [2024-06-28 00:03:17,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:17,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786684890] [2024-06-28 00:03:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:17,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:19,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:19,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786684890] [2024-06-28 00:03:19,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786684890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:19,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:19,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:19,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973938770] [2024-06-28 00:03:19,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:19,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:19,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:19,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:19,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:19,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:19,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 111 transitions, 1070 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:19,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:19,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:19,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:20,088 INFO L124 PetriNetUnfolderBase]: 285/507 cut-off events. [2024-06-28 00:03:20,088 INFO L125 PetriNetUnfolderBase]: For 11238/11238 co-relation queries the response was YES. [2024-06-28 00:03:20,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3098 conditions, 507 events. 285/507 cut-off events. For 11238/11238 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1974 event pairs, 58 based on Foata normal form. 2/508 useless extension candidates. Maximal degree in co-relation 3038. Up to 479 conditions per place. [2024-06-28 00:03:20,092 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 103 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2024-06-28 00:03:20,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 119 transitions, 1322 flow [2024-06-28 00:03:20,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:20,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 00:03:20,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-28 00:03:20,093 INFO L175 Difference]: Start difference. First operand has 119 places, 111 transitions, 1070 flow. Second operand 9 states and 93 transitions. [2024-06-28 00:03:20,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 119 transitions, 1322 flow [2024-06-28 00:03:20,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 119 transitions, 1248 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:20,114 INFO L231 Difference]: Finished difference. Result has 123 places, 111 transitions, 1028 flow [2024-06-28 00:03:20,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1028, PETRI_PLACES=123, PETRI_TRANSITIONS=111} [2024-06-28 00:03:20,114 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-28 00:03:20,114 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 111 transitions, 1028 flow [2024-06-28 00:03:20,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:20,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:20,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:20,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:03:20,115 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 00:03:20,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1208104863, now seen corresponding path program 1 times [2024-06-28 00:03:20,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:20,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666995783] [2024-06-28 00:03:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:20,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666995783] [2024-06-28 00:03:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666995783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:21,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:21,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:21,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066286987] [2024-06-28 00:03:21,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:21,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:21,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:21,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:21,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 111 transitions, 1028 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 00:03:21,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:21,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:21,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:21,860 INFO L124 PetriNetUnfolderBase]: 305/547 cut-off events. [2024-06-28 00:03:21,861 INFO L125 PetriNetUnfolderBase]: For 12840/12840 co-relation queries the response was YES. [2024-06-28 00:03:21,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3254 conditions, 547 events. 305/547 cut-off events. For 12840/12840 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2242 event pairs, 62 based on Foata normal form. 2/548 useless extension candidates. Maximal degree in co-relation 3192. Up to 461 conditions per place. [2024-06-28 00:03:21,864 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 104 selfloop transitions, 22 changer transitions 0/128 dead transitions. [2024-06-28 00:03:21,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 128 transitions, 1398 flow [2024-06-28 00:03:21,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:21,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 00:03:21,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:03:21,865 INFO L175 Difference]: Start difference. First operand has 123 places, 111 transitions, 1028 flow. Second operand 8 states and 96 transitions. [2024-06-28 00:03:21,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 128 transitions, 1398 flow [2024-06-28 00:03:21,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 128 transitions, 1361 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:21,887 INFO L231 Difference]: Finished difference. Result has 124 places, 115 transitions, 1079 flow [2024-06-28 00:03:21,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1079, PETRI_PLACES=124, PETRI_TRANSITIONS=115} [2024-06-28 00:03:21,887 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-28 00:03:21,887 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 115 transitions, 1079 flow [2024-06-28 00:03:21,887 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 00:03:21,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:21,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:21,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:03:21,888 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 00:03:21,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1205363223, now seen corresponding path program 2 times [2024-06-28 00:03:21,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:21,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435473165] [2024-06-28 00:03:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:21,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:23,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:23,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435473165] [2024-06-28 00:03:23,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435473165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:23,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:23,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:23,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653864175] [2024-06-28 00:03:23,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:23,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:23,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:23,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:23,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:23,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:23,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 115 transitions, 1079 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 00:03:23,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:23,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:23,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:23,565 INFO L124 PetriNetUnfolderBase]: 309/555 cut-off events. [2024-06-28 00:03:23,565 INFO L125 PetriNetUnfolderBase]: For 13733/13733 co-relation queries the response was YES. [2024-06-28 00:03:23,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3368 conditions, 555 events. 309/555 cut-off events. For 13733/13733 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2299 event pairs, 66 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3305. Up to 498 conditions per place. [2024-06-28 00:03:23,568 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 104 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2024-06-28 00:03:23,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 1366 flow [2024-06-28 00:03:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 00:03:23,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 00:03:23,569 INFO L175 Difference]: Start difference. First operand has 124 places, 115 transitions, 1079 flow. Second operand 8 states and 93 transitions. [2024-06-28 00:03:23,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 1366 flow [2024-06-28 00:03:23,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 126 transitions, 1326 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:23,589 INFO L231 Difference]: Finished difference. Result has 128 places, 116 transitions, 1098 flow [2024-06-28 00:03:23,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1098, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2024-06-28 00:03:23,590 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-28 00:03:23,590 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 1098 flow [2024-06-28 00:03:23,590 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 00:03:23,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:23,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:23,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:03:23,590 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 00:03:23,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash -83998065, now seen corresponding path program 1 times [2024-06-28 00:03:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:23,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102451420] [2024-06-28 00:03:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:25,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102451420] [2024-06-28 00:03:25,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102451420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:25,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:25,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:25,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391014660] [2024-06-28 00:03:25,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:25,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:25,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:25,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:25,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:25,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:25,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 1098 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 00:03:25,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:25,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:25,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:25,407 INFO L124 PetriNetUnfolderBase]: 317/568 cut-off events. [2024-06-28 00:03:25,407 INFO L125 PetriNetUnfolderBase]: For 14653/14653 co-relation queries the response was YES. [2024-06-28 00:03:25,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3476 conditions, 568 events. 317/568 cut-off events. For 14653/14653 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2372 event pairs, 67 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 3411. Up to 471 conditions per place. [2024-06-28 00:03:25,411 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 97 selfloop transitions, 31 changer transitions 0/130 dead transitions. [2024-06-28 00:03:25,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 1460 flow [2024-06-28 00:03:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 00:03:25,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-28 00:03:25,412 INFO L175 Difference]: Start difference. First operand has 128 places, 116 transitions, 1098 flow. Second operand 8 states and 97 transitions. [2024-06-28 00:03:25,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 1460 flow [2024-06-28 00:03:25,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1418 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:25,437 INFO L231 Difference]: Finished difference. Result has 130 places, 120 transitions, 1147 flow [2024-06-28 00:03:25,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1147, PETRI_PLACES=130, PETRI_TRANSITIONS=120} [2024-06-28 00:03:25,437 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-28 00:03:25,437 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 120 transitions, 1147 flow [2024-06-28 00:03:25,438 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 00:03:25,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:25,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:25,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:03:25,438 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 00:03:25,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1205243129, now seen corresponding path program 2 times [2024-06-28 00:03:25,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:25,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358054977] [2024-06-28 00:03:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:25,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:26,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358054977] [2024-06-28 00:03:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358054977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:26,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:26,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720360401] [2024-06-28 00:03:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:26,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:26,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 120 transitions, 1147 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 00:03:26,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:26,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:26,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:26,996 INFO L124 PetriNetUnfolderBase]: 325/581 cut-off events. [2024-06-28 00:03:26,996 INFO L125 PetriNetUnfolderBase]: For 16069/16069 co-relation queries the response was YES. [2024-06-28 00:03:26,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 581 events. 325/581 cut-off events. For 16069/16069 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2430 event pairs, 70 based on Foata normal form. 1/581 useless extension candidates. Maximal degree in co-relation 3566. Up to 504 conditions per place. [2024-06-28 00:03:27,002 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 100 selfloop transitions, 32 changer transitions 0/134 dead transitions. [2024-06-28 00:03:27,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 134 transitions, 1528 flow [2024-06-28 00:03:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 00:03:27,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 00:03:27,012 INFO L175 Difference]: Start difference. First operand has 130 places, 120 transitions, 1147 flow. Second operand 8 states and 98 transitions. [2024-06-28 00:03:27,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 134 transitions, 1528 flow [2024-06-28 00:03:27,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 134 transitions, 1488 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:27,037 INFO L231 Difference]: Finished difference. Result has 135 places, 124 transitions, 1232 flow [2024-06-28 00:03:27,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2024-06-28 00:03:27,038 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-06-28 00:03:27,038 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 1232 flow [2024-06-28 00:03:27,038 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 00:03:27,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:27,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:27,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:03:27,038 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 00:03:27,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1205247779, now seen corresponding path program 3 times [2024-06-28 00:03:27,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:27,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839981188] [2024-06-28 00:03:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:27,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:28,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:28,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839981188] [2024-06-28 00:03:28,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839981188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:28,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:28,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:28,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233828208] [2024-06-28 00:03:28,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:28,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:28,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:28,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 1232 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 00:03:28,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:28,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:28,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:28,615 INFO L124 PetriNetUnfolderBase]: 328/586 cut-off events. [2024-06-28 00:03:28,615 INFO L125 PetriNetUnfolderBase]: For 17162/17162 co-relation queries the response was YES. [2024-06-28 00:03:28,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 586 events. 328/586 cut-off events. For 17162/17162 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2445 event pairs, 67 based on Foata normal form. 1/586 useless extension candidates. Maximal degree in co-relation 3748. Up to 513 conditions per place. [2024-06-28 00:03:28,619 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 100 selfloop transitions, 32 changer transitions 0/134 dead transitions. [2024-06-28 00:03:28,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 134 transitions, 1532 flow [2024-06-28 00:03:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 00:03:28,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:03:28,620 INFO L175 Difference]: Start difference. First operand has 135 places, 124 transitions, 1232 flow. Second operand 8 states and 96 transitions. [2024-06-28 00:03:28,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 134 transitions, 1532 flow [2024-06-28 00:03:28,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 134 transitions, 1486 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:28,648 INFO L231 Difference]: Finished difference. Result has 138 places, 126 transitions, 1275 flow [2024-06-28 00:03:28,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1275, PETRI_PLACES=138, PETRI_TRANSITIONS=126} [2024-06-28 00:03:28,649 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2024-06-28 00:03:28,649 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 1275 flow [2024-06-28 00:03:28,649 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 00:03:28,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:28,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:28,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:03:28,650 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 00:03:28,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:28,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1205247903, now seen corresponding path program 3 times [2024-06-28 00:03:28,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:28,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143330875] [2024-06-28 00:03:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:28,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:30,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143330875] [2024-06-28 00:03:30,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143330875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:30,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:30,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:30,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795310714] [2024-06-28 00:03:30,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:30,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:30,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:30,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:30,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:30,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:30,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 1275 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 00:03:30,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:30,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:30,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:30,722 INFO L124 PetriNetUnfolderBase]: 325/581 cut-off events. [2024-06-28 00:03:30,722 INFO L125 PetriNetUnfolderBase]: For 17704/17704 co-relation queries the response was YES. [2024-06-28 00:03:30,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3772 conditions, 581 events. 325/581 cut-off events. For 17704/17704 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2432 event pairs, 65 based on Foata normal form. 2/582 useless extension candidates. Maximal degree in co-relation 3702. Up to 535 conditions per place. [2024-06-28 00:03:30,726 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 115 selfloop transitions, 18 changer transitions 0/135 dead transitions. [2024-06-28 00:03:30,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 135 transitions, 1563 flow [2024-06-28 00:03:30,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 00:03:30,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 00:03:30,734 INFO L175 Difference]: Start difference. First operand has 138 places, 126 transitions, 1275 flow. Second operand 8 states and 92 transitions. [2024-06-28 00:03:30,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 135 transitions, 1563 flow [2024-06-28 00:03:30,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 135 transitions, 1492 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:30,765 INFO L231 Difference]: Finished difference. Result has 140 places, 126 transitions, 1244 flow [2024-06-28 00:03:30,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1244, PETRI_PLACES=140, PETRI_TRANSITIONS=126} [2024-06-28 00:03:30,765 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-06-28 00:03:30,766 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 126 transitions, 1244 flow [2024-06-28 00:03:30,766 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 00:03:30,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:30,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:30,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:03:30,766 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 00:03:30,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:30,767 INFO L85 PathProgramCache]: Analyzing trace with hash 34089615, now seen corresponding path program 4 times [2024-06-28 00:03:30,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:30,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489940886] [2024-06-28 00:03:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:32,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:32,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489940886] [2024-06-28 00:03:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489940886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:32,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:32,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:32,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85129104] [2024-06-28 00:03:32,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:32,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:32,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:32,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:32,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:32,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 126 transitions, 1244 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 00:03:32,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:32,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:32,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:32,364 INFO L124 PetriNetUnfolderBase]: 328/586 cut-off events. [2024-06-28 00:03:32,364 INFO L125 PetriNetUnfolderBase]: For 18053/18053 co-relation queries the response was YES. [2024-06-28 00:03:32,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 586 events. 328/586 cut-off events. For 18053/18053 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2458 event pairs, 66 based on Foata normal form. 1/586 useless extension candidates. Maximal degree in co-relation 3724. Up to 501 conditions per place. [2024-06-28 00:03:32,368 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 101 selfloop transitions, 36 changer transitions 0/139 dead transitions. [2024-06-28 00:03:32,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 139 transitions, 1636 flow [2024-06-28 00:03:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 00:03:32,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 00:03:32,370 INFO L175 Difference]: Start difference. First operand has 140 places, 126 transitions, 1244 flow. Second operand 8 states and 100 transitions. [2024-06-28 00:03:32,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 139 transitions, 1636 flow [2024-06-28 00:03:32,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 139 transitions, 1598 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:32,402 INFO L231 Difference]: Finished difference. Result has 142 places, 128 transitions, 1303 flow [2024-06-28 00:03:32,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1303, PETRI_PLACES=142, PETRI_TRANSITIONS=128} [2024-06-28 00:03:32,402 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2024-06-28 00:03:32,402 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 128 transitions, 1303 flow [2024-06-28 00:03:32,403 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 00:03:32,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:32,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:32,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:03:32,403 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 00:03:32,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:32,403 INFO L85 PathProgramCache]: Analyzing trace with hash 34094265, now seen corresponding path program 5 times [2024-06-28 00:03:32,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:32,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230214562] [2024-06-28 00:03:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:32,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:33,543 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 00:03:33,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:33,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230214562] [2024-06-28 00:03:33,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230214562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:33,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:33,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:33,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775719635] [2024-06-28 00:03:33,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:33,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:33,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:33,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:33,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:33,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:33,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 128 transitions, 1303 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 00:03:33,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:33,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:33,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:33,807 INFO L124 PetriNetUnfolderBase]: 331/591 cut-off events. [2024-06-28 00:03:33,808 INFO L125 PetriNetUnfolderBase]: For 19085/19085 co-relation queries the response was YES. [2024-06-28 00:03:33,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3892 conditions, 591 events. 331/591 cut-off events. For 19085/19085 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2486 event pairs, 68 based on Foata normal form. 1/591 useless extension candidates. Maximal degree in co-relation 3820. Up to 524 conditions per place. [2024-06-28 00:03:33,813 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 105 selfloop transitions, 32 changer transitions 0/139 dead transitions. [2024-06-28 00:03:33,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 139 transitions, 1625 flow [2024-06-28 00:03:33,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 00:03:33,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 00:03:33,815 INFO L175 Difference]: Start difference. First operand has 142 places, 128 transitions, 1303 flow. Second operand 9 states and 102 transitions. [2024-06-28 00:03:33,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 139 transitions, 1625 flow [2024-06-28 00:03:33,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 1532 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:33,851 INFO L231 Difference]: Finished difference. Result has 145 places, 130 transitions, 1307 flow [2024-06-28 00:03:33,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1307, PETRI_PLACES=145, PETRI_TRANSITIONS=130} [2024-06-28 00:03:33,851 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-28 00:03:33,852 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 130 transitions, 1307 flow [2024-06-28 00:03:33,852 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 00:03:33,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:33,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:33,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:03:33,852 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 00:03:33,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:33,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1089772283, now seen corresponding path program 1 times [2024-06-28 00:03:33,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:33,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468045236] [2024-06-28 00:03:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:33,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:35,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:35,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468045236] [2024-06-28 00:03:35,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468045236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:35,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:35,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:35,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262724818] [2024-06-28 00:03:35,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:35,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:35,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:35,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 130 transitions, 1307 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:35,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:35,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:35,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:35,851 INFO L124 PetriNetUnfolderBase]: 347/617 cut-off events. [2024-06-28 00:03:35,851 INFO L125 PetriNetUnfolderBase]: For 22090/22090 co-relation queries the response was YES. [2024-06-28 00:03:35,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4104 conditions, 617 events. 347/617 cut-off events. For 22090/22090 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2633 event pairs, 68 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 4031. Up to 473 conditions per place. [2024-06-28 00:03:35,855 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 113 selfloop transitions, 36 changer transitions 0/151 dead transitions. [2024-06-28 00:03:35,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 151 transitions, 1843 flow [2024-06-28 00:03:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:03:35,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:03:35,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 00:03:35,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-28 00:03:35,856 INFO L175 Difference]: Start difference. First operand has 145 places, 130 transitions, 1307 flow. Second operand 12 states and 137 transitions. [2024-06-28 00:03:35,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 151 transitions, 1843 flow [2024-06-28 00:03:35,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 151 transitions, 1770 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:35,897 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 1351 flow [2024-06-28 00:03:35,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1351, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2024-06-28 00:03:35,899 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-06-28 00:03:35,899 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 1351 flow [2024-06-28 00:03:35,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:35,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:35,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:35,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:03:35,899 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 00:03:35,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash 34094451, now seen corresponding path program 2 times [2024-06-28 00:03:35,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:35,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438102394] [2024-06-28 00:03:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:35,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:37,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:37,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438102394] [2024-06-28 00:03:37,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438102394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:37,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:37,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:37,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935116337] [2024-06-28 00:03:37,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:37,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:37,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:37,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:37,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:37,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:37,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 1351 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 00:03:37,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:37,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:37,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:37,367 INFO L124 PetriNetUnfolderBase]: 353/627 cut-off events. [2024-06-28 00:03:37,367 INFO L125 PetriNetUnfolderBase]: For 23417/23417 co-relation queries the response was YES. [2024-06-28 00:03:37,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4217 conditions, 627 events. 353/627 cut-off events. For 23417/23417 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2676 event pairs, 67 based on Foata normal form. 2/628 useless extension candidates. Maximal degree in co-relation 4143. Up to 479 conditions per place. [2024-06-28 00:03:37,371 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 105 selfloop transitions, 43 changer transitions 0/150 dead transitions. [2024-06-28 00:03:37,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 150 transitions, 1793 flow [2024-06-28 00:03:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:37,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 00:03:37,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-28 00:03:37,373 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 1351 flow. Second operand 9 states and 109 transitions. [2024-06-28 00:03:37,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 150 transitions, 1793 flow [2024-06-28 00:03:37,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 150 transitions, 1702 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:37,418 INFO L231 Difference]: Finished difference. Result has 150 places, 136 transitions, 1375 flow [2024-06-28 00:03:37,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=150, PETRI_TRANSITIONS=136} [2024-06-28 00:03:37,418 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-06-28 00:03:37,418 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 136 transitions, 1375 flow [2024-06-28 00:03:37,419 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 00:03:37,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:37,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:37,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:03:37,419 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 00:03:37,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:37,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1250165721, now seen corresponding path program 6 times [2024-06-28 00:03:37,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:37,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933732787] [2024-06-28 00:03:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:38,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:38,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933732787] [2024-06-28 00:03:38,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933732787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:38,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:38,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:38,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696284978] [2024-06-28 00:03:38,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:38,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:38,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:38,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:38,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:38,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 136 transitions, 1375 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:38,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:38,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:38,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:39,132 INFO L124 PetriNetUnfolderBase]: 356/632 cut-off events. [2024-06-28 00:03:39,132 INFO L125 PetriNetUnfolderBase]: For 23819/23819 co-relation queries the response was YES. [2024-06-28 00:03:39,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 632 events. 356/632 cut-off events. For 23819/23819 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2702 event pairs, 71 based on Foata normal form. 1/632 useless extension candidates. Maximal degree in co-relation 4195. Up to 565 conditions per place. [2024-06-28 00:03:39,136 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 116 selfloop transitions, 29 changer transitions 0/147 dead transitions. [2024-06-28 00:03:39,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 147 transitions, 1711 flow [2024-06-28 00:03:39,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:39,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:03:39,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 00:03:39,137 INFO L175 Difference]: Start difference. First operand has 150 places, 136 transitions, 1375 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:03:39,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 147 transitions, 1711 flow [2024-06-28 00:03:39,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 147 transitions, 1641 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:39,179 INFO L231 Difference]: Finished difference. Result has 154 places, 138 transitions, 1396 flow [2024-06-28 00:03:39,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1396, PETRI_PLACES=154, PETRI_TRANSITIONS=138} [2024-06-28 00:03:39,180 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-28 00:03:39,180 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 138 transitions, 1396 flow [2024-06-28 00:03:39,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:39,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:39,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:39,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:03:39,180 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 00:03:39,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:39,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1250165535, now seen corresponding path program 3 times [2024-06-28 00:03:39,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:39,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9582218] [2024-06-28 00:03:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:39,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:40,327 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 00:03:40,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:40,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9582218] [2024-06-28 00:03:40,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9582218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:40,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:40,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:40,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016948468] [2024-06-28 00:03:40,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:40,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:40,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:40,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:40,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:40,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:40,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 138 transitions, 1396 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:40,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:40,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:40,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:40,793 INFO L124 PetriNetUnfolderBase]: 352/626 cut-off events. [2024-06-28 00:03:40,793 INFO L125 PetriNetUnfolderBase]: For 24243/24243 co-relation queries the response was YES. [2024-06-28 00:03:40,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4174 conditions, 626 events. 352/626 cut-off events. For 24243/24243 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2682 event pairs, 69 based on Foata normal form. 2/627 useless extension candidates. Maximal degree in co-relation 4098. Up to 481 conditions per place. [2024-06-28 00:03:40,810 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 113 selfloop transitions, 37 changer transitions 0/152 dead transitions. [2024-06-28 00:03:40,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 152 transitions, 1822 flow [2024-06-28 00:03:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:40,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 00:03:40,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-28 00:03:40,811 INFO L175 Difference]: Start difference. First operand has 154 places, 138 transitions, 1396 flow. Second operand 10 states and 119 transitions. [2024-06-28 00:03:40,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 152 transitions, 1822 flow [2024-06-28 00:03:40,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 1749 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:40,857 INFO L231 Difference]: Finished difference. Result has 156 places, 138 transitions, 1402 flow [2024-06-28 00:03:40,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1402, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2024-06-28 00:03:40,860 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2024-06-28 00:03:40,860 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 1402 flow [2024-06-28 00:03:40,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:40,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:40,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:40,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:03:40,862 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 00:03:40,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1810483043, now seen corresponding path program 4 times [2024-06-28 00:03:40,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:40,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186894228] [2024-06-28 00:03:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:40,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:42,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:42,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186894228] [2024-06-28 00:03:42,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186894228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:42,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:42,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:42,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669040721] [2024-06-28 00:03:42,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:42,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:42,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:42,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:42,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 138 transitions, 1402 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:42,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:42,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:42,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:42,595 INFO L124 PetriNetUnfolderBase]: 368/652 cut-off events. [2024-06-28 00:03:42,595 INFO L125 PetriNetUnfolderBase]: For 27197/27197 co-relation queries the response was YES. [2024-06-28 00:03:42,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 652 events. 368/652 cut-off events. For 27197/27197 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2815 event pairs, 67 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4370. Up to 586 conditions per place. [2024-06-28 00:03:42,600 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 129 selfloop transitions, 27 changer transitions 0/158 dead transitions. [2024-06-28 00:03:42,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 158 transitions, 1894 flow [2024-06-28 00:03:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:03:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:03:42,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 00:03:42,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 00:03:42,617 INFO L175 Difference]: Start difference. First operand has 156 places, 138 transitions, 1402 flow. Second operand 12 states and 129 transitions. [2024-06-28 00:03:42,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 158 transitions, 1894 flow [2024-06-28 00:03:42,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 158 transitions, 1812 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:42,678 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 1431 flow [2024-06-28 00:03:42,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1431, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2024-06-28 00:03:42,681 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-28 00:03:42,681 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 1431 flow [2024-06-28 00:03:42,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:42,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:42,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:42,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:03:42,682 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 00:03:42,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1629887197, now seen corresponding path program 7 times [2024-06-28 00:03:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:42,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432450507] [2024-06-28 00:03:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:42,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:43,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:43,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432450507] [2024-06-28 00:03:43,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432450507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:43,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:43,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:43,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398400535] [2024-06-28 00:03:43,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:43,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:43,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:43,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:43,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:44,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:44,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 1431 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:44,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:44,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:44,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:44,340 INFO L124 PetriNetUnfolderBase]: 371/657 cut-off events. [2024-06-28 00:03:44,340 INFO L125 PetriNetUnfolderBase]: For 27536/27536 co-relation queries the response was YES. [2024-06-28 00:03:44,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4482 conditions, 657 events. 371/657 cut-off events. For 27536/27536 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2841 event pairs, 71 based on Foata normal form. 1/657 useless extension candidates. Maximal degree in co-relation 4404. Up to 626 conditions per place. [2024-06-28 00:03:44,345 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 131 selfloop transitions, 19 changer transitions 0/152 dead transitions. [2024-06-28 00:03:44,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 152 transitions, 1777 flow [2024-06-28 00:03:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:44,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 00:03:44,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-28 00:03:44,346 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 1431 flow. Second operand 9 states and 98 transitions. [2024-06-28 00:03:44,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 152 transitions, 1777 flow [2024-06-28 00:03:44,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 152 transitions, 1735 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:44,402 INFO L231 Difference]: Finished difference. Result has 160 places, 144 transitions, 1464 flow [2024-06-28 00:03:44,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1464, PETRI_PLACES=160, PETRI_TRANSITIONS=144} [2024-06-28 00:03:44,403 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2024-06-28 00:03:44,403 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 144 transitions, 1464 flow [2024-06-28 00:03:44,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:44,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:44,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:44,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:03:44,403 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 00:03:44,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash 199906565, now seen corresponding path program 5 times [2024-06-28 00:03:44,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:44,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871881809] [2024-06-28 00:03:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:44,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:45,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:45,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871881809] [2024-06-28 00:03:45,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871881809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:45,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:45,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:45,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191394688] [2024-06-28 00:03:45,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:45,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:45,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:45,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:45,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:45,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:45,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 144 transitions, 1464 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:45,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:45,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:45,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:46,036 INFO L124 PetriNetUnfolderBase]: 367/651 cut-off events. [2024-06-28 00:03:46,036 INFO L125 PetriNetUnfolderBase]: For 27904/27904 co-relation queries the response was YES. [2024-06-28 00:03:46,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4411 conditions, 651 events. 367/651 cut-off events. For 27904/27904 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2831 event pairs, 68 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 4331. Up to 611 conditions per place. [2024-06-28 00:03:46,040 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 131 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-06-28 00:03:46,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 155 transitions, 1806 flow [2024-06-28 00:03:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 00:03:46,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-28 00:03:46,041 INFO L175 Difference]: Start difference. First operand has 160 places, 144 transitions, 1464 flow. Second operand 9 states and 101 transitions. [2024-06-28 00:03:46,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 155 transitions, 1806 flow [2024-06-28 00:03:46,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 155 transitions, 1749 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:46,096 INFO L231 Difference]: Finished difference. Result has 163 places, 146 transitions, 1481 flow [2024-06-28 00:03:46,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1481, PETRI_PLACES=163, PETRI_TRANSITIONS=146} [2024-06-28 00:03:46,097 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-28 00:03:46,097 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 146 transitions, 1481 flow [2024-06-28 00:03:46,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:46,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:46,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:46,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:03:46,098 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 00:03:46,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:46,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1345980881, now seen corresponding path program 6 times [2024-06-28 00:03:46,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:46,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356191418] [2024-06-28 00:03:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:46,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:47,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:47,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356191418] [2024-06-28 00:03:47,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356191418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:47,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:47,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:47,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298967075] [2024-06-28 00:03:47,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:47,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:47,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:47,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:47,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:47,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:47,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 146 transitions, 1481 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:47,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:47,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:47,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:47,657 INFO L124 PetriNetUnfolderBase]: 373/661 cut-off events. [2024-06-28 00:03:47,657 INFO L125 PetriNetUnfolderBase]: For 29183/29183 co-relation queries the response was YES. [2024-06-28 00:03:47,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 661 events. 373/661 cut-off events. For 29183/29183 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2875 event pairs, 67 based on Foata normal form. 2/662 useless extension candidates. Maximal degree in co-relation 4426. Up to 598 conditions per place. [2024-06-28 00:03:47,662 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 134 selfloop transitions, 24 changer transitions 0/160 dead transitions. [2024-06-28 00:03:47,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 160 transitions, 1945 flow [2024-06-28 00:03:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:03:47,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-28 00:03:47,663 INFO L175 Difference]: Start difference. First operand has 163 places, 146 transitions, 1481 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:03:47,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 160 transitions, 1945 flow [2024-06-28 00:03:47,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 160 transitions, 1910 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:47,733 INFO L231 Difference]: Finished difference. Result has 166 places, 148 transitions, 1523 flow [2024-06-28 00:03:47,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=156, 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=1523, PETRI_PLACES=166, PETRI_TRANSITIONS=148} [2024-06-28 00:03:47,734 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 137 predicate places. [2024-06-28 00:03:47,734 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 148 transitions, 1523 flow [2024-06-28 00:03:47,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:47,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:47,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:47,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:03:47,735 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 00:03:47,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:47,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1345981067, now seen corresponding path program 8 times [2024-06-28 00:03:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:47,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538762391] [2024-06-28 00:03:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:47,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:49,010 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 00:03:49,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:49,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538762391] [2024-06-28 00:03:49,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538762391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:49,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:49,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693322191] [2024-06-28 00:03:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:49,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:49,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:49,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:49,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:49,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:49,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 148 transitions, 1523 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:49,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:49,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:49,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:49,322 INFO L124 PetriNetUnfolderBase]: 371/658 cut-off events. [2024-06-28 00:03:49,322 INFO L125 PetriNetUnfolderBase]: For 28586/28586 co-relation queries the response was YES. [2024-06-28 00:03:49,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4497 conditions, 658 events. 371/658 cut-off events. For 28586/28586 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2863 event pairs, 70 based on Foata normal form. 1/658 useless extension candidates. Maximal degree in co-relation 4414. Up to 633 conditions per place. [2024-06-28 00:03:49,329 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 138 selfloop transitions, 16 changer transitions 0/156 dead transitions. [2024-06-28 00:03:49,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 156 transitions, 1849 flow [2024-06-28 00:03:49,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 00:03:49,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-28 00:03:49,330 INFO L175 Difference]: Start difference. First operand has 166 places, 148 transitions, 1523 flow. Second operand 9 states and 96 transitions. [2024-06-28 00:03:49,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 156 transitions, 1849 flow [2024-06-28 00:03:49,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 156 transitions, 1708 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 00:03:49,388 INFO L231 Difference]: Finished difference. Result has 164 places, 148 transitions, 1419 flow [2024-06-28 00:03:49,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1419, PETRI_PLACES=164, PETRI_TRANSITIONS=148} [2024-06-28 00:03:49,388 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-28 00:03:49,388 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 148 transitions, 1419 flow [2024-06-28 00:03:49,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:49,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:49,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:49,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:03:49,389 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 00:03:49,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:49,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1857795043, now seen corresponding path program 7 times [2024-06-28 00:03:49,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:49,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128058319] [2024-06-28 00:03:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:49,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:50,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:50,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128058319] [2024-06-28 00:03:50,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128058319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:50,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:50,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:50,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636371027] [2024-06-28 00:03:50,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:50,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:50,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:50,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:50,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:50,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:50,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 148 transitions, 1419 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:50,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:50,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:50,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:51,165 INFO L124 PetriNetUnfolderBase]: 372/660 cut-off events. [2024-06-28 00:03:51,165 INFO L125 PetriNetUnfolderBase]: For 29442/29442 co-relation queries the response was YES. [2024-06-28 00:03:51,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 660 events. 372/660 cut-off events. For 29442/29442 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2879 event pairs, 67 based on Foata normal form. 2/661 useless extension candidates. Maximal degree in co-relation 4275. Up to 598 conditions per place. [2024-06-28 00:03:51,170 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 135 selfloop transitions, 24 changer transitions 0/161 dead transitions. [2024-06-28 00:03:51,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 161 transitions, 1875 flow [2024-06-28 00:03:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:03:51,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 00:03:51,171 INFO L175 Difference]: Start difference. First operand has 164 places, 148 transitions, 1419 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:03:51,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 161 transitions, 1875 flow [2024-06-28 00:03:51,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 161 transitions, 1830 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:51,234 INFO L231 Difference]: Finished difference. Result has 167 places, 150 transitions, 1443 flow [2024-06-28 00:03:51,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1443, PETRI_PLACES=167, PETRI_TRANSITIONS=150} [2024-06-28 00:03:51,235 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-28 00:03:51,235 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 150 transitions, 1443 flow [2024-06-28 00:03:51,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:51,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:51,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:51,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:03:51,235 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 00:03:51,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:51,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1866069253, now seen corresponding path program 8 times [2024-06-28 00:03:51,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:51,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532141410] [2024-06-28 00:03:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:51,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:52,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:52,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532141410] [2024-06-28 00:03:52,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532141410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:52,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:52,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:52,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027910125] [2024-06-28 00:03:52,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:52,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:52,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:52,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:52,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:52,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:03:52,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 150 transitions, 1443 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:52,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:52,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:03:52,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:52,689 INFO L124 PetriNetUnfolderBase]: 366/651 cut-off events. [2024-06-28 00:03:52,689 INFO L125 PetriNetUnfolderBase]: For 28643/28643 co-relation queries the response was YES. [2024-06-28 00:03:52,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 651 events. 366/651 cut-off events. For 28643/28643 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2832 event pairs, 69 based on Foata normal form. 3/653 useless extension candidates. Maximal degree in co-relation 4138. Up to 609 conditions per place. [2024-06-28 00:03:52,694 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 23 changer transitions 0/160 dead transitions. [2024-06-28 00:03:52,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 160 transitions, 1797 flow [2024-06-28 00:03:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:52,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 00:03:52,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 00:03:52,695 INFO L175 Difference]: Start difference. First operand has 167 places, 150 transitions, 1443 flow. Second operand 10 states and 105 transitions. [2024-06-28 00:03:52,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 160 transitions, 1797 flow [2024-06-28 00:03:52,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 160 transitions, 1755 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:52,747 INFO L231 Difference]: Finished difference. Result has 170 places, 152 transitions, 1481 flow [2024-06-28 00:03:52,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1481, PETRI_PLACES=170, PETRI_TRANSITIONS=152} [2024-06-28 00:03:52,747 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2024-06-28 00:03:52,748 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 152 transitions, 1481 flow [2024-06-28 00:03:52,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:52,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:52,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:52,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:03:52,748 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 00:03:52,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1599398589, now seen corresponding path program 4 times [2024-06-28 00:03:52,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:52,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228638327] [2024-06-28 00:03:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:52,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:54,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:54,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228638327] [2024-06-28 00:03:54,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228638327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:54,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:54,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:54,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175908158] [2024-06-28 00:03:54,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:54,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:54,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:54,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:54,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:03:54,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 152 transitions, 1481 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:03:54,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:54,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:03:54,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:54,315 INFO L124 PetriNetUnfolderBase]: 370/659 cut-off events. [2024-06-28 00:03:54,315 INFO L125 PetriNetUnfolderBase]: For 28787/28787 co-relation queries the response was YES. [2024-06-28 00:03:54,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4298 conditions, 659 events. 370/659 cut-off events. For 28787/28787 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2886 event pairs, 27 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4214. Up to 480 conditions per place. [2024-06-28 00:03:54,320 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 129 selfloop transitions, 37 changer transitions 0/168 dead transitions. [2024-06-28 00:03:54,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 1959 flow [2024-06-28 00:03:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:03:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:03:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-28 00:03:54,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-28 00:03:54,321 INFO L175 Difference]: Start difference. First operand has 170 places, 152 transitions, 1481 flow. Second operand 7 states and 97 transitions. [2024-06-28 00:03:54,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 1959 flow [2024-06-28 00:03:54,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 168 transitions, 1909 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:54,380 INFO L231 Difference]: Finished difference. Result has 169 places, 153 transitions, 1523 flow [2024-06-28 00:03:54,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1523, PETRI_PLACES=169, PETRI_TRANSITIONS=153} [2024-06-28 00:03:54,380 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-28 00:03:54,380 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 153 transitions, 1523 flow [2024-06-28 00:03:54,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:03:54,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:54,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:54,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:03:54,381 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 00:03:54,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:54,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1599459163, now seen corresponding path program 9 times [2024-06-28 00:03:54,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:54,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146682047] [2024-06-28 00:03:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:54,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:55,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:55,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146682047] [2024-06-28 00:03:55,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146682047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:55,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:55,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:55,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955642899] [2024-06-28 00:03:55,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:55,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:55,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:55,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:55,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:55,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:03:55,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 153 transitions, 1523 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:03:55,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:55,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:03:55,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:55,861 INFO L124 PetriNetUnfolderBase]: 373/664 cut-off events. [2024-06-28 00:03:55,861 INFO L125 PetriNetUnfolderBase]: For 28909/28909 co-relation queries the response was YES. [2024-06-28 00:03:55,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4413 conditions, 664 events. 373/664 cut-off events. For 28909/28909 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2906 event pairs, 51 based on Foata normal form. 1/664 useless extension candidates. Maximal degree in co-relation 4329. Up to 486 conditions per place. [2024-06-28 00:03:55,866 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 107 selfloop transitions, 61 changer transitions 0/170 dead transitions. [2024-06-28 00:03:55,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 170 transitions, 2019 flow [2024-06-28 00:03:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 00:03:55,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 00:03:55,867 INFO L175 Difference]: Start difference. First operand has 169 places, 153 transitions, 1523 flow. Second operand 8 states and 108 transitions. [2024-06-28 00:03:55,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 170 transitions, 2019 flow [2024-06-28 00:03:55,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 170 transitions, 1944 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:55,934 INFO L231 Difference]: Finished difference. Result has 172 places, 157 transitions, 1612 flow [2024-06-28 00:03:55,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1612, PETRI_PLACES=172, PETRI_TRANSITIONS=157} [2024-06-28 00:03:55,934 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2024-06-28 00:03:55,934 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 157 transitions, 1612 flow [2024-06-28 00:03:55,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:03:55,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:55,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:55,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:03:55,935 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 00:03:55,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:55,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1962313419, now seen corresponding path program 5 times [2024-06-28 00:03:55,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:55,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330922668] [2024-06-28 00:03:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:55,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:57,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:57,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330922668] [2024-06-28 00:03:57,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330922668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:57,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:57,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:57,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412824935] [2024-06-28 00:03:57,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:57,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:57,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:57,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:57,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:03:57,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 157 transitions, 1612 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:03:57,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:57,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:03:57,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:57,511 INFO L124 PetriNetUnfolderBase]: 377/672 cut-off events. [2024-06-28 00:03:57,511 INFO L125 PetriNetUnfolderBase]: For 30192/30192 co-relation queries the response was YES. [2024-06-28 00:03:57,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 672 events. 377/672 cut-off events. For 30192/30192 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2965 event pairs, 46 based on Foata normal form. 2/673 useless extension candidates. Maximal degree in co-relation 4407. Up to 560 conditions per place. [2024-06-28 00:03:57,516 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 136 selfloop transitions, 33 changer transitions 0/171 dead transitions. [2024-06-28 00:03:57,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 171 transitions, 1995 flow [2024-06-28 00:03:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-28 00:03:57,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:03:57,517 INFO L175 Difference]: Start difference. First operand has 172 places, 157 transitions, 1612 flow. Second operand 8 states and 104 transitions. [2024-06-28 00:03:57,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 171 transitions, 1995 flow [2024-06-28 00:03:57,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 171 transitions, 1917 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:57,574 INFO L231 Difference]: Finished difference. Result has 174 places, 158 transitions, 1617 flow [2024-06-28 00:03:57,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1617, PETRI_PLACES=174, PETRI_TRANSITIONS=158} [2024-06-28 00:03:57,575 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-28 00:03:57,575 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 158 transitions, 1617 flow [2024-06-28 00:03:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:03:57,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:57,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:57,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:03:57,575 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 00:03:57,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:57,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1974945733, now seen corresponding path program 10 times [2024-06-28 00:03:57,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:57,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397098965] [2024-06-28 00:03:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:57,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:58,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:58,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397098965] [2024-06-28 00:03:58,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397098965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:58,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:58,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:58,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016435301] [2024-06-28 00:03:58,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:58,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:58,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:58,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:58,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:58,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:03:58,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 158 transitions, 1617 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 00:03:58,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:58,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:03:58,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:59,241 INFO L124 PetriNetUnfolderBase]: 386/687 cut-off events. [2024-06-28 00:03:59,242 INFO L125 PetriNetUnfolderBase]: For 31229/31229 co-relation queries the response was YES. [2024-06-28 00:03:59,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4553 conditions, 687 events. 386/687 cut-off events. For 31229/31229 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3045 event pairs, 48 based on Foata normal form. 3/689 useless extension candidates. Maximal degree in co-relation 4468. Up to 449 conditions per place. [2024-06-28 00:03:59,247 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 106 selfloop transitions, 67 changer transitions 0/175 dead transitions. [2024-06-28 00:03:59,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 2135 flow [2024-06-28 00:03:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 00:03:59,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 00:03:59,248 INFO L175 Difference]: Start difference. First operand has 174 places, 158 transitions, 1617 flow. Second operand 8 states and 112 transitions. [2024-06-28 00:03:59,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 2135 flow [2024-06-28 00:03:59,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 175 transitions, 2063 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:59,316 INFO L231 Difference]: Finished difference. Result has 175 places, 162 transitions, 1735 flow [2024-06-28 00:03:59,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1735, PETRI_PLACES=175, PETRI_TRANSITIONS=162} [2024-06-28 00:03:59,316 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-28 00:03:59,316 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 162 transitions, 1735 flow [2024-06-28 00:03:59,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 00:03:59,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:59,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:59,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:03:59,317 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 00:03:59,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:59,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1602255673, now seen corresponding path program 11 times [2024-06-28 00:03:59,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:59,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426506049] [2024-06-28 00:03:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:59,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:00,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:00,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426506049] [2024-06-28 00:04:00,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426506049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:00,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:00,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654822212] [2024-06-28 00:04:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:00,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:00,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:00,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:00,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:00,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:04:00,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 162 transitions, 1735 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:04:00,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:00,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:04:00,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:00,819 INFO L124 PetriNetUnfolderBase]: 389/692 cut-off events. [2024-06-28 00:04:00,819 INFO L125 PetriNetUnfolderBase]: For 29079/29079 co-relation queries the response was YES. [2024-06-28 00:04:00,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 692 events. 389/692 cut-off events. For 29079/29079 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3088 event pairs, 49 based on Foata normal form. 1/692 useless extension candidates. Maximal degree in co-relation 4616. Up to 570 conditions per place. [2024-06-28 00:04:00,823 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 120 selfloop transitions, 51 changer transitions 0/173 dead transitions. [2024-06-28 00:04:00,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 173 transitions, 2119 flow [2024-06-28 00:04:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:00,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-28 00:04:00,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 00:04:00,824 INFO L175 Difference]: Start difference. First operand has 175 places, 162 transitions, 1735 flow. Second operand 7 states and 98 transitions. [2024-06-28 00:04:00,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 173 transitions, 2119 flow [2024-06-28 00:04:00,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 173 transitions, 1974 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:00,896 INFO L231 Difference]: Finished difference. Result has 175 places, 164 transitions, 1724 flow [2024-06-28 00:04:00,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1724, PETRI_PLACES=175, PETRI_TRANSITIONS=164} [2024-06-28 00:04:00,897 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-28 00:04:00,897 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 164 transitions, 1724 flow [2024-06-28 00:04:00,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:04:00,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:00,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:00,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:04:00,899 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 00:04:00,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1602255549, now seen corresponding path program 6 times [2024-06-28 00:04:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:00,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054582789] [2024-06-28 00:04:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:02,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:02,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054582789] [2024-06-28 00:04:02,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054582789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:02,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:02,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:02,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448352388] [2024-06-28 00:04:02,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:02,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:02,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:02,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:02,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:02,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:04:02,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 164 transitions, 1724 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:04:02,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:02,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:04:02,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:02,568 INFO L124 PetriNetUnfolderBase]: 386/687 cut-off events. [2024-06-28 00:04:02,568 INFO L125 PetriNetUnfolderBase]: For 27850/27850 co-relation queries the response was YES. [2024-06-28 00:04:02,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 687 events. 386/687 cut-off events. For 27850/27850 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3051 event pairs, 45 based on Foata normal form. 2/688 useless extension candidates. Maximal degree in co-relation 4443. Up to 604 conditions per place. [2024-06-28 00:04:02,573 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 143 selfloop transitions, 29 changer transitions 0/174 dead transitions. [2024-06-28 00:04:02,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 174 transitions, 2092 flow [2024-06-28 00:04:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:02,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-28 00:04:02,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-28 00:04:02,574 INFO L175 Difference]: Start difference. First operand has 175 places, 164 transitions, 1724 flow. Second operand 7 states and 94 transitions. [2024-06-28 00:04:02,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 174 transitions, 2092 flow [2024-06-28 00:04:02,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 174 transitions, 1993 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:02,637 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 1689 flow [2024-06-28 00:04:02,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1689, PETRI_PLACES=177, PETRI_TRANSITIONS=164} [2024-06-28 00:04:02,637 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 148 predicate places. [2024-06-28 00:04:02,638 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 1689 flow [2024-06-28 00:04:02,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:04:02,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:02,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:02,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:04:02,638 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 00:04:02,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:02,639 INFO L85 PathProgramCache]: Analyzing trace with hash 745349549, now seen corresponding path program 12 times [2024-06-28 00:04:02,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:02,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137685223] [2024-06-28 00:04:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:02,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:03,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:03,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:03,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137685223] [2024-06-28 00:04:03,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137685223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:03,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:03,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:03,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907379149] [2024-06-28 00:04:03,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:03,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:03,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:03,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:03,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:03,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:04:03,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 164 transitions, 1689 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:04:03,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:03,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:04:03,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:04,176 INFO L124 PetriNetUnfolderBase]: 389/693 cut-off events. [2024-06-28 00:04:04,176 INFO L125 PetriNetUnfolderBase]: For 26594/26594 co-relation queries the response was YES. [2024-06-28 00:04:04,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4522 conditions, 693 events. 389/693 cut-off events. For 26594/26594 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3097 event pairs, 46 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 4438. Up to 541 conditions per place. [2024-06-28 00:04:04,182 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 116 selfloop transitions, 64 changer transitions 0/182 dead transitions. [2024-06-28 00:04:04,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 182 transitions, 2219 flow [2024-06-28 00:04:04,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:04,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-28 00:04:04,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-28 00:04:04,183 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 1689 flow. Second operand 8 states and 113 transitions. [2024-06-28 00:04:04,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 182 transitions, 2219 flow [2024-06-28 00:04:04,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 182 transitions, 2141 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:04,248 INFO L231 Difference]: Finished difference. Result has 178 places, 166 transitions, 1773 flow [2024-06-28 00:04:04,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1773, PETRI_PLACES=178, PETRI_TRANSITIONS=166} [2024-06-28 00:04:04,250 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2024-06-28 00:04:04,250 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 166 transitions, 1773 flow [2024-06-28 00:04:04,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:04:04,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:04,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:04,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:04:04,251 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 00:04:04,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash 737310629, now seen corresponding path program 13 times [2024-06-28 00:04:04,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:04,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388208139] [2024-06-28 00:04:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:04,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:05,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:05,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388208139] [2024-06-28 00:04:05,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388208139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:05,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:05,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:05,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312147724] [2024-06-28 00:04:05,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:05,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:05,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:05,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:05,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:04:05,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 166 transitions, 1773 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:04:05,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:05,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:04:05,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:05,719 INFO L124 PetriNetUnfolderBase]: 392/700 cut-off events. [2024-06-28 00:04:05,719 INFO L125 PetriNetUnfolderBase]: For 26584/26584 co-relation queries the response was YES. [2024-06-28 00:04:05,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 700 events. 392/700 cut-off events. For 26584/26584 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3140 event pairs, 60 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 4530. Up to 587 conditions per place. [2024-06-28 00:04:05,725 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 129 selfloop transitions, 49 changer transitions 0/180 dead transitions. [2024-06-28 00:04:05,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 180 transitions, 2193 flow [2024-06-28 00:04:05,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-28 00:04:05,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 00:04:05,726 INFO L175 Difference]: Start difference. First operand has 178 places, 166 transitions, 1773 flow. Second operand 7 states and 100 transitions. [2024-06-28 00:04:05,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 180 transitions, 2193 flow [2024-06-28 00:04:05,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 180 transitions, 2034 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:05,820 INFO L231 Difference]: Finished difference. Result has 178 places, 168 transitions, 1752 flow [2024-06-28 00:04:05,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1618, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1752, PETRI_PLACES=178, PETRI_TRANSITIONS=168} [2024-06-28 00:04:05,821 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2024-06-28 00:04:05,821 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 168 transitions, 1752 flow [2024-06-28 00:04:05,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 00:04:05,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:05,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:05,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:04:05,821 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 00:04:05,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash 737490305, now seen corresponding path program 9 times [2024-06-28 00:04:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817431890] [2024-06-28 00:04:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:07,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817431890] [2024-06-28 00:04:07,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817431890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:07,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:07,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:07,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926137399] [2024-06-28 00:04:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:07,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:07,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:07,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:07,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:07,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:07,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 168 transitions, 1752 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:07,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:07,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:07,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:07,909 INFO L124 PetriNetUnfolderBase]: 408/723 cut-off events. [2024-06-28 00:04:07,909 INFO L125 PetriNetUnfolderBase]: For 30048/30048 co-relation queries the response was YES. [2024-06-28 00:04:07,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4756 conditions, 723 events. 408/723 cut-off events. For 30048/30048 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3258 event pairs, 49 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 4672. Up to 492 conditions per place. [2024-06-28 00:04:07,914 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 129 selfloop transitions, 62 changer transitions 0/193 dead transitions. [2024-06-28 00:04:07,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 193 transitions, 2422 flow [2024-06-28 00:04:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:04:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:04:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 00:04:07,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 00:04:07,915 INFO L175 Difference]: Start difference. First operand has 178 places, 168 transitions, 1752 flow. Second operand 12 states and 147 transitions. [2024-06-28 00:04:07,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 193 transitions, 2422 flow [2024-06-28 00:04:07,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 193 transitions, 2309 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:07,991 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 1800 flow [2024-06-28 00:04:07,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1800, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2024-06-28 00:04:07,992 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-28 00:04:07,992 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1800 flow [2024-06-28 00:04:07,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:07,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:07,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:07,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:04:07,992 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 00:04:07,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:07,994 INFO L85 PathProgramCache]: Analyzing trace with hash 745354385, now seen corresponding path program 10 times [2024-06-28 00:04:07,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:07,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749024817] [2024-06-28 00:04:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:07,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:09,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:09,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749024817] [2024-06-28 00:04:09,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749024817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:09,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:09,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:09,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096574806] [2024-06-28 00:04:09,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:09,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:09,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:09,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:09,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:09,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:09,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1800 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 00:04:09,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:09,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:09,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:09,705 INFO L124 PetriNetUnfolderBase]: 404/717 cut-off events. [2024-06-28 00:04:09,705 INFO L125 PetriNetUnfolderBase]: For 27856/27856 co-relation queries the response was YES. [2024-06-28 00:04:09,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4689 conditions, 717 events. 404/717 cut-off events. For 27856/27856 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3222 event pairs, 50 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 4604. Up to 489 conditions per place. [2024-06-28 00:04:09,710 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 127 selfloop transitions, 60 changer transitions 0/189 dead transitions. [2024-06-28 00:04:09,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 189 transitions, 2328 flow [2024-06-28 00:04:09,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:04:09,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-06-28 00:04:09,711 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 1800 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:04:09,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 189 transitions, 2328 flow [2024-06-28 00:04:09,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 189 transitions, 2191 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:09,779 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 1788 flow [2024-06-28 00:04:09,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2024-06-28 00:04:09,780 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-28 00:04:09,780 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1788 flow [2024-06-28 00:04:09,780 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 00:04:09,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:09,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:09,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:04:09,781 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 00:04:09,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:09,781 INFO L85 PathProgramCache]: Analyzing trace with hash 737483609, now seen corresponding path program 14 times [2024-06-28 00:04:09,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:09,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937411405] [2024-06-28 00:04:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:09,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:11,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:11,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:11,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937411405] [2024-06-28 00:04:11,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937411405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:11,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:11,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:11,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666045283] [2024-06-28 00:04:11,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:11,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:11,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:11,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:11,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:11,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:04:11,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1788 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 00:04:11,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:11,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:04:11,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:11,456 INFO L124 PetriNetUnfolderBase]: 402/714 cut-off events. [2024-06-28 00:04:11,456 INFO L125 PetriNetUnfolderBase]: For 26575/26575 co-relation queries the response was YES. [2024-06-28 00:04:11,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4625 conditions, 714 events. 402/714 cut-off events. For 26575/26575 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3206 event pairs, 49 based on Foata normal form. 1/714 useless extension candidates. Maximal degree in co-relation 4539. Up to 604 conditions per place. [2024-06-28 00:04:11,464 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 135 selfloop transitions, 45 changer transitions 0/182 dead transitions. [2024-06-28 00:04:11,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 182 transitions, 2172 flow [2024-06-28 00:04:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-28 00:04:11,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-28 00:04:11,465 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 1788 flow. Second operand 8 states and 107 transitions. [2024-06-28 00:04:11,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 182 transitions, 2172 flow [2024-06-28 00:04:11,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 182 transitions, 2035 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:11,536 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 1749 flow [2024-06-28 00:04:11,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1749, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2024-06-28 00:04:11,538 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-28 00:04:11,538 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1749 flow [2024-06-28 00:04:11,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 00:04:11,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:11,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:11,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:04:11,539 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 00:04:11,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash 349604975, now seen corresponding path program 11 times [2024-06-28 00:04:11,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:11,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760481274] [2024-06-28 00:04:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:11,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:12,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:12,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760481274] [2024-06-28 00:04:12,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760481274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:12,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:12,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:12,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755611602] [2024-06-28 00:04:12,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:12,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:12,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:12,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:12,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:12,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1749 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:12,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:12,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:12,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:13,405 INFO L124 PetriNetUnfolderBase]: 398/708 cut-off events. [2024-06-28 00:04:13,405 INFO L125 PetriNetUnfolderBase]: For 26127/26127 co-relation queries the response was YES. [2024-06-28 00:04:13,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 708 events. 398/708 cut-off events. For 26127/26127 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3193 event pairs, 47 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 4380. Up to 483 conditions per place. [2024-06-28 00:04:13,412 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 126 selfloop transitions, 61 changer transitions 0/189 dead transitions. [2024-06-28 00:04:13,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 189 transitions, 2183 flow [2024-06-28 00:04:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:04:13,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-28 00:04:13,413 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 1749 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:04:13,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 189 transitions, 2183 flow [2024-06-28 00:04:13,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 189 transitions, 2035 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:13,473 INFO L231 Difference]: Finished difference. Result has 185 places, 172 transitions, 1728 flow [2024-06-28 00:04:13,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1728, PETRI_PLACES=185, PETRI_TRANSITIONS=172} [2024-06-28 00:04:13,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-28 00:04:13,474 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 172 transitions, 1728 flow [2024-06-28 00:04:13,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:13,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:13,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:13,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:04:13,474 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 00:04:13,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1203455895, now seen corresponding path program 1 times [2024-06-28 00:04:13,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:13,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570101528] [2024-06-28 00:04:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:13,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:15,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:15,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570101528] [2024-06-28 00:04:15,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570101528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:15,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:15,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:15,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744077668] [2024-06-28 00:04:15,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:15,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:15,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:15,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:15,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:15,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 172 transitions, 1728 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 00:04:15,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:15,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:15,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:15,450 INFO L124 PetriNetUnfolderBase]: 409/729 cut-off events. [2024-06-28 00:04:15,450 INFO L125 PetriNetUnfolderBase]: For 28717/28717 co-relation queries the response was YES. [2024-06-28 00:04:15,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4601 conditions, 729 events. 409/729 cut-off events. For 28717/28717 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3316 event pairs, 83 based on Foata normal form. 2/730 useless extension candidates. Maximal degree in co-relation 4515. Up to 548 conditions per place. [2024-06-28 00:04:15,455 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 142 selfloop transitions, 45 changer transitions 0/189 dead transitions. [2024-06-28 00:04:15,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 189 transitions, 2252 flow [2024-06-28 00:04:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 00:04:15,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-28 00:04:15,456 INFO L175 Difference]: Start difference. First operand has 185 places, 172 transitions, 1728 flow. Second operand 9 states and 109 transitions. [2024-06-28 00:04:15,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 189 transitions, 2252 flow [2024-06-28 00:04:15,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 189 transitions, 2130 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:15,516 INFO L231 Difference]: Finished difference. Result has 185 places, 174 transitions, 1714 flow [2024-06-28 00:04:15,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1714, PETRI_PLACES=185, PETRI_TRANSITIONS=174} [2024-06-28 00:04:15,516 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-28 00:04:15,516 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 174 transitions, 1714 flow [2024-06-28 00:04:15,516 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 00:04:15,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:15,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:15,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:04:15,517 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 00:04:15,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1205333565, now seen corresponding path program 2 times [2024-06-28 00:04:15,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:15,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267633491] [2024-06-28 00:04:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:15,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:17,033 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 00:04:17,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:17,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267633491] [2024-06-28 00:04:17,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267633491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:17,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:17,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7790175] [2024-06-28 00:04:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:17,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:17,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:17,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 174 transitions, 1714 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 00:04:17,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:17,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:17,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:17,391 INFO L124 PetriNetUnfolderBase]: 413/737 cut-off events. [2024-06-28 00:04:17,392 INFO L125 PetriNetUnfolderBase]: For 29588/29588 co-relation queries the response was YES. [2024-06-28 00:04:17,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4606 conditions, 737 events. 413/737 cut-off events. For 29588/29588 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3386 event pairs, 91 based on Foata normal form. 2/738 useless extension candidates. Maximal degree in co-relation 4519. Up to 629 conditions per place. [2024-06-28 00:04:17,398 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 140 selfloop transitions, 44 changer transitions 0/186 dead transitions. [2024-06-28 00:04:17,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 186 transitions, 2118 flow [2024-06-28 00:04:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 00:04:17,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 00:04:17,399 INFO L175 Difference]: Start difference. First operand has 185 places, 174 transitions, 1714 flow. Second operand 9 states and 105 transitions. [2024-06-28 00:04:17,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 186 transitions, 2118 flow [2024-06-28 00:04:17,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 186 transitions, 2051 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:17,479 INFO L231 Difference]: Finished difference. Result has 189 places, 175 transitions, 1749 flow [2024-06-28 00:04:17,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1749, PETRI_PLACES=189, PETRI_TRANSITIONS=175} [2024-06-28 00:04:17,480 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-28 00:04:17,480 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 175 transitions, 1749 flow [2024-06-28 00:04:17,480 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 00:04:17,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:17,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:17,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:04:17,481 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 00:04:17,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:17,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1205329845, now seen corresponding path program 3 times [2024-06-28 00:04:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:17,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396501074] [2024-06-28 00:04:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:17,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:19,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:19,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396501074] [2024-06-28 00:04:19,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396501074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:19,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:19,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:19,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466256946] [2024-06-28 00:04:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:19,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:19,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:19,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:19,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:19,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:19,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 175 transitions, 1749 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 00:04:19,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:19,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:19,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:19,471 INFO L124 PetriNetUnfolderBase]: 417/745 cut-off events. [2024-06-28 00:04:19,471 INFO L125 PetriNetUnfolderBase]: For 30682/30682 co-relation queries the response was YES. [2024-06-28 00:04:19,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4699 conditions, 745 events. 417/745 cut-off events. For 30682/30682 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3433 event pairs, 89 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4610. Up to 623 conditions per place. [2024-06-28 00:04:19,478 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 141 selfloop transitions, 45 changer transitions 0/188 dead transitions. [2024-06-28 00:04:19,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 188 transitions, 2157 flow [2024-06-28 00:04:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 00:04:19,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-28 00:04:19,479 INFO L175 Difference]: Start difference. First operand has 189 places, 175 transitions, 1749 flow. Second operand 9 states and 107 transitions. [2024-06-28 00:04:19,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 188 transitions, 2157 flow [2024-06-28 00:04:19,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 188 transitions, 2071 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:19,540 INFO L231 Difference]: Finished difference. Result has 191 places, 176 transitions, 1765 flow [2024-06-28 00:04:19,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1765, PETRI_PLACES=191, PETRI_TRANSITIONS=176} [2024-06-28 00:04:19,540 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-28 00:04:19,541 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 176 transitions, 1765 flow [2024-06-28 00:04:19,541 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 00:04:19,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:19,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:19,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:04:19,541 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 00:04:19,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:19,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1691028296, now seen corresponding path program 1 times [2024-06-28 00:04:19,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:19,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098516619] [2024-06-28 00:04:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:19,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:21,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:21,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098516619] [2024-06-28 00:04:21,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098516619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:21,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:21,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:21,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656167906] [2024-06-28 00:04:21,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:21,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:21,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:21,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:21,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:21,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:21,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 176 transitions, 1765 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 00:04:21,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:21,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:21,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:21,476 INFO L124 PetriNetUnfolderBase]: 439/781 cut-off events. [2024-06-28 00:04:21,476 INFO L125 PetriNetUnfolderBase]: For 34833/34833 co-relation queries the response was YES. [2024-06-28 00:04:21,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5000 conditions, 781 events. 439/781 cut-off events. For 34833/34833 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3631 event pairs, 97 based on Foata normal form. 2/782 useless extension candidates. Maximal degree in co-relation 4910. Up to 512 conditions per place. [2024-06-28 00:04:21,482 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 132 selfloop transitions, 62 changer transitions 0/196 dead transitions. [2024-06-28 00:04:21,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 196 transitions, 2359 flow [2024-06-28 00:04:21,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:21,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 00:04:21,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-28 00:04:21,483 INFO L175 Difference]: Start difference. First operand has 191 places, 176 transitions, 1765 flow. Second operand 10 states and 119 transitions. [2024-06-28 00:04:21,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 196 transitions, 2359 flow [2024-06-28 00:04:21,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 196 transitions, 2269 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:21,565 INFO L231 Difference]: Finished difference. Result has 195 places, 182 transitions, 1898 flow [2024-06-28 00:04:21,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1898, PETRI_PLACES=195, PETRI_TRANSITIONS=182} [2024-06-28 00:04:21,566 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-28 00:04:21,566 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 182 transitions, 1898 flow [2024-06-28 00:04:21,566 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 00:04:21,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:21,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:21,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:04:21,566 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 00:04:21,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:21,567 INFO L85 PathProgramCache]: Analyzing trace with hash 972860179, now seen corresponding path program 4 times [2024-06-28 00:04:21,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:21,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55572099] [2024-06-28 00:04:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:21,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:23,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:23,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55572099] [2024-06-28 00:04:23,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55572099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:23,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:23,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698543678] [2024-06-28 00:04:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:23,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:23,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:23,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:23,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:23,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 182 transitions, 1898 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 00:04:23,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:23,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:23,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:23,465 INFO L124 PetriNetUnfolderBase]: 443/789 cut-off events. [2024-06-28 00:04:23,465 INFO L125 PetriNetUnfolderBase]: For 36431/36431 co-relation queries the response was YES. [2024-06-28 00:04:23,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5176 conditions, 789 events. 443/789 cut-off events. For 36431/36431 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3695 event pairs, 98 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 5084. Up to 707 conditions per place. [2024-06-28 00:04:23,471 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 157 selfloop transitions, 34 changer transitions 0/193 dead transitions. [2024-06-28 00:04:23,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 193 transitions, 2312 flow [2024-06-28 00:04:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 00:04:23,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-28 00:04:23,472 INFO L175 Difference]: Start difference. First operand has 195 places, 182 transitions, 1898 flow. Second operand 9 states and 106 transitions. [2024-06-28 00:04:23,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 193 transitions, 2312 flow [2024-06-28 00:04:23,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 193 transitions, 2235 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:23,541 INFO L231 Difference]: Finished difference. Result has 198 places, 183 transitions, 1903 flow [2024-06-28 00:04:23,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1903, PETRI_PLACES=198, PETRI_TRANSITIONS=183} [2024-06-28 00:04:23,542 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 169 predicate places. [2024-06-28 00:04:23,542 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 183 transitions, 1903 flow [2024-06-28 00:04:23,542 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 00:04:23,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:23,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:23,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:04:23,542 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 00:04:23,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash 615147974, now seen corresponding path program 2 times [2024-06-28 00:04:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:23,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281547649] [2024-06-28 00:04:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:23,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:24,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:24,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281547649] [2024-06-28 00:04:24,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281547649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:24,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:24,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:24,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957491297] [2024-06-28 00:04:24,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:24,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:24,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:25,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:25,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 183 transitions, 1903 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 00:04:25,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:25,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:25,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:25,391 INFO L124 PetriNetUnfolderBase]: 449/799 cut-off events. [2024-06-28 00:04:25,391 INFO L125 PetriNetUnfolderBase]: For 37813/37813 co-relation queries the response was YES. [2024-06-28 00:04:25,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 799 events. 449/799 cut-off events. For 37813/37813 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3753 event pairs, 99 based on Foata normal form. 2/800 useless extension candidates. Maximal degree in co-relation 5199. Up to 708 conditions per place. [2024-06-28 00:04:25,397 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 154 selfloop transitions, 39 changer transitions 0/195 dead transitions. [2024-06-28 00:04:25,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 195 transitions, 2341 flow [2024-06-28 00:04:25,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 00:04:25,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-28 00:04:25,397 INFO L175 Difference]: Start difference. First operand has 198 places, 183 transitions, 1903 flow. Second operand 9 states and 109 transitions. [2024-06-28 00:04:25,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 195 transitions, 2341 flow [2024-06-28 00:04:25,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 195 transitions, 2271 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:25,484 INFO L231 Difference]: Finished difference. Result has 200 places, 185 transitions, 1944 flow [2024-06-28 00:04:25,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1944, PETRI_PLACES=200, PETRI_TRANSITIONS=185} [2024-06-28 00:04:25,484 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2024-06-28 00:04:25,484 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 185 transitions, 1944 flow [2024-06-28 00:04:25,485 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 00:04:25,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:25,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:25,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:04:25,485 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 00:04:25,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash 972716184, now seen corresponding path program 3 times [2024-06-28 00:04:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17459148] [2024-06-28 00:04:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:26,999 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 00:04:26,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17459148] [2024-06-28 00:04:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17459148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:26,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:26,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:26,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799885522] [2024-06-28 00:04:26,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:26,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:27,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:27,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:27,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:27,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:27,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 185 transitions, 1944 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 00:04:27,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:27,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:27,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:27,457 INFO L124 PetriNetUnfolderBase]: 455/809 cut-off events. [2024-06-28 00:04:27,457 INFO L125 PetriNetUnfolderBase]: For 39252/39252 co-relation queries the response was YES. [2024-06-28 00:04:27,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5397 conditions, 809 events. 455/809 cut-off events. For 39252/39252 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3815 event pairs, 99 based on Foata normal form. 2/810 useless extension candidates. Maximal degree in co-relation 5302. Up to 706 conditions per place. [2024-06-28 00:04:27,463 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 153 selfloop transitions, 43 changer transitions 0/198 dead transitions. [2024-06-28 00:04:27,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 198 transitions, 2398 flow [2024-06-28 00:04:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:04:27,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-28 00:04:27,464 INFO L175 Difference]: Start difference. First operand has 200 places, 185 transitions, 1944 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:04:27,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 198 transitions, 2398 flow [2024-06-28 00:04:27,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 198 transitions, 2335 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:27,553 INFO L231 Difference]: Finished difference. Result has 204 places, 187 transitions, 2004 flow [2024-06-28 00:04:27,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2004, PETRI_PLACES=204, PETRI_TRANSITIONS=187} [2024-06-28 00:04:27,553 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 175 predicate places. [2024-06-28 00:04:27,553 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 187 transitions, 2004 flow [2024-06-28 00:04:27,553 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 00:04:27,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:27,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:27,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:04:27,554 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 00:04:27,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:27,554 INFO L85 PathProgramCache]: Analyzing trace with hash 918250775, now seen corresponding path program 5 times [2024-06-28 00:04:27,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:27,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747189869] [2024-06-28 00:04:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:27,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:29,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:29,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747189869] [2024-06-28 00:04:29,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747189869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:29,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:29,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:29,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544612930] [2024-06-28 00:04:29,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:29,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:29,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:29,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:29,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:29,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:29,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 187 transitions, 2004 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 00:04:29,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:29,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:29,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:29,610 INFO L124 PetriNetUnfolderBase]: 459/817 cut-off events. [2024-06-28 00:04:29,610 INFO L125 PetriNetUnfolderBase]: For 40747/40747 co-relation queries the response was YES. [2024-06-28 00:04:29,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5472 conditions, 817 events. 459/817 cut-off events. For 40747/40747 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3867 event pairs, 99 based on Foata normal form. 2/818 useless extension candidates. Maximal degree in co-relation 5376. Up to 738 conditions per place. [2024-06-28 00:04:29,617 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 163 selfloop transitions, 33 changer transitions 0/198 dead transitions. [2024-06-28 00:04:29,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 198 transitions, 2430 flow [2024-06-28 00:04:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 00:04:29,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 00:04:29,618 INFO L175 Difference]: Start difference. First operand has 204 places, 187 transitions, 2004 flow. Second operand 9 states and 105 transitions. [2024-06-28 00:04:29,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 198 transitions, 2430 flow [2024-06-28 00:04:29,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 198 transitions, 2329 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:29,713 INFO L231 Difference]: Finished difference. Result has 205 places, 188 transitions, 1985 flow [2024-06-28 00:04:29,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1985, PETRI_PLACES=205, PETRI_TRANSITIONS=188} [2024-06-28 00:04:29,713 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-28 00:04:29,713 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 188 transitions, 1985 flow [2024-06-28 00:04:29,713 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 00:04:29,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:29,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:29,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:04:29,713 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 00:04:29,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:29,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1777716231, now seen corresponding path program 6 times [2024-06-28 00:04:29,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:29,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601497074] [2024-06-28 00:04:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:29,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:31,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:31,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601497074] [2024-06-28 00:04:31,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601497074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:31,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:31,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:31,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685000834] [2024-06-28 00:04:31,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:31,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:31,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:31,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:31,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:31,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:31,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 188 transitions, 1985 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 00:04:31,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:31,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:31,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:31,514 INFO L124 PetriNetUnfolderBase]: 463/825 cut-off events. [2024-06-28 00:04:31,514 INFO L125 PetriNetUnfolderBase]: For 41955/41955 co-relation queries the response was YES. [2024-06-28 00:04:31,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5495 conditions, 825 events. 463/825 cut-off events. For 41955/41955 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3925 event pairs, 99 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 5398. Up to 726 conditions per place. [2024-06-28 00:04:31,520 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 163 selfloop transitions, 35 changer transitions 0/200 dead transitions. [2024-06-28 00:04:31,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 200 transitions, 2419 flow [2024-06-28 00:04:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:31,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 00:04:31,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-28 00:04:31,521 INFO L175 Difference]: Start difference. First operand has 205 places, 188 transitions, 1985 flow. Second operand 9 states and 106 transitions. [2024-06-28 00:04:31,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 200 transitions, 2419 flow [2024-06-28 00:04:31,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 200 transitions, 2349 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:31,614 INFO L231 Difference]: Finished difference. Result has 207 places, 189 transitions, 2003 flow [2024-06-28 00:04:31,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2003, PETRI_PLACES=207, PETRI_TRANSITIONS=189} [2024-06-28 00:04:31,614 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-28 00:04:31,614 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 189 transitions, 2003 flow [2024-06-28 00:04:31,614 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 00:04:31,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:31,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:31,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:04:31,615 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 00:04:31,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1056775205, now seen corresponding path program 7 times [2024-06-28 00:04:31,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:31,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502610505] [2024-06-28 00:04:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:31,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:33,103 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 00:04:33,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:33,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502610505] [2024-06-28 00:04:33,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502610505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:33,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:33,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:33,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837902994] [2024-06-28 00:04:33,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:33,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:33,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:33,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 189 transitions, 2003 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 00:04:33,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:33,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:33,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:33,460 INFO L124 PetriNetUnfolderBase]: 467/833 cut-off events. [2024-06-28 00:04:33,460 INFO L125 PetriNetUnfolderBase]: For 43517/43517 co-relation queries the response was YES. [2024-06-28 00:04:33,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5568 conditions, 833 events. 467/833 cut-off events. For 43517/43517 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 3987 event pairs, 97 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 5470. Up to 705 conditions per place. [2024-06-28 00:04:33,466 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 158 selfloop transitions, 45 changer transitions 0/205 dead transitions. [2024-06-28 00:04:33,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 205 transitions, 2581 flow [2024-06-28 00:04:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 00:04:33,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-28 00:04:33,468 INFO L175 Difference]: Start difference. First operand has 207 places, 189 transitions, 2003 flow. Second operand 9 states and 112 transitions. [2024-06-28 00:04:33,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 205 transitions, 2581 flow [2024-06-28 00:04:33,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 205 transitions, 2505 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:33,576 INFO L231 Difference]: Finished difference. Result has 209 places, 190 transitions, 2035 flow [2024-06-28 00:04:33,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2035, PETRI_PLACES=209, PETRI_TRANSITIONS=190} [2024-06-28 00:04:33,576 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-28 00:04:33,576 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 190 transitions, 2035 flow [2024-06-28 00:04:33,576 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 00:04:33,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:33,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:33,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:04:33,577 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 00:04:33,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:33,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1056778925, now seen corresponding path program 8 times [2024-06-28 00:04:33,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:33,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405100836] [2024-06-28 00:04:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:33,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:35,226 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 00:04:35,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:35,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405100836] [2024-06-28 00:04:35,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405100836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:35,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:35,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:35,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870868368] [2024-06-28 00:04:35,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:35,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:35,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:35,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:35,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:35,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:35,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 190 transitions, 2035 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 00:04:35,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:35,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:35,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:35,608 INFO L124 PetriNetUnfolderBase]: 471/841 cut-off events. [2024-06-28 00:04:35,608 INFO L125 PetriNetUnfolderBase]: For 44994/44994 co-relation queries the response was YES. [2024-06-28 00:04:35,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5653 conditions, 841 events. 471/841 cut-off events. For 44994/44994 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4046 event pairs, 101 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 5554. Up to 748 conditions per place. [2024-06-28 00:04:35,614 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 158 selfloop transitions, 43 changer transitions 0/203 dead transitions. [2024-06-28 00:04:35,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 203 transitions, 2485 flow [2024-06-28 00:04:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 00:04:35,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:04:35,615 INFO L175 Difference]: Start difference. First operand has 209 places, 190 transitions, 2035 flow. Second operand 9 states and 108 transitions. [2024-06-28 00:04:35,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 203 transitions, 2485 flow [2024-06-28 00:04:35,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 203 transitions, 2375 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:35,729 INFO L231 Difference]: Finished difference. Result has 211 places, 191 transitions, 2033 flow [2024-06-28 00:04:35,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2033, PETRI_PLACES=211, PETRI_TRANSITIONS=191} [2024-06-28 00:04:35,729 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 182 predicate places. [2024-06-28 00:04:35,729 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 191 transitions, 2033 flow [2024-06-28 00:04:35,729 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 00:04:35,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:35,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:35,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:04:35,730 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 00:04:35,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1056779080, now seen corresponding path program 4 times [2024-06-28 00:04:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:35,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498566240] [2024-06-28 00:04:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:35,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:37,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:37,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498566240] [2024-06-28 00:04:37,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498566240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:37,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:37,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:37,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196373009] [2024-06-28 00:04:37,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:37,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:37,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:37,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 191 transitions, 2033 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 00:04:37,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:37,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:37,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:37,630 INFO L124 PetriNetUnfolderBase]: 487/867 cut-off events. [2024-06-28 00:04:37,630 INFO L125 PetriNetUnfolderBase]: For 50235/50235 co-relation queries the response was YES. [2024-06-28 00:04:37,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5938 conditions, 867 events. 487/867 cut-off events. For 50235/50235 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4184 event pairs, 106 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 5838. Up to 737 conditions per place. [2024-06-28 00:04:37,638 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 155 selfloop transitions, 52 changer transitions 0/209 dead transitions. [2024-06-28 00:04:37,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 209 transitions, 2677 flow [2024-06-28 00:04:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 00:04:37,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-28 00:04:37,639 INFO L175 Difference]: Start difference. First operand has 211 places, 191 transitions, 2033 flow. Second operand 10 states and 124 transitions. [2024-06-28 00:04:37,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 209 transitions, 2677 flow [2024-06-28 00:04:37,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 209 transitions, 2583 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:37,761 INFO L231 Difference]: Finished difference. Result has 214 places, 195 transitions, 2116 flow [2024-06-28 00:04:37,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2116, PETRI_PLACES=214, PETRI_TRANSITIONS=195} [2024-06-28 00:04:37,762 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-28 00:04:37,762 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 195 transitions, 2116 flow [2024-06-28 00:04:37,762 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 00:04:37,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:37,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:37,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:04:37,762 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 00:04:37,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:37,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1056923230, now seen corresponding path program 5 times [2024-06-28 00:04:37,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:37,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268464470] [2024-06-28 00:04:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:37,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:39,274 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 00:04:39,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:39,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268464470] [2024-06-28 00:04:39,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268464470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:39,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:39,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:39,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754504990] [2024-06-28 00:04:39,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:39,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:39,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:39,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:39,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:39,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:39,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 195 transitions, 2116 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 00:04:39,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:39,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:39,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:39,710 INFO L124 PetriNetUnfolderBase]: 493/877 cut-off events. [2024-06-28 00:04:39,711 INFO L125 PetriNetUnfolderBase]: For 52040/52040 co-relation queries the response was YES. [2024-06-28 00:04:39,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 877 events. 493/877 cut-off events. For 52040/52040 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4249 event pairs, 106 based on Foata normal form. 2/878 useless extension candidates. Maximal degree in co-relation 5956. Up to 786 conditions per place. [2024-06-28 00:04:39,718 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 162 selfloop transitions, 44 changer transitions 0/208 dead transitions. [2024-06-28 00:04:39,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 208 transitions, 2596 flow [2024-06-28 00:04:39,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 00:04:39,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-28 00:04:39,719 INFO L175 Difference]: Start difference. First operand has 214 places, 195 transitions, 2116 flow. Second operand 9 states and 112 transitions. [2024-06-28 00:04:39,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 208 transitions, 2596 flow [2024-06-28 00:04:39,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 208 transitions, 2557 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:39,835 INFO L231 Difference]: Finished difference. Result has 219 places, 197 transitions, 2210 flow [2024-06-28 00:04:39,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2210, PETRI_PLACES=219, PETRI_TRANSITIONS=197} [2024-06-28 00:04:39,836 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-28 00:04:39,836 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 197 transitions, 2210 flow [2024-06-28 00:04:39,836 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 00:04:39,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:39,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:39,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:04:39,836 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 00:04:39,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1056923075, now seen corresponding path program 9 times [2024-06-28 00:04:39,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:39,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575249631] [2024-06-28 00:04:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:41,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:41,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575249631] [2024-06-28 00:04:41,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575249631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:41,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:41,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:41,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853595311] [2024-06-28 00:04:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:41,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:41,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:41,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:41,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 197 transitions, 2210 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 00:04:41,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:41,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:41,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:41,537 INFO L124 PetriNetUnfolderBase]: 497/885 cut-off events. [2024-06-28 00:04:41,537 INFO L125 PetriNetUnfolderBase]: For 53779/53779 co-relation queries the response was YES. [2024-06-28 00:04:41,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6197 conditions, 885 events. 497/885 cut-off events. For 53779/53779 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4300 event pairs, 104 based on Foata normal form. 2/886 useless extension candidates. Maximal degree in co-relation 6094. Up to 812 conditions per place. [2024-06-28 00:04:41,545 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 174 selfloop transitions, 33 changer transitions 0/209 dead transitions. [2024-06-28 00:04:41,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 209 transitions, 2668 flow [2024-06-28 00:04:41,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 00:04:41,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 00:04:41,546 INFO L175 Difference]: Start difference. First operand has 219 places, 197 transitions, 2210 flow. Second operand 9 states and 105 transitions. [2024-06-28 00:04:41,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 209 transitions, 2668 flow [2024-06-28 00:04:41,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 209 transitions, 2560 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:41,652 INFO L231 Difference]: Finished difference. Result has 221 places, 198 transitions, 2190 flow [2024-06-28 00:04:41,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2190, PETRI_PLACES=221, PETRI_TRANSITIONS=198} [2024-06-28 00:04:41,653 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 192 predicate places. [2024-06-28 00:04:41,653 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 198 transitions, 2190 flow [2024-06-28 00:04:41,653 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 00:04:41,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:41,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:41,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:04:41,653 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 00:04:41,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:41,653 INFO L85 PathProgramCache]: Analyzing trace with hash 571234234, now seen corresponding path program 6 times [2024-06-28 00:04:41,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061822158] [2024-06-28 00:04:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061822158] [2024-06-28 00:04:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061822158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:43,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:43,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:43,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504858043] [2024-06-28 00:04:43,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:43,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:43,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:43,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:43,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:43,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:43,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 198 transitions, 2190 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 00:04:43,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:43,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:43,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:43,532 INFO L124 PetriNetUnfolderBase]: 503/895 cut-off events. [2024-06-28 00:04:43,532 INFO L125 PetriNetUnfolderBase]: For 55306/55306 co-relation queries the response was YES. [2024-06-28 00:04:43,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 895 events. 503/895 cut-off events. For 55306/55306 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4375 event pairs, 105 based on Foata normal form. 2/896 useless extension candidates. Maximal degree in co-relation 6150. Up to 808 conditions per place. [2024-06-28 00:04:43,539 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 171 selfloop transitions, 39 changer transitions 0/212 dead transitions. [2024-06-28 00:04:43,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 212 transitions, 2684 flow [2024-06-28 00:04:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:04:43,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-28 00:04:43,540 INFO L175 Difference]: Start difference. First operand has 221 places, 198 transitions, 2190 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:04:43,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 212 transitions, 2684 flow [2024-06-28 00:04:43,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 212 transitions, 2608 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:43,648 INFO L231 Difference]: Finished difference. Result has 224 places, 200 transitions, 2237 flow [2024-06-28 00:04:43,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2237, PETRI_PLACES=224, PETRI_TRANSITIONS=200} [2024-06-28 00:04:43,649 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-28 00:04:43,649 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 200 transitions, 2237 flow [2024-06-28 00:04:43,649 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 00:04:43,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:43,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:43,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:04:43,649 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 00:04:43,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:43,650 INFO L85 PathProgramCache]: Analyzing trace with hash 576798424, now seen corresponding path program 7 times [2024-06-28 00:04:43,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:43,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185690159] [2024-06-28 00:04:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:43,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:45,419 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 00:04:45,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:45,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185690159] [2024-06-28 00:04:45,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185690159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:45,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:45,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:45,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129997423] [2024-06-28 00:04:45,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:45,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:45,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:45,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:45,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:45,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 200 transitions, 2237 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:45,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:45,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:45,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:46,125 INFO L124 PetriNetUnfolderBase]: 509/905 cut-off events. [2024-06-28 00:04:46,125 INFO L125 PetriNetUnfolderBase]: For 57207/57207 co-relation queries the response was YES. [2024-06-28 00:04:46,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6366 conditions, 905 events. 509/905 cut-off events. For 57207/57207 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4430 event pairs, 99 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 6261. Up to 744 conditions per place. [2024-06-28 00:04:46,133 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 169 selfloop transitions, 48 changer transitions 0/219 dead transitions. [2024-06-28 00:04:46,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 219 transitions, 2769 flow [2024-06-28 00:04:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:04:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:04:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-28 00:04:46,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2024-06-28 00:04:46,134 INFO L175 Difference]: Start difference. First operand has 224 places, 200 transitions, 2237 flow. Second operand 13 states and 145 transitions. [2024-06-28 00:04:46,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 219 transitions, 2769 flow [2024-06-28 00:04:46,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 219 transitions, 2664 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:46,247 INFO L231 Difference]: Finished difference. Result has 229 places, 202 transitions, 2277 flow [2024-06-28 00:04:46,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2277, PETRI_PLACES=229, PETRI_TRANSITIONS=202} [2024-06-28 00:04:46,247 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 200 predicate places. [2024-06-28 00:04:46,248 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 202 transitions, 2277 flow [2024-06-28 00:04:46,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:46,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:46,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:46,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:04:46,248 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 00:04:46,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash 576806360, now seen corresponding path program 1 times [2024-06-28 00:04:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:46,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826205685] [2024-06-28 00:04:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:46,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:47,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:47,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826205685] [2024-06-28 00:04:47,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826205685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:47,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:47,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:47,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334921915] [2024-06-28 00:04:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:47,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:47,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:47,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:47,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 202 transitions, 2277 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 00:04:47,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:47,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:47,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:48,247 INFO L124 PetriNetUnfolderBase]: 517/921 cut-off events. [2024-06-28 00:04:48,247 INFO L125 PetriNetUnfolderBase]: For 63380/63380 co-relation queries the response was YES. [2024-06-28 00:04:48,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 921 events. 517/921 cut-off events. For 63380/63380 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4548 event pairs, 103 based on Foata normal form. 4/924 useless extension candidates. Maximal degree in co-relation 6393. Up to 824 conditions per place. [2024-06-28 00:04:48,255 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 177 selfloop transitions, 36 changer transitions 0/215 dead transitions. [2024-06-28 00:04:48,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 215 transitions, 2765 flow [2024-06-28 00:04:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 00:04:48,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 00:04:48,256 INFO L175 Difference]: Start difference. First operand has 229 places, 202 transitions, 2277 flow. Second operand 10 states and 115 transitions. [2024-06-28 00:04:48,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 215 transitions, 2765 flow [2024-06-28 00:04:48,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 215 transitions, 2642 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-28 00:04:48,373 INFO L231 Difference]: Finished difference. Result has 228 places, 204 transitions, 2267 flow [2024-06-28 00:04:48,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2267, PETRI_PLACES=228, PETRI_TRANSITIONS=204} [2024-06-28 00:04:48,373 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2024-06-28 00:04:48,374 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 204 transitions, 2267 flow [2024-06-28 00:04:48,374 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 00:04:48,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:48,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:48,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:04:48,374 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 00:04:48,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:48,375 INFO L85 PathProgramCache]: Analyzing trace with hash 576596614, now seen corresponding path program 8 times [2024-06-28 00:04:48,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:48,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816898665] [2024-06-28 00:04:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:48,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:49,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:49,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816898665] [2024-06-28 00:04:49,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816898665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:49,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:49,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085175540] [2024-06-28 00:04:49,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:49,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:49,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:50,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:50,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 204 transitions, 2267 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:50,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:50,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:50,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:50,402 INFO L124 PetriNetUnfolderBase]: 523/931 cut-off events. [2024-06-28 00:04:50,402 INFO L125 PetriNetUnfolderBase]: For 60772/60772 co-relation queries the response was YES. [2024-06-28 00:04:50,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6554 conditions, 931 events. 523/931 cut-off events. For 60772/60772 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4605 event pairs, 109 based on Foata normal form. 2/932 useless extension candidates. Maximal degree in co-relation 6447. Up to 844 conditions per place. [2024-06-28 00:04:50,410 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 181 selfloop transitions, 35 changer transitions 0/218 dead transitions. [2024-06-28 00:04:50,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 218 transitions, 2779 flow [2024-06-28 00:04:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 00:04:50,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-28 00:04:50,411 INFO L175 Difference]: Start difference. First operand has 228 places, 204 transitions, 2267 flow. Second operand 11 states and 123 transitions. [2024-06-28 00:04:50,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 218 transitions, 2779 flow [2024-06-28 00:04:50,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 218 transitions, 2682 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:50,555 INFO L231 Difference]: Finished difference. Result has 231 places, 206 transitions, 2293 flow [2024-06-28 00:04:50,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2293, PETRI_PLACES=231, PETRI_TRANSITIONS=206} [2024-06-28 00:04:50,556 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 202 predicate places. [2024-06-28 00:04:50,556 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 206 transitions, 2293 flow [2024-06-28 00:04:50,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:50,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:50,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:50,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:04:50,556 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 00:04:50,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash 576591034, now seen corresponding path program 9 times [2024-06-28 00:04:50,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:50,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344676764] [2024-06-28 00:04:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:50,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:52,177 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 00:04:52,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344676764] [2024-06-28 00:04:52,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344676764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:52,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:52,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:52,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022371048] [2024-06-28 00:04:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:52,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:52,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:52,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:52,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:52,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:52,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 206 transitions, 2293 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:52,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:52,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:52,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:52,879 INFO L124 PetriNetUnfolderBase]: 529/941 cut-off events. [2024-06-28 00:04:52,879 INFO L125 PetriNetUnfolderBase]: For 62580/62580 co-relation queries the response was YES. [2024-06-28 00:04:52,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6614 conditions, 941 events. 529/941 cut-off events. For 62580/62580 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4659 event pairs, 98 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 6506. Up to 763 conditions per place. [2024-06-28 00:04:52,887 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 169 selfloop transitions, 52 changer transitions 0/223 dead transitions. [2024-06-28 00:04:52,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 223 transitions, 2829 flow [2024-06-28 00:04:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:52,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:04:52,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-28 00:04:52,888 INFO L175 Difference]: Start difference. First operand has 231 places, 206 transitions, 2293 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:04:52,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 223 transitions, 2829 flow [2024-06-28 00:04:53,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 223 transitions, 2747 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:53,012 INFO L231 Difference]: Finished difference. Result has 234 places, 208 transitions, 2364 flow [2024-06-28 00:04:53,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2364, PETRI_PLACES=234, PETRI_TRANSITIONS=208} [2024-06-28 00:04:53,012 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 205 predicate places. [2024-06-28 00:04:53,012 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 208 transitions, 2364 flow [2024-06-28 00:04:53,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:53,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:53,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:53,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:04:53,013 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 00:04:53,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 576590879, now seen corresponding path program 10 times [2024-06-28 00:04:53,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:53,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223053045] [2024-06-28 00:04:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:53,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:54,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:54,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223053045] [2024-06-28 00:04:54,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223053045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:54,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:54,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:54,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193049540] [2024-06-28 00:04:54,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:54,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:54,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:54,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:54,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 208 transitions, 2364 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:54,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:54,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:54,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:54,911 INFO L124 PetriNetUnfolderBase]: 533/949 cut-off events. [2024-06-28 00:04:54,911 INFO L125 PetriNetUnfolderBase]: For 64568/64568 co-relation queries the response was YES. [2024-06-28 00:04:54,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6721 conditions, 949 events. 533/949 cut-off events. For 64568/64568 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4723 event pairs, 110 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 6612. Up to 876 conditions per place. [2024-06-28 00:04:54,920 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 188 selfloop transitions, 30 changer transitions 0/220 dead transitions. [2024-06-28 00:04:54,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 220 transitions, 2844 flow [2024-06-28 00:04:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:54,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:54,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:04:54,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-28 00:04:54,921 INFO L175 Difference]: Start difference. First operand has 234 places, 208 transitions, 2364 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:04:54,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 220 transitions, 2844 flow [2024-06-28 00:04:55,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 220 transitions, 2717 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:55,061 INFO L231 Difference]: Finished difference. Result has 235 places, 209 transitions, 2321 flow [2024-06-28 00:04:55,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2321, PETRI_PLACES=235, PETRI_TRANSITIONS=209} [2024-06-28 00:04:55,062 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 206 predicate places. [2024-06-28 00:04:55,062 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 209 transitions, 2321 flow [2024-06-28 00:04:55,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:55,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:55,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:55,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:04:55,062 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 00:04:55,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:55,062 INFO L85 PathProgramCache]: Analyzing trace with hash 290408250, now seen corresponding path program 2 times [2024-06-28 00:04:55,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:55,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869769972] [2024-06-28 00:04:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:55,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:56,739 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 00:04:56,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:56,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869769972] [2024-06-28 00:04:56,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869769972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:56,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:56,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:56,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845447715] [2024-06-28 00:04:56,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:56,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:56,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:56,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:56,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:56,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:56,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 209 transitions, 2321 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:56,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:56,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:56,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:57,126 INFO L124 PetriNetUnfolderBase]: 537/957 cut-off events. [2024-06-28 00:04:57,126 INFO L125 PetriNetUnfolderBase]: For 66298/66298 co-relation queries the response was YES. [2024-06-28 00:04:57,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6714 conditions, 957 events. 537/957 cut-off events. For 66298/66298 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4760 event pairs, 104 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 6604. Up to 905 conditions per place. [2024-06-28 00:04:57,155 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 196 selfloop transitions, 23 changer transitions 0/221 dead transitions. [2024-06-28 00:04:57,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 221 transitions, 2815 flow [2024-06-28 00:04:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 00:04:57,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-28 00:04:57,157 INFO L175 Difference]: Start difference. First operand has 235 places, 209 transitions, 2321 flow. Second operand 10 states and 108 transitions. [2024-06-28 00:04:57,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 221 transitions, 2815 flow [2024-06-28 00:04:57,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 221 transitions, 2743 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:57,310 INFO L231 Difference]: Finished difference. Result has 237 places, 210 transitions, 2325 flow [2024-06-28 00:04:57,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2325, PETRI_PLACES=237, PETRI_TRANSITIONS=210} [2024-06-28 00:04:57,310 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2024-06-28 00:04:57,310 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 210 transitions, 2325 flow [2024-06-28 00:04:57,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:57,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:57,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:57,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:04:57,311 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 00:04:57,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1012896040, now seen corresponding path program 10 times [2024-06-28 00:04:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:57,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301608217] [2024-06-28 00:04:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:58,890 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 00:04:58,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:58,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301608217] [2024-06-28 00:04:58,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301608217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:58,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:58,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:58,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821857235] [2024-06-28 00:04:58,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:58,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:58,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:58,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:58,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:04:58,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 210 transitions, 2325 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:58,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:58,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:04:58,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:59,616 INFO L124 PetriNetUnfolderBase]: 543/967 cut-off events. [2024-06-28 00:04:59,616 INFO L125 PetriNetUnfolderBase]: For 68288/68288 co-relation queries the response was YES. [2024-06-28 00:04:59,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6798 conditions, 967 events. 543/967 cut-off events. For 68288/68288 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4821 event pairs, 102 based on Foata normal form. 2/968 useless extension candidates. Maximal degree in co-relation 6687. Up to 896 conditions per place. [2024-06-28 00:04:59,625 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 196 selfloop transitions, 30 changer transitions 0/228 dead transitions. [2024-06-28 00:04:59,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 228 transitions, 2879 flow [2024-06-28 00:04:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:04:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:04:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 138 transitions. [2024-06-28 00:04:59,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35384615384615387 [2024-06-28 00:04:59,626 INFO L175 Difference]: Start difference. First operand has 237 places, 210 transitions, 2325 flow. Second operand 13 states and 138 transitions. [2024-06-28 00:04:59,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 228 transitions, 2879 flow [2024-06-28 00:04:59,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 228 transitions, 2813 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:59,763 INFO L231 Difference]: Finished difference. Result has 242 places, 212 transitions, 2376 flow [2024-06-28 00:04:59,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2376, PETRI_PLACES=242, PETRI_TRANSITIONS=212} [2024-06-28 00:04:59,764 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 213 predicate places. [2024-06-28 00:04:59,764 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 212 transitions, 2376 flow [2024-06-28 00:04:59,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:59,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:59,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:59,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:04:59,764 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 00:04:59,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:59,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1013103430, now seen corresponding path program 11 times [2024-06-28 00:04:59,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:59,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559108753] [2024-06-28 00:04:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:59,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:01,294 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 00:05:01,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559108753] [2024-06-28 00:05:01,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559108753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:01,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:01,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:01,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473522903] [2024-06-28 00:05:01,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:01,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:01,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:01,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:01,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:01,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:01,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 212 transitions, 2376 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:01,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:01,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:01,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:01,962 INFO L124 PetriNetUnfolderBase]: 559/993 cut-off events. [2024-06-28 00:05:01,962 INFO L125 PetriNetUnfolderBase]: For 75557/75557 co-relation queries the response was YES. [2024-06-28 00:05:01,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 993 events. 559/993 cut-off events. For 75557/75557 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4978 event pairs, 101 based on Foata normal form. 2/994 useless extension candidates. Maximal degree in co-relation 7081. Up to 896 conditions per place. [2024-06-28 00:05:01,971 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 192 selfloop transitions, 37 changer transitions 0/231 dead transitions. [2024-06-28 00:05:01,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 231 transitions, 3126 flow [2024-06-28 00:05:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:05:01,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 00:05:01,972 INFO L175 Difference]: Start difference. First operand has 242 places, 212 transitions, 2376 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:05:01,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 231 transitions, 3126 flow [2024-06-28 00:05:02,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 231 transitions, 3031 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-28 00:05:02,131 INFO L231 Difference]: Finished difference. Result has 243 places, 216 transitions, 2473 flow [2024-06-28 00:05:02,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2473, PETRI_PLACES=243, PETRI_TRANSITIONS=216} [2024-06-28 00:05:02,131 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 214 predicate places. [2024-06-28 00:05:02,132 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 216 transitions, 2473 flow [2024-06-28 00:05:02,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:02,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:02,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:02,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:05:02,132 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 00:05:02,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1013097850, now seen corresponding path program 12 times [2024-06-28 00:05:02,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:02,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098736159] [2024-06-28 00:05:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:02,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:03,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:03,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098736159] [2024-06-28 00:05:03,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098736159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:03,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:03,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426017355] [2024-06-28 00:05:03,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:03,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:03,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:03,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:03,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:03,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:03,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 216 transitions, 2473 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:03,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:03,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:03,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:04,317 INFO L124 PetriNetUnfolderBase]: 555/987 cut-off events. [2024-06-28 00:05:04,317 INFO L125 PetriNetUnfolderBase]: For 72214/72214 co-relation queries the response was YES. [2024-06-28 00:05:04,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7030 conditions, 987 events. 555/987 cut-off events. For 72214/72214 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4950 event pairs, 101 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 6916. Up to 916 conditions per place. [2024-06-28 00:05:04,324 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 199 selfloop transitions, 29 changer transitions 0/230 dead transitions. [2024-06-28 00:05:04,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 230 transitions, 2979 flow [2024-06-28 00:05:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:05:04,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-28 00:05:04,325 INFO L175 Difference]: Start difference. First operand has 243 places, 216 transitions, 2473 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:05:04,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 230 transitions, 2979 flow [2024-06-28 00:05:04,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 230 transitions, 2855 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:04,485 INFO L231 Difference]: Finished difference. Result has 246 places, 216 transitions, 2412 flow [2024-06-28 00:05:04,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2412, PETRI_PLACES=246, PETRI_TRANSITIONS=216} [2024-06-28 00:05:04,485 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-06-28 00:05:04,485 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 216 transitions, 2412 flow [2024-06-28 00:05:04,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:04,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:04,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:04,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:05:04,486 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 00:05:04,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1013103585, now seen corresponding path program 11 times [2024-06-28 00:05:04,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:04,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999434609] [2024-06-28 00:05:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:04,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:05,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:05,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999434609] [2024-06-28 00:05:05,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999434609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:05,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:05,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:05,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200742473] [2024-06-28 00:05:05,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:05,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:05,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:05,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:05,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:05,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:05,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 216 transitions, 2412 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:05,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:05,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:05,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:06,419 INFO L124 PetriNetUnfolderBase]: 559/995 cut-off events. [2024-06-28 00:05:06,420 INFO L125 PetriNetUnfolderBase]: For 73780/73780 co-relation queries the response was YES. [2024-06-28 00:05:06,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7015 conditions, 995 events. 559/995 cut-off events. For 73780/73780 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 4988 event pairs, 109 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6900. Up to 958 conditions per place. [2024-06-28 00:05:06,429 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 205 selfloop transitions, 20 changer transitions 0/227 dead transitions. [2024-06-28 00:05:06,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 227 transitions, 2904 flow [2024-06-28 00:05:06,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 00:05:06,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-28 00:05:06,430 INFO L175 Difference]: Start difference. First operand has 246 places, 216 transitions, 2412 flow. Second operand 10 states and 107 transitions. [2024-06-28 00:05:06,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 227 transitions, 2904 flow [2024-06-28 00:05:06,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 227 transitions, 2830 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:06,589 INFO L231 Difference]: Finished difference. Result has 246 places, 217 transitions, 2404 flow [2024-06-28 00:05:06,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2404, PETRI_PLACES=246, PETRI_TRANSITIONS=217} [2024-06-28 00:05:06,589 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-06-28 00:05:06,589 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 217 transitions, 2404 flow [2024-06-28 00:05:06,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:06,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:06,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:06,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:05:06,590 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 00:05:06,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1231618128, now seen corresponding path program 13 times [2024-06-28 00:05:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:06,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001514542] [2024-06-28 00:05:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:06,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:08,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:08,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001514542] [2024-06-28 00:05:08,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001514542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:08,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:08,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:08,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024999940] [2024-06-28 00:05:08,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:08,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:08,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:08,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:08,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:08,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:08,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 217 transitions, 2404 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:08,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:08,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:08,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:08,709 INFO L124 PetriNetUnfolderBase]: 565/1005 cut-off events. [2024-06-28 00:05:08,709 INFO L125 PetriNetUnfolderBase]: For 75979/75979 co-relation queries the response was YES. [2024-06-28 00:05:08,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7094 conditions, 1005 events. 565/1005 cut-off events. For 75979/75979 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5074 event pairs, 109 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 6978. Up to 963 conditions per place. [2024-06-28 00:05:08,719 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 204 selfloop transitions, 23 changer transitions 0/229 dead transitions. [2024-06-28 00:05:08,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 229 transitions, 2932 flow [2024-06-28 00:05:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:05:08,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-28 00:05:08,720 INFO L175 Difference]: Start difference. First operand has 246 places, 217 transitions, 2404 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:05:08,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 229 transitions, 2932 flow [2024-06-28 00:05:08,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 229 transitions, 2878 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:08,888 INFO L231 Difference]: Finished difference. Result has 248 places, 219 transitions, 2454 flow [2024-06-28 00:05:08,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2454, PETRI_PLACES=248, PETRI_TRANSITIONS=219} [2024-06-28 00:05:08,888 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 219 predicate places. [2024-06-28 00:05:08,888 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 219 transitions, 2454 flow [2024-06-28 00:05:08,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:08,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:08,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:08,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:05:08,889 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 00:05:08,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1231626064, now seen corresponding path program 3 times [2024-06-28 00:05:08,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:08,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811489488] [2024-06-28 00:05:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:08,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:10,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:10,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811489488] [2024-06-28 00:05:10,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811489488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:10,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:10,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:10,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525402563] [2024-06-28 00:05:10,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:10,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:10,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:10,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:10,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:10,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 219 transitions, 2454 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:10,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:10,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:10,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:10,915 INFO L124 PetriNetUnfolderBase]: 569/1013 cut-off events. [2024-06-28 00:05:10,915 INFO L125 PetriNetUnfolderBase]: For 78098/78098 co-relation queries the response was YES. [2024-06-28 00:05:10,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7174 conditions, 1013 events. 569/1013 cut-off events. For 78098/78098 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5136 event pairs, 112 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 7057. Up to 974 conditions per place. [2024-06-28 00:05:10,927 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 208 selfloop transitions, 20 changer transitions 0/230 dead transitions. [2024-06-28 00:05:10,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 230 transitions, 2958 flow [2024-06-28 00:05:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 00:05:10,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-28 00:05:10,929 INFO L175 Difference]: Start difference. First operand has 248 places, 219 transitions, 2454 flow. Second operand 11 states and 112 transitions. [2024-06-28 00:05:10,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 230 transitions, 2958 flow [2024-06-28 00:05:11,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 230 transitions, 2826 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:11,126 INFO L231 Difference]: Finished difference. Result has 250 places, 220 transitions, 2395 flow [2024-06-28 00:05:11,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2395, PETRI_PLACES=250, PETRI_TRANSITIONS=220} [2024-06-28 00:05:11,126 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 221 predicate places. [2024-06-28 00:05:11,126 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 220 transitions, 2395 flow [2024-06-28 00:05:11,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:11,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:11,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:11,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:05:11,126 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 00:05:11,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:11,127 INFO L85 PathProgramCache]: Analyzing trace with hash -818948694, now seen corresponding path program 4 times [2024-06-28 00:05:11,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:11,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472265001] [2024-06-28 00:05:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:11,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:12,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472265001] [2024-06-28 00:05:12,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472265001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:12,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:12,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344911051] [2024-06-28 00:05:12,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:12,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:12,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:12,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:12,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 220 transitions, 2395 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 00:05:12,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:12,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:12,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:13,066 INFO L124 PetriNetUnfolderBase]: 573/1021 cut-off events. [2024-06-28 00:05:13,067 INFO L125 PetriNetUnfolderBase]: For 80066/80066 co-relation queries the response was YES. [2024-06-28 00:05:13,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7188 conditions, 1021 events. 573/1021 cut-off events. For 80066/80066 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5208 event pairs, 109 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 7070. Up to 981 conditions per place. [2024-06-28 00:05:13,079 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 210 selfloop transitions, 19 changer transitions 0/231 dead transitions. [2024-06-28 00:05:13,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 231 transitions, 2907 flow [2024-06-28 00:05:13,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:13,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 00:05:13,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-28 00:05:13,080 INFO L175 Difference]: Start difference. First operand has 250 places, 220 transitions, 2395 flow. Second operand 10 states and 106 transitions. [2024-06-28 00:05:13,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 231 transitions, 2907 flow [2024-06-28 00:05:13,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 231 transitions, 2842 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:13,262 INFO L231 Difference]: Finished difference. Result has 251 places, 221 transitions, 2402 flow [2024-06-28 00:05:13,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2402, PETRI_PLACES=251, PETRI_TRANSITIONS=221} [2024-06-28 00:05:13,263 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2024-06-28 00:05:13,263 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 221 transitions, 2402 flow [2024-06-28 00:05:13,263 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 00:05:13,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:13,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:13,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:05:13,263 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 00:05:13,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:13,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1490499934, now seen corresponding path program 5 times [2024-06-28 00:05:13,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:13,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48486753] [2024-06-28 00:05:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:13,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:14,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:14,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48486753] [2024-06-28 00:05:14,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48486753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:14,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:14,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:14,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604772701] [2024-06-28 00:05:14,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:14,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:14,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:14,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:14,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 221 transitions, 2402 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:14,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:14,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:14,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:15,062 INFO L124 PetriNetUnfolderBase]: 577/1029 cut-off events. [2024-06-28 00:05:15,062 INFO L125 PetriNetUnfolderBase]: For 82226/82226 co-relation queries the response was YES. [2024-06-28 00:05:15,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7249 conditions, 1029 events. 577/1029 cut-off events. For 82226/82226 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5252 event pairs, 111 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 7130. Up to 993 conditions per place. [2024-06-28 00:05:15,072 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 215 selfloop transitions, 15 changer transitions 0/232 dead transitions. [2024-06-28 00:05:15,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 232 transitions, 2914 flow [2024-06-28 00:05:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 00:05:15,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-28 00:05:15,073 INFO L175 Difference]: Start difference. First operand has 251 places, 221 transitions, 2402 flow. Second operand 10 states and 102 transitions. [2024-06-28 00:05:15,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 232 transitions, 2914 flow [2024-06-28 00:05:15,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 232 transitions, 2852 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:15,269 INFO L231 Difference]: Finished difference. Result has 253 places, 222 transitions, 2406 flow [2024-06-28 00:05:15,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2406, PETRI_PLACES=253, PETRI_TRANSITIONS=222} [2024-06-28 00:05:15,270 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 224 predicate places. [2024-06-28 00:05:15,270 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 222 transitions, 2406 flow [2024-06-28 00:05:15,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:15,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:15,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:15,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:05:15,270 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 00:05:15,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:15,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1224468288, now seen corresponding path program 14 times [2024-06-28 00:05:15,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:15,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047854952] [2024-06-28 00:05:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:15,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:16,792 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 00:05:16,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:16,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047854952] [2024-06-28 00:05:16,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047854952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:16,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:16,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:16,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880094126] [2024-06-28 00:05:16,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:16,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:16,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:16,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:16,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:16,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:16,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 222 transitions, 2406 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:16,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:16,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:16,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:17,379 INFO L124 PetriNetUnfolderBase]: 583/1039 cut-off events. [2024-06-28 00:05:17,380 INFO L125 PetriNetUnfolderBase]: For 84445/84445 co-relation queries the response was YES. [2024-06-28 00:05:17,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7330 conditions, 1039 events. 583/1039 cut-off events. For 84445/84445 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5319 event pairs, 112 based on Foata normal form. 2/1040 useless extension candidates. Maximal degree in co-relation 7210. Up to 972 conditions per place. [2024-06-28 00:05:17,390 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 208 selfloop transitions, 26 changer transitions 0/236 dead transitions. [2024-06-28 00:05:17,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 236 transitions, 2968 flow [2024-06-28 00:05:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:17,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:05:17,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-28 00:05:17,392 INFO L175 Difference]: Start difference. First operand has 253 places, 222 transitions, 2406 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:05:17,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 236 transitions, 2968 flow [2024-06-28 00:05:17,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 236 transitions, 2912 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:17,595 INFO L231 Difference]: Finished difference. Result has 256 places, 224 transitions, 2467 flow [2024-06-28 00:05:17,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2467, PETRI_PLACES=256, PETRI_TRANSITIONS=224} [2024-06-28 00:05:17,595 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-28 00:05:17,595 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 224 transitions, 2467 flow [2024-06-28 00:05:17,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:17,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:17,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:17,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:05:17,596 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 00:05:17,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1351762466, now seen corresponding path program 15 times [2024-06-28 00:05:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076504029] [2024-06-28 00:05:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:19,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:19,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076504029] [2024-06-28 00:05:19,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076504029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:19,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:19,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:19,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204356272] [2024-06-28 00:05:19,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:19,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:19,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:19,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:19,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:19,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:19,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 224 transitions, 2467 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:19,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:19,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:19,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:19,926 INFO L124 PetriNetUnfolderBase]: 584/1041 cut-off events. [2024-06-28 00:05:19,927 INFO L125 PetriNetUnfolderBase]: For 83379/83379 co-relation queries the response was YES. [2024-06-28 00:05:19,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7310 conditions, 1041 events. 584/1041 cut-off events. For 83379/83379 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5338 event pairs, 111 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 7189. Up to 974 conditions per place. [2024-06-28 00:05:19,937 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 209 selfloop transitions, 28 changer transitions 0/239 dead transitions. [2024-06-28 00:05:19,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 239 transitions, 3045 flow [2024-06-28 00:05:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:05:19,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-28 00:05:19,938 INFO L175 Difference]: Start difference. First operand has 256 places, 224 transitions, 2467 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:05:19,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 239 transitions, 3045 flow [2024-06-28 00:05:20,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 239 transitions, 2950 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:20,114 INFO L231 Difference]: Finished difference. Result has 258 places, 226 transitions, 2497 flow [2024-06-28 00:05:20,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2497, PETRI_PLACES=258, PETRI_TRANSITIONS=226} [2024-06-28 00:05:20,114 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 229 predicate places. [2024-06-28 00:05:20,114 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 226 transitions, 2497 flow [2024-06-28 00:05:20,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:20,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:20,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:20,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:05:20,115 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 00:05:20,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1756864769, now seen corresponding path program 12 times [2024-06-28 00:05:20,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:20,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138849983] [2024-06-28 00:05:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:20,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:21,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138849983] [2024-06-28 00:05:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138849983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:21,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738887293] [2024-06-28 00:05:21,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:21,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:21,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:21,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 226 transitions, 2497 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:21,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:21,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:21,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:21,940 INFO L124 PetriNetUnfolderBase]: 581/1036 cut-off events. [2024-06-28 00:05:21,940 INFO L125 PetriNetUnfolderBase]: For 78483/78483 co-relation queries the response was YES. [2024-06-28 00:05:21,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7094 conditions, 1036 events. 581/1036 cut-off events. For 78483/78483 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5299 event pairs, 116 based on Foata normal form. 2/1037 useless extension candidates. Maximal degree in co-relation 6972. Up to 1005 conditions per place. [2024-06-28 00:05:21,949 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 217 selfloop transitions, 17 changer transitions 0/236 dead transitions. [2024-06-28 00:05:21,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 236 transitions, 2987 flow [2024-06-28 00:05:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:21,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 00:05:21,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 00:05:21,950 INFO L175 Difference]: Start difference. First operand has 258 places, 226 transitions, 2497 flow. Second operand 10 states and 105 transitions. [2024-06-28 00:05:21,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 236 transitions, 2987 flow [2024-06-28 00:05:22,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 236 transitions, 2874 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:22,113 INFO L231 Difference]: Finished difference. Result has 259 places, 226 transitions, 2422 flow [2024-06-28 00:05:22,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2422, PETRI_PLACES=259, PETRI_TRANSITIONS=226} [2024-06-28 00:05:22,114 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-28 00:05:22,114 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 226 transitions, 2422 flow [2024-06-28 00:05:22,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:22,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:22,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:22,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:05:22,114 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 00:05:22,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1756864924, now seen corresponding path program 16 times [2024-06-28 00:05:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:22,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984144813] [2024-06-28 00:05:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:23,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984144813] [2024-06-28 00:05:23,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984144813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:23,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:23,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:23,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295637479] [2024-06-28 00:05:23,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:23,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:23,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:23,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:23,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:23,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:23,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 226 transitions, 2422 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:23,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:23,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:23,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:24,016 INFO L124 PetriNetUnfolderBase]: 577/1030 cut-off events. [2024-06-28 00:05:24,016 INFO L125 PetriNetUnfolderBase]: For 72942/72942 co-relation queries the response was YES. [2024-06-28 00:05:24,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 1030 events. 577/1030 cut-off events. For 72942/72942 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5272 event pairs, 109 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 6664. Up to 925 conditions per place. [2024-06-28 00:05:24,026 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 196 selfloop transitions, 42 changer transitions 0/240 dead transitions. [2024-06-28 00:05:24,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 240 transitions, 3108 flow [2024-06-28 00:05:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:05:24,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 00:05:24,028 INFO L175 Difference]: Start difference. First operand has 259 places, 226 transitions, 2422 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:05:24,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 240 transitions, 3108 flow [2024-06-28 00:05:24,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 240 transitions, 3050 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:24,186 INFO L231 Difference]: Finished difference. Result has 262 places, 226 transitions, 2453 flow [2024-06-28 00:05:24,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2453, PETRI_PLACES=262, PETRI_TRANSITIONS=226} [2024-06-28 00:05:24,186 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 233 predicate places. [2024-06-28 00:05:24,186 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 226 transitions, 2453 flow [2024-06-28 00:05:24,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:24,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:24,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:24,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:05:24,187 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 00:05:24,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:24,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1958250309, now seen corresponding path program 13 times [2024-06-28 00:05:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:24,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064082404] [2024-06-28 00:05:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:24,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:25,840 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 00:05:25,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:25,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064082404] [2024-06-28 00:05:25,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064082404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:25,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:25,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:25,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571133907] [2024-06-28 00:05:25,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:25,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:25,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:25,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:25,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:25,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 226 transitions, 2453 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:25,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:25,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:25,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:26,240 INFO L124 PetriNetUnfolderBase]: 581/1038 cut-off events. [2024-06-28 00:05:26,240 INFO L125 PetriNetUnfolderBase]: For 74603/74603 co-relation queries the response was YES. [2024-06-28 00:05:26,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6867 conditions, 1038 events. 581/1038 cut-off events. For 74603/74603 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5340 event pairs, 56 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 6743. Up to 658 conditions per place. [2024-06-28 00:05:26,249 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 160 selfloop transitions, 82 changer transitions 0/244 dead transitions. [2024-06-28 00:05:26,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 244 transitions, 3155 flow [2024-06-28 00:05:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:26,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-28 00:05:26,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 00:05:26,250 INFO L175 Difference]: Start difference. First operand has 262 places, 226 transitions, 2453 flow. Second operand 8 states and 110 transitions. [2024-06-28 00:05:26,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 244 transitions, 3155 flow [2024-06-28 00:05:26,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 244 transitions, 3033 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:26,440 INFO L231 Difference]: Finished difference. Result has 260 places, 227 transitions, 2509 flow [2024-06-28 00:05:26,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2509, PETRI_PLACES=260, PETRI_TRANSITIONS=227} [2024-06-28 00:05:26,440 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-28 00:05:26,440 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 227 transitions, 2509 flow [2024-06-28 00:05:26,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:26,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:26,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:26,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:05:26,441 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 00:05:26,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:26,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1956372484, now seen corresponding path program 17 times [2024-06-28 00:05:26,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:26,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221087828] [2024-06-28 00:05:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:26,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:27,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:27,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221087828] [2024-06-28 00:05:27,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221087828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:27,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:27,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:27,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107263623] [2024-06-28 00:05:27,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:27,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:27,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:27,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:28,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:28,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 227 transitions, 2509 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:28,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:28,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:28,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:28,441 INFO L124 PetriNetUnfolderBase]: 587/1048 cut-off events. [2024-06-28 00:05:28,441 INFO L125 PetriNetUnfolderBase]: For 76219/76219 co-relation queries the response was YES. [2024-06-28 00:05:28,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 1048 events. 587/1048 cut-off events. For 76219/76219 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5391 event pairs, 70 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 6895. Up to 570 conditions per place. [2024-06-28 00:05:28,450 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 122 selfloop transitions, 124 changer transitions 0/248 dead transitions. [2024-06-28 00:05:28,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 248 transitions, 3277 flow [2024-06-28 00:05:28,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:28,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:05:28,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 00:05:28,451 INFO L175 Difference]: Start difference. First operand has 260 places, 227 transitions, 2509 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:05:28,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 248 transitions, 3277 flow [2024-06-28 00:05:28,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 248 transitions, 3137 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:28,645 INFO L231 Difference]: Finished difference. Result has 263 places, 231 transitions, 2683 flow [2024-06-28 00:05:28,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2683, PETRI_PLACES=263, PETRI_TRANSITIONS=231} [2024-06-28 00:05:28,646 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 234 predicate places. [2024-06-28 00:05:28,646 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 231 transitions, 2683 flow [2024-06-28 00:05:28,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:28,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:28,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:28,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:05:28,646 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 00:05:28,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1956372639, now seen corresponding path program 14 times [2024-06-28 00:05:28,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617180741] [2024-06-28 00:05:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:28,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:30,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617180741] [2024-06-28 00:05:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617180741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:30,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:30,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:30,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068924464] [2024-06-28 00:05:30,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:30,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:30,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:30,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:30,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:30,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 231 transitions, 2683 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:30,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:30,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:30,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:30,501 INFO L124 PetriNetUnfolderBase]: 591/1056 cut-off events. [2024-06-28 00:05:30,501 INFO L125 PetriNetUnfolderBase]: For 76549/76549 co-relation queries the response was YES. [2024-06-28 00:05:30,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7208 conditions, 1056 events. 591/1056 cut-off events. For 76549/76549 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5432 event pairs, 78 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 7084. Up to 863 conditions per place. [2024-06-28 00:05:30,511 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 173 selfloop transitions, 71 changer transitions 0/246 dead transitions. [2024-06-28 00:05:30,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 246 transitions, 3214 flow [2024-06-28 00:05:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 00:05:30,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:05:30,512 INFO L175 Difference]: Start difference. First operand has 263 places, 231 transitions, 2683 flow. Second operand 9 states and 117 transitions. [2024-06-28 00:05:30,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 246 transitions, 3214 flow [2024-06-28 00:05:30,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 246 transitions, 3078 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:30,696 INFO L231 Difference]: Finished difference. Result has 265 places, 232 transitions, 2702 flow [2024-06-28 00:05:30,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2702, PETRI_PLACES=265, PETRI_TRANSITIONS=232} [2024-06-28 00:05:30,697 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2024-06-28 00:05:30,697 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 232 transitions, 2702 flow [2024-06-28 00:05:30,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:30,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:30,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:30,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:05:30,697 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 00:05:30,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1956376359, now seen corresponding path program 15 times [2024-06-28 00:05:30,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:30,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297808328] [2024-06-28 00:05:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:30,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:32,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:32,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297808328] [2024-06-28 00:05:32,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297808328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:32,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:32,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:32,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263322477] [2024-06-28 00:05:32,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:32,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:32,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:32,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:32,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:32,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 232 transitions, 2702 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:32,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:32,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:32,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:32,729 INFO L124 PetriNetUnfolderBase]: 595/1064 cut-off events. [2024-06-28 00:05:32,729 INFO L125 PetriNetUnfolderBase]: For 76325/76325 co-relation queries the response was YES. [2024-06-28 00:05:32,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7266 conditions, 1064 events. 595/1064 cut-off events. For 76325/76325 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5525 event pairs, 74 based on Foata normal form. 2/1065 useless extension candidates. Maximal degree in co-relation 7142. Up to 843 conditions per place. [2024-06-28 00:05:32,738 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 174 selfloop transitions, 72 changer transitions 0/248 dead transitions. [2024-06-28 00:05:32,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 248 transitions, 3241 flow [2024-06-28 00:05:32,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 00:05:32,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 00:05:32,738 INFO L175 Difference]: Start difference. First operand has 265 places, 232 transitions, 2702 flow. Second operand 8 states and 112 transitions. [2024-06-28 00:05:32,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 248 transitions, 3241 flow [2024-06-28 00:05:32,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 248 transitions, 3099 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:32,913 INFO L231 Difference]: Finished difference. Result has 265 places, 233 transitions, 2719 flow [2024-06-28 00:05:32,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2719, PETRI_PLACES=265, PETRI_TRANSITIONS=233} [2024-06-28 00:05:32,914 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2024-06-28 00:05:32,914 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 233 transitions, 2719 flow [2024-06-28 00:05:32,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:32,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:32,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:32,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:05:32,914 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 00:05:32,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1093776439, now seen corresponding path program 16 times [2024-06-28 00:05:32,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:32,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378622215] [2024-06-28 00:05:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:32,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:34,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:34,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378622215] [2024-06-28 00:05:34,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378622215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:34,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:34,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:34,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37501012] [2024-06-28 00:05:34,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:34,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:34,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:34,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:34,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:34,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:34,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 233 transitions, 2719 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:34,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:34,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:34,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:34,676 INFO L124 PetriNetUnfolderBase]: 599/1072 cut-off events. [2024-06-28 00:05:34,677 INFO L125 PetriNetUnfolderBase]: For 76460/76460 co-relation queries the response was YES. [2024-06-28 00:05:34,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7319 conditions, 1072 events. 599/1072 cut-off events. For 76460/76460 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5582 event pairs, 76 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 7196. Up to 950 conditions per place. [2024-06-28 00:05:34,686 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 195 selfloop transitions, 48 changer transitions 0/245 dead transitions. [2024-06-28 00:05:34,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 245 transitions, 3240 flow [2024-06-28 00:05:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 00:05:34,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 00:05:34,687 INFO L175 Difference]: Start difference. First operand has 265 places, 233 transitions, 2719 flow. Second operand 9 states and 114 transitions. [2024-06-28 00:05:34,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 245 transitions, 3240 flow [2024-06-28 00:05:34,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 245 transitions, 3094 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:34,863 INFO L231 Difference]: Finished difference. Result has 267 places, 234 transitions, 2686 flow [2024-06-28 00:05:34,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2686, PETRI_PLACES=267, PETRI_TRANSITIONS=234} [2024-06-28 00:05:34,863 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 238 predicate places. [2024-06-28 00:05:34,863 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 234 transitions, 2686 flow [2024-06-28 00:05:34,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:34,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:34,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:34,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:05:34,864 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 00:05:34,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash 705897774, now seen corresponding path program 18 times [2024-06-28 00:05:34,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576398668] [2024-06-28 00:05:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:34,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:36,433 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 00:05:36,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:36,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576398668] [2024-06-28 00:05:36,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576398668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:36,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:36,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:36,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849789398] [2024-06-28 00:05:36,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:36,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:36,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:36,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:36,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:36,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:36,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 234 transitions, 2686 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:36,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:36,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:36,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:36,935 INFO L124 PetriNetUnfolderBase]: 605/1082 cut-off events. [2024-06-28 00:05:36,935 INFO L125 PetriNetUnfolderBase]: For 76437/76437 co-relation queries the response was YES. [2024-06-28 00:05:36,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 1082 events. 605/1082 cut-off events. For 76437/76437 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5640 event pairs, 61 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 7204. Up to 823 conditions per place. [2024-06-28 00:05:36,945 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 171 selfloop transitions, 77 changer transitions 0/250 dead transitions. [2024-06-28 00:05:36,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 250 transitions, 3256 flow [2024-06-28 00:05:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:36,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 00:05:36,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-28 00:05:36,946 INFO L175 Difference]: Start difference. First operand has 267 places, 234 transitions, 2686 flow. Second operand 9 states and 122 transitions. [2024-06-28 00:05:36,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 250 transitions, 3256 flow [2024-06-28 00:05:37,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 250 transitions, 3150 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:37,135 INFO L231 Difference]: Finished difference. Result has 268 places, 236 transitions, 2772 flow [2024-06-28 00:05:37,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2772, PETRI_PLACES=268, PETRI_TRANSITIONS=236} [2024-06-28 00:05:37,138 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-28 00:05:37,138 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 236 transitions, 2772 flow [2024-06-28 00:05:37,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:37,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:37,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:37,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:05:37,139 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 00:05:37,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash 705749749, now seen corresponding path program 17 times [2024-06-28 00:05:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:37,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932294576] [2024-06-28 00:05:37,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:37,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:38,500 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 00:05:38,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:38,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932294576] [2024-06-28 00:05:38,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932294576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:38,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:38,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:38,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785574322] [2024-06-28 00:05:38,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:38,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:38,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:38,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:38,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:38,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:38,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 236 transitions, 2772 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:38,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:38,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:38,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:38,916 INFO L124 PetriNetUnfolderBase]: 616/1103 cut-off events. [2024-06-28 00:05:38,916 INFO L125 PetriNetUnfolderBase]: For 83776/83776 co-relation queries the response was YES. [2024-06-28 00:05:38,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7677 conditions, 1103 events. 616/1103 cut-off events. For 83776/83776 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5776 event pairs, 75 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 7553. Up to 926 conditions per place. [2024-06-28 00:05:38,926 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 192 selfloop transitions, 57 changer transitions 0/251 dead transitions. [2024-06-28 00:05:38,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 251 transitions, 3490 flow [2024-06-28 00:05:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:38,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-28 00:05:38,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 00:05:38,928 INFO L175 Difference]: Start difference. First operand has 268 places, 236 transitions, 2772 flow. Second operand 8 states and 110 transitions. [2024-06-28 00:05:38,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 251 transitions, 3490 flow [2024-06-28 00:05:39,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 251 transitions, 3328 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:39,146 INFO L231 Difference]: Finished difference. Result has 269 places, 238 transitions, 2754 flow [2024-06-28 00:05:39,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2754, PETRI_PLACES=269, PETRI_TRANSITIONS=238} [2024-06-28 00:05:39,147 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2024-06-28 00:05:39,147 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 238 transitions, 2754 flow [2024-06-28 00:05:39,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:39,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:39,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:39,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:05:39,147 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 00:05:39,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:39,148 INFO L85 PathProgramCache]: Analyzing trace with hash 705753469, now seen corresponding path program 18 times [2024-06-28 00:05:39,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:39,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391634445] [2024-06-28 00:05:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:39,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:40,500 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 00:05:40,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:40,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391634445] [2024-06-28 00:05:40,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391634445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:40,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:40,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105840929] [2024-06-28 00:05:40,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:40,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:40,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:40,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:40,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:40,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:40,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 238 transitions, 2754 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:40,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:40,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:40,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:40,964 INFO L124 PetriNetUnfolderBase]: 613/1098 cut-off events. [2024-06-28 00:05:40,964 INFO L125 PetriNetUnfolderBase]: For 78440/78440 co-relation queries the response was YES. [2024-06-28 00:05:40,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 1098 events. 613/1098 cut-off events. For 78440/78440 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5754 event pairs, 63 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 7322. Up to 827 conditions per place. [2024-06-28 00:05:40,977 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 170 selfloop transitions, 80 changer transitions 0/252 dead transitions. [2024-06-28 00:05:40,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 252 transitions, 3298 flow [2024-06-28 00:05:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-28 00:05:40,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 00:05:40,980 INFO L175 Difference]: Start difference. First operand has 269 places, 238 transitions, 2754 flow. Second operand 8 states and 115 transitions. [2024-06-28 00:05:40,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 252 transitions, 3298 flow [2024-06-28 00:05:41,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 252 transitions, 3218 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:41,200 INFO L231 Difference]: Finished difference. Result has 272 places, 238 transitions, 2840 flow [2024-06-28 00:05:41,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2840, PETRI_PLACES=272, PETRI_TRANSITIONS=238} [2024-06-28 00:05:41,201 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2024-06-28 00:05:41,201 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 238 transitions, 2840 flow [2024-06-28 00:05:41,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:41,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:41,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:05:41,201 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 00:05:41,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash 705753624, now seen corresponding path program 19 times [2024-06-28 00:05:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:41,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373178726] [2024-06-28 00:05:41,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:42,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:42,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373178726] [2024-06-28 00:05:42,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373178726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:42,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:42,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753812019] [2024-06-28 00:05:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:42,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:42,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:42,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:42,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 238 transitions, 2840 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:42,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:42,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:42,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:43,169 INFO L124 PetriNetUnfolderBase]: 619/1108 cut-off events. [2024-06-28 00:05:43,169 INFO L125 PetriNetUnfolderBase]: For 78648/78648 co-relation queries the response was YES. [2024-06-28 00:05:43,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7664 conditions, 1108 events. 619/1108 cut-off events. For 78648/78648 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5832 event pairs, 64 based on Foata normal form. 2/1109 useless extension candidates. Maximal degree in co-relation 7539. Up to 816 conditions per place. [2024-06-28 00:05:43,181 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 163 selfloop transitions, 89 changer transitions 0/254 dead transitions. [2024-06-28 00:05:43,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 254 transitions, 3422 flow [2024-06-28 00:05:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-28 00:05:43,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-28 00:05:43,182 INFO L175 Difference]: Start difference. First operand has 272 places, 238 transitions, 2840 flow. Second operand 9 states and 124 transitions. [2024-06-28 00:05:43,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 254 transitions, 3422 flow [2024-06-28 00:05:43,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 254 transitions, 3248 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:43,389 INFO L231 Difference]: Finished difference. Result has 273 places, 240 transitions, 2886 flow [2024-06-28 00:05:43,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2886, PETRI_PLACES=273, PETRI_TRANSITIONS=240} [2024-06-28 00:05:43,389 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 244 predicate places. [2024-06-28 00:05:43,390 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 240 transitions, 2886 flow [2024-06-28 00:05:43,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:43,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:43,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:43,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:05:43,390 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 00:05:43,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:43,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1630996679, now seen corresponding path program 19 times [2024-06-28 00:05:43,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:43,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663685446] [2024-06-28 00:05:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:43,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:44,805 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 00:05:44,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663685446] [2024-06-28 00:05:44,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663685446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:44,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:44,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:44,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782552125] [2024-06-28 00:05:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:44,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:44,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:44,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:44,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:44,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:44,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 240 transitions, 2886 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:44,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:44,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:44,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:45,227 INFO L124 PetriNetUnfolderBase]: 623/1117 cut-off events. [2024-06-28 00:05:45,227 INFO L125 PetriNetUnfolderBase]: For 78795/78795 co-relation queries the response was YES. [2024-06-28 00:05:45,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7727 conditions, 1117 events. 623/1117 cut-off events. For 78795/78795 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5888 event pairs, 52 based on Foata normal form. 2/1118 useless extension candidates. Maximal degree in co-relation 7601. Up to 866 conditions per place. [2024-06-28 00:05:45,239 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 183 selfloop transitions, 75 changer transitions 0/260 dead transitions. [2024-06-28 00:05:45,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 260 transitions, 3640 flow [2024-06-28 00:05:45,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:45,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-28 00:05:45,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 00:05:45,240 INFO L175 Difference]: Start difference. First operand has 273 places, 240 transitions, 2886 flow. Second operand 8 states and 117 transitions. [2024-06-28 00:05:45,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 260 transitions, 3640 flow [2024-06-28 00:05:45,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 260 transitions, 3450 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:45,471 INFO L231 Difference]: Finished difference. Result has 274 places, 241 transitions, 2865 flow [2024-06-28 00:05:45,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2696, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2865, PETRI_PLACES=274, PETRI_TRANSITIONS=241} [2024-06-28 00:05:45,471 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-06-28 00:05:45,471 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 241 transitions, 2865 flow [2024-06-28 00:05:45,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:45,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:45,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:45,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:05:45,472 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 00:05:45,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:45,473 INFO L85 PathProgramCache]: Analyzing trace with hash -730778746, now seen corresponding path program 20 times [2024-06-28 00:05:45,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:45,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445545750] [2024-06-28 00:05:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:45,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:47,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:47,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445545750] [2024-06-28 00:05:47,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445545750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:47,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:47,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:47,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273327387] [2024-06-28 00:05:47,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:47,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:47,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:47,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:47,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:47,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:47,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 241 transitions, 2865 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:47,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:47,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:47,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:47,604 INFO L124 PetriNetUnfolderBase]: 632/1132 cut-off events. [2024-06-28 00:05:47,604 INFO L125 PetriNetUnfolderBase]: For 80496/80496 co-relation queries the response was YES. [2024-06-28 00:05:47,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7800 conditions, 1132 events. 632/1132 cut-off events. For 80496/80496 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6017 event pairs, 54 based on Foata normal form. 2/1133 useless extension candidates. Maximal degree in co-relation 7674. Up to 734 conditions per place. [2024-06-28 00:05:47,617 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 145 selfloop transitions, 119 changer transitions 0/266 dead transitions. [2024-06-28 00:05:47,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 266 transitions, 3696 flow [2024-06-28 00:05:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:47,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 00:05:47,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48518518518518516 [2024-06-28 00:05:47,618 INFO L175 Difference]: Start difference. First operand has 274 places, 241 transitions, 2865 flow. Second operand 9 states and 131 transitions. [2024-06-28 00:05:47,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 266 transitions, 3696 flow [2024-06-28 00:05:47,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 266 transitions, 3482 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:47,851 INFO L231 Difference]: Finished difference. Result has 276 places, 245 transitions, 3021 flow [2024-06-28 00:05:47,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3021, PETRI_PLACES=276, PETRI_TRANSITIONS=245} [2024-06-28 00:05:47,851 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 247 predicate places. [2024-06-28 00:05:47,851 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 245 transitions, 3021 flow [2024-06-28 00:05:47,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:47,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:47,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:47,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:05:47,852 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 00:05:47,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:47,852 INFO L85 PathProgramCache]: Analyzing trace with hash -730778901, now seen corresponding path program 20 times [2024-06-28 00:05:47,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:47,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328944639] [2024-06-28 00:05:47,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:47,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:49,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:49,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328944639] [2024-06-28 00:05:49,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328944639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:49,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:49,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289778301] [2024-06-28 00:05:49,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:49,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:49,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:49,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:49,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 245 transitions, 3021 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:49,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:49,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:49,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:49,709 INFO L124 PetriNetUnfolderBase]: 636/1140 cut-off events. [2024-06-28 00:05:49,709 INFO L125 PetriNetUnfolderBase]: For 80922/80922 co-relation queries the response was YES. [2024-06-28 00:05:49,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7972 conditions, 1140 events. 636/1140 cut-off events. For 80922/80922 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6055 event pairs, 78 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 7845. Up to 976 conditions per place. [2024-06-28 00:05:49,720 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 193 selfloop transitions, 68 changer transitions 0/263 dead transitions. [2024-06-28 00:05:49,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 263 transitions, 3605 flow [2024-06-28 00:05:49,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 00:05:49,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-28 00:05:49,721 INFO L175 Difference]: Start difference. First operand has 276 places, 245 transitions, 3021 flow. Second operand 9 states and 122 transitions. [2024-06-28 00:05:49,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 263 transitions, 3605 flow [2024-06-28 00:05:49,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 263 transitions, 3315 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:49,956 INFO L231 Difference]: Finished difference. Result has 277 places, 246 transitions, 2886 flow [2024-06-28 00:05:49,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2886, PETRI_PLACES=277, PETRI_TRANSITIONS=246} [2024-06-28 00:05:49,957 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 248 predicate places. [2024-06-28 00:05:49,957 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 246 transitions, 2886 flow [2024-06-28 00:05:49,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:49,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:49,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:49,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:05:49,957 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 00:05:49,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1381799614, now seen corresponding path program 21 times [2024-06-28 00:05:49,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:49,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588531472] [2024-06-28 00:05:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:49,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:51,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:51,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588531472] [2024-06-28 00:05:51,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588531472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:51,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:51,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:51,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224015218] [2024-06-28 00:05:51,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:51,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:51,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:51,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:51,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:51,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:51,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 246 transitions, 2886 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:51,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:51,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:51,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:51,941 INFO L124 PetriNetUnfolderBase]: 642/1152 cut-off events. [2024-06-28 00:05:51,941 INFO L125 PetriNetUnfolderBase]: For 80516/80516 co-relation queries the response was YES. [2024-06-28 00:05:51,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7845 conditions, 1152 events. 642/1152 cut-off events. For 80516/80516 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6147 event pairs, 75 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 7718. Up to 908 conditions per place. [2024-06-28 00:05:51,952 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 184 selfloop transitions, 79 changer transitions 0/265 dead transitions. [2024-06-28 00:05:51,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 265 transitions, 3509 flow [2024-06-28 00:05:51,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-28 00:05:51,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-28 00:05:51,953 INFO L175 Difference]: Start difference. First operand has 277 places, 246 transitions, 2886 flow. Second operand 9 states and 124 transitions. [2024-06-28 00:05:51,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 265 transitions, 3509 flow [2024-06-28 00:05:52,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 265 transitions, 3367 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:52,164 INFO L231 Difference]: Finished difference. Result has 278 places, 248 transitions, 2950 flow [2024-06-28 00:05:52,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2950, PETRI_PLACES=278, PETRI_TRANSITIONS=248} [2024-06-28 00:05:52,165 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 249 predicate places. [2024-06-28 00:05:52,165 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 248 transitions, 2950 flow [2024-06-28 00:05:52,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:52,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:52,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:52,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:05:52,166 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 00:05:52,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1381793879, now seen corresponding path program 21 times [2024-06-28 00:05:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:52,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920603187] [2024-06-28 00:05:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:52,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:53,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:53,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920603187] [2024-06-28 00:05:53,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920603187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:53,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:53,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26011284] [2024-06-28 00:05:53,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:53,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:53,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:53,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:53,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:53,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 248 transitions, 2950 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:53,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:53,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:53,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:54,033 INFO L124 PetriNetUnfolderBase]: 646/1160 cut-off events. [2024-06-28 00:05:54,033 INFO L125 PetriNetUnfolderBase]: For 80723/80723 co-relation queries the response was YES. [2024-06-28 00:05:54,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7936 conditions, 1160 events. 646/1160 cut-off events. For 80723/80723 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6199 event pairs, 100 based on Foata normal form. 2/1161 useless extension candidates. Maximal degree in co-relation 7809. Up to 1035 conditions per place. [2024-06-28 00:05:54,043 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 210 selfloop transitions, 51 changer transitions 0/263 dead transitions. [2024-06-28 00:05:54,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 263 transitions, 3524 flow [2024-06-28 00:05:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:54,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-28 00:05:54,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 00:05:54,044 INFO L175 Difference]: Start difference. First operand has 278 places, 248 transitions, 2950 flow. Second operand 8 states and 110 transitions. [2024-06-28 00:05:54,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 263 transitions, 3524 flow [2024-06-28 00:05:54,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 263 transitions, 3350 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:54,269 INFO L231 Difference]: Finished difference. Result has 279 places, 249 transitions, 2899 flow [2024-06-28 00:05:54,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2899, PETRI_PLACES=279, PETRI_TRANSITIONS=249} [2024-06-28 00:05:54,270 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 250 predicate places. [2024-06-28 00:05:54,270 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 249 transitions, 2899 flow [2024-06-28 00:05:54,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:54,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:54,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:54,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:05:54,270 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 00:05:54,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1387371740, now seen corresponding path program 6 times [2024-06-28 00:05:54,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:54,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366499552] [2024-06-28 00:05:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:54,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:56,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366499552] [2024-06-28 00:05:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366499552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:56,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:56,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:56,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694888874] [2024-06-28 00:05:56,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:56,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:56,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:56,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:56,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:05:56,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 249 transitions, 2899 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:56,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:56,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:05:56,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:56,900 INFO L124 PetriNetUnfolderBase]: 647/1161 cut-off events. [2024-06-28 00:05:56,900 INFO L125 PetriNetUnfolderBase]: For 82361/82361 co-relation queries the response was YES. [2024-06-28 00:05:56,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 1161 events. 647/1161 cut-off events. For 82361/82361 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6206 event pairs, 63 based on Foata normal form. 4/1164 useless extension candidates. Maximal degree in co-relation 7548. Up to 923 conditions per place. [2024-06-28 00:05:56,910 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 201 selfloop transitions, 63 changer transitions 0/266 dead transitions. [2024-06-28 00:05:56,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 266 transitions, 3487 flow [2024-06-28 00:05:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 00:05:56,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-28 00:05:56,912 INFO L175 Difference]: Start difference. First operand has 279 places, 249 transitions, 2899 flow. Second operand 10 states and 126 transitions. [2024-06-28 00:05:56,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 266 transitions, 3487 flow [2024-06-28 00:05:57,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 266 transitions, 3377 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:57,142 INFO L231 Difference]: Finished difference. Result has 282 places, 250 transitions, 2932 flow [2024-06-28 00:05:57,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2932, PETRI_PLACES=282, PETRI_TRANSITIONS=250} [2024-06-28 00:05:57,143 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 253 predicate places. [2024-06-28 00:05:57,143 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 250 transitions, 2932 flow [2024-06-28 00:05:57,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:57,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:57,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:57,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:05:57,143 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 00:05:57,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:57,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1817507404, now seen corresponding path program 22 times [2024-06-28 00:05:57,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:57,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298862354] [2024-06-28 00:05:57,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:57,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:58,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:58,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298862354] [2024-06-28 00:05:58,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298862354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:58,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:58,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:58,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586207301] [2024-06-28 00:05:58,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:58,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:58,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:58,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:58,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:58,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:05:58,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 250 transitions, 2932 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:58,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:58,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:05:58,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:59,348 INFO L124 PetriNetUnfolderBase]: 653/1170 cut-off events. [2024-06-28 00:05:59,348 INFO L125 PetriNetUnfolderBase]: For 75049/75049 co-relation queries the response was YES. [2024-06-28 00:05:59,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7803 conditions, 1170 events. 653/1170 cut-off events. For 75049/75049 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6274 event pairs, 56 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 7675. Up to 929 conditions per place. [2024-06-28 00:05:59,362 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 195 selfloop transitions, 73 changer transitions 0/270 dead transitions. [2024-06-28 00:05:59,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 270 transitions, 3568 flow [2024-06-28 00:05:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:05:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:05:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 00:05:59,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 00:05:59,363 INFO L175 Difference]: Start difference. First operand has 282 places, 250 transitions, 2932 flow. Second operand 12 states and 152 transitions. [2024-06-28 00:05:59,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 270 transitions, 3568 flow [2024-06-28 00:05:59,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 270 transitions, 3390 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:59,578 INFO L231 Difference]: Finished difference. Result has 285 places, 252 transitions, 2952 flow [2024-06-28 00:05:59,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2952, PETRI_PLACES=285, PETRI_TRANSITIONS=252} [2024-06-28 00:05:59,578 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-28 00:05:59,578 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 252 transitions, 2952 flow [2024-06-28 00:05:59,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:59,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:59,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:59,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:05:59,579 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 00:05:59,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:59,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2047146834, now seen corresponding path program 23 times [2024-06-28 00:05:59,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:59,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763046545] [2024-06-28 00:05:59,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:59,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:01,067 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 00:06:01,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:01,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763046545] [2024-06-28 00:06:01,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763046545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:01,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:01,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972115824] [2024-06-28 00:06:01,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:01,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:01,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:01,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:01,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:06:01,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 252 transitions, 2952 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:01,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:01,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:06:01,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:01,725 INFO L124 PetriNetUnfolderBase]: 659/1180 cut-off events. [2024-06-28 00:06:01,725 INFO L125 PetriNetUnfolderBase]: For 76468/76468 co-relation queries the response was YES. [2024-06-28 00:06:01,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 1180 events. 659/1180 cut-off events. For 76468/76468 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6326 event pairs, 57 based on Foata normal form. 2/1181 useless extension candidates. Maximal degree in co-relation 7725. Up to 939 conditions per place. [2024-06-28 00:06:01,738 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 197 selfloop transitions, 71 changer transitions 0/270 dead transitions. [2024-06-28 00:06:01,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 270 transitions, 3588 flow [2024-06-28 00:06:01,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 00:06:01,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-06-28 00:06:01,739 INFO L175 Difference]: Start difference. First operand has 285 places, 252 transitions, 2952 flow. Second operand 10 states and 133 transitions. [2024-06-28 00:06:01,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 270 transitions, 3588 flow [2024-06-28 00:06:01,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 270 transitions, 3422 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:01,958 INFO L231 Difference]: Finished difference. Result has 285 places, 254 transitions, 2984 flow [2024-06-28 00:06:01,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2984, PETRI_PLACES=285, PETRI_TRANSITIONS=254} [2024-06-28 00:06:01,959 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-28 00:06:01,959 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 254 transitions, 2984 flow [2024-06-28 00:06:01,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:01,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:01,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:01,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:06:01,959 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 00:06:01,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:01,959 INFO L85 PathProgramCache]: Analyzing trace with hash -281237183, now seen corresponding path program 22 times [2024-06-28 00:06:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:01,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766678553] [2024-06-28 00:06:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:01,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:03,432 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 00:06:03,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:03,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766678553] [2024-06-28 00:06:03,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766678553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:03,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:03,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:03,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569012978] [2024-06-28 00:06:03,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:03,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:06:03,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 254 transitions, 2984 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:03,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:03,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:06:03,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:03,968 INFO L124 PetriNetUnfolderBase]: 656/1175 cut-off events. [2024-06-28 00:06:03,968 INFO L125 PetriNetUnfolderBase]: For 70258/70258 co-relation queries the response was YES. [2024-06-28 00:06:03,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7654 conditions, 1175 events. 656/1175 cut-off events. For 70258/70258 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6306 event pairs, 81 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 7525. Up to 1053 conditions per place. [2024-06-28 00:06:03,977 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 217 selfloop transitions, 47 changer transitions 0/266 dead transitions. [2024-06-28 00:06:03,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 266 transitions, 3540 flow [2024-06-28 00:06:03,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 00:06:03,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:06:03,978 INFO L175 Difference]: Start difference. First operand has 285 places, 254 transitions, 2984 flow. Second operand 9 states and 117 transitions. [2024-06-28 00:06:03,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 266 transitions, 3540 flow [2024-06-28 00:06:04,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 266 transitions, 3368 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:04,203 INFO L231 Difference]: Finished difference. Result has 286 places, 254 transitions, 2912 flow [2024-06-28 00:06:04,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2912, PETRI_PLACES=286, PETRI_TRANSITIONS=254} [2024-06-28 00:06:04,203 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 257 predicate places. [2024-06-28 00:06:04,203 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 254 transitions, 2912 flow [2024-06-28 00:06:04,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:04,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:04,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:04,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:06:04,204 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 00:06:04,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash -281237028, now seen corresponding path program 24 times [2024-06-28 00:06:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:04,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179980348] [2024-06-28 00:06:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:04,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:05,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:05,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179980348] [2024-06-28 00:06:05,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179980348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:05,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:05,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:05,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711735359] [2024-06-28 00:06:05,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:05,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:05,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:05,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:05,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:05,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:06:05,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 254 transitions, 2912 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:05,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:05,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:06:05,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:06,178 INFO L124 PetriNetUnfolderBase]: 662/1185 cut-off events. [2024-06-28 00:06:06,178 INFO L125 PetriNetUnfolderBase]: For 71621/71621 co-relation queries the response was YES. [2024-06-28 00:06:06,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7647 conditions, 1185 events. 662/1185 cut-off events. For 71621/71621 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6354 event pairs, 57 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 7518. Up to 901 conditions per place. [2024-06-28 00:06:06,189 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 186 selfloop transitions, 84 changer transitions 0/272 dead transitions. [2024-06-28 00:06:06,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 272 transitions, 3556 flow [2024-06-28 00:06:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:06:06,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2024-06-28 00:06:06,191 INFO L175 Difference]: Start difference. First operand has 286 places, 254 transitions, 2912 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:06:06,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 272 transitions, 3556 flow [2024-06-28 00:06:06,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 272 transitions, 3369 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:06,404 INFO L231 Difference]: Finished difference. Result has 285 places, 256 transitions, 2953 flow [2024-06-28 00:06:06,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2953, PETRI_PLACES=285, PETRI_TRANSITIONS=256} [2024-06-28 00:06:06,405 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-28 00:06:06,405 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 256 transitions, 2953 flow [2024-06-28 00:06:06,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:06,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:06,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:06,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:06:06,405 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 00:06:06,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:06,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1631144704, now seen corresponding path program 25 times [2024-06-28 00:06:06,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:06,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660346825] [2024-06-28 00:06:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:07,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:07,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660346825] [2024-06-28 00:06:07,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660346825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:07,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:07,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:07,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535392844] [2024-06-28 00:06:07,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:07,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:07,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:07,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:07,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:07,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:06:07,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 256 transitions, 2953 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:07,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:07,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:06:07,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:08,267 INFO L124 PetriNetUnfolderBase]: 658/1182 cut-off events. [2024-06-28 00:06:08,267 INFO L125 PetriNetUnfolderBase]: For 63689/63689 co-relation queries the response was YES. [2024-06-28 00:06:08,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7454 conditions, 1182 events. 658/1182 cut-off events. For 63689/63689 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6371 event pairs, 73 based on Foata normal form. 2/1183 useless extension candidates. Maximal degree in co-relation 7325. Up to 911 conditions per place. [2024-06-28 00:06:08,279 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 183 selfloop transitions, 89 changer transitions 0/274 dead transitions. [2024-06-28 00:06:08,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 274 transitions, 3564 flow [2024-06-28 00:06:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:06:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:06:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 00:06:08,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-28 00:06:08,280 INFO L175 Difference]: Start difference. First operand has 285 places, 256 transitions, 2953 flow. Second operand 8 states and 121 transitions. [2024-06-28 00:06:08,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 274 transitions, 3564 flow [2024-06-28 00:06:08,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 274 transitions, 3363 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:08,488 INFO L231 Difference]: Finished difference. Result has 285 places, 256 transitions, 2938 flow [2024-06-28 00:06:08,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2938, PETRI_PLACES=285, PETRI_TRANSITIONS=256} [2024-06-28 00:06:08,488 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-28 00:06:08,488 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 256 transitions, 2938 flow [2024-06-28 00:06:08,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:08,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:08,489 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 00:06:08,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:06:08,489 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 00:06:08,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash 824058064, now seen corresponding path program 1 times [2024-06-28 00:06:08,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:08,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752189404] [2024-06-28 00:06:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:08,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:10,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:10,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752189404] [2024-06-28 00:06:10,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752189404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:10,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:10,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:10,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6505577] [2024-06-28 00:06:10,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:10,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:10,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:10,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:10,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:10,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:10,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 256 transitions, 2938 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 00:06:10,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:10,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:10,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:10,627 INFO L124 PetriNetUnfolderBase]: 699/1266 cut-off events. [2024-06-28 00:06:10,627 INFO L125 PetriNetUnfolderBase]: For 127384/127384 co-relation queries the response was YES. [2024-06-28 00:06:10,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8601 conditions, 1266 events. 699/1266 cut-off events. For 127384/127384 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6889 event pairs, 173 based on Foata normal form. 8/1273 useless extension candidates. Maximal degree in co-relation 8472. Up to 780 conditions per place. [2024-06-28 00:06:10,639 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 205 selfloop transitions, 61 changer transitions 13/281 dead transitions. [2024-06-28 00:06:10,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 281 transitions, 3780 flow [2024-06-28 00:06:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:10,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:06:10,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:06:10,640 INFO L175 Difference]: Start difference. First operand has 285 places, 256 transitions, 2938 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:06:10,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 281 transitions, 3780 flow [2024-06-28 00:06:10,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 281 transitions, 3563 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:10,950 INFO L231 Difference]: Finished difference. Result has 288 places, 253 transitions, 2824 flow [2024-06-28 00:06:10,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2824, PETRI_PLACES=288, PETRI_TRANSITIONS=253} [2024-06-28 00:06:10,950 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 259 predicate places. [2024-06-28 00:06:10,950 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 253 transitions, 2824 flow [2024-06-28 00:06:10,950 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 00:06:10,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:10,951 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 00:06:10,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:06:10,951 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 00:06:10,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:10,951 INFO L85 PathProgramCache]: Analyzing trace with hash 882270484, now seen corresponding path program 2 times [2024-06-28 00:06:10,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:10,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90007127] [2024-06-28 00:06:10,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:10,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:12,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:12,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90007127] [2024-06-28 00:06:12,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90007127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:12,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:12,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:12,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665952964] [2024-06-28 00:06:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:12,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:12,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:12,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:12,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:12,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 253 transitions, 2824 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 00:06:12,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:12,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:12,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:13,041 INFO L124 PetriNetUnfolderBase]: 691/1254 cut-off events. [2024-06-28 00:06:13,041 INFO L125 PetriNetUnfolderBase]: For 134932/134932 co-relation queries the response was YES. [2024-06-28 00:06:13,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8410 conditions, 1254 events. 691/1254 cut-off events. For 134932/134932 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6793 event pairs, 183 based on Foata normal form. 10/1263 useless extension candidates. Maximal degree in co-relation 8280. Up to 1039 conditions per place. [2024-06-28 00:06:13,054 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 200 selfloop transitions, 64 changer transitions 5/271 dead transitions. [2024-06-28 00:06:13,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 271 transitions, 3436 flow [2024-06-28 00:06:13,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:13,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 00:06:13,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-28 00:06:13,055 INFO L175 Difference]: Start difference. First operand has 288 places, 253 transitions, 2824 flow. Second operand 10 states and 124 transitions. [2024-06-28 00:06:13,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 271 transitions, 3436 flow [2024-06-28 00:06:13,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 271 transitions, 3339 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:13,345 INFO L231 Difference]: Finished difference. Result has 287 places, 253 transitions, 2859 flow [2024-06-28 00:06:13,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2727, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2859, PETRI_PLACES=287, PETRI_TRANSITIONS=253} [2024-06-28 00:06:13,346 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 258 predicate places. [2024-06-28 00:06:13,346 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 253 transitions, 2859 flow [2024-06-28 00:06:13,346 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 00:06:13,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:13,346 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 00:06:13,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:06:13,346 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 00:06:13,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:13,347 INFO L85 PathProgramCache]: Analyzing trace with hash 882265834, now seen corresponding path program 3 times [2024-06-28 00:06:13,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:13,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058227932] [2024-06-28 00:06:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:13,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:15,189 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 00:06:15,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:15,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058227932] [2024-06-28 00:06:15,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058227932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:15,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:15,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:15,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970995276] [2024-06-28 00:06:15,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:15,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:15,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:15,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:15,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:15,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:15,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 253 transitions, 2859 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 00:06:15,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:15,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:15,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:15,851 INFO L124 PetriNetUnfolderBase]: 712/1305 cut-off events. [2024-06-28 00:06:15,851 INFO L125 PetriNetUnfolderBase]: For 150522/150522 co-relation queries the response was YES. [2024-06-28 00:06:15,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9299 conditions, 1305 events. 712/1305 cut-off events. For 150522/150522 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7148 event pairs, 173 based on Foata normal form. 8/1312 useless extension candidates. Maximal degree in co-relation 9169. Up to 889 conditions per place. [2024-06-28 00:06:15,863 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 181 selfloop transitions, 85 changer transitions 8/276 dead transitions. [2024-06-28 00:06:15,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 276 transitions, 3871 flow [2024-06-28 00:06:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:06:15,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-28 00:06:15,864 INFO L175 Difference]: Start difference. First operand has 287 places, 253 transitions, 2859 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:06:15,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 276 transitions, 3871 flow [2024-06-28 00:06:16,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 276 transitions, 3741 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:16,204 INFO L231 Difference]: Finished difference. Result has 290 places, 251 transitions, 2883 flow [2024-06-28 00:06:16,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2729, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2883, PETRI_PLACES=290, PETRI_TRANSITIONS=251} [2024-06-28 00:06:16,204 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 261 predicate places. [2024-06-28 00:06:16,204 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 251 transitions, 2883 flow [2024-06-28 00:06:16,204 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 00:06:16,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:16,204 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 00:06:16,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:06:16,204 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 00:06:16,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:16,205 INFO L85 PathProgramCache]: Analyzing trace with hash 882150514, now seen corresponding path program 4 times [2024-06-28 00:06:16,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:16,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986730974] [2024-06-28 00:06:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:16,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:17,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:17,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986730974] [2024-06-28 00:06:17,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986730974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:17,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:17,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:17,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123965398] [2024-06-28 00:06:17,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:17,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:17,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:17,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:17,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:17,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:17,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 251 transitions, 2883 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 00:06:17,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:17,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:17,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:18,377 INFO L124 PetriNetUnfolderBase]: 706/1295 cut-off events. [2024-06-28 00:06:18,377 INFO L125 PetriNetUnfolderBase]: For 153969/153969 co-relation queries the response was YES. [2024-06-28 00:06:18,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9355 conditions, 1295 events. 706/1295 cut-off events. For 153969/153969 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7077 event pairs, 194 based on Foata normal form. 8/1302 useless extension candidates. Maximal degree in co-relation 9224. Up to 1007 conditions per place. [2024-06-28 00:06:18,387 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 201 selfloop transitions, 59 changer transitions 11/273 dead transitions. [2024-06-28 00:06:18,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 273 transitions, 3703 flow [2024-06-28 00:06:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:06:18,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-28 00:06:18,387 INFO L175 Difference]: Start difference. First operand has 290 places, 251 transitions, 2883 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:06:18,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 273 transitions, 3703 flow [2024-06-28 00:06:18,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 273 transitions, 3525 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:18,716 INFO L231 Difference]: Finished difference. Result has 289 places, 248 transitions, 2796 flow [2024-06-28 00:06:18,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2707, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2796, PETRI_PLACES=289, PETRI_TRANSITIONS=248} [2024-06-28 00:06:18,716 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2024-06-28 00:06:18,716 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 248 transitions, 2796 flow [2024-06-28 00:06:18,717 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 00:06:18,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:18,717 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 00:06:18,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:06:18,717 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 00:06:18,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash -720609072, now seen corresponding path program 5 times [2024-06-28 00:06:18,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:18,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366363703] [2024-06-28 00:06:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:20,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:20,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366363703] [2024-06-28 00:06:20,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366363703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:20,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:20,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093327387] [2024-06-28 00:06:20,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:20,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:20,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:20,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:20,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 248 transitions, 2796 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 00:06:20,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:20,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:20,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:20,981 INFO L124 PetriNetUnfolderBase]: 700/1285 cut-off events. [2024-06-28 00:06:20,981 INFO L125 PetriNetUnfolderBase]: For 162368/162368 co-relation queries the response was YES. [2024-06-28 00:06:20,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9215 conditions, 1285 events. 700/1285 cut-off events. For 162368/162368 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6992 event pairs, 175 based on Foata normal form. 10/1294 useless extension candidates. Maximal degree in co-relation 9084. Up to 1082 conditions per place. [2024-06-28 00:06:20,992 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 209 selfloop transitions, 44 changer transitions 11/266 dead transitions. [2024-06-28 00:06:20,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 266 transitions, 3408 flow [2024-06-28 00:06:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:20,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 00:06:20,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-28 00:06:20,992 INFO L175 Difference]: Start difference. First operand has 289 places, 248 transitions, 2796 flow. Second operand 11 states and 128 transitions. [2024-06-28 00:06:20,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 266 transitions, 3408 flow [2024-06-28 00:06:21,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 266 transitions, 3285 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:21,292 INFO L231 Difference]: Finished difference. Result has 289 places, 245 transitions, 2735 flow [2024-06-28 00:06:21,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2735, PETRI_PLACES=289, PETRI_TRANSITIONS=245} [2024-06-28 00:06:21,292 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2024-06-28 00:06:21,292 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 245 transitions, 2735 flow [2024-06-28 00:06:21,292 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 00:06:21,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:21,292 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 00:06:21,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:06:21,293 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 00:06:21,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:21,293 INFO L85 PathProgramCache]: Analyzing trace with hash -720786702, now seen corresponding path program 6 times [2024-06-28 00:06:21,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:21,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501148803] [2024-06-28 00:06:21,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:21,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:22,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:22,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501148803] [2024-06-28 00:06:22,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501148803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:22,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528058426] [2024-06-28 00:06:22,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:22,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:22,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:22,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:22,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:22,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 245 transitions, 2735 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 00:06:22,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:22,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:22,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:23,441 INFO L124 PetriNetUnfolderBase]: 715/1322 cut-off events. [2024-06-28 00:06:23,441 INFO L125 PetriNetUnfolderBase]: For 194535/194535 co-relation queries the response was YES. [2024-06-28 00:06:23,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10176 conditions, 1322 events. 715/1322 cut-off events. For 194535/194535 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7306 event pairs, 185 based on Foata normal form. 8/1329 useless extension candidates. Maximal degree in co-relation 10045. Up to 1048 conditions per place. [2024-06-28 00:06:23,455 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 210 selfloop transitions, 49 changer transitions 7/268 dead transitions. [2024-06-28 00:06:23,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 268 transitions, 3563 flow [2024-06-28 00:06:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:06:23,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-28 00:06:23,456 INFO L175 Difference]: Start difference. First operand has 289 places, 245 transitions, 2735 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:06:23,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 268 transitions, 3563 flow [2024-06-28 00:06:23,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 268 transitions, 3471 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:23,910 INFO L231 Difference]: Finished difference. Result has 289 places, 243 transitions, 2724 flow [2024-06-28 00:06:23,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2724, PETRI_PLACES=289, PETRI_TRANSITIONS=243} [2024-06-28 00:06:23,911 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2024-06-28 00:06:23,911 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 243 transitions, 2724 flow [2024-06-28 00:06:23,911 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 00:06:23,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:23,911 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 00:06:23,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:06:23,911 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 00:06:23,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash -720782052, now seen corresponding path program 7 times [2024-06-28 00:06:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680811515] [2024-06-28 00:06:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:23,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:25,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:25,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680811515] [2024-06-28 00:06:25,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680811515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:25,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:25,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:25,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27009496] [2024-06-28 00:06:25,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:25,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:25,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:25,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:25,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:25,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:25,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 243 transitions, 2724 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 00:06:25,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:25,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:25,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:26,229 INFO L124 PetriNetUnfolderBase]: 684/1261 cut-off events. [2024-06-28 00:06:26,230 INFO L125 PetriNetUnfolderBase]: For 162060/162060 co-relation queries the response was YES. [2024-06-28 00:06:26,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9062 conditions, 1261 events. 684/1261 cut-off events. For 162060/162060 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6892 event pairs, 198 based on Foata normal form. 10/1270 useless extension candidates. Maximal degree in co-relation 8931. Up to 1128 conditions per place. [2024-06-28 00:06:26,241 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 210 selfloop transitions, 34 changer transitions 13/259 dead transitions. [2024-06-28 00:06:26,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 259 transitions, 3306 flow [2024-06-28 00:06:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:06:26,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 00:06:26,242 INFO L175 Difference]: Start difference. First operand has 289 places, 243 transitions, 2724 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:06:26,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 259 transitions, 3306 flow [2024-06-28 00:06:26,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 259 transitions, 3206 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:26,549 INFO L231 Difference]: Finished difference. Result has 289 places, 239 transitions, 2643 flow [2024-06-28 00:06:26,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2624, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2643, PETRI_PLACES=289, PETRI_TRANSITIONS=239} [2024-06-28 00:06:26,550 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2024-06-28 00:06:26,550 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 239 transitions, 2643 flow [2024-06-28 00:06:26,550 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 00:06:26,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:26,550 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 00:06:26,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:06:26,550 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 00:06:26,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:26,550 INFO L85 PathProgramCache]: Analyzing trace with hash -725250702, now seen corresponding path program 8 times [2024-06-28 00:06:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:26,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102897880] [2024-06-28 00:06:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:26,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:28,191 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 00:06:28,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:28,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102897880] [2024-06-28 00:06:28,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102897880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:28,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:28,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:28,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713438176] [2024-06-28 00:06:28,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:28,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:28,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:28,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 239 transitions, 2643 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:28,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:28,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:28,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:28,846 INFO L124 PetriNetUnfolderBase]: 675/1246 cut-off events. [2024-06-28 00:06:28,847 INFO L125 PetriNetUnfolderBase]: For 161924/161924 co-relation queries the response was YES. [2024-06-28 00:06:28,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8908 conditions, 1246 events. 675/1246 cut-off events. For 161924/161924 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6784 event pairs, 197 based on Foata normal form. 10/1255 useless extension candidates. Maximal degree in co-relation 8777. Up to 1119 conditions per place. [2024-06-28 00:06:28,858 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 210 selfloop transitions, 32 changer transitions 11/255 dead transitions. [2024-06-28 00:06:28,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 255 transitions, 3217 flow [2024-06-28 00:06:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:06:28,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 00:06:28,859 INFO L175 Difference]: Start difference. First operand has 289 places, 239 transitions, 2643 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:06:28,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 255 transitions, 3217 flow [2024-06-28 00:06:29,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 255 transitions, 3072 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:29,182 INFO L231 Difference]: Finished difference. Result has 284 places, 236 transitions, 2533 flow [2024-06-28 00:06:29,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2533, PETRI_PLACES=284, PETRI_TRANSITIONS=236} [2024-06-28 00:06:29,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 255 predicate places. [2024-06-28 00:06:29,183 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 236 transitions, 2533 flow [2024-06-28 00:06:29,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:29,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:29,183 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 00:06:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:06:29,184 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 00:06:29,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash -725255352, now seen corresponding path program 9 times [2024-06-28 00:06:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:29,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707769702] [2024-06-28 00:06:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:30,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:30,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707769702] [2024-06-28 00:06:30,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707769702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:30,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:30,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:30,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463587562] [2024-06-28 00:06:30,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:30,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:30,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:30,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:30,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:30,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:30,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 236 transitions, 2533 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 00:06:30,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:30,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:30,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:31,398 INFO L124 PetriNetUnfolderBase]: 663/1226 cut-off events. [2024-06-28 00:06:31,398 INFO L125 PetriNetUnfolderBase]: For 150052/150052 co-relation queries the response was YES. [2024-06-28 00:06:31,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8634 conditions, 1226 events. 663/1226 cut-off events. For 150052/150052 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6658 event pairs, 193 based on Foata normal form. 8/1233 useless extension candidates. Maximal degree in co-relation 8505. Up to 1109 conditions per place. [2024-06-28 00:06:31,410 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 208 selfloop transitions, 30 changer transitions 11/251 dead transitions. [2024-06-28 00:06:31,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 251 transitions, 3085 flow [2024-06-28 00:06:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:06:31,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-28 00:06:31,411 INFO L175 Difference]: Start difference. First operand has 284 places, 236 transitions, 2533 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:06:31,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 251 transitions, 3085 flow [2024-06-28 00:06:31,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 251 transitions, 3009 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:31,709 INFO L231 Difference]: Finished difference. Result has 281 places, 233 transitions, 2489 flow [2024-06-28 00:06:31,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2489, PETRI_PLACES=281, PETRI_TRANSITIONS=233} [2024-06-28 00:06:31,709 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 252 predicate places. [2024-06-28 00:06:31,709 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 233 transitions, 2489 flow [2024-06-28 00:06:31,710 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 00:06:31,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:31,710 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 00:06:31,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:06:31,710 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 00:06:31,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:31,710 INFO L85 PathProgramCache]: Analyzing trace with hash -725370672, now seen corresponding path program 10 times [2024-06-28 00:06:31,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:31,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830095406] [2024-06-28 00:06:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:31,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:33,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:33,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830095406] [2024-06-28 00:06:33,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830095406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:33,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:33,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:33,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789381444] [2024-06-28 00:06:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:33,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:33,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:33,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 233 transitions, 2489 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 00:06:33,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:33,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:33,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:33,990 INFO L124 PetriNetUnfolderBase]: 656/1213 cut-off events. [2024-06-28 00:06:33,990 INFO L125 PetriNetUnfolderBase]: For 146729/146729 co-relation queries the response was YES. [2024-06-28 00:06:33,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8528 conditions, 1213 events. 656/1213 cut-off events. For 146729/146729 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6569 event pairs, 169 based on Foata normal form. 8/1220 useless extension candidates. Maximal degree in co-relation 8400. Up to 1011 conditions per place. [2024-06-28 00:06:34,000 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 195 selfloop transitions, 40 changer transitions 14/251 dead transitions. [2024-06-28 00:06:34,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 251 transitions, 3059 flow [2024-06-28 00:06:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:34,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:06:34,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 00:06:34,001 INFO L175 Difference]: Start difference. First operand has 281 places, 233 transitions, 2489 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:06:34,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 251 transitions, 3059 flow [2024-06-28 00:06:34,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 251 transitions, 2991 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:34,277 INFO L231 Difference]: Finished difference. Result has 280 places, 229 transitions, 2452 flow [2024-06-28 00:06:34,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2452, PETRI_PLACES=280, PETRI_TRANSITIONS=229} [2024-06-28 00:06:34,277 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 251 predicate places. [2024-06-28 00:06:34,277 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 229 transitions, 2452 flow [2024-06-28 00:06:34,277 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 00:06:34,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:34,277 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 00:06:34,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:06:34,278 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 00:06:34,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:34,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1599705998, now seen corresponding path program 11 times [2024-06-28 00:06:34,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:34,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016355803] [2024-06-28 00:06:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:34,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:35,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:35,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016355803] [2024-06-28 00:06:35,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016355803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:35,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:35,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:35,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796900452] [2024-06-28 00:06:35,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:35,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:35,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:35,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:36,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:36,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 229 transitions, 2452 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 00:06:36,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:36,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:36,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:36,568 INFO L124 PetriNetUnfolderBase]: 696/1297 cut-off events. [2024-06-28 00:06:36,568 INFO L125 PetriNetUnfolderBase]: For 217378/217378 co-relation queries the response was YES. [2024-06-28 00:06:36,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10398 conditions, 1297 events. 696/1297 cut-off events. For 217378/217378 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7111 event pairs, 198 based on Foata normal form. 8/1304 useless extension candidates. Maximal degree in co-relation 10270. Up to 717 conditions per place. [2024-06-28 00:06:36,580 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 163 selfloop transitions, 81 changer transitions 11/257 dead transitions. [2024-06-28 00:06:36,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 257 transitions, 3448 flow [2024-06-28 00:06:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 00:06:36,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-28 00:06:36,581 INFO L175 Difference]: Start difference. First operand has 280 places, 229 transitions, 2452 flow. Second operand 11 states and 139 transitions. [2024-06-28 00:06:36,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 257 transitions, 3448 flow [2024-06-28 00:06:36,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 257 transitions, 3317 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:36,946 INFO L231 Difference]: Finished difference. Result has 274 places, 226 transitions, 2456 flow [2024-06-28 00:06:36,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2456, PETRI_PLACES=274, PETRI_TRANSITIONS=226} [2024-06-28 00:06:36,947 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-06-28 00:06:36,947 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 226 transitions, 2456 flow [2024-06-28 00:06:36,947 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 00:06:36,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:36,947 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 00:06:36,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:06:36,947 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 00:06:36,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:36,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1599590678, now seen corresponding path program 12 times [2024-06-28 00:06:36,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:36,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114874974] [2024-06-28 00:06:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:36,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:38,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114874974] [2024-06-28 00:06:38,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114874974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:38,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:38,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:38,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960646697] [2024-06-28 00:06:38,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:38,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:38,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:38,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:38,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:38,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:38,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 226 transitions, 2456 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 00:06:38,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:38,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:38,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:39,236 INFO L124 PetriNetUnfolderBase]: 711/1328 cut-off events. [2024-06-28 00:06:39,236 INFO L125 PetriNetUnfolderBase]: For 256676/256676 co-relation queries the response was YES. [2024-06-28 00:06:39,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11398 conditions, 1328 events. 711/1328 cut-off events. For 256676/256676 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7392 event pairs, 237 based on Foata normal form. 8/1335 useless extension candidates. Maximal degree in co-relation 11271. Up to 1093 conditions per place. [2024-06-28 00:06:39,249 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 191 selfloop transitions, 50 changer transitions 7/250 dead transitions. [2024-06-28 00:06:39,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 250 transitions, 3244 flow [2024-06-28 00:06:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:06:39,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:06:39,250 INFO L175 Difference]: Start difference. First operand has 274 places, 226 transitions, 2456 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:06:39,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 250 transitions, 3244 flow [2024-06-28 00:06:39,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 250 transitions, 3105 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:39,741 INFO L231 Difference]: Finished difference. Result has 271 places, 224 transitions, 2400 flow [2024-06-28 00:06:39,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2400, PETRI_PLACES=271, PETRI_TRANSITIONS=224} [2024-06-28 00:06:39,742 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 242 predicate places. [2024-06-28 00:06:39,742 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 224 transitions, 2400 flow [2024-06-28 00:06:39,742 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 00:06:39,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:39,742 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 00:06:39,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:06:39,742 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 00:06:39,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash 88836846, now seen corresponding path program 13 times [2024-06-28 00:06:39,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:39,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491975307] [2024-06-28 00:06:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:39,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:41,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:41,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491975307] [2024-06-28 00:06:41,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491975307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:41,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:41,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:41,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062279862] [2024-06-28 00:06:41,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:41,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:41,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:41,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:41,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:41,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:41,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 224 transitions, 2400 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 00:06:41,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:41,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:41,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:42,047 INFO L124 PetriNetUnfolderBase]: 680/1267 cut-off events. [2024-06-28 00:06:42,047 INFO L125 PetriNetUnfolderBase]: For 225370/225370 co-relation queries the response was YES. [2024-06-28 00:06:42,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10275 conditions, 1267 events. 680/1267 cut-off events. For 225370/225370 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6933 event pairs, 206 based on Foata normal form. 10/1276 useless extension candidates. Maximal degree in co-relation 10149. Up to 953 conditions per place. [2024-06-28 00:06:42,057 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 153 selfloop transitions, 78 changer transitions 13/246 dead transitions. [2024-06-28 00:06:42,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 246 transitions, 3168 flow [2024-06-28 00:06:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:42,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:06:42,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2024-06-28 00:06:42,058 INFO L175 Difference]: Start difference. First operand has 271 places, 224 transitions, 2400 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:06:42,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 246 transitions, 3168 flow [2024-06-28 00:06:42,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 246 transitions, 3086 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:42,445 INFO L231 Difference]: Finished difference. Result has 272 places, 220 transitions, 2432 flow [2024-06-28 00:06:42,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2432, PETRI_PLACES=272, PETRI_TRANSITIONS=220} [2024-06-28 00:06:42,446 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2024-06-28 00:06:42,446 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 220 transitions, 2432 flow [2024-06-28 00:06:42,446 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 00:06:42,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:42,446 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 00:06:42,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:06:42,446 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 00:06:42,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:42,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1594944398, now seen corresponding path program 14 times [2024-06-28 00:06:42,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:42,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736780486] [2024-06-28 00:06:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:44,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:44,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736780486] [2024-06-28 00:06:44,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736780486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:44,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:44,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445510133] [2024-06-28 00:06:44,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:44,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:44,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 220 transitions, 2432 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 00:06:44,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:44,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:44,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:44,721 INFO L124 PetriNetUnfolderBase]: 671/1252 cut-off events. [2024-06-28 00:06:44,721 INFO L125 PetriNetUnfolderBase]: For 225500/225500 co-relation queries the response was YES. [2024-06-28 00:06:44,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10282 conditions, 1252 events. 671/1252 cut-off events. For 225500/225500 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6883 event pairs, 208 based on Foata normal form. 10/1261 useless extension candidates. Maximal degree in co-relation 10156. Up to 1049 conditions per place. [2024-06-28 00:06:44,732 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 179 selfloop transitions, 48 changer transitions 11/240 dead transitions. [2024-06-28 00:06:44,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 240 transitions, 3004 flow [2024-06-28 00:06:44,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:44,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:06:44,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-28 00:06:44,734 INFO L175 Difference]: Start difference. First operand has 272 places, 220 transitions, 2432 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:06:44,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 240 transitions, 3004 flow [2024-06-28 00:06:45,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 240 transitions, 2770 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:45,132 INFO L231 Difference]: Finished difference. Result has 269 places, 217 transitions, 2260 flow [2024-06-28 00:06:45,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2198, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2260, PETRI_PLACES=269, PETRI_TRANSITIONS=217} [2024-06-28 00:06:45,132 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2024-06-28 00:06:45,132 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 217 transitions, 2260 flow [2024-06-28 00:06:45,132 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 00:06:45,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:45,133 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 00:06:45,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:06:45,133 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 00:06:45,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1595122028, now seen corresponding path program 15 times [2024-06-28 00:06:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96948894] [2024-06-28 00:06:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:45,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:46,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:46,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96948894] [2024-06-28 00:06:46,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96948894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:46,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:46,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:46,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797619741] [2024-06-28 00:06:46,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:46,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:46,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:46,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:46,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:46,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:46,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 217 transitions, 2260 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 00:06:46,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:46,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:46,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:47,238 INFO L124 PetriNetUnfolderBase]: 686/1289 cut-off events. [2024-06-28 00:06:47,238 INFO L125 PetriNetUnfolderBase]: For 256407/256407 co-relation queries the response was YES. [2024-06-28 00:06:47,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 1289 events. 686/1289 cut-off events. For 256407/256407 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7166 event pairs, 218 based on Foata normal form. 8/1296 useless extension candidates. Maximal degree in co-relation 10947. Up to 1015 conditions per place. [2024-06-28 00:06:47,251 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 179 selfloop transitions, 54 changer transitions 7/242 dead transitions. [2024-06-28 00:06:47,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 242 transitions, 3044 flow [2024-06-28 00:06:47,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:47,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:06:47,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-28 00:06:47,252 INFO L175 Difference]: Start difference. First operand has 269 places, 217 transitions, 2260 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:06:47,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 242 transitions, 3044 flow [2024-06-28 00:06:47,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 242 transitions, 2932 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:47,711 INFO L231 Difference]: Finished difference. Result has 267 places, 215 transitions, 2239 flow [2024-06-28 00:06:47,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2239, PETRI_PLACES=267, PETRI_TRANSITIONS=215} [2024-06-28 00:06:47,711 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 238 predicate places. [2024-06-28 00:06:47,711 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 215 transitions, 2239 flow [2024-06-28 00:06:47,711 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 00:06:47,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:47,712 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 00:06:47,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:06:47,712 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 00:06:47,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:47,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1428710618, now seen corresponding path program 16 times [2024-06-28 00:06:47,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:47,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636414851] [2024-06-28 00:06:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:47,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:49,442 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 00:06:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636414851] [2024-06-28 00:06:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636414851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:49,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:49,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:49,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252586684] [2024-06-28 00:06:49,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:49,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:49,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:49,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:49,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:49,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:49,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 215 transitions, 2239 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:49,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:49,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:49,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:50,164 INFO L124 PetriNetUnfolderBase]: 684/1287 cut-off events. [2024-06-28 00:06:50,164 INFO L125 PetriNetUnfolderBase]: For 258342/258342 co-relation queries the response was YES. [2024-06-28 00:06:50,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10995 conditions, 1287 events. 684/1287 cut-off events. For 258342/258342 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7167 event pairs, 225 based on Foata normal form. 10/1296 useless extension candidates. Maximal degree in co-relation 10870. Up to 1084 conditions per place. [2024-06-28 00:06:50,176 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 183 selfloop transitions, 40 changer transitions 11/236 dead transitions. [2024-06-28 00:06:50,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 236 transitions, 2809 flow [2024-06-28 00:06:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:06:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:06:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:06:50,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 00:06:50,177 INFO L175 Difference]: Start difference. First operand has 267 places, 215 transitions, 2239 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:06:50,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 236 transitions, 2809 flow [2024-06-28 00:06:50,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 236 transitions, 2699 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:50,670 INFO L231 Difference]: Finished difference. Result has 268 places, 212 transitions, 2175 flow [2024-06-28 00:06:50,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2175, PETRI_PLACES=268, PETRI_TRANSITIONS=212} [2024-06-28 00:06:50,670 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-28 00:06:50,670 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 212 transitions, 2175 flow [2024-06-28 00:06:50,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:50,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:50,671 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 00:06:50,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:06:50,671 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 00:06:50,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash 694449080, now seen corresponding path program 17 times [2024-06-28 00:06:50,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:50,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785536707] [2024-06-28 00:06:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:50,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:52,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:52,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785536707] [2024-06-28 00:06:52,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785536707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:52,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:52,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:52,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474709114] [2024-06-28 00:06:52,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:52,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:52,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:52,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:52,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:52,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 212 transitions, 2175 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:52,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:52,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:52,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:52,798 INFO L124 PetriNetUnfolderBase]: 699/1324 cut-off events. [2024-06-28 00:06:52,798 INFO L125 PetriNetUnfolderBase]: For 289144/289144 co-relation queries the response was YES. [2024-06-28 00:06:52,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11912 conditions, 1324 events. 699/1324 cut-off events. For 289144/289144 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7451 event pairs, 253 based on Foata normal form. 8/1331 useless extension candidates. Maximal degree in co-relation 11787. Up to 1130 conditions per place. [2024-06-28 00:06:52,810 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 190 selfloop transitions, 35 changer transitions 7/234 dead transitions. [2024-06-28 00:06:52,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 234 transitions, 2915 flow [2024-06-28 00:06:52,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:06:52,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-28 00:06:52,811 INFO L175 Difference]: Start difference. First operand has 268 places, 212 transitions, 2175 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:06:52,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 234 transitions, 2915 flow [2024-06-28 00:06:53,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 234 transitions, 2819 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 00:06:53,352 INFO L231 Difference]: Finished difference. Result has 265 places, 210 transitions, 2132 flow [2024-06-28 00:06:53,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2132, PETRI_PLACES=265, PETRI_TRANSITIONS=210} [2024-06-28 00:06:53,352 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2024-06-28 00:06:53,353 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 210 transitions, 2132 flow [2024-06-28 00:06:53,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:53,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:53,353 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 00:06:53,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:06:53,353 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 00:06:53,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash 528219950, now seen corresponding path program 18 times [2024-06-28 00:06:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:53,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621141807] [2024-06-28 00:06:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:54,933 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 00:06:54,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:54,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621141807] [2024-06-28 00:06:54,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621141807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:54,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:54,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:54,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008715621] [2024-06-28 00:06:54,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:54,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:54,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:54,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:54,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:55,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:55,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 210 transitions, 2132 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 00:06:55,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:55,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:55,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:55,452 INFO L124 PetriNetUnfolderBase]: 668/1263 cut-off events. [2024-06-28 00:06:55,452 INFO L125 PetriNetUnfolderBase]: For 252854/252854 co-relation queries the response was YES. [2024-06-28 00:06:55,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10724 conditions, 1263 events. 668/1263 cut-off events. For 252854/252854 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7035 event pairs, 221 based on Foata normal form. 10/1272 useless extension candidates. Maximal degree in co-relation 10600. Up to 1059 conditions per place. [2024-06-28 00:06:55,462 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 170 selfloop transitions, 45 changer transitions 13/230 dead transitions. [2024-06-28 00:06:55,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 230 transitions, 2684 flow [2024-06-28 00:06:55,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:06:55,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-28 00:06:55,462 INFO L175 Difference]: Start difference. First operand has 265 places, 210 transitions, 2132 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:06:55,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 230 transitions, 2684 flow [2024-06-28 00:06:55,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 230 transitions, 2595 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:55,893 INFO L231 Difference]: Finished difference. Result has 264 places, 206 transitions, 2084 flow [2024-06-28 00:06:55,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2084, PETRI_PLACES=264, PETRI_TRANSITIONS=206} [2024-06-28 00:06:55,894 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-28 00:06:55,894 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 206 transitions, 2084 flow [2024-06-28 00:06:55,894 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 00:06:55,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:55,894 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 00:06:55,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:06:55,894 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 00:06:55,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1015563468, now seen corresponding path program 1 times [2024-06-28 00:06:55,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:55,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717843693] [2024-06-28 00:06:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:57,450 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 00:06:57,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:57,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717843693] [2024-06-28 00:06:57,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717843693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:57,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:57,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:57,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401020973] [2024-06-28 00:06:57,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:57,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:57,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:06:57,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 206 transitions, 2084 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 00:06:57,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:57,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:06:57,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:57,976 INFO L124 PetriNetUnfolderBase]: 647/1220 cut-off events. [2024-06-28 00:06:57,976 INFO L125 PetriNetUnfolderBase]: For 222928/222928 co-relation queries the response was YES. [2024-06-28 00:06:57,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10522 conditions, 1220 events. 647/1220 cut-off events. For 222928/222928 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6709 event pairs, 217 based on Foata normal form. 2/1221 useless extension candidates. Maximal degree in co-relation 10399. Up to 1061 conditions per place. [2024-06-28 00:06:57,987 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 172 selfloop transitions, 47 changer transitions 0/221 dead transitions. [2024-06-28 00:06:57,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 221 transitions, 2586 flow [2024-06-28 00:06:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:06:57,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-28 00:06:57,987 INFO L175 Difference]: Start difference. First operand has 264 places, 206 transitions, 2084 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:06:57,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 221 transitions, 2586 flow [2024-06-28 00:06:58,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 221 transitions, 2486 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:58,383 INFO L231 Difference]: Finished difference. Result has 260 places, 207 transitions, 2096 flow [2024-06-28 00:06:58,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2096, PETRI_PLACES=260, PETRI_TRANSITIONS=207} [2024-06-28 00:06:58,383 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-28 00:06:58,383 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 207 transitions, 2096 flow [2024-06-28 00:06:58,383 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 00:06:58,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:58,383 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 00:06:58,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:06:58,384 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 00:06:58,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:58,384 INFO L85 PathProgramCache]: Analyzing trace with hash 694633654, now seen corresponding path program 2 times [2024-06-28 00:06:58,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:58,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756304211] [2024-06-28 00:06:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:58,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:00,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:00,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756304211] [2024-06-28 00:07:00,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756304211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:00,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:00,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:00,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641596278] [2024-06-28 00:07:00,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:00,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:00,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:00,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:00,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:00,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 207 transitions, 2096 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:00,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:00,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:00,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:00,769 INFO L124 PetriNetUnfolderBase]: 651/1228 cut-off events. [2024-06-28 00:07:00,770 INFO L125 PetriNetUnfolderBase]: For 223022/223022 co-relation queries the response was YES. [2024-06-28 00:07:00,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10568 conditions, 1228 events. 651/1228 cut-off events. For 223022/223022 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6769 event pairs, 221 based on Foata normal form. 2/1229 useless extension candidates. Maximal degree in co-relation 10445. Up to 1069 conditions per place. [2024-06-28 00:07:00,781 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 181 selfloop transitions, 40 changer transitions 0/223 dead transitions. [2024-06-28 00:07:00,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 223 transitions, 2610 flow [2024-06-28 00:07:00,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:00,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:00,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:07:00,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-28 00:07:00,782 INFO L175 Difference]: Start difference. First operand has 260 places, 207 transitions, 2096 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:07:00,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 223 transitions, 2610 flow [2024-06-28 00:07:01,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 223 transitions, 2508 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:01,187 INFO L231 Difference]: Finished difference. Result has 263 places, 208 transitions, 2094 flow [2024-06-28 00:07:01,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2094, PETRI_PLACES=263, PETRI_TRANSITIONS=208} [2024-06-28 00:07:01,187 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 234 predicate places. [2024-06-28 00:07:01,188 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 208 transitions, 2094 flow [2024-06-28 00:07:01,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:01,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:01,188 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 00:07:01,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:07:01,188 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 00:07:01,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:01,189 INFO L85 PathProgramCache]: Analyzing trace with hash 694453730, now seen corresponding path program 19 times [2024-06-28 00:07:01,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:01,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798198578] [2024-06-28 00:07:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:01,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:02,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:02,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798198578] [2024-06-28 00:07:02,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798198578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:02,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:02,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:02,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133021874] [2024-06-28 00:07:02,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:02,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:02,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:02,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:02,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:02,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:02,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 208 transitions, 2094 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:02,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:02,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:02,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:03,485 INFO L124 PetriNetUnfolderBase]: 638/1205 cut-off events. [2024-06-28 00:07:03,485 INFO L125 PetriNetUnfolderBase]: For 220379/220379 co-relation queries the response was YES. [2024-06-28 00:07:03,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9649 conditions, 1205 events. 638/1205 cut-off events. For 220379/220379 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6611 event pairs, 206 based on Foata normal form. 10/1214 useless extension candidates. Maximal degree in co-relation 9525. Up to 993 conditions per place. [2024-06-28 00:07:03,495 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 176 selfloop transitions, 39 changer transitions 12/229 dead transitions. [2024-06-28 00:07:03,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 229 transitions, 2650 flow [2024-06-28 00:07:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:03,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 00:07:03,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2024-06-28 00:07:03,496 INFO L175 Difference]: Start difference. First operand has 263 places, 208 transitions, 2094 flow. Second operand 12 states and 139 transitions. [2024-06-28 00:07:03,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 229 transitions, 2650 flow [2024-06-28 00:07:03,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 229 transitions, 2560 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:03,871 INFO L231 Difference]: Finished difference. Result has 266 places, 204 transitions, 2032 flow [2024-06-28 00:07:03,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2032, PETRI_PLACES=266, PETRI_TRANSITIONS=204} [2024-06-28 00:07:03,871 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-28 00:07:03,871 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 204 transitions, 2032 flow [2024-06-28 00:07:03,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:03,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:03,871 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 00:07:03,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 00:07:03,872 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 00:07:03,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 701120404, now seen corresponding path program 3 times [2024-06-28 00:07:03,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:03,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595526099] [2024-06-28 00:07:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:05,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:05,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595526099] [2024-06-28 00:07:05,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595526099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:05,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:05,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:05,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231680804] [2024-06-28 00:07:05,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:05,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:05,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:05,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:05,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:05,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:05,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 204 transitions, 2032 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 00:07:05,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:05,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:05,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:06,324 INFO L124 PetriNetUnfolderBase]: 617/1162 cut-off events. [2024-06-28 00:07:06,324 INFO L125 PetriNetUnfolderBase]: For 193937/193937 co-relation queries the response was YES. [2024-06-28 00:07:06,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9483 conditions, 1162 events. 617/1162 cut-off events. For 193937/193937 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6286 event pairs, 204 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 9358. Up to 1003 conditions per place. [2024-06-28 00:07:06,335 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 180 selfloop transitions, 40 changer transitions 0/222 dead transitions. [2024-06-28 00:07:06,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 222 transitions, 2550 flow [2024-06-28 00:07:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:07:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:07:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 139 transitions. [2024-06-28 00:07:06,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3564102564102564 [2024-06-28 00:07:06,336 INFO L175 Difference]: Start difference. First operand has 266 places, 204 transitions, 2032 flow. Second operand 13 states and 139 transitions. [2024-06-28 00:07:06,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 222 transitions, 2550 flow [2024-06-28 00:07:06,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 222 transitions, 2462 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:06,748 INFO L231 Difference]: Finished difference. Result has 264 places, 205 transitions, 2046 flow [2024-06-28 00:07:06,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2046, PETRI_PLACES=264, PETRI_TRANSITIONS=205} [2024-06-28 00:07:06,748 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-28 00:07:06,749 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 205 transitions, 2046 flow [2024-06-28 00:07:06,749 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 00:07:06,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:06,749 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 00:07:06,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 00:07:06,749 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 00:07:06,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:06,750 INFO L85 PathProgramCache]: Analyzing trace with hash 701128774, now seen corresponding path program 4 times [2024-06-28 00:07:06,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:06,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056222140] [2024-06-28 00:07:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:06,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:08,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:08,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056222140] [2024-06-28 00:07:08,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056222140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:08,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:08,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:08,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807671331] [2024-06-28 00:07:08,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:08,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:08,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:08,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:08,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:08,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:08,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 205 transitions, 2046 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 00:07:08,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:08,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:08,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:09,354 INFO L124 PetriNetUnfolderBase]: 621/1170 cut-off events. [2024-06-28 00:07:09,354 INFO L125 PetriNetUnfolderBase]: For 194172/194172 co-relation queries the response was YES. [2024-06-28 00:07:09,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9535 conditions, 1170 events. 621/1170 cut-off events. For 194172/194172 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6371 event pairs, 200 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 9410. Up to 985 conditions per place. [2024-06-28 00:07:09,367 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 177 selfloop transitions, 44 changer transitions 0/223 dead transitions. [2024-06-28 00:07:09,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 223 transitions, 2562 flow [2024-06-28 00:07:09,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:07:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:07:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-28 00:07:09,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-06-28 00:07:09,368 INFO L175 Difference]: Start difference. First operand has 264 places, 205 transitions, 2046 flow. Second operand 13 states and 140 transitions. [2024-06-28 00:07:09,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 223 transitions, 2562 flow [2024-06-28 00:07:09,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 223 transitions, 2470 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:09,787 INFO L231 Difference]: Finished difference. Result has 266 places, 206 transitions, 2066 flow [2024-06-28 00:07:09,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2066, PETRI_PLACES=266, PETRI_TRANSITIONS=206} [2024-06-28 00:07:09,787 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-28 00:07:09,787 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 206 transitions, 2066 flow [2024-06-28 00:07:09,787 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 00:07:09,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:09,787 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 00:07:09,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 00:07:09,787 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 00:07:09,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:09,788 INFO L85 PathProgramCache]: Analyzing trace with hash 700882820, now seen corresponding path program 20 times [2024-06-28 00:07:09,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:09,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600214024] [2024-06-28 00:07:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:09,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:11,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600214024] [2024-06-28 00:07:11,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600214024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:11,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:11,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777880543] [2024-06-28 00:07:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:11,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:11,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:11,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:11,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:11,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:11,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 206 transitions, 2066 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:11,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:11,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:11,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:12,669 INFO L124 PetriNetUnfolderBase]: 637/1206 cut-off events. [2024-06-28 00:07:12,669 INFO L125 PetriNetUnfolderBase]: For 230490/230490 co-relation queries the response was YES. [2024-06-28 00:07:12,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9707 conditions, 1206 events. 637/1206 cut-off events. For 230490/230490 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6624 event pairs, 208 based on Foata normal form. 10/1215 useless extension candidates. Maximal degree in co-relation 9581. Up to 1003 conditions per place. [2024-06-28 00:07:12,683 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 178 selfloop transitions, 38 changer transitions 11/229 dead transitions. [2024-06-28 00:07:12,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 229 transitions, 2626 flow [2024-06-28 00:07:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:07:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:07:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 152 transitions. [2024-06-28 00:07:12,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-06-28 00:07:12,684 INFO L175 Difference]: Start difference. First operand has 266 places, 206 transitions, 2066 flow. Second operand 14 states and 152 transitions. [2024-06-28 00:07:12,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 229 transitions, 2626 flow [2024-06-28 00:07:13,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 229 transitions, 2524 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:13,378 INFO L231 Difference]: Finished difference. Result has 269 places, 203 transitions, 2006 flow [2024-06-28 00:07:13,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2006, PETRI_PLACES=269, PETRI_TRANSITIONS=203} [2024-06-28 00:07:13,378 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2024-06-28 00:07:13,379 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 203 transitions, 2006 flow [2024-06-28 00:07:13,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:13,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:13,379 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 00:07:13,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 00:07:13,379 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 00:07:13,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash 146497252, now seen corresponding path program 5 times [2024-06-28 00:07:13,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:13,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686824722] [2024-06-28 00:07:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:13,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:15,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:15,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686824722] [2024-06-28 00:07:15,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686824722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:15,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:15,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:15,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868161422] [2024-06-28 00:07:15,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:15,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:15,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:15,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:15,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:15,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:15,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 203 transitions, 2006 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 00:07:15,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:15,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:15,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:16,118 INFO L124 PetriNetUnfolderBase]: 615/1164 cut-off events. [2024-06-28 00:07:16,119 INFO L125 PetriNetUnfolderBase]: For 203081/203081 co-relation queries the response was YES. [2024-06-28 00:07:16,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9533 conditions, 1164 events. 615/1164 cut-off events. For 203081/203081 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6326 event pairs, 211 based on Foata normal form. 2/1165 useless extension candidates. Maximal degree in co-relation 9406. Up to 1095 conditions per place. [2024-06-28 00:07:16,133 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 189 selfloop transitions, 29 changer transitions 0/220 dead transitions. [2024-06-28 00:07:16,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 220 transitions, 2520 flow [2024-06-28 00:07:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:07:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:07:16,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-28 00:07:16,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35128205128205126 [2024-06-28 00:07:16,134 INFO L175 Difference]: Start difference. First operand has 269 places, 203 transitions, 2006 flow. Second operand 13 states and 137 transitions. [2024-06-28 00:07:16,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 220 transitions, 2520 flow [2024-06-28 00:07:16,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 220 transitions, 2432 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 00:07:16,715 INFO L231 Difference]: Finished difference. Result has 266 places, 204 transitions, 2002 flow [2024-06-28 00:07:16,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2002, PETRI_PLACES=266, PETRI_TRANSITIONS=204} [2024-06-28 00:07:16,716 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-28 00:07:16,716 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 204 transitions, 2002 flow [2024-06-28 00:07:16,716 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 00:07:16,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:16,716 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 00:07:16,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 00:07:16,716 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 00:07:16,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:16,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1334759354, now seen corresponding path program 6 times [2024-06-28 00:07:16,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:16,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888448110] [2024-06-28 00:07:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:16,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:18,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:18,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888448110] [2024-06-28 00:07:18,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888448110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:18,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:18,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994030427] [2024-06-28 00:07:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:18,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:18,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:18,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 204 transitions, 2002 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:18,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:18,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:18,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:19,659 INFO L124 PetriNetUnfolderBase]: 626/1185 cut-off events. [2024-06-28 00:07:19,660 INFO L125 PetriNetUnfolderBase]: For 206862/206862 co-relation queries the response was YES. [2024-06-28 00:07:19,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 1185 events. 626/1185 cut-off events. For 206862/206862 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6494 event pairs, 210 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 9652. Up to 1093 conditions per place. [2024-06-28 00:07:19,675 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 189 selfloop transitions, 32 changer transitions 0/223 dead transitions. [2024-06-28 00:07:19,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 223 transitions, 2722 flow [2024-06-28 00:07:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:07:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:07:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 138 transitions. [2024-06-28 00:07:19,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35384615384615387 [2024-06-28 00:07:19,676 INFO L175 Difference]: Start difference. First operand has 266 places, 204 transitions, 2002 flow. Second operand 13 states and 138 transitions. [2024-06-28 00:07:19,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 223 transitions, 2722 flow [2024-06-28 00:07:20,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 223 transitions, 2648 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:20,168 INFO L231 Difference]: Finished difference. Result has 268 places, 206 transitions, 2042 flow [2024-06-28 00:07:20,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2042, PETRI_PLACES=268, PETRI_TRANSITIONS=206} [2024-06-28 00:07:20,169 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-28 00:07:20,169 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 206 transitions, 2042 flow [2024-06-28 00:07:20,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:20,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:20,169 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 00:07:20,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 00:07:20,169 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 00:07:20,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:20,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1045044318, now seen corresponding path program 7 times [2024-06-28 00:07:20,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:20,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247231836] [2024-06-28 00:07:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:20,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:21,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:21,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247231836] [2024-06-28 00:07:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247231836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:21,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:21,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:21,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319732489] [2024-06-28 00:07:21,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:21,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:21,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:21,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:22,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:22,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 206 transitions, 2042 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 00:07:22,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:22,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:22,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:22,600 INFO L124 PetriNetUnfolderBase]: 630/1193 cut-off events. [2024-06-28 00:07:22,600 INFO L125 PetriNetUnfolderBase]: For 211881/211881 co-relation queries the response was YES. [2024-06-28 00:07:22,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9878 conditions, 1193 events. 630/1193 cut-off events. For 211881/211881 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6561 event pairs, 214 based on Foata normal form. 2/1194 useless extension candidates. Maximal degree in co-relation 9751. Up to 1128 conditions per place. [2024-06-28 00:07:22,613 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 191 selfloop transitions, 27 changer transitions 0/220 dead transitions. [2024-06-28 00:07:22,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 220 transitions, 2548 flow [2024-06-28 00:07:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:07:22,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-28 00:07:22,614 INFO L175 Difference]: Start difference. First operand has 268 places, 206 transitions, 2042 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:07:22,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 220 transitions, 2548 flow [2024-06-28 00:07:23,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 220 transitions, 2485 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:23,280 INFO L231 Difference]: Finished difference. Result has 269 places, 207 transitions, 2063 flow [2024-06-28 00:07:23,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=269, PETRI_TRANSITIONS=207} [2024-06-28 00:07:23,280 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2024-06-28 00:07:23,280 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 207 transitions, 2063 flow [2024-06-28 00:07:23,280 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 00:07:23,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:23,280 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 00:07:23,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 00:07:23,281 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 00:07:23,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:23,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1335005308, now seen corresponding path program 21 times [2024-06-28 00:07:23,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:23,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239753615] [2024-06-28 00:07:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:23,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:25,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239753615] [2024-06-28 00:07:25,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239753615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:25,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:25,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:25,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035390105] [2024-06-28 00:07:25,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:25,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:25,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:25,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:25,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 207 transitions, 2063 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:25,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:25,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:25,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:26,658 INFO L124 PetriNetUnfolderBase]: 646/1229 cut-off events. [2024-06-28 00:07:26,658 INFO L125 PetriNetUnfolderBase]: For 249833/249833 co-relation queries the response was YES. [2024-06-28 00:07:26,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10048 conditions, 1229 events. 646/1229 cut-off events. For 249833/249833 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6846 event pairs, 216 based on Foata normal form. 10/1238 useless extension candidates. Maximal degree in co-relation 9919. Up to 1116 conditions per place. [2024-06-28 00:07:26,668 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 189 selfloop transitions, 27 changer transitions 11/229 dead transitions. [2024-06-28 00:07:26,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 229 transitions, 2619 flow [2024-06-28 00:07:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:07:26,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:07:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 150 transitions. [2024-06-28 00:07:26,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 00:07:26,668 INFO L175 Difference]: Start difference. First operand has 269 places, 207 transitions, 2063 flow. Second operand 14 states and 150 transitions. [2024-06-28 00:07:26,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 229 transitions, 2619 flow [2024-06-28 00:07:27,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 229 transitions, 2545 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:27,253 INFO L231 Difference]: Finished difference. Result has 275 places, 204 transitions, 2014 flow [2024-06-28 00:07:27,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2014, PETRI_PLACES=275, PETRI_TRANSITIONS=204} [2024-06-28 00:07:27,254 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 246 predicate places. [2024-06-28 00:07:27,254 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 204 transitions, 2014 flow [2024-06-28 00:07:27,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:27,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:27,254 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 00:07:27,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 00:07:27,254 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 00:07:27,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:27,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1341261418, now seen corresponding path program 22 times [2024-06-28 00:07:27,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:27,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734043792] [2024-06-28 00:07:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:27,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:29,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734043792] [2024-06-28 00:07:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734043792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:29,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:29,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597366395] [2024-06-28 00:07:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:29,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:29,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:29,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:29,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 204 transitions, 2014 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:29,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:29,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:29,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:29,829 INFO L124 PetriNetUnfolderBase]: 636/1215 cut-off events. [2024-06-28 00:07:29,829 INFO L125 PetriNetUnfolderBase]: For 254958/254958 co-relation queries the response was YES. [2024-06-28 00:07:29,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 1215 events. 636/1215 cut-off events. For 254958/254958 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6770 event pairs, 216 based on Foata normal form. 10/1224 useless extension candidates. Maximal degree in co-relation 9832. Up to 1102 conditions per place. [2024-06-28 00:07:29,844 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 186 selfloop transitions, 25 changer transitions 11/224 dead transitions. [2024-06-28 00:07:29,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 224 transitions, 2556 flow [2024-06-28 00:07:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 00:07:29,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-28 00:07:29,845 INFO L175 Difference]: Start difference. First operand has 275 places, 204 transitions, 2014 flow. Second operand 12 states and 134 transitions. [2024-06-28 00:07:29,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 224 transitions, 2556 flow [2024-06-28 00:07:30,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 224 transitions, 2494 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 00:07:30,497 INFO L231 Difference]: Finished difference. Result has 271 places, 201 transitions, 1973 flow [2024-06-28 00:07:30,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1973, PETRI_PLACES=271, PETRI_TRANSITIONS=201} [2024-06-28 00:07:30,498 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 242 predicate places. [2024-06-28 00:07:30,498 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 201 transitions, 1973 flow [2024-06-28 00:07:30,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:30,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:30,498 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 00:07:30,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 00:07:30,498 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 00:07:30,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1695889878, now seen corresponding path program 8 times [2024-06-28 00:07:30,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:30,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146989015] [2024-06-28 00:07:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:30,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:32,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:32,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146989015] [2024-06-28 00:07:32,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146989015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:32,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:32,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:32,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094548519] [2024-06-28 00:07:32,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:32,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:32,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:32,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:32,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:32,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:32,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 201 transitions, 1973 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:32,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:32,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:32,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:32,897 INFO L124 PetriNetUnfolderBase]: 607/1160 cut-off events. [2024-06-28 00:07:32,898 INFO L125 PetriNetUnfolderBase]: For 207541/207541 co-relation queries the response was YES. [2024-06-28 00:07:32,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9472 conditions, 1160 events. 607/1160 cut-off events. For 207541/207541 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6383 event pairs, 215 based on Foata normal form. 2/1161 useless extension candidates. Maximal degree in co-relation 9343. Up to 1114 conditions per place. [2024-06-28 00:07:32,910 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 188 selfloop transitions, 22 changer transitions 0/212 dead transitions. [2024-06-28 00:07:32,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 212 transitions, 2423 flow [2024-06-28 00:07:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 00:07:32,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-28 00:07:32,911 INFO L175 Difference]: Start difference. First operand has 271 places, 201 transitions, 1973 flow. Second operand 11 states and 115 transitions. [2024-06-28 00:07:32,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 212 transitions, 2423 flow [2024-06-28 00:07:33,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 212 transitions, 2355 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:33,489 INFO L231 Difference]: Finished difference. Result has 268 places, 201 transitions, 1953 flow [2024-06-28 00:07:33,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1953, PETRI_PLACES=268, PETRI_TRANSITIONS=201} [2024-06-28 00:07:33,489 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-28 00:07:33,490 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 201 transitions, 1953 flow [2024-06-28 00:07:33,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:33,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:33,490 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 00:07:33,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 00:07:33,490 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 00:07:33,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:33,491 INFO L85 PathProgramCache]: Analyzing trace with hash -672290020, now seen corresponding path program 23 times [2024-06-28 00:07:33,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:33,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888398403] [2024-06-28 00:07:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:33,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:35,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:35,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888398403] [2024-06-28 00:07:35,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888398403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:35,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:35,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:35,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754219081] [2024-06-28 00:07:35,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:35,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:35,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:35,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:35,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:35,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:35,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 201 transitions, 1953 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:35,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:35,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:35,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:36,127 INFO L124 PetriNetUnfolderBase]: 623/1196 cut-off events. [2024-06-28 00:07:36,127 INFO L125 PetriNetUnfolderBase]: For 235452/235452 co-relation queries the response was YES. [2024-06-28 00:07:36,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9516 conditions, 1196 events. 623/1196 cut-off events. For 235452/235452 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6666 event pairs, 215 based on Foata normal form. 10/1205 useless extension candidates. Maximal degree in co-relation 9388. Up to 1076 conditions per place. [2024-06-28 00:07:36,144 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 179 selfloop transitions, 28 changer transitions 11/220 dead transitions. [2024-06-28 00:07:36,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 220 transitions, 2479 flow [2024-06-28 00:07:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 00:07:36,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-28 00:07:36,145 INFO L175 Difference]: Start difference. First operand has 268 places, 201 transitions, 1953 flow. Second operand 12 states and 134 transitions. [2024-06-28 00:07:36,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 220 transitions, 2479 flow [2024-06-28 00:07:36,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 220 transitions, 2429 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:36,946 INFO L231 Difference]: Finished difference. Result has 270 places, 198 transitions, 1930 flow [2024-06-28 00:07:36,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1930, PETRI_PLACES=270, PETRI_TRANSITIONS=198} [2024-06-28 00:07:36,946 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-28 00:07:36,947 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 198 transitions, 1930 flow [2024-06-28 00:07:36,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:36,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:36,947 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 00:07:36,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 00:07:36,947 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 00:07:36,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:36,948 INFO L85 PathProgramCache]: Analyzing trace with hash -672294670, now seen corresponding path program 24 times [2024-06-28 00:07:36,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:36,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055664172] [2024-06-28 00:07:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:36,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:38,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:38,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055664172] [2024-06-28 00:07:38,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055664172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:38,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:38,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:38,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618005383] [2024-06-28 00:07:38,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:38,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:38,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:38,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:38,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:38,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:38,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 198 transitions, 1930 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:38,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:38,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:38,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:39,501 INFO L124 PetriNetUnfolderBase]: 611/1176 cut-off events. [2024-06-28 00:07:39,501 INFO L125 PetriNetUnfolderBase]: For 231939/231939 co-relation queries the response was YES. [2024-06-28 00:07:39,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9462 conditions, 1176 events. 611/1176 cut-off events. For 231939/231939 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6541 event pairs, 211 based on Foata normal form. 8/1183 useless extension candidates. Maximal degree in co-relation 9333. Up to 1066 conditions per place. [2024-06-28 00:07:39,516 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 177 selfloop transitions, 26 changer transitions 11/216 dead transitions. [2024-06-28 00:07:39,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 216 transitions, 2434 flow [2024-06-28 00:07:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 00:07:39,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638888888888889 [2024-06-28 00:07:39,517 INFO L175 Difference]: Start difference. First operand has 270 places, 198 transitions, 1930 flow. Second operand 12 states and 131 transitions. [2024-06-28 00:07:39,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 216 transitions, 2434 flow [2024-06-28 00:07:40,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 216 transitions, 2374 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:40,306 INFO L231 Difference]: Finished difference. Result has 268 places, 195 transitions, 1889 flow [2024-06-28 00:07:40,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1889, PETRI_PLACES=268, PETRI_TRANSITIONS=195} [2024-06-28 00:07:40,306 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-28 00:07:40,306 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 195 transitions, 1889 flow [2024-06-28 00:07:40,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:40,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:40,306 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 00:07:40,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 00:07:40,306 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 00:07:40,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:40,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1045037374, now seen corresponding path program 25 times [2024-06-28 00:07:40,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:40,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103026819] [2024-06-28 00:07:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:40,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:41,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:41,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103026819] [2024-06-28 00:07:41,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103026819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:41,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:41,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:41,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882398941] [2024-06-28 00:07:41,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:41,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:41,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:41,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:41,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:42,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:42,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 195 transitions, 1889 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:42,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:42,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:42,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:42,760 INFO L124 PetriNetUnfolderBase]: 608/1171 cut-off events. [2024-06-28 00:07:42,760 INFO L125 PetriNetUnfolderBase]: For 235446/235446 co-relation queries the response was YES. [2024-06-28 00:07:42,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9372 conditions, 1171 events. 608/1171 cut-off events. For 235446/235446 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6515 event pairs, 213 based on Foata normal form. 10/1180 useless extension candidates. Maximal degree in co-relation 9244. Up to 1062 conditions per place. [2024-06-28 00:07:42,775 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 176 selfloop transitions, 25 changer transitions 11/214 dead transitions. [2024-06-28 00:07:42,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 214 transitions, 2403 flow [2024-06-28 00:07:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 00:07:42,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 00:07:42,776 INFO L175 Difference]: Start difference. First operand has 268 places, 195 transitions, 1889 flow. Second operand 12 states and 130 transitions. [2024-06-28 00:07:42,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 214 transitions, 2403 flow [2024-06-28 00:07:43,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 214 transitions, 2345 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:43,535 INFO L231 Difference]: Finished difference. Result has 264 places, 192 transitions, 1850 flow [2024-06-28 00:07:43,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1850, PETRI_PLACES=264, PETRI_TRANSITIONS=192} [2024-06-28 00:07:43,536 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-28 00:07:43,536 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 192 transitions, 1850 flow [2024-06-28 00:07:43,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:43,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:43,536 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 00:07:43,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 00:07:43,536 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 00:07:43,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:43,536 INFO L85 PathProgramCache]: Analyzing trace with hash 21079962, now seen corresponding path program 26 times [2024-06-28 00:07:43,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:43,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102666369] [2024-06-28 00:07:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:43,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:45,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:45,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102666369] [2024-06-28 00:07:45,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102666369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:45,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:45,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:45,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138530809] [2024-06-28 00:07:45,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:45,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:45,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:45,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:45,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:45,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:45,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 192 transitions, 1850 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:45,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:45,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:45,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:46,025 INFO L124 PetriNetUnfolderBase]: 594/1149 cut-off events. [2024-06-28 00:07:46,025 INFO L125 PetriNetUnfolderBase]: For 217275/217275 co-relation queries the response was YES. [2024-06-28 00:07:46,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9154 conditions, 1149 events. 594/1149 cut-off events. For 217275/217275 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6352 event pairs, 197 based on Foata normal form. 8/1156 useless extension candidates. Maximal degree in co-relation 9028. Up to 821 conditions per place. [2024-06-28 00:07:46,041 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 168 selfloop transitions, 39 changer transitions 7/216 dead transitions. [2024-06-28 00:07:46,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 216 transitions, 2748 flow [2024-06-28 00:07:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 00:07:46,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 00:07:46,042 INFO L175 Difference]: Start difference. First operand has 264 places, 192 transitions, 1850 flow. Second operand 11 states and 130 transitions. [2024-06-28 00:07:46,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 216 transitions, 2748 flow [2024-06-28 00:07:46,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 216 transitions, 2682 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:46,626 INFO L231 Difference]: Finished difference. Result has 261 places, 190 transitions, 1852 flow [2024-06-28 00:07:46,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1852, PETRI_PLACES=261, PETRI_TRANSITIONS=190} [2024-06-28 00:07:46,627 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 232 predicate places. [2024-06-28 00:07:46,627 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 190 transitions, 1852 flow [2024-06-28 00:07:46,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:46,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:46,627 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 00:07:46,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 00:07:46,627 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 00:07:46,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:46,627 INFO L85 PathProgramCache]: Analyzing trace with hash 553688638, now seen corresponding path program 27 times [2024-06-28 00:07:46,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:46,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403895010] [2024-06-28 00:07:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:48,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:48,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403895010] [2024-06-28 00:07:48,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403895010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:48,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:48,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:48,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689079352] [2024-06-28 00:07:48,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:48,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:48,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:48,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:48,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 190 transitions, 1852 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:48,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:48,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:48,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:49,125 INFO L124 PetriNetUnfolderBase]: 592/1147 cut-off events. [2024-06-28 00:07:49,125 INFO L125 PetriNetUnfolderBase]: For 220286/220286 co-relation queries the response was YES. [2024-06-28 00:07:49,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9120 conditions, 1147 events. 592/1147 cut-off events. For 220286/220286 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6385 event pairs, 215 based on Foata normal form. 10/1156 useless extension candidates. Maximal degree in co-relation 8995. Up to 1047 conditions per place. [2024-06-28 00:07:49,135 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 166 selfloop transitions, 27 changer transitions 12/207 dead transitions. [2024-06-28 00:07:49,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 207 transitions, 2336 flow [2024-06-28 00:07:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:07:49,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 00:07:49,136 INFO L175 Difference]: Start difference. First operand has 261 places, 190 transitions, 1852 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:07:49,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 207 transitions, 2336 flow [2024-06-28 00:07:49,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 207 transitions, 2264 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:49,618 INFO L231 Difference]: Finished difference. Result has 260 places, 186 transitions, 1784 flow [2024-06-28 00:07:49,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1784, PETRI_PLACES=260, PETRI_TRANSITIONS=186} [2024-06-28 00:07:49,618 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-28 00:07:49,618 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 186 transitions, 1784 flow [2024-06-28 00:07:49,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:49,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:49,619 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 00:07:49,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 00:07:49,619 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 00:07:49,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:49,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1365094670, now seen corresponding path program 9 times [2024-06-28 00:07:49,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:49,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478117329] [2024-06-28 00:07:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:49,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:51,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:51,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478117329] [2024-06-28 00:07:51,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478117329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:51,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:51,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:51,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672736734] [2024-06-28 00:07:51,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:51,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:51,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:51,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:51,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:51,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:51,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 186 transitions, 1784 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:51,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:51,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:51,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:51,879 INFO L124 PetriNetUnfolderBase]: 571/1104 cut-off events. [2024-06-28 00:07:51,879 INFO L125 PetriNetUnfolderBase]: For 185617/185617 co-relation queries the response was YES. [2024-06-28 00:07:51,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8898 conditions, 1104 events. 571/1104 cut-off events. For 185617/185617 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6075 event pairs, 211 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 8774. Up to 1039 conditions per place. [2024-06-28 00:07:51,890 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 174 selfloop transitions, 23 changer transitions 0/199 dead transitions. [2024-06-28 00:07:51,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 199 transitions, 2242 flow [2024-06-28 00:07:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:07:51,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-28 00:07:51,890 INFO L175 Difference]: Start difference. First operand has 260 places, 186 transitions, 1784 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:07:51,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 199 transitions, 2242 flow [2024-06-28 00:07:52,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 199 transitions, 2180 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:52,323 INFO L231 Difference]: Finished difference. Result has 256 places, 187 transitions, 1800 flow [2024-06-28 00:07:52,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1800, PETRI_PLACES=256, PETRI_TRANSITIONS=187} [2024-06-28 00:07:52,323 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-28 00:07:52,324 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 187 transitions, 1800 flow [2024-06-28 00:07:52,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:52,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:52,324 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 00:07:52,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 00:07:52,324 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 00:07:52,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1365332254, now seen corresponding path program 28 times [2024-06-28 00:07:52,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:52,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876955945] [2024-06-28 00:07:52,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:52,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:53,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876955945] [2024-06-28 00:07:53,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876955945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:53,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:53,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:53,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201264012] [2024-06-28 00:07:53,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:53,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:53,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:54,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:54,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 187 transitions, 1800 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:54,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:54,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:54,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:54,578 INFO L124 PetriNetUnfolderBase]: 580/1127 cut-off events. [2024-06-28 00:07:54,579 INFO L125 PetriNetUnfolderBase]: For 198110/198110 co-relation queries the response was YES. [2024-06-28 00:07:54,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8715 conditions, 1127 events. 580/1127 cut-off events. For 198110/198110 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6245 event pairs, 210 based on Foata normal form. 10/1136 useless extension candidates. Maximal degree in co-relation 8593. Up to 1018 conditions per place. [2024-06-28 00:07:54,588 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 171 selfloop transitions, 21 changer transitions 11/205 dead transitions. [2024-06-28 00:07:54,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 205 transitions, 2288 flow [2024-06-28 00:07:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 00:07:54,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 00:07:54,589 INFO L175 Difference]: Start difference. First operand has 256 places, 187 transitions, 1800 flow. Second operand 12 states and 130 transitions. [2024-06-28 00:07:54,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 205 transitions, 2288 flow [2024-06-28 00:07:54,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 205 transitions, 2220 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:54,979 INFO L231 Difference]: Finished difference. Result has 259 places, 184 transitions, 1740 flow [2024-06-28 00:07:54,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1740, PETRI_PLACES=259, PETRI_TRANSITIONS=184} [2024-06-28 00:07:54,979 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-28 00:07:54,980 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 184 transitions, 1740 flow [2024-06-28 00:07:54,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:54,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:54,980 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 00:07:54,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 00:07:54,980 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 00:07:54,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:54,980 INFO L85 PathProgramCache]: Analyzing trace with hash -695941922, now seen corresponding path program 10 times [2024-06-28 00:07:54,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:54,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613134309] [2024-06-28 00:07:54,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:54,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:56,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613134309] [2024-06-28 00:07:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613134309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:56,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:56,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:56,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809193538] [2024-06-28 00:07:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:56,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:56,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:56,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:56,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 184 transitions, 1740 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:56,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:56,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:56,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:57,112 INFO L124 PetriNetUnfolderBase]: 558/1085 cut-off events. [2024-06-28 00:07:57,112 INFO L125 PetriNetUnfolderBase]: For 173547/173547 co-relation queries the response was YES. [2024-06-28 00:07:57,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8553 conditions, 1085 events. 558/1085 cut-off events. For 173547/173547 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5954 event pairs, 206 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 8430. Up to 1000 conditions per place. [2024-06-28 00:07:57,148 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 171 selfloop transitions, 24 changer transitions 0/197 dead transitions. [2024-06-28 00:07:57,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 197 transitions, 2190 flow [2024-06-28 00:07:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:07:57,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-28 00:07:57,149 INFO L175 Difference]: Start difference. First operand has 259 places, 184 transitions, 1740 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:07:57,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 197 transitions, 2190 flow [2024-06-28 00:07:57,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 197 transitions, 2140 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:57,595 INFO L231 Difference]: Finished difference. Result has 256 places, 185 transitions, 1772 flow [2024-06-28 00:07:57,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1772, PETRI_PLACES=256, PETRI_TRANSITIONS=185} [2024-06-28 00:07:57,595 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-28 00:07:57,595 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 185 transitions, 1772 flow [2024-06-28 00:07:57,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:57,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:57,595 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 00:07:57,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 00:07:57,595 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 00:07:57,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:57,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2003744340, now seen corresponding path program 1 times [2024-06-28 00:07:57,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:57,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571299914] [2024-06-28 00:07:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:57,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:59,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:59,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571299914] [2024-06-28 00:07:59,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571299914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:59,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:59,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:59,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926208841] [2024-06-28 00:07:59,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:59,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:59,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:59,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:59,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:07:59,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 185 transitions, 1772 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:59,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:59,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:07:59,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:59,948 INFO L124 PetriNetUnfolderBase]: 556/1082 cut-off events. [2024-06-28 00:07:59,948 INFO L125 PetriNetUnfolderBase]: For 162784/162784 co-relation queries the response was YES. [2024-06-28 00:07:59,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8414 conditions, 1082 events. 556/1082 cut-off events. For 162784/162784 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5940 event pairs, 206 based on Foata normal form. 1/1082 useless extension candidates. Maximal degree in co-relation 8292. Up to 1028 conditions per place. [2024-06-28 00:07:59,958 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 164 selfloop transitions, 30 changer transitions 0/196 dead transitions. [2024-06-28 00:07:59,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 196 transitions, 2190 flow [2024-06-28 00:07:59,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 00:07:59,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-28 00:07:59,959 INFO L175 Difference]: Start difference. First operand has 256 places, 185 transitions, 1772 flow. Second operand 12 states and 123 transitions. [2024-06-28 00:07:59,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 196 transitions, 2190 flow [2024-06-28 00:08:00,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 196 transitions, 2106 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:00,346 INFO L231 Difference]: Finished difference. Result has 259 places, 185 transitions, 1759 flow [2024-06-28 00:08:00,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1759, PETRI_PLACES=259, PETRI_TRANSITIONS=185} [2024-06-28 00:08:00,347 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-28 00:08:00,347 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 185 transitions, 1759 flow [2024-06-28 00:08:00,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:00,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:00,347 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 00:08:00,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 00:08:00,347 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 00:08:00,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:00,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1039141504, now seen corresponding path program 11 times [2024-06-28 00:08:00,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:00,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530360281] [2024-06-28 00:08:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:00,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:01,672 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 00:08:01,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530360281] [2024-06-28 00:08:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530360281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:01,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:01,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:01,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043143054] [2024-06-28 00:08:01,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:01,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:01,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:01,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:01,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:08:01,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 185 transitions, 1759 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:01,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:01,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:08:01,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:02,180 INFO L124 PetriNetUnfolderBase]: 560/1090 cut-off events. [2024-06-28 00:08:02,180 INFO L125 PetriNetUnfolderBase]: For 169714/169714 co-relation queries the response was YES. [2024-06-28 00:08:02,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8491 conditions, 1090 events. 560/1090 cut-off events. For 169714/169714 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5996 event pairs, 204 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 8368. Up to 1046 conditions per place. [2024-06-28 00:08:02,188 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 180 selfloop transitions, 16 changer transitions 0/198 dead transitions. [2024-06-28 00:08:02,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 198 transitions, 2207 flow [2024-06-28 00:08:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 00:08:02,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-28 00:08:02,189 INFO L175 Difference]: Start difference. First operand has 259 places, 185 transitions, 1759 flow. Second operand 11 states and 111 transitions. [2024-06-28 00:08:02,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 198 transitions, 2207 flow [2024-06-28 00:08:02,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 198 transitions, 2139 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 00:08:02,633 INFO L231 Difference]: Finished difference. Result has 258 places, 186 transitions, 1759 flow [2024-06-28 00:08:02,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1759, PETRI_PLACES=258, PETRI_TRANSITIONS=186} [2024-06-28 00:08:02,633 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 229 predicate places. [2024-06-28 00:08:02,633 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 186 transitions, 1759 flow [2024-06-28 00:08:02,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:02,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:02,633 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 00:08:02,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 00:08:02,633 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 00:08:02,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1718413582, now seen corresponding path program 12 times [2024-06-28 00:08:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871063125] [2024-06-28 00:08:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:04,048 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 00:08:04,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:04,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871063125] [2024-06-28 00:08:04,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871063125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:04,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:04,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:04,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938558787] [2024-06-28 00:08:04,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:04,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:04,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:04,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:08:04,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 186 transitions, 1759 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:04,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:04,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:08:04,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:04,573 INFO L124 PetriNetUnfolderBase]: 564/1098 cut-off events. [2024-06-28 00:08:04,573 INFO L125 PetriNetUnfolderBase]: For 170893/170893 co-relation queries the response was YES. [2024-06-28 00:08:04,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8543 conditions, 1098 events. 564/1098 cut-off events. For 170893/170893 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6073 event pairs, 210 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 8420. Up to 1048 conditions per place. [2024-06-28 00:08:04,587 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 171 selfloop transitions, 24 changer transitions 0/197 dead transitions. [2024-06-28 00:08:04,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 197 transitions, 2203 flow [2024-06-28 00:08:04,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 00:08:04,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-28 00:08:04,588 INFO L175 Difference]: Start difference. First operand has 258 places, 186 transitions, 1759 flow. Second operand 11 states and 114 transitions. [2024-06-28 00:08:04,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 197 transitions, 2203 flow [2024-06-28 00:08:05,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 197 transitions, 2145 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:05,041 INFO L231 Difference]: Finished difference. Result has 260 places, 187 transitions, 1788 flow [2024-06-28 00:08:05,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1788, PETRI_PLACES=260, PETRI_TRANSITIONS=187} [2024-06-28 00:08:05,042 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-28 00:08:05,042 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 187 transitions, 1788 flow [2024-06-28 00:08:05,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:05,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:05,042 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 00:08:05,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 00:08:05,042 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 00:08:05,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:05,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1718405212, now seen corresponding path program 13 times [2024-06-28 00:08:05,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:05,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759744350] [2024-06-28 00:08:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:05,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:06,471 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 00:08:06,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:06,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759744350] [2024-06-28 00:08:06,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759744350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:06,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:06,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:06,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957451096] [2024-06-28 00:08:06,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:06,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:06,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:06,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:06,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:06,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:08:06,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 187 transitions, 1788 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:06,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:06,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:08:06,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:07,023 INFO L124 PetriNetUnfolderBase]: 568/1106 cut-off events. [2024-06-28 00:08:07,023 INFO L125 PetriNetUnfolderBase]: For 175127/175127 co-relation queries the response was YES. [2024-06-28 00:08:07,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8638 conditions, 1106 events. 568/1106 cut-off events. For 175127/175127 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6121 event pairs, 210 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 8514. Up to 1040 conditions per place. [2024-06-28 00:08:07,033 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 174 selfloop transitions, 23 changer transitions 0/199 dead transitions. [2024-06-28 00:08:07,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 199 transitions, 2240 flow [2024-06-28 00:08:07,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 00:08:07,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-28 00:08:07,041 INFO L175 Difference]: Start difference. First operand has 260 places, 187 transitions, 1788 flow. Second operand 11 states and 115 transitions. [2024-06-28 00:08:07,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 199 transitions, 2240 flow [2024-06-28 00:08:07,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 199 transitions, 2165 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:07,512 INFO L231 Difference]: Finished difference. Result has 262 places, 188 transitions, 1799 flow [2024-06-28 00:08:07,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1799, PETRI_PLACES=262, PETRI_TRANSITIONS=188} [2024-06-28 00:08:07,513 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 233 predicate places. [2024-06-28 00:08:07,513 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 188 transitions, 1799 flow [2024-06-28 00:08:07,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:07,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:07,513 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 00:08:07,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 00:08:07,513 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 00:08:07,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2003751036, now seen corresponding path program 29 times [2024-06-28 00:08:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531110974] [2024-06-28 00:08:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:09,165 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 00:08:09,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:09,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531110974] [2024-06-28 00:08:09,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531110974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:09,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:09,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:09,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825824268] [2024-06-28 00:08:09,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:09,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:09,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:09,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:08:09,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 188 transitions, 1799 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:09,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:09,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:08:09,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:09,805 INFO L124 PetriNetUnfolderBase]: 535/1047 cut-off events. [2024-06-28 00:08:09,805 INFO L125 PetriNetUnfolderBase]: For 171091/171091 co-relation queries the response was YES. [2024-06-28 00:08:09,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6167 conditions, 1047 events. 535/1047 cut-off events. For 171091/171091 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5782 event pairs, 181 based on Foata normal form. 26/1072 useless extension candidates. Maximal degree in co-relation 6042. Up to 887 conditions per place. [2024-06-28 00:08:09,814 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 165 selfloop transitions, 21 changer transitions 17/205 dead transitions. [2024-06-28 00:08:09,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 205 transitions, 2273 flow [2024-06-28 00:08:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:08:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:08:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-28 00:08:09,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2024-06-28 00:08:09,815 INFO L175 Difference]: Start difference. First operand has 262 places, 188 transitions, 1799 flow. Second operand 13 states and 135 transitions. [2024-06-28 00:08:09,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 205 transitions, 2273 flow [2024-06-28 00:08:10,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 205 transitions, 2197 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:10,069 INFO L231 Difference]: Finished difference. Result has 266 places, 179 transitions, 1647 flow [2024-06-28 00:08:10,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1647, PETRI_PLACES=266, PETRI_TRANSITIONS=179} [2024-06-28 00:08:10,070 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-28 00:08:10,070 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 179 transitions, 1647 flow [2024-06-28 00:08:10,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:10,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:10,070 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 00:08:10,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 00:08:10,070 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 00:08:10,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:10,070 INFO L85 PathProgramCache]: Analyzing trace with hash -576216420, now seen corresponding path program 30 times [2024-06-28 00:08:10,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:10,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618675476] [2024-06-28 00:08:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:10,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:11,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:11,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618675476] [2024-06-28 00:08:11,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618675476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:11,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:11,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:11,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619532508] [2024-06-28 00:08:11,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:11,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:11,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:11,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:11,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:11,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:11,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 179 transitions, 1647 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:11,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:11,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:11,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:12,170 INFO L124 PetriNetUnfolderBase]: 504/990 cut-off events. [2024-06-28 00:08:12,171 INFO L125 PetriNetUnfolderBase]: For 126793/126793 co-relation queries the response was YES. [2024-06-28 00:08:12,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 990 events. 504/990 cut-off events. For 126793/126793 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5364 event pairs, 93 based on Foata normal form. 8/997 useless extension candidates. Maximal degree in co-relation 6188. Up to 316 conditions per place. [2024-06-28 00:08:12,179 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 120 selfloop transitions, 68 changer transitions 15/205 dead transitions. [2024-06-28 00:08:12,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 205 transitions, 2331 flow [2024-06-28 00:08:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:08:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:08:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-28 00:08:12,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 00:08:12,180 INFO L175 Difference]: Start difference. First operand has 266 places, 179 transitions, 1647 flow. Second operand 9 states and 130 transitions. [2024-06-28 00:08:12,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 205 transitions, 2331 flow [2024-06-28 00:08:12,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 205 transitions, 2237 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-28 00:08:12,474 INFO L231 Difference]: Finished difference. Result has 253 places, 176 transitions, 1681 flow [2024-06-28 00:08:12,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1681, PETRI_PLACES=253, PETRI_TRANSITIONS=176} [2024-06-28 00:08:12,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 224 predicate places. [2024-06-28 00:08:12,475 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 176 transitions, 1681 flow [2024-06-28 00:08:12,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:12,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:12,475 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 00:08:12,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 00:08:12,475 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 00:08:12,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash -768073886, now seen corresponding path program 31 times [2024-06-28 00:08:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:12,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614838922] [2024-06-28 00:08:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:12,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:14,134 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 00:08:14,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:14,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614838922] [2024-06-28 00:08:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614838922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:14,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:14,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:14,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865182020] [2024-06-28 00:08:14,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:14,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:14,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:14,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:14,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:14,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:14,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 176 transitions, 1681 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:14,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:14,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:14,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:14,622 INFO L124 PetriNetUnfolderBase]: 489/965 cut-off events. [2024-06-28 00:08:14,622 INFO L125 PetriNetUnfolderBase]: For 132011/132011 co-relation queries the response was YES. [2024-06-28 00:08:14,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5746 conditions, 965 events. 489/965 cut-off events. For 132011/132011 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5228 event pairs, 96 based on Foata normal form. 16/980 useless extension candidates. Maximal degree in co-relation 5624. Up to 510 conditions per place. [2024-06-28 00:08:14,631 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 109 selfloop transitions, 67 changer transitions 20/198 dead transitions. [2024-06-28 00:08:14,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 198 transitions, 2171 flow [2024-06-28 00:08:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 00:08:14,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-28 00:08:14,632 INFO L175 Difference]: Start difference. First operand has 253 places, 176 transitions, 1681 flow. Second operand 10 states and 136 transitions. [2024-06-28 00:08:14,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 198 transitions, 2171 flow [2024-06-28 00:08:14,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 198 transitions, 2059 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:14,845 INFO L231 Difference]: Finished difference. Result has 251 places, 167 transitions, 1620 flow [2024-06-28 00:08:14,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1620, PETRI_PLACES=251, PETRI_TRANSITIONS=167} [2024-06-28 00:08:14,845 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2024-06-28 00:08:14,845 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 167 transitions, 1620 flow [2024-06-28 00:08:14,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:14,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:14,846 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 00:08:14,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 00:08:14,846 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 00:08:14,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:14,846 INFO L85 PathProgramCache]: Analyzing trace with hash -518008650, now seen corresponding path program 32 times [2024-06-28 00:08:14,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:14,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621097435] [2024-06-28 00:08:14,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:14,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:16,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:16,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621097435] [2024-06-28 00:08:16,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621097435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:16,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:16,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840190953] [2024-06-28 00:08:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:16,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:16,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:16,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:16,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:16,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:16,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 167 transitions, 1620 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:16,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:16,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:16,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:16,861 INFO L124 PetriNetUnfolderBase]: 446/873 cut-off events. [2024-06-28 00:08:16,862 INFO L125 PetriNetUnfolderBase]: For 96520/96520 co-relation queries the response was YES. [2024-06-28 00:08:16,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 873 events. 446/873 cut-off events. For 96520/96520 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4567 event pairs, 82 based on Foata normal form. 8/880 useless extension candidates. Maximal degree in co-relation 5266. Up to 500 conditions per place. [2024-06-28 00:08:16,868 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 107 selfloop transitions, 65 changer transitions 14/188 dead transitions. [2024-06-28 00:08:16,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 188 transitions, 2076 flow [2024-06-28 00:08:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 00:08:16,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-06-28 00:08:16,869 INFO L175 Difference]: Start difference. First operand has 251 places, 167 transitions, 1620 flow. Second operand 10 states and 133 transitions. [2024-06-28 00:08:16,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 188 transitions, 2076 flow [2024-06-28 00:08:17,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 188 transitions, 1893 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-28 00:08:17,057 INFO L231 Difference]: Finished difference. Result has 237 places, 164 transitions, 1552 flow [2024-06-28 00:08:17,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1552, PETRI_PLACES=237, PETRI_TRANSITIONS=164} [2024-06-28 00:08:17,057 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2024-06-28 00:08:17,057 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 164 transitions, 1552 flow [2024-06-28 00:08:17,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:17,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:17,057 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 00:08:17,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 00:08:17,058 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 00:08:17,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:17,058 INFO L85 PathProgramCache]: Analyzing trace with hash -518123970, now seen corresponding path program 33 times [2024-06-28 00:08:17,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:17,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071742469] [2024-06-28 00:08:17,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:17,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:18,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071742469] [2024-06-28 00:08:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071742469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:18,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:18,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:18,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160066600] [2024-06-28 00:08:18,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:18,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:18,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:18,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:18,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:18,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:18,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 164 transitions, 1552 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:18,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:18,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:18,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:19,062 INFO L124 PetriNetUnfolderBase]: 439/860 cut-off events. [2024-06-28 00:08:19,062 INFO L125 PetriNetUnfolderBase]: For 94473/94473 co-relation queries the response was YES. [2024-06-28 00:08:19,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 860 events. 439/860 cut-off events. For 94473/94473 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4501 event pairs, 74 based on Foata normal form. 8/867 useless extension candidates. Maximal degree in co-relation 5119. Up to 482 conditions per place. [2024-06-28 00:08:19,068 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 102 selfloop transitions, 60 changer transitions 22/186 dead transitions. [2024-06-28 00:08:19,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 186 transitions, 2006 flow [2024-06-28 00:08:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:08:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:08:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-28 00:08:19,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 00:08:19,069 INFO L175 Difference]: Start difference. First operand has 237 places, 164 transitions, 1552 flow. Second operand 9 states and 126 transitions. [2024-06-28 00:08:19,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 186 transitions, 2006 flow [2024-06-28 00:08:19,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 186 transitions, 1870 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:19,256 INFO L231 Difference]: Finished difference. Result has 232 places, 157 transitions, 1488 flow [2024-06-28 00:08:19,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1488, PETRI_PLACES=232, PETRI_TRANSITIONS=157} [2024-06-28 00:08:19,256 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2024-06-28 00:08:19,256 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 157 transitions, 1488 flow [2024-06-28 00:08:19,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:19,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:19,256 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 00:08:19,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 00:08:19,257 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 00:08:19,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:19,257 INFO L85 PathProgramCache]: Analyzing trace with hash -452490114, now seen corresponding path program 34 times [2024-06-28 00:08:19,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:19,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097107970] [2024-06-28 00:08:19,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:19,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:20,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:20,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097107970] [2024-06-28 00:08:20,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097107970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:20,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:20,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:20,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814595949] [2024-06-28 00:08:20,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:20,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:20,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:20,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 157 transitions, 1488 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:20,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:20,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:20,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:21,340 INFO L124 PetriNetUnfolderBase]: 423/832 cut-off events. [2024-06-28 00:08:21,340 INFO L125 PetriNetUnfolderBase]: For 97107/97107 co-relation queries the response was YES. [2024-06-28 00:08:21,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5081 conditions, 832 events. 423/832 cut-off events. For 97107/97107 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4333 event pairs, 71 based on Foata normal form. 10/841 useless extension candidates. Maximal degree in co-relation 4968. Up to 557 conditions per place. [2024-06-28 00:08:21,347 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 114 selfloop transitions, 47 changer transitions 12/175 dead transitions. [2024-06-28 00:08:21,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 175 transitions, 1918 flow [2024-06-28 00:08:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:08:21,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:08:21,347 INFO L175 Difference]: Start difference. First operand has 232 places, 157 transitions, 1488 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:08:21,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 175 transitions, 1918 flow [2024-06-28 00:08:21,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 175 transitions, 1773 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:08:21,521 INFO L231 Difference]: Finished difference. Result has 224 places, 154 transitions, 1418 flow [2024-06-28 00:08:21,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1418, PETRI_PLACES=224, PETRI_TRANSITIONS=154} [2024-06-28 00:08:21,521 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-28 00:08:21,521 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 154 transitions, 1418 flow [2024-06-28 00:08:21,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:21,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:21,521 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 00:08:21,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 00:08:21,521 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 00:08:21,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2121056536, now seen corresponding path program 35 times [2024-06-28 00:08:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:21,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180327297] [2024-06-28 00:08:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180327297] [2024-06-28 00:08:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180327297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:23,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:23,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:23,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676547544] [2024-06-28 00:08:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:23,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:23,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:23,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:23,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:23,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:23,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 154 transitions, 1418 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:23,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:23,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:23,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:23,597 INFO L124 PetriNetUnfolderBase]: 413/818 cut-off events. [2024-06-28 00:08:23,597 INFO L125 PetriNetUnfolderBase]: For 90094/90094 co-relation queries the response was YES. [2024-06-28 00:08:23,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 818 events. 413/818 cut-off events. For 90094/90094 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4261 event pairs, 72 based on Foata normal form. 10/827 useless extension candidates. Maximal degree in co-relation 4786. Up to 533 conditions per place. [2024-06-28 00:08:23,603 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 109 selfloop transitions, 49 changer transitions 12/172 dead transitions. [2024-06-28 00:08:23,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 172 transitions, 1842 flow [2024-06-28 00:08:23,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:08:23,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-28 00:08:23,604 INFO L175 Difference]: Start difference. First operand has 224 places, 154 transitions, 1418 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:08:23,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 172 transitions, 1842 flow [2024-06-28 00:08:23,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 172 transitions, 1719 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:23,762 INFO L231 Difference]: Finished difference. Result has 222 places, 151 transitions, 1378 flow [2024-06-28 00:08:23,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1378, PETRI_PLACES=222, PETRI_TRANSITIONS=151} [2024-06-28 00:08:23,763 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2024-06-28 00:08:23,763 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 151 transitions, 1378 flow [2024-06-28 00:08:23,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:23,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:23,763 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 00:08:23,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 00:08:23,763 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 00:08:23,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash 407990724, now seen corresponding path program 36 times [2024-06-28 00:08:23,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:23,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862078164] [2024-06-28 00:08:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:23,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:25,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:25,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862078164] [2024-06-28 00:08:25,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862078164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:25,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:25,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:25,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373929995] [2024-06-28 00:08:25,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:25,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:25,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:25,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:25,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 151 transitions, 1378 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:25,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:25,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:25,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:25,699 INFO L124 PetriNetUnfolderBase]: 401/798 cut-off events. [2024-06-28 00:08:25,699 INFO L125 PetriNetUnfolderBase]: For 83504/83504 co-relation queries the response was YES. [2024-06-28 00:08:25,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4758 conditions, 798 events. 401/798 cut-off events. For 83504/83504 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4140 event pairs, 68 based on Foata normal form. 8/805 useless extension candidates. Maximal degree in co-relation 4651. Up to 523 conditions per place. [2024-06-28 00:08:25,705 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 107 selfloop transitions, 47 changer transitions 12/168 dead transitions. [2024-06-28 00:08:25,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 168 transitions, 1780 flow [2024-06-28 00:08:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:08:25,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-28 00:08:25,706 INFO L175 Difference]: Start difference. First operand has 222 places, 151 transitions, 1378 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:08:25,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 168 transitions, 1780 flow [2024-06-28 00:08:25,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 168 transitions, 1678 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:25,870 INFO L231 Difference]: Finished difference. Result has 220 places, 148 transitions, 1352 flow [2024-06-28 00:08:25,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1352, PETRI_PLACES=220, PETRI_TRANSITIONS=148} [2024-06-28 00:08:25,870 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-28 00:08:25,870 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 148 transitions, 1352 flow [2024-06-28 00:08:25,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:25,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:25,871 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 00:08:25,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 00:08:25,871 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 00:08:25,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:25,871 INFO L85 PathProgramCache]: Analyzing trace with hash 403406754, now seen corresponding path program 37 times [2024-06-28 00:08:25,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:25,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956767931] [2024-06-28 00:08:25,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:25,872 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 00:08:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956767931] [2024-06-28 00:08:27,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956767931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:27,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:27,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490792509] [2024-06-28 00:08:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:27,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:27,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 148 transitions, 1352 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:27,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:27,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:27,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:27,868 INFO L124 PetriNetUnfolderBase]: 423/844 cut-off events. [2024-06-28 00:08:27,868 INFO L125 PetriNetUnfolderBase]: For 112174/112174 co-relation queries the response was YES. [2024-06-28 00:08:27,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5675 conditions, 844 events. 423/844 cut-off events. For 112174/112174 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4408 event pairs, 85 based on Foata normal form. 8/851 useless extension candidates. Maximal degree in co-relation 5569. Up to 477 conditions per place. [2024-06-28 00:08:27,874 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 111 selfloop transitions, 48 changer transitions 11/172 dead transitions. [2024-06-28 00:08:27,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 172 transitions, 1966 flow [2024-06-28 00:08:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 00:08:27,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-28 00:08:27,875 INFO L175 Difference]: Start difference. First operand has 220 places, 148 transitions, 1352 flow. Second operand 10 states and 138 transitions. [2024-06-28 00:08:27,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 172 transitions, 1966 flow [2024-06-28 00:08:28,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 172 transitions, 1864 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:28,043 INFO L231 Difference]: Finished difference. Result has 217 places, 145 transitions, 1336 flow [2024-06-28 00:08:28,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1336, PETRI_PLACES=217, PETRI_TRANSITIONS=145} [2024-06-28 00:08:28,043 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-28 00:08:28,043 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 145 transitions, 1336 flow [2024-06-28 00:08:28,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:28,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:28,043 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 00:08:28,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 00:08:28,043 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 00:08:28,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:28,044 INFO L85 PathProgramCache]: Analyzing trace with hash 403522074, now seen corresponding path program 38 times [2024-06-28 00:08:28,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:28,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434820086] [2024-06-28 00:08:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:28,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:29,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:29,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434820086] [2024-06-28 00:08:29,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434820086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:29,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:29,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066926277] [2024-06-28 00:08:29,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:29,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:29,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:29,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:29,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:29,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:29,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 145 transitions, 1336 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:29,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:29,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:29,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:30,174 INFO L124 PetriNetUnfolderBase]: 413/826 cut-off events. [2024-06-28 00:08:30,174 INFO L125 PetriNetUnfolderBase]: For 109577/109577 co-relation queries the response was YES. [2024-06-28 00:08:30,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5594 conditions, 826 events. 413/826 cut-off events. For 109577/109577 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4293 event pairs, 78 based on Foata normal form. 8/833 useless extension candidates. Maximal degree in co-relation 5489. Up to 486 conditions per place. [2024-06-28 00:08:30,180 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 113 selfloop transitions, 45 changer transitions 8/168 dead transitions. [2024-06-28 00:08:30,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 168 transitions, 1938 flow [2024-06-28 00:08:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:30,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 00:08:30,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-06-28 00:08:30,181 INFO L175 Difference]: Start difference. First operand has 217 places, 145 transitions, 1336 flow. Second operand 10 states and 134 transitions. [2024-06-28 00:08:30,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 168 transitions, 1938 flow [2024-06-28 00:08:30,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 168 transitions, 1833 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:30,361 INFO L231 Difference]: Finished difference. Result has 214 places, 143 transitions, 1317 flow [2024-06-28 00:08:30,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1317, PETRI_PLACES=214, PETRI_TRANSITIONS=143} [2024-06-28 00:08:30,362 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-28 00:08:30,362 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 143 transitions, 1317 flow [2024-06-28 00:08:30,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:30,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:30,362 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 00:08:30,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 00:08:30,362 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 00:08:30,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:30,362 INFO L85 PathProgramCache]: Analyzing trace with hash 403526724, now seen corresponding path program 39 times [2024-06-28 00:08:30,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:30,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430467395] [2024-06-28 00:08:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:30,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:31,976 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 00:08:31,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430467395] [2024-06-28 00:08:31,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430467395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:31,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:31,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:31,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46009364] [2024-06-28 00:08:31,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:31,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:31,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:31,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:31,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:32,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:32,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 143 transitions, 1317 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:32,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:32,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:32,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:32,489 INFO L124 PetriNetUnfolderBase]: 382/765 cut-off events. [2024-06-28 00:08:32,489 INFO L125 PetriNetUnfolderBase]: For 81434/81434 co-relation queries the response was YES. [2024-06-28 00:08:32,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4576 conditions, 765 events. 382/765 cut-off events. For 81434/81434 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3921 event pairs, 69 based on Foata normal form. 10/774 useless extension candidates. Maximal degree in co-relation 4473. Up to 486 conditions per place. [2024-06-28 00:08:32,494 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 102 selfloop transitions, 41 changer transitions 16/161 dead transitions. [2024-06-28 00:08:32,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 161 transitions, 1719 flow [2024-06-28 00:08:32,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:08:32,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-28 00:08:32,495 INFO L175 Difference]: Start difference. First operand has 214 places, 143 transitions, 1317 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:08:32,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 161 transitions, 1719 flow [2024-06-28 00:08:32,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 161 transitions, 1627 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:32,639 INFO L231 Difference]: Finished difference. Result has 213 places, 138 transitions, 1274 flow [2024-06-28 00:08:32,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1274, PETRI_PLACES=213, PETRI_TRANSITIONS=138} [2024-06-28 00:08:32,639 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-28 00:08:32,639 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 138 transitions, 1274 flow [2024-06-28 00:08:32,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:32,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:32,639 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 00:08:32,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 00:08:32,640 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 00:08:32,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash -978709488, now seen corresponding path program 40 times [2024-06-28 00:08:32,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:32,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832332762] [2024-06-28 00:08:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:32,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:34,125 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 00:08:34,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:34,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832332762] [2024-06-28 00:08:34,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832332762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:34,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:34,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:34,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726760671] [2024-06-28 00:08:34,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:34,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:34,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:34,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:34,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:34,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 138 transitions, 1274 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:34,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:34,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:34,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:34,697 INFO L124 PetriNetUnfolderBase]: 368/739 cut-off events. [2024-06-28 00:08:34,697 INFO L125 PetriNetUnfolderBase]: For 73435/73435 co-relation queries the response was YES. [2024-06-28 00:08:34,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 739 events. 368/739 cut-off events. For 73435/73435 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3751 event pairs, 56 based on Foata normal form. 8/746 useless extension candidates. Maximal degree in co-relation 4337. Up to 265 conditions per place. [2024-06-28 00:08:34,704 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 82 selfloop transitions, 68 changer transitions 12/164 dead transitions. [2024-06-28 00:08:34,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 164 transitions, 1856 flow [2024-06-28 00:08:34,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 00:08:34,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45666666666666667 [2024-06-28 00:08:34,705 INFO L175 Difference]: Start difference. First operand has 213 places, 138 transitions, 1274 flow. Second operand 10 states and 137 transitions. [2024-06-28 00:08:34,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 164 transitions, 1856 flow [2024-06-28 00:08:34,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 164 transitions, 1758 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:34,815 INFO L231 Difference]: Finished difference. Result has 205 places, 135 transitions, 1306 flow [2024-06-28 00:08:34,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1306, PETRI_PLACES=205, PETRI_TRANSITIONS=135} [2024-06-28 00:08:34,816 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-28 00:08:34,816 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 135 transitions, 1306 flow [2024-06-28 00:08:34,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:34,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:34,816 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 00:08:34,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 00:08:34,816 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 00:08:34,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:34,817 INFO L85 PathProgramCache]: Analyzing trace with hash -118530346, now seen corresponding path program 41 times [2024-06-28 00:08:34,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:34,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059165049] [2024-06-28 00:08:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:34,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:36,300 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 00:08:36,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:36,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059165049] [2024-06-28 00:08:36,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059165049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:36,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:36,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:36,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731079200] [2024-06-28 00:08:36,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:36,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:36,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:36,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:36,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 135 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:36,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:36,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:36,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:36,700 INFO L124 PetriNetUnfolderBase]: 383/770 cut-off events. [2024-06-28 00:08:36,700 INFO L125 PetriNetUnfolderBase]: For 93637/93637 co-relation queries the response was YES. [2024-06-28 00:08:36,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5282 conditions, 770 events. 383/770 cut-off events. For 93637/93637 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3941 event pairs, 63 based on Foata normal form. 8/777 useless extension candidates. Maximal degree in co-relation 5183. Up to 374 conditions per place. [2024-06-28 00:08:36,706 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 84 selfloop transitions, 68 changer transitions 8/162 dead transitions. [2024-06-28 00:08:36,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 162 transitions, 1904 flow [2024-06-28 00:08:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:36,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:36,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:08:36,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 00:08:36,707 INFO L175 Difference]: Start difference. First operand has 205 places, 135 transitions, 1306 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:08:36,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 162 transitions, 1904 flow [2024-06-28 00:08:36,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 162 transitions, 1771 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:36,837 INFO L231 Difference]: Finished difference. Result has 202 places, 133 transitions, 1305 flow [2024-06-28 00:08:36,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1305, PETRI_PLACES=202, PETRI_TRANSITIONS=133} [2024-06-28 00:08:36,837 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-28 00:08:36,837 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 133 transitions, 1305 flow [2024-06-28 00:08:36,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:36,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:36,837 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 00:08:36,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 00:08:36,838 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 00:08:36,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash -118525696, now seen corresponding path program 42 times [2024-06-28 00:08:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:36,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133583984] [2024-06-28 00:08:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:36,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:38,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:38,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133583984] [2024-06-28 00:08:38,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133583984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:38,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:38,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:38,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204745570] [2024-06-28 00:08:38,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:38,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:38,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:38,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:38,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:38,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:38,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 133 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:38,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:38,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:38,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:39,087 INFO L124 PetriNetUnfolderBase]: 352/709 cut-off events. [2024-06-28 00:08:39,087 INFO L125 PetriNetUnfolderBase]: For 69392/69392 co-relation queries the response was YES. [2024-06-28 00:08:39,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 709 events. 352/709 cut-off events. For 69392/69392 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3569 event pairs, 54 based on Foata normal form. 10/718 useless extension candidates. Maximal degree in co-relation 4267. Up to 374 conditions per place. [2024-06-28 00:08:39,092 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 74 selfloop transitions, 64 changer transitions 15/155 dead transitions. [2024-06-28 00:08:39,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 155 transitions, 1715 flow [2024-06-28 00:08:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 00:08:39,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-06-28 00:08:39,093 INFO L175 Difference]: Start difference. First operand has 202 places, 133 transitions, 1305 flow. Second operand 10 states and 134 transitions. [2024-06-28 00:08:39,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 155 transitions, 1715 flow [2024-06-28 00:08:39,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 155 transitions, 1577 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:39,185 INFO L231 Difference]: Finished difference. Result has 201 places, 128 transitions, 1261 flow [2024-06-28 00:08:39,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1261, PETRI_PLACES=201, PETRI_TRANSITIONS=128} [2024-06-28 00:08:39,185 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-28 00:08:39,185 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 128 transitions, 1261 flow [2024-06-28 00:08:39,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:39,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:39,185 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 00:08:39,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 00:08:39,185 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 00:08:39,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash -113877122, now seen corresponding path program 14 times [2024-06-28 00:08:39,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:39,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452543207] [2024-06-28 00:08:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:39,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:40,889 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 00:08:40,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:40,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452543207] [2024-06-28 00:08:40,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452543207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:40,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:40,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:40,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902889653] [2024-06-28 00:08:40,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:40,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:40,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:40,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:40,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:08:40,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 128 transitions, 1261 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 00:08:40,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:40,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:08:40,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:41,468 INFO L124 PetriNetUnfolderBase]: 328/658 cut-off events. [2024-06-28 00:08:41,468 INFO L125 PetriNetUnfolderBase]: For 49236/49236 co-relation queries the response was YES. [2024-06-28 00:08:41,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4188 conditions, 658 events. 328/658 cut-off events. For 49236/49236 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3239 event pairs, 62 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4092. Up to 427 conditions per place. [2024-06-28 00:08:41,473 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 105 selfloop transitions, 38 changer transitions 0/145 dead transitions. [2024-06-28 00:08:41,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 145 transitions, 1645 flow [2024-06-28 00:08:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 00:08:41,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:08:41,474 INFO L175 Difference]: Start difference. First operand has 201 places, 128 transitions, 1261 flow. Second operand 10 states and 120 transitions. [2024-06-28 00:08:41,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 145 transitions, 1645 flow [2024-06-28 00:08:41,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 145 transitions, 1507 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:41,560 INFO L231 Difference]: Finished difference. Result has 194 places, 129 transitions, 1241 flow [2024-06-28 00:08:41,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1241, PETRI_PLACES=194, PETRI_TRANSITIONS=129} [2024-06-28 00:08:41,560 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-28 00:08:41,560 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 129 transitions, 1241 flow [2024-06-28 00:08:41,560 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 00:08:41,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:41,560 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 00:08:41,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 00:08:41,560 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 00:08:41,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash -114057046, now seen corresponding path program 43 times [2024-06-28 00:08:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:41,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816689912] [2024-06-28 00:08:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:43,057 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 00:08:43,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:43,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816689912] [2024-06-28 00:08:43,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816689912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:43,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:43,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:43,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758825743] [2024-06-28 00:08:43,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:43,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:43,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:43,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:43,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:43,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 129 transitions, 1241 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:43,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:43,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:43,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:43,584 INFO L124 PetriNetUnfolderBase]: 344/694 cut-off events. [2024-06-28 00:08:43,584 INFO L125 PetriNetUnfolderBase]: For 62431/62431 co-relation queries the response was YES. [2024-06-28 00:08:43,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4182 conditions, 694 events. 344/694 cut-off events. For 62431/62431 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3469 event pairs, 60 based on Foata normal form. 10/703 useless extension candidates. Maximal degree in co-relation 4089. Up to 401 conditions per place. [2024-06-28 00:08:43,589 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 81 selfloop transitions, 57 changer transitions 11/151 dead transitions. [2024-06-28 00:08:43,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 151 transitions, 1647 flow [2024-06-28 00:08:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 00:08:43,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 00:08:43,590 INFO L175 Difference]: Start difference. First operand has 194 places, 129 transitions, 1241 flow. Second operand 10 states and 135 transitions. [2024-06-28 00:08:43,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 151 transitions, 1647 flow [2024-06-28 00:08:43,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 151 transitions, 1537 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:43,681 INFO L231 Difference]: Finished difference. Result has 196 places, 126 transitions, 1230 flow [2024-06-28 00:08:43,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1230, PETRI_PLACES=196, PETRI_TRANSITIONS=126} [2024-06-28 00:08:43,682 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2024-06-28 00:08:43,682 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 126 transitions, 1230 flow [2024-06-28 00:08:43,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:43,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:43,682 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 00:08:43,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 00:08:43,682 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 00:08:43,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash 52172084, now seen corresponding path program 44 times [2024-06-28 00:08:43,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:43,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897742404] [2024-06-28 00:08:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:43,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:45,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:45,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897742404] [2024-06-28 00:08:45,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897742404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:45,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:45,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:45,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360759318] [2024-06-28 00:08:45,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:45,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:45,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:45,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:45,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:45,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:45,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 126 transitions, 1230 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:45,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:45,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:45,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:45,871 INFO L124 PetriNetUnfolderBase]: 361/733 cut-off events. [2024-06-28 00:08:45,871 INFO L125 PetriNetUnfolderBase]: For 81375/81375 co-relation queries the response was YES. [2024-06-28 00:08:45,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4958 conditions, 733 events. 361/733 cut-off events. For 81375/81375 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3715 event pairs, 66 based on Foata normal form. 8/740 useless extension candidates. Maximal degree in co-relation 4864. Up to 359 conditions per place. [2024-06-28 00:08:45,876 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 90 selfloop transitions, 51 changer transitions 7/150 dead transitions. [2024-06-28 00:08:45,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 150 transitions, 1778 flow [2024-06-28 00:08:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:45,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:08:45,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-28 00:08:45,877 INFO L175 Difference]: Start difference. First operand has 196 places, 126 transitions, 1230 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:08:45,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 150 transitions, 1778 flow [2024-06-28 00:08:45,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 150 transitions, 1656 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:45,981 INFO L231 Difference]: Finished difference. Result has 195 places, 124 transitions, 1204 flow [2024-06-28 00:08:45,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1204, PETRI_PLACES=195, PETRI_TRANSITIONS=124} [2024-06-28 00:08:45,981 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-28 00:08:45,981 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 124 transitions, 1204 flow [2024-06-28 00:08:45,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:45,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:45,981 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 00:08:45,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 00:08:45,981 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 00:08:45,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:45,981 INFO L85 PathProgramCache]: Analyzing trace with hash -91325950, now seen corresponding path program 15 times [2024-06-28 00:08:45,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:45,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094487817] [2024-06-28 00:08:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:45,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:47,904 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 00:08:47,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:47,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094487817] [2024-06-28 00:08:47,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094487817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:47,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:47,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:47,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143833324] [2024-06-28 00:08:47,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:47,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:47,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:47,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:47,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:48,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:08:48,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 124 transitions, 1204 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:48,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:48,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:08:48,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:48,578 INFO L124 PetriNetUnfolderBase]: 347/703 cut-off events. [2024-06-28 00:08:48,578 INFO L125 PetriNetUnfolderBase]: For 66804/66804 co-relation queries the response was YES. [2024-06-28 00:08:48,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 703 events. 347/703 cut-off events. For 66804/66804 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3542 event pairs, 69 based on Foata normal form. 2/704 useless extension candidates. Maximal degree in co-relation 4784. Up to 472 conditions per place. [2024-06-28 00:08:48,584 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 103 selfloop transitions, 39 changer transitions 0/144 dead transitions. [2024-06-28 00:08:48,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 144 transitions, 1598 flow [2024-06-28 00:08:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:48,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 00:08:48,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2024-06-28 00:08:48,585 INFO L175 Difference]: Start difference. First operand has 195 places, 124 transitions, 1204 flow. Second operand 12 states and 139 transitions. [2024-06-28 00:08:48,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 144 transitions, 1598 flow [2024-06-28 00:08:48,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 144 transitions, 1498 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:48,686 INFO L231 Difference]: Finished difference. Result has 195 places, 125 transitions, 1226 flow [2024-06-28 00:08:48,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1226, PETRI_PLACES=195, PETRI_TRANSITIONS=125} [2024-06-28 00:08:48,687 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-28 00:08:48,687 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 125 transitions, 1226 flow [2024-06-28 00:08:48,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:48,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:48,687 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 00:08:48,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 00:08:48,687 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 00:08:48,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:48,687 INFO L85 PathProgramCache]: Analyzing trace with hash -973947888, now seen corresponding path program 45 times [2024-06-28 00:08:48,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:48,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594979468] [2024-06-28 00:08:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:48,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:50,368 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 00:08:50,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:50,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594979468] [2024-06-28 00:08:50,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594979468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:50,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:50,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:50,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496282943] [2024-06-28 00:08:50,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:50,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:50,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:50,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:50,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 125 transitions, 1226 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:50,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:50,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:50,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:50,918 INFO L124 PetriNetUnfolderBase]: 356/726 cut-off events. [2024-06-28 00:08:50,918 INFO L125 PetriNetUnfolderBase]: For 77177/77177 co-relation queries the response was YES. [2024-06-28 00:08:50,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4799 conditions, 726 events. 356/726 cut-off events. For 77177/77177 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3704 event pairs, 73 based on Foata normal form. 10/735 useless extension candidates. Maximal degree in co-relation 4708. Up to 451 conditions per place. [2024-06-28 00:08:50,922 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 82 selfloop transitions, 51 changer transitions 11/146 dead transitions. [2024-06-28 00:08:50,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 146 transitions, 1614 flow [2024-06-28 00:08:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:08:50,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-28 00:08:50,922 INFO L175 Difference]: Start difference. First operand has 195 places, 125 transitions, 1226 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:08:50,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 146 transitions, 1614 flow [2024-06-28 00:08:51,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 146 transitions, 1500 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:51,041 INFO L231 Difference]: Finished difference. Result has 195 places, 122 transitions, 1197 flow [2024-06-28 00:08:51,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1197, PETRI_PLACES=195, PETRI_TRANSITIONS=122} [2024-06-28 00:08:51,041 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-28 00:08:51,041 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 122 transitions, 1197 flow [2024-06-28 00:08:51,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:51,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:51,041 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 00:08:51,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 00:08:51,042 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 00:08:51,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:51,042 INFO L85 PathProgramCache]: Analyzing trace with hash -114061696, now seen corresponding path program 46 times [2024-06-28 00:08:51,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:51,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808061501] [2024-06-28 00:08:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:51,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:52,569 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 00:08:52,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:52,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808061501] [2024-06-28 00:08:52,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808061501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:52,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:52,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:52,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287886894] [2024-06-28 00:08:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:52,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:52,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 122 transitions, 1197 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:52,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:52,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:52,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:53,068 INFO L124 PetriNetUnfolderBase]: 320/658 cut-off events. [2024-06-28 00:08:53,068 INFO L125 PetriNetUnfolderBase]: For 57485/57485 co-relation queries the response was YES. [2024-06-28 00:08:53,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 658 events. 320/658 cut-off events. For 57485/57485 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3301 event pairs, 56 based on Foata normal form. 8/665 useless extension candidates. Maximal degree in co-relation 3912. Up to 383 conditions per place. [2024-06-28 00:08:53,072 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 77 selfloop transitions, 52 changer transitions 11/142 dead transitions. [2024-06-28 00:08:53,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 142 transitions, 1563 flow [2024-06-28 00:08:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:08:53,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:08:53,073 INFO L175 Difference]: Start difference. First operand has 195 places, 122 transitions, 1197 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:08:53,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 142 transitions, 1563 flow [2024-06-28 00:08:53,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 142 transitions, 1457 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:53,167 INFO L231 Difference]: Finished difference. Result has 193 places, 119 transitions, 1178 flow [2024-06-28 00:08:53,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1178, PETRI_PLACES=193, PETRI_TRANSITIONS=119} [2024-06-28 00:08:53,168 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 164 predicate places. [2024-06-28 00:08:53,168 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 119 transitions, 1178 flow [2024-06-28 00:08:53,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:53,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:53,168 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 00:08:53,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 00:08:53,168 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 00:08:53,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash 52176734, now seen corresponding path program 47 times [2024-06-28 00:08:53,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:53,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319106904] [2024-06-28 00:08:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:53,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:54,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:54,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319106904] [2024-06-28 00:08:54,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319106904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:54,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:54,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:54,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645201607] [2024-06-28 00:08:54,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:54,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:54,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:54,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:54,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:54,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:54,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 119 transitions, 1178 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:54,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:54,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:54,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:55,301 INFO L124 PetriNetUnfolderBase]: 317/653 cut-off events. [2024-06-28 00:08:55,301 INFO L125 PetriNetUnfolderBase]: For 60040/60040 co-relation queries the response was YES. [2024-06-28 00:08:55,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 653 events. 317/653 cut-off events. For 60040/60040 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3266 event pairs, 59 based on Foata normal form. 10/662 useless extension candidates. Maximal degree in co-relation 3874. Up to 352 conditions per place. [2024-06-28 00:08:55,305 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 79 selfloop transitions, 46 changer transitions 12/139 dead transitions. [2024-06-28 00:08:55,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 139 transitions, 1548 flow [2024-06-28 00:08:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 00:08:55,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-28 00:08:55,306 INFO L175 Difference]: Start difference. First operand has 193 places, 119 transitions, 1178 flow. Second operand 11 states and 139 transitions. [2024-06-28 00:08:55,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 139 transitions, 1548 flow [2024-06-28 00:08:55,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 139 transitions, 1438 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:55,393 INFO L231 Difference]: Finished difference. Result has 190 places, 115 transitions, 1132 flow [2024-06-28 00:08:55,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1132, PETRI_PLACES=190, PETRI_TRANSITIONS=115} [2024-06-28 00:08:55,393 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-28 00:08:55,393 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 115 transitions, 1132 flow [2024-06-28 00:08:55,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:55,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:55,393 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 00:08:55,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 00:08:55,394 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 00:08:55,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash 969460510, now seen corresponding path program 16 times [2024-06-28 00:08:55,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:55,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198781599] [2024-06-28 00:08:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:55,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:57,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:57,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198781599] [2024-06-28 00:08:57,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198781599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:57,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:57,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:57,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187809555] [2024-06-28 00:08:57,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:57,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:57,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:57,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:57,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:08:57,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 115 transitions, 1132 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:57,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:57,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:08:57,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:57,756 INFO L124 PetriNetUnfolderBase]: 296/610 cut-off events. [2024-06-28 00:08:57,756 INFO L125 PetriNetUnfolderBase]: For 41510/41510 co-relation queries the response was YES. [2024-06-28 00:08:57,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3812 conditions, 610 events. 296/610 cut-off events. For 41510/41510 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3008 event pairs, 54 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 3722. Up to 350 conditions per place. [2024-06-28 00:08:57,760 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 93 selfloop transitions, 41 changer transitions 0/136 dead transitions. [2024-06-28 00:08:57,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 136 transitions, 1634 flow [2024-06-28 00:08:57,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:08:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:08:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-28 00:08:57,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 00:08:57,761 INFO L175 Difference]: Start difference. First operand has 190 places, 115 transitions, 1132 flow. Second operand 13 states and 143 transitions. [2024-06-28 00:08:57,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 136 transitions, 1634 flow [2024-06-28 00:08:57,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 136 transitions, 1530 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:08:57,830 INFO L231 Difference]: Finished difference. Result has 188 places, 116 transitions, 1160 flow [2024-06-28 00:08:57,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1160, PETRI_PLACES=188, PETRI_TRANSITIONS=116} [2024-06-28 00:08:57,830 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-28 00:08:57,830 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 116 transitions, 1160 flow [2024-06-28 00:08:57,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:57,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:57,831 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 00:08:57,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 00:08:57,831 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 00:08:57,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:57,831 INFO L85 PathProgramCache]: Analyzing trace with hash -128239436, now seen corresponding path program 48 times [2024-06-28 00:08:57,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:57,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165261228] [2024-06-28 00:08:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:57,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:59,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:59,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165261228] [2024-06-28 00:08:59,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165261228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:59,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:59,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:59,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172420679] [2024-06-28 00:08:59,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:59,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:59,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:59,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:59,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:59,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:08:59,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 116 transitions, 1160 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:59,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:59,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:08:59,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:00,101 INFO L124 PetriNetUnfolderBase]: 312/646 cut-off events. [2024-06-28 00:09:00,102 INFO L125 PetriNetUnfolderBase]: For 53797/53797 co-relation queries the response was YES. [2024-06-28 00:09:00,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3894 conditions, 646 events. 312/646 cut-off events. For 53797/53797 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3239 event pairs, 58 based on Foata normal form. 10/655 useless extension candidates. Maximal degree in co-relation 3806. Up to 371 conditions per place. [2024-06-28 00:09:00,105 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 83 selfloop transitions, 40 changer transitions 11/136 dead transitions. [2024-06-28 00:09:00,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 136 transitions, 1524 flow [2024-06-28 00:09:00,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 00:09:00,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-28 00:09:00,106 INFO L175 Difference]: Start difference. First operand has 188 places, 116 transitions, 1160 flow. Second operand 11 states and 137 transitions. [2024-06-28 00:09:00,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 136 transitions, 1524 flow [2024-06-28 00:09:00,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 136 transitions, 1393 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:00,190 INFO L231 Difference]: Finished difference. Result has 188 places, 113 transitions, 1088 flow [2024-06-28 00:09:00,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1088, PETRI_PLACES=188, PETRI_TRANSITIONS=113} [2024-06-28 00:09:00,190 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-28 00:09:00,190 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 113 transitions, 1088 flow [2024-06-28 00:09:00,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:00,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:00,190 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 00:09:00,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 00:09:00,190 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 00:09:00,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:00,191 INFO L85 PathProgramCache]: Analyzing trace with hash -128232492, now seen corresponding path program 17 times [2024-06-28 00:09:00,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:00,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723313836] [2024-06-28 00:09:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:00,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:01,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:01,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723313836] [2024-06-28 00:09:01,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723313836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:01,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:01,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:01,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995754068] [2024-06-28 00:09:01,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:01,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:01,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:01,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:01,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:02,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:02,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 113 transitions, 1088 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:02,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:02,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:02,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:02,528 INFO L124 PetriNetUnfolderBase]: 283/591 cut-off events. [2024-06-28 00:09:02,528 INFO L125 PetriNetUnfolderBase]: For 35694/35694 co-relation queries the response was YES. [2024-06-28 00:09:02,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3419 conditions, 591 events. 283/591 cut-off events. For 35694/35694 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2913 event pairs, 55 based on Foata normal form. 2/592 useless extension candidates. Maximal degree in co-relation 3331. Up to 360 conditions per place. [2024-06-28 00:09:02,532 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 93 selfloop transitions, 35 changer transitions 0/130 dead transitions. [2024-06-28 00:09:02,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 130 transitions, 1412 flow [2024-06-28 00:09:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:09:02,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 00:09:02,533 INFO L175 Difference]: Start difference. First operand has 188 places, 113 transitions, 1088 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:09:02,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 130 transitions, 1412 flow [2024-06-28 00:09:02,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 130 transitions, 1296 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:02,609 INFO L231 Difference]: Finished difference. Result has 186 places, 113 transitions, 1046 flow [2024-06-28 00:09:02,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1046, PETRI_PLACES=186, PETRI_TRANSITIONS=113} [2024-06-28 00:09:02,610 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-28 00:09:02,610 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 113 transitions, 1046 flow [2024-06-28 00:09:02,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:02,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:02,610 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 00:09:02,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 00:09:02,610 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 00:09:02,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:02,610 INFO L85 PathProgramCache]: Analyzing trace with hash 969214556, now seen corresponding path program 49 times [2024-06-28 00:09:02,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:02,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960999875] [2024-06-28 00:09:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:02,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:04,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:04,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960999875] [2024-06-28 00:09:04,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960999875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:04,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:04,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:04,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786964128] [2024-06-28 00:09:04,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:04,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:04,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:04,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:04,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:09:04,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 113 transitions, 1046 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:04,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:04,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:09:04,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:04,916 INFO L124 PetriNetUnfolderBase]: 270/568 cut-off events. [2024-06-28 00:09:04,916 INFO L125 PetriNetUnfolderBase]: For 30241/30241 co-relation queries the response was YES. [2024-06-28 00:09:04,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2650 conditions, 568 events. 270/568 cut-off events. For 30241/30241 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2811 event pairs, 44 based on Foata normal form. 10/577 useless extension candidates. Maximal degree in co-relation 2563. Up to 293 conditions per place. [2024-06-28 00:09:04,920 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 79 selfloop transitions, 41 changer transitions 11/133 dead transitions. [2024-06-28 00:09:04,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 133 transitions, 1384 flow [2024-06-28 00:09:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:09:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:09:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-28 00:09:04,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38974358974358975 [2024-06-28 00:09:04,920 INFO L175 Difference]: Start difference. First operand has 186 places, 113 transitions, 1046 flow. Second operand 13 states and 152 transitions. [2024-06-28 00:09:04,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 133 transitions, 1384 flow [2024-06-28 00:09:04,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 133 transitions, 1291 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:04,964 INFO L231 Difference]: Finished difference. Result has 189 places, 109 transitions, 1014 flow [2024-06-28 00:09:04,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1014, PETRI_PLACES=189, PETRI_TRANSITIONS=109} [2024-06-28 00:09:04,965 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-28 00:09:04,965 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 109 transitions, 1014 flow [2024-06-28 00:09:04,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:04,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:04,965 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 00:09:04,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 00:09:04,965 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 00:09:04,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:04,965 INFO L85 PathProgramCache]: Analyzing trace with hash -863828659, now seen corresponding path program 1 times [2024-06-28 00:09:04,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:04,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431882163] [2024-06-28 00:09:04,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:04,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:07,109 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 00:09:07,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:07,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431882163] [2024-06-28 00:09:07,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431882163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:07,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:07,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:07,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754325772] [2024-06-28 00:09:07,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:07,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:07,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:07,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:07,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:07,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:07,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 109 transitions, 1014 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 00:09:07,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:07,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:07,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:07,523 INFO L124 PetriNetUnfolderBase]: 252/538 cut-off events. [2024-06-28 00:09:07,523 INFO L125 PetriNetUnfolderBase]: For 23664/23664 co-relation queries the response was YES. [2024-06-28 00:09:07,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 538 events. 252/538 cut-off events. For 23664/23664 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2685 event pairs, 65 based on Foata normal form. 6/543 useless extension candidates. Maximal degree in co-relation 2399. Up to 349 conditions per place. [2024-06-28 00:09:07,527 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 88 selfloop transitions, 28 changer transitions 7/125 dead transitions. [2024-06-28 00:09:07,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 125 transitions, 1308 flow [2024-06-28 00:09:07,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:07,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:09:07,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-28 00:09:07,527 INFO L175 Difference]: Start difference. First operand has 189 places, 109 transitions, 1014 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:09:07,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 125 transitions, 1308 flow [2024-06-28 00:09:07,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 125 transitions, 1196 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 00:09:07,563 INFO L231 Difference]: Finished difference. Result has 179 places, 106 transitions, 935 flow [2024-06-28 00:09:07,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=935, PETRI_PLACES=179, PETRI_TRANSITIONS=106} [2024-06-28 00:09:07,563 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-28 00:09:07,564 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 106 transitions, 935 flow [2024-06-28 00:09:07,564 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 00:09:07,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:07,564 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 00:09:07,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 00:09:07,564 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 00:09:07,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1340140105, now seen corresponding path program 2 times [2024-06-28 00:09:07,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:07,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961655908] [2024-06-28 00:09:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:07,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:09,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:09,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961655908] [2024-06-28 00:09:09,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961655908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:09,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:09,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:09,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305311093] [2024-06-28 00:09:09,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:09,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:09,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:09,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:09,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:09,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:09,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 106 transitions, 935 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 00:09:09,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:09,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:09,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:10,272 INFO L124 PetriNetUnfolderBase]: 240/511 cut-off events. [2024-06-28 00:09:10,272 INFO L125 PetriNetUnfolderBase]: For 22096/22096 co-relation queries the response was YES. [2024-06-28 00:09:10,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 511 events. 240/511 cut-off events. For 22096/22096 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2494 event pairs, 67 based on Foata normal form. 6/516 useless extension candidates. Maximal degree in co-relation 2193. Up to 345 conditions per place. [2024-06-28 00:09:10,275 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 87 selfloop transitions, 24 changer transitions 12/125 dead transitions. [2024-06-28 00:09:10,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 125 transitions, 1241 flow [2024-06-28 00:09:10,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:09:10,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-28 00:09:10,276 INFO L175 Difference]: Start difference. First operand has 179 places, 106 transitions, 935 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:09:10,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 125 transitions, 1241 flow [2024-06-28 00:09:10,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 125 transitions, 1172 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:10,310 INFO L231 Difference]: Finished difference. Result has 179 places, 102 transitions, 886 flow [2024-06-28 00:09:10,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=886, PETRI_PLACES=179, PETRI_TRANSITIONS=102} [2024-06-28 00:09:10,310 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-28 00:09:10,311 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 102 transitions, 886 flow [2024-06-28 00:09:10,311 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 00:09:10,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:10,311 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 00:09:10,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 00:09:10,311 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 00:09:10,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1139050855, now seen corresponding path program 3 times [2024-06-28 00:09:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:10,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53193068] [2024-06-28 00:09:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:10,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:12,290 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 00:09:12,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:12,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53193068] [2024-06-28 00:09:12,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53193068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:12,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:12,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:12,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346049761] [2024-06-28 00:09:12,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:12,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:12,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:12,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:12,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 102 transitions, 886 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 00:09:12,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:12,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:12,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:12,907 INFO L124 PetriNetUnfolderBase]: 231/492 cut-off events. [2024-06-28 00:09:12,907 INFO L125 PetriNetUnfolderBase]: For 22060/22060 co-relation queries the response was YES. [2024-06-28 00:09:12,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2191 conditions, 492 events. 231/492 cut-off events. For 22060/22060 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2365 event pairs, 67 based on Foata normal form. 6/497 useless extension candidates. Maximal degree in co-relation 2106. Up to 335 conditions per place. [2024-06-28 00:09:12,911 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 84 selfloop transitions, 23 changer transitions 11/120 dead transitions. [2024-06-28 00:09:12,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 120 transitions, 1176 flow [2024-06-28 00:09:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 00:09:12,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-28 00:09:12,911 INFO L175 Difference]: Start difference. First operand has 179 places, 102 transitions, 886 flow. Second operand 12 states and 129 transitions. [2024-06-28 00:09:12,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 120 transitions, 1176 flow [2024-06-28 00:09:12,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 120 transitions, 1107 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:09:12,944 INFO L231 Difference]: Finished difference. Result has 173 places, 99 transitions, 847 flow [2024-06-28 00:09:12,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=847, PETRI_PLACES=173, PETRI_TRANSITIONS=99} [2024-06-28 00:09:12,944 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-28 00:09:12,944 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 99 transitions, 847 flow [2024-06-28 00:09:12,944 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 00:09:12,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:12,944 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 00:09:12,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 00:09:12,945 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 00:09:12,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2096547307, now seen corresponding path program 4 times [2024-06-28 00:09:12,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:12,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646400101] [2024-06-28 00:09:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:12,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:15,125 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 00:09:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646400101] [2024-06-28 00:09:15,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646400101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:15,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:15,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:15,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105811533] [2024-06-28 00:09:15,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:15,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:15,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:15,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:15,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:15,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:15,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 99 transitions, 847 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 00:09:15,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:15,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:15,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:15,537 INFO L124 PetriNetUnfolderBase]: 221/474 cut-off events. [2024-06-28 00:09:15,537 INFO L125 PetriNetUnfolderBase]: For 19912/19912 co-relation queries the response was YES. [2024-06-28 00:09:15,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 474 events. 221/474 cut-off events. For 19912/19912 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2250 event pairs, 63 based on Foata normal form. 6/479 useless extension candidates. Maximal degree in co-relation 2013. Up to 325 conditions per place. [2024-06-28 00:09:15,540 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 75 selfloop transitions, 24 changer transitions 15/116 dead transitions. [2024-06-28 00:09:15,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 116 transitions, 1127 flow [2024-06-28 00:09:15,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:15,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 00:09:15,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 00:09:15,541 INFO L175 Difference]: Start difference. First operand has 173 places, 99 transitions, 847 flow. Second operand 10 states and 115 transitions. [2024-06-28 00:09:15,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 116 transitions, 1127 flow [2024-06-28 00:09:15,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 116 transitions, 1075 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:15,563 INFO L231 Difference]: Finished difference. Result has 167 places, 93 transitions, 795 flow [2024-06-28 00:09:15,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=795, PETRI_PLACES=167, PETRI_TRANSITIONS=93} [2024-06-28 00:09:15,563 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-28 00:09:15,563 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 93 transitions, 795 flow [2024-06-28 00:09:15,563 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 00:09:15,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:15,564 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 00:09:15,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 00:09:15,564 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 00:09:15,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:15,564 INFO L85 PathProgramCache]: Analyzing trace with hash 260156343, now seen corresponding path program 5 times [2024-06-28 00:09:15,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:15,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829645053] [2024-06-28 00:09:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:15,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:17,788 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 00:09:17,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:17,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829645053] [2024-06-28 00:09:17,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829645053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:17,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:17,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:09:17,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261877841] [2024-06-28 00:09:17,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:17,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:09:17,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:17,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:09:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:09:17,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:17,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 93 transitions, 795 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:17,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:17,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:17,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:18,312 INFO L124 PetriNetUnfolderBase]: 209/450 cut-off events. [2024-06-28 00:09:18,312 INFO L125 PetriNetUnfolderBase]: For 18578/18578 co-relation queries the response was YES. [2024-06-28 00:09:18,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 450 events. 209/450 cut-off events. For 18578/18578 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2096 event pairs, 65 based on Foata normal form. 6/455 useless extension candidates. Maximal degree in co-relation 1909. Up to 307 conditions per place. [2024-06-28 00:09:18,315 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 73 selfloop transitions, 16 changer transitions 20/111 dead transitions. [2024-06-28 00:09:18,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 111 transitions, 1063 flow [2024-06-28 00:09:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 00:09:18,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3527777777777778 [2024-06-28 00:09:18,316 INFO L175 Difference]: Start difference. First operand has 167 places, 93 transitions, 795 flow. Second operand 12 states and 127 transitions. [2024-06-28 00:09:18,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 111 transitions, 1063 flow [2024-06-28 00:09:18,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 111 transitions, 1003 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:18,338 INFO L231 Difference]: Finished difference. Result has 162 places, 86 transitions, 719 flow [2024-06-28 00:09:18,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=719, PETRI_PLACES=162, PETRI_TRANSITIONS=86} [2024-06-28 00:09:18,338 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-06-28 00:09:18,338 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 86 transitions, 719 flow [2024-06-28 00:09:18,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:18,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:18,338 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 00:09:18,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 00:09:18,338 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 00:09:18,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash 239298505, now seen corresponding path program 6 times [2024-06-28 00:09:18,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:18,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506325034] [2024-06-28 00:09:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:20,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:20,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506325034] [2024-06-28 00:09:20,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506325034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:20,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:20,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:20,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592302258] [2024-06-28 00:09:20,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:20,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:20,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:20,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:20,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 86 transitions, 719 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 00:09:20,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:20,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:20,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:21,024 INFO L124 PetriNetUnfolderBase]: 193/415 cut-off events. [2024-06-28 00:09:21,024 INFO L125 PetriNetUnfolderBase]: For 16571/16571 co-relation queries the response was YES. [2024-06-28 00:09:21,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 415 events. 193/415 cut-off events. For 16571/16571 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1865 event pairs, 58 based on Foata normal form. 6/420 useless extension candidates. Maximal degree in co-relation 1738. Up to 322 conditions per place. [2024-06-28 00:09:21,026 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 72 selfloop transitions, 21 changer transitions 11/106 dead transitions. [2024-06-28 00:09:21,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 106 transitions, 987 flow [2024-06-28 00:09:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:09:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:09:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 143 transitions. [2024-06-28 00:09:21,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3404761904761905 [2024-06-28 00:09:21,027 INFO L175 Difference]: Start difference. First operand has 162 places, 86 transitions, 719 flow. Second operand 14 states and 143 transitions. [2024-06-28 00:09:21,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 106 transitions, 987 flow [2024-06-28 00:09:21,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 106 transitions, 933 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 00:09:21,048 INFO L231 Difference]: Finished difference. Result has 152 places, 83 transitions, 690 flow [2024-06-28 00:09:21,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=690, PETRI_PLACES=152, PETRI_TRANSITIONS=83} [2024-06-28 00:09:21,048 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-06-28 00:09:21,048 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 83 transitions, 690 flow [2024-06-28 00:09:21,049 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 00:09:21,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:21,049 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 00:09:21,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 00:09:21,049 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 00:09:21,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:21,049 INFO L85 PathProgramCache]: Analyzing trace with hash 639424333, now seen corresponding path program 7 times [2024-06-28 00:09:21,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:21,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691283159] [2024-06-28 00:09:21,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:21,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:23,030 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 00:09:23,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:23,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691283159] [2024-06-28 00:09:23,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691283159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:23,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:23,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:23,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796665071] [2024-06-28 00:09:23,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:23,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:23,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:23,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:23,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:23,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:23,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 83 transitions, 690 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 00:09:23,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:23,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:23,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:23,604 INFO L124 PetriNetUnfolderBase]: 183/397 cut-off events. [2024-06-28 00:09:23,604 INFO L125 PetriNetUnfolderBase]: For 13567/13567 co-relation queries the response was YES. [2024-06-28 00:09:23,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 397 events. 183/397 cut-off events. For 13567/13567 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1764 event pairs, 58 based on Foata normal form. 6/402 useless extension candidates. Maximal degree in co-relation 1644. Up to 312 conditions per place. [2024-06-28 00:09:23,606 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 68 selfloop transitions, 17 changer transitions 13/100 dead transitions. [2024-06-28 00:09:23,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 100 transitions, 936 flow [2024-06-28 00:09:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 00:09:23,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-28 00:09:23,606 INFO L175 Difference]: Start difference. First operand has 152 places, 83 transitions, 690 flow. Second operand 12 states and 126 transitions. [2024-06-28 00:09:23,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 100 transitions, 936 flow [2024-06-28 00:09:23,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 100 transitions, 888 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 00:09:23,623 INFO L231 Difference]: Finished difference. Result has 146 places, 79 transitions, 651 flow [2024-06-28 00:09:23,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=651, PETRI_PLACES=146, PETRI_TRANSITIONS=79} [2024-06-28 00:09:23,623 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 117 predicate places. [2024-06-28 00:09:23,623 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 79 transitions, 651 flow [2024-06-28 00:09:23,623 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 00:09:23,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:23,623 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 00:09:23,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 00:09:23,623 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 00:09:23,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:23,623 INFO L85 PathProgramCache]: Analyzing trace with hash -831629117, now seen corresponding path program 8 times [2024-06-28 00:09:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:23,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925158479] [2024-06-28 00:09:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:23,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:25,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:25,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925158479] [2024-06-28 00:09:25,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925158479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:25,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:25,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:25,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081937403] [2024-06-28 00:09:25,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:25,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:25,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:25,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:25,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:25,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 79 transitions, 651 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 00:09:25,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:25,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:25,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:25,998 INFO L124 PetriNetUnfolderBase]: 174/378 cut-off events. [2024-06-28 00:09:25,998 INFO L125 PetriNetUnfolderBase]: For 12457/12457 co-relation queries the response was YES. [2024-06-28 00:09:25,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 378 events. 174/378 cut-off events. For 12457/12457 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1633 event pairs, 56 based on Foata normal form. 6/383 useless extension candidates. Maximal degree in co-relation 1556. Up to 294 conditions per place. [2024-06-28 00:09:26,000 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 63 selfloop transitions, 14 changer transitions 17/96 dead transitions. [2024-06-28 00:09:26,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 96 transitions, 885 flow [2024-06-28 00:09:26,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:26,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:09:26,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-28 00:09:26,001 INFO L175 Difference]: Start difference. First operand has 146 places, 79 transitions, 651 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:09:26,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 96 transitions, 885 flow [2024-06-28 00:09:26,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 96 transitions, 843 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:26,016 INFO L231 Difference]: Finished difference. Result has 139 places, 73 transitions, 595 flow [2024-06-28 00:09:26,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=595, PETRI_PLACES=139, PETRI_TRANSITIONS=73} [2024-06-28 00:09:26,017 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-06-28 00:09:26,017 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 73 transitions, 595 flow [2024-06-28 00:09:26,017 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 00:09:26,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:26,017 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 00:09:26,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 00:09:26,017 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 00:09:26,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash 860290695, now seen corresponding path program 9 times [2024-06-28 00:09:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:26,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825754057] [2024-06-28 00:09:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:26,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:27,929 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 00:09:27,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:27,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825754057] [2024-06-28 00:09:27,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825754057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:27,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:27,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:27,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173415298] [2024-06-28 00:09:27,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:27,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:27,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:28,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:28,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 73 transitions, 595 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 00:09:28,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:28,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:28,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:28,431 INFO L124 PetriNetUnfolderBase]: 160/348 cut-off events. [2024-06-28 00:09:28,431 INFO L125 PetriNetUnfolderBase]: For 10869/10869 co-relation queries the response was YES. [2024-06-28 00:09:28,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1492 conditions, 348 events. 160/348 cut-off events. For 10869/10869 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1484 event pairs, 56 based on Foata normal form. 6/353 useless extension candidates. Maximal degree in co-relation 1426. Up to 259 conditions per place. [2024-06-28 00:09:28,433 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 61 selfloop transitions, 15 changer transitions 11/89 dead transitions. [2024-06-28 00:09:28,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 89 transitions, 813 flow [2024-06-28 00:09:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 00:09:28,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-28 00:09:28,433 INFO L175 Difference]: Start difference. First operand has 139 places, 73 transitions, 595 flow. Second operand 12 states and 123 transitions. [2024-06-28 00:09:28,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 89 transitions, 813 flow [2024-06-28 00:09:28,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 89 transitions, 773 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:28,446 INFO L231 Difference]: Finished difference. Result has 130 places, 70 transitions, 566 flow [2024-06-28 00:09:28,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=566, PETRI_PLACES=130, PETRI_TRANSITIONS=70} [2024-06-28 00:09:28,447 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-28 00:09:28,447 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 70 transitions, 566 flow [2024-06-28 00:09:28,447 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 00:09:28,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:28,447 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 00:09:28,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 00:09:28,447 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 00:09:28,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:28,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1963363681, now seen corresponding path program 10 times [2024-06-28 00:09:28,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:28,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319617790] [2024-06-28 00:09:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:28,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:30,314 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 00:09:30,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:30,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319617790] [2024-06-28 00:09:30,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319617790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:30,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:30,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22358275] [2024-06-28 00:09:30,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:30,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:30,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:30,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:30,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:30,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 70 transitions, 566 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 00:09:30,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:30,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:30,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:30,801 INFO L124 PetriNetUnfolderBase]: 150/330 cut-off events. [2024-06-28 00:09:30,801 INFO L125 PetriNetUnfolderBase]: For 8479/8479 co-relation queries the response was YES. [2024-06-28 00:09:30,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 330 events. 150/330 cut-off events. For 8479/8479 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1373 event pairs, 56 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 1328. Up to 249 conditions per place. [2024-06-28 00:09:30,803 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 58 selfloop transitions, 14 changer transitions 12/86 dead transitions. [2024-06-28 00:09:30,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 86 transitions, 778 flow [2024-06-28 00:09:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 00:09:30,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-28 00:09:30,804 INFO L175 Difference]: Start difference. First operand has 130 places, 70 transitions, 566 flow. Second operand 12 states and 123 transitions. [2024-06-28 00:09:30,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 86 transitions, 778 flow [2024-06-28 00:09:30,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 86 transitions, 736 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:09:30,814 INFO L231 Difference]: Finished difference. Result has 125 places, 66 transitions, 522 flow [2024-06-28 00:09:30,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=522, PETRI_PLACES=125, PETRI_TRANSITIONS=66} [2024-06-28 00:09:30,815 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-28 00:09:30,815 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 66 transitions, 522 flow [2024-06-28 00:09:30,815 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 00:09:30,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:30,815 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 00:09:30,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 00:09:30,815 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 00:09:30,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:30,816 INFO L85 PathProgramCache]: Analyzing trace with hash -99362273, now seen corresponding path program 11 times [2024-06-28 00:09:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:30,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825257096] [2024-06-28 00:09:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:30,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:32,810 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 00:09:32,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:32,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825257096] [2024-06-28 00:09:32,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825257096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:32,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:32,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:32,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694789606] [2024-06-28 00:09:32,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:32,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:32,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:32,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:32,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:32,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 66 transitions, 522 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 00:09:32,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:32,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:32,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:33,275 INFO L124 PetriNetUnfolderBase]: 141/311 cut-off events. [2024-06-28 00:09:33,275 INFO L125 PetriNetUnfolderBase]: For 7595/7595 co-relation queries the response was YES. [2024-06-28 00:09:33,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 311 events. 141/311 cut-off events. For 7595/7595 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1248 event pairs, 54 based on Foata normal form. 6/316 useless extension candidates. Maximal degree in co-relation 1238. Up to 231 conditions per place. [2024-06-28 00:09:33,277 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 55 selfloop transitions, 10 changer transitions 15/82 dead transitions. [2024-06-28 00:09:33,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 82 transitions, 722 flow [2024-06-28 00:09:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:33,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 00:09:33,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3388888888888889 [2024-06-28 00:09:33,277 INFO L175 Difference]: Start difference. First operand has 125 places, 66 transitions, 522 flow. Second operand 12 states and 122 transitions. [2024-06-28 00:09:33,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 82 transitions, 722 flow [2024-06-28 00:09:33,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 82 transitions, 681 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 00:09:33,286 INFO L231 Difference]: Finished difference. Result has 118 places, 61 transitions, 464 flow [2024-06-28 00:09:33,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=464, PETRI_PLACES=118, PETRI_TRANSITIONS=61} [2024-06-28 00:09:33,286 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-28 00:09:33,286 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 61 transitions, 464 flow [2024-06-28 00:09:33,287 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 00:09:33,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:33,287 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 00:09:33,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 00:09:33,287 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 00:09:33,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1584491965, now seen corresponding path program 12 times [2024-06-28 00:09:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593029289] [2024-06-28 00:09:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:33,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:35,255 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 00:09:35,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:35,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593029289] [2024-06-28 00:09:35,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593029289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:35,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:35,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:35,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277304634] [2024-06-28 00:09:35,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:35,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:35,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:35,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:35,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:35,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:35,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 61 transitions, 464 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 00:09:35,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:35,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:35,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:35,766 INFO L124 PetriNetUnfolderBase]: 128/284 cut-off events. [2024-06-28 00:09:35,767 INFO L125 PetriNetUnfolderBase]: For 6399/6399 co-relation queries the response was YES. [2024-06-28 00:09:35,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 284 events. 128/284 cut-off events. For 6399/6399 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1112 event pairs, 50 based on Foata normal form. 6/289 useless extension candidates. Maximal degree in co-relation 1108. Up to 194 conditions per place. [2024-06-28 00:09:35,768 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 51 selfloop transitions, 14 changer transitions 10/77 dead transitions. [2024-06-28 00:09:35,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 77 transitions, 650 flow [2024-06-28 00:09:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:09:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:09:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2024-06-28 00:09:35,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33076923076923076 [2024-06-28 00:09:35,769 INFO L175 Difference]: Start difference. First operand has 118 places, 61 transitions, 464 flow. Second operand 13 states and 129 transitions. [2024-06-28 00:09:35,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 77 transitions, 650 flow [2024-06-28 00:09:35,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 77 transitions, 613 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 00:09:35,776 INFO L231 Difference]: Finished difference. Result has 110 places, 57 transitions, 430 flow [2024-06-28 00:09:35,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=430, PETRI_PLACES=110, PETRI_TRANSITIONS=57} [2024-06-28 00:09:35,777 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-28 00:09:35,777 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 57 transitions, 430 flow [2024-06-28 00:09:35,777 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 00:09:35,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:35,777 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 00:09:35,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 00:09:35,777 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 00:09:35,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:35,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1584232495, now seen corresponding path program 13 times [2024-06-28 00:09:35,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:35,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736497380] [2024-06-28 00:09:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:35,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:37,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:37,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736497380] [2024-06-28 00:09:37,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736497380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:37,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:37,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191624482] [2024-06-28 00:09:37,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:37,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:37,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:37,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:37,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:37,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 57 transitions, 430 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 00:09:37,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:37,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:37,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:38,430 INFO L124 PetriNetUnfolderBase]: 116/264 cut-off events. [2024-06-28 00:09:38,431 INFO L125 PetriNetUnfolderBase]: For 4905/4905 co-relation queries the response was YES. [2024-06-28 00:09:38,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 264 events. 116/264 cut-off events. For 4905/4905 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 997 event pairs, 52 based on Foata normal form. 6/269 useless extension candidates. Maximal degree in co-relation 1022. Up to 190 conditions per place. [2024-06-28 00:09:38,432 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 43 selfloop transitions, 9 changer transitions 20/74 dead transitions. [2024-06-28 00:09:38,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 74 transitions, 612 flow [2024-06-28 00:09:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:09:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:09:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 137 transitions. [2024-06-28 00:09:38,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3261904761904762 [2024-06-28 00:09:38,433 INFO L175 Difference]: Start difference. First operand has 110 places, 57 transitions, 430 flow. Second operand 14 states and 137 transitions. [2024-06-28 00:09:38,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 74 transitions, 612 flow [2024-06-28 00:09:38,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 74 transitions, 572 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-28 00:09:38,438 INFO L231 Difference]: Finished difference. Result has 106 places, 47 transitions, 334 flow [2024-06-28 00:09:38,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=334, PETRI_PLACES=106, PETRI_TRANSITIONS=47} [2024-06-28 00:09:38,439 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-28 00:09:38,439 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 47 transitions, 334 flow [2024-06-28 00:09:38,439 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 00:09:38,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:38,439 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 00:09:38,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 00:09:38,439 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 00:09:38,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:38,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1269244595, now seen corresponding path program 14 times [2024-06-28 00:09:38,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:38,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136583017] [2024-06-28 00:09:38,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:38,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:40,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:40,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136583017] [2024-06-28 00:09:40,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136583017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:40,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:40,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:40,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149938366] [2024-06-28 00:09:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:40,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:40,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:40,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:40,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:40,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:40,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 47 transitions, 334 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 00:09:40,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:40,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:40,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:40,634 INFO L124 PetriNetUnfolderBase]: 100/232 cut-off events. [2024-06-28 00:09:40,634 INFO L125 PetriNetUnfolderBase]: For 4207/4207 co-relation queries the response was YES. [2024-06-28 00:09:40,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 232 events. 100/232 cut-off events. For 4207/4207 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 817 event pairs, 54 based on Foata normal form. 6/237 useless extension candidates. Maximal degree in co-relation 877. Up to 164 conditions per place. [2024-06-28 00:09:40,635 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 34 selfloop transitions, 3 changer transitions 25/64 dead transitions. [2024-06-28 00:09:40,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 64 transitions, 496 flow [2024-06-28 00:09:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:09:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:09:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 124 transitions. [2024-06-28 00:09:40,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31794871794871793 [2024-06-28 00:09:40,636 INFO L175 Difference]: Start difference. First operand has 106 places, 47 transitions, 334 flow. Second operand 13 states and 124 transitions. [2024-06-28 00:09:40,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 64 transitions, 496 flow [2024-06-28 00:09:40,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 64 transitions, 459 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 00:09:40,639 INFO L231 Difference]: Finished difference. Result has 92 places, 38 transitions, 259 flow [2024-06-28 00:09:40,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=259, PETRI_PLACES=92, PETRI_TRANSITIONS=38} [2024-06-28 00:09:40,640 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-28 00:09:40,640 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 38 transitions, 259 flow [2024-06-28 00:09:40,640 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 00:09:40,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:40,640 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 00:09:40,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 00:09:40,640 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 00:09:40,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:40,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1142075553, now seen corresponding path program 15 times [2024-06-28 00:09:40,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:40,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770236055] [2024-06-28 00:09:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:40,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:43,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:43,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770236055] [2024-06-28 00:09:43,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770236055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:43,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:43,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:43,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976417902] [2024-06-28 00:09:43,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:43,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:43,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:43,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:43,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:43,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:09:43,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 38 transitions, 259 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:43,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:43,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:09:43,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:43,490 INFO L124 PetriNetUnfolderBase]: 82/190 cut-off events. [2024-06-28 00:09:43,490 INFO L125 PetriNetUnfolderBase]: For 3315/3319 co-relation queries the response was YES. [2024-06-28 00:09:43,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 190 events. 82/190 cut-off events. For 3315/3319 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 613 event pairs, 24 based on Foata normal form. 7/196 useless extension candidates. Maximal degree in co-relation 700. Up to 76 conditions per place. [2024-06-28 00:09:43,491 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 25 selfloop transitions, 14 changer transitions 9/50 dead transitions. [2024-06-28 00:09:43,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 50 transitions, 383 flow [2024-06-28 00:09:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:43,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:43,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:09:43,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 00:09:43,492 INFO L175 Difference]: Start difference. First operand has 92 places, 38 transitions, 259 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:09:43,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 50 transitions, 383 flow [2024-06-28 00:09:43,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 50 transitions, 351 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-28 00:09:43,494 INFO L231 Difference]: Finished difference. Result has 73 places, 33 transitions, 217 flow [2024-06-28 00:09:43,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=217, PETRI_PLACES=73, PETRI_TRANSITIONS=33} [2024-06-28 00:09:43,495 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-28 00:09:43,495 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 33 transitions, 217 flow [2024-06-28 00:09:43,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:43,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:43,495 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 00:09:43,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 00:09:43,495 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 00:09:43,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:43,495 INFO L85 PathProgramCache]: Analyzing trace with hash -127397363, now seen corresponding path program 16 times [2024-06-28 00:09:43,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:43,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909101242] [2024-06-28 00:09:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:43,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:45,649 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 00:09:45,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:45,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909101242] [2024-06-28 00:09:45,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909101242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:45,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:45,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:45,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934862909] [2024-06-28 00:09:45,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:45,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:45,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:09:45,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 33 transitions, 217 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:45,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:45,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:09:45,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:46,042 INFO L124 PetriNetUnfolderBase]: 67/154 cut-off events. [2024-06-28 00:09:46,042 INFO L125 PetriNetUnfolderBase]: For 1824/1824 co-relation queries the response was YES. [2024-06-28 00:09:46,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 154 events. 67/154 cut-off events. For 1824/1824 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 453 event pairs, 19 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 550. Up to 72 conditions per place. [2024-06-28 00:09:46,043 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 22 selfloop transitions, 8 changer transitions 14/46 dead transitions. [2024-06-28 00:09:46,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 46 transitions, 333 flow [2024-06-28 00:09:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:09:46,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 00:09:46,043 INFO L175 Difference]: Start difference. First operand has 73 places, 33 transitions, 217 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:09:46,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 46 transitions, 333 flow [2024-06-28 00:09:46,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 46 transitions, 265 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-28 00:09:46,045 INFO L231 Difference]: Finished difference. Result has 64 places, 28 transitions, 145 flow [2024-06-28 00:09:46,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=145, PETRI_PLACES=64, PETRI_TRANSITIONS=28} [2024-06-28 00:09:46,045 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-28 00:09:46,046 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 28 transitions, 145 flow [2024-06-28 00:09:46,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:46,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:46,046 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 00:09:46,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 00:09:46,046 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 00:09:46,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:46,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1623057227, now seen corresponding path program 17 times [2024-06-28 00:09:46,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:46,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13282657] [2024-06-28 00:09:46,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:46,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:48,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:48,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13282657] [2024-06-28 00:09:48,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13282657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:48,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:48,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:09:48,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536875463] [2024-06-28 00:09:48,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:48,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:09:48,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:09:48,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:09:48,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:09:48,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 28 transitions, 145 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:48,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:48,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:09:48,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:48,683 INFO L124 PetriNetUnfolderBase]: 57/132 cut-off events. [2024-06-28 00:09:48,683 INFO L125 PetriNetUnfolderBase]: For 1734/1734 co-relation queries the response was YES. [2024-06-28 00:09:48,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 132 events. 57/132 cut-off events. For 1734/1734 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 355 event pairs, 15 based on Foata normal form. 6/137 useless extension candidates. Maximal degree in co-relation 440. Up to 62 conditions per place. [2024-06-28 00:09:48,684 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 20 selfloop transitions, 8 changer transitions 12/42 dead transitions. [2024-06-28 00:09:48,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 42 transitions, 255 flow [2024-06-28 00:09:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 00:09:48,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-28 00:09:48,684 INFO L175 Difference]: Start difference. First operand has 64 places, 28 transitions, 145 flow. Second operand 11 states and 116 transitions. [2024-06-28 00:09:48,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 42 transitions, 255 flow [2024-06-28 00:09:48,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 229 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:48,686 INFO L231 Difference]: Finished difference. Result has 57 places, 24 transitions, 119 flow [2024-06-28 00:09:48,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=119, PETRI_PLACES=57, PETRI_TRANSITIONS=24} [2024-06-28 00:09:48,686 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-28 00:09:48,686 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 24 transitions, 119 flow [2024-06-28 00:09:48,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:48,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:48,686 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 00:09:48,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 00:09:48,686 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 00:09:48,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:48,686 INFO L85 PathProgramCache]: Analyzing trace with hash -11753903, now seen corresponding path program 18 times [2024-06-28 00:09:48,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:48,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596204322] [2024-06-28 00:09:48,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:48,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:50,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:50,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596204322] [2024-06-28 00:09:50,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596204322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:50,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:50,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:50,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155127364] [2024-06-28 00:09:50,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:50,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:50,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:50,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:50,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:50,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-28 00:09:50,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 24 transitions, 119 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 00:09:50,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:50,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-28 00:09:50,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:51,160 INFO L124 PetriNetUnfolderBase]: 48/113 cut-off events. [2024-06-28 00:09:51,160 INFO L125 PetriNetUnfolderBase]: For 1018/1018 co-relation queries the response was YES. [2024-06-28 00:09:51,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 113 events. 48/113 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 271 event pairs, 15 based on Foata normal form. 6/118 useless extension candidates. Maximal degree in co-relation 364. Up to 52 conditions per place. [2024-06-28 00:09:51,161 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 17 selfloop transitions, 7 changer transitions 11/37 dead transitions. [2024-06-28 00:09:51,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 37 transitions, 217 flow [2024-06-28 00:09:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-28 00:09:51,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090909090909091 [2024-06-28 00:09:51,161 INFO L175 Difference]: Start difference. First operand has 57 places, 24 transitions, 119 flow. Second operand 11 states and 102 transitions. [2024-06-28 00:09:51,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 37 transitions, 217 flow [2024-06-28 00:09:51,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 37 transitions, 193 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:51,162 INFO L231 Difference]: Finished difference. Result has 51 places, 21 transitions, 98 flow [2024-06-28 00:09:51,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=98, PETRI_PLACES=51, PETRI_TRANSITIONS=21} [2024-06-28 00:09:51,163 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-28 00:09:51,163 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 21 transitions, 98 flow [2024-06-28 00:09:51,163 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 00:09:51,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:51,163 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 00:09:51,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 00:09:51,163 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 00:09:51,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash -11494433, now seen corresponding path program 19 times [2024-06-28 00:09:51,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:51,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362783703] [2024-06-28 00:09:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:51,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:53,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:53,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362783703] [2024-06-28 00:09:53,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362783703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:53,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:53,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:09:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774047948] [2024-06-28 00:09:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:53,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:09:53,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:09:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:09:53,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-28 00:09:53,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 21 transitions, 98 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:53,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:53,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-28 00:09:53,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:53,879 INFO L124 PetriNetUnfolderBase]: 23/62 cut-off events. [2024-06-28 00:09:53,879 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-06-28 00:09:53,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 62 events. 23/62 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 162. Up to 24 conditions per place. [2024-06-28 00:09:53,879 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-28 00:09:53,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 29 transitions, 148 flow [2024-06-28 00:09:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-28 00:09:53,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-28 00:09:53,880 INFO L175 Difference]: Start difference. First operand has 51 places, 21 transitions, 98 flow. Second operand 11 states and 105 transitions. [2024-06-28 00:09:53,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 29 transitions, 148 flow [2024-06-28 00:09:53,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 118 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-28 00:09:53,880 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2024-06-28 00:09:53,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2024-06-28 00:09:53,881 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2024-06-28 00:09:53,881 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2024-06-28 00:09:53,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:53,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 00:09:53,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 00:09:53,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 00:09:53,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 00:09:53,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 00:09:53,884 INFO L445 BasicCegarLoop]: Path program histogram: [49, 25, 22, 19, 17, 14, 11, 6, 6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:53,886 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:09:53,886 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:09:53,889 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:09:53,889 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:09:53,889 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:09:53 BasicIcfg [2024-06-28 00:09:53,889 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:09:53,890 INFO L158 Benchmark]: Toolchain (without parser) took 438347.78ms. Allocated memory was 151.0MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 120.0MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 984.4MB. Max. memory is 16.1GB. [2024-06-28 00:09:53,890 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:09:53,890 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:09:53,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 622.80ms. Allocated memory is still 151.0MB. Free memory was 120.0MB in the beginning and 87.5MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-28 00:09:53,891 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.07ms. Allocated memory is still 151.0MB. Free memory was 87.5MB in the beginning and 81.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-28 00:09:53,891 INFO L158 Benchmark]: Boogie Preprocessor took 90.25ms. Allocated memory is still 151.0MB. Free memory was 81.2MB in the beginning and 77.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:09:53,891 INFO L158 Benchmark]: RCFGBuilder took 768.02ms. Allocated memory is still 151.0MB. Free memory was 77.0MB in the beginning and 69.7MB in the end (delta: 7.3MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-06-28 00:09:53,891 INFO L158 Benchmark]: TraceAbstraction took 436780.32ms. Allocated memory was 151.0MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 69.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 934.9MB. Max. memory is 16.1GB. [2024-06-28 00:09:53,892 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 622.80ms. Allocated memory is still 151.0MB. Free memory was 120.0MB in the beginning and 87.5MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.07ms. Allocated memory is still 151.0MB. Free memory was 87.5MB in the beginning and 81.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.25ms. Allocated memory is still 151.0MB. Free memory was 81.2MB in the beginning and 77.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 768.02ms. Allocated memory is still 151.0MB. Free memory was 77.0MB in the beginning and 69.7MB in the end (delta: 7.3MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 436780.32ms. Allocated memory was 151.0MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 69.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 934.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 48 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 436.7s, OverallIterations: 200, TraceHistogramMax: 1, PathProgramHistogramMax: 49, EmptinessCheckTime: 0.0s, AutomataDifference: 132.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10289 SdHoareTripleChecker+Valid, 53.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8569 mSDsluCounter, 6134 SdHoareTripleChecker+Invalid, 46.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5002 mSDsCounter, 3034 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70927 IncrementalHoareTripleChecker+Invalid, 73961 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3034 mSolverCounterUnsat, 1132 mSDtfsCounter, 70927 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2166 GetRequests, 1 SyntacticMatches, 7 SemanticMatches, 2158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2997 ImplicationChecksByTransitivity, 64.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3021occurred in iteration=105, InterpolantAutomatonStates: 1960, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 299.4s InterpolantComputationTime, 3166 NumberOfCodeBlocks, 3166 NumberOfCodeBlocksAsserted, 200 NumberOfCheckSat, 2966 ConstructedInterpolants, 0 QuantifiedInterpolants, 141160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 200 InterpolantComputations, 200 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:09:53,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE