./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:19:17,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:19:17,203 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:19:17,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:19:17,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:19:17,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:19:17,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:19:17,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:19:17,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:19:17,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:19:17,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:19:17,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:19:17,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:19:17,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:19:17,241 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:19:17,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:19:17,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:19:17,242 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:19:17,242 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:19:17,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:19:17,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:19:17,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:19:17,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:19:17,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:19:17,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:19:17,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:19:17,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:19:17,244 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:19:17,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:19:17,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:19:17,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:19:17,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:19:17,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:19:17,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:19:17,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:19:17,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:19:17,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:19:17,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:19:17,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:19:17,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:19:17,247 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:19:17,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:19:17,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:19:17,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:19:17,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:19:17,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:19:17,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:19:17,495 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:19:17,495 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:19:17,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-27 23:19:17,573 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:19:17,574 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:19:17,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 23:19:18,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:19:18,826 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:19:18,826 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 23:19:18,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c135a8b4/c729980cb8904557961018ace6c44329/FLAGeee799620 [2024-06-27 23:19:19,159 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c135a8b4/c729980cb8904557961018ace6c44329 [2024-06-27 23:19:19,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:19:19,164 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:19:19,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:19:19,165 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:19:19,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:19:19,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:19:17" (1/2) ... [2024-06-27 23:19:19,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5763fff6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:19:19, skipping insertion in model container [2024-06-27 23:19:19,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:19:17" (1/2) ... [2024-06-27 23:19:19,174 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68ca3b04 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:19:19, skipping insertion in model container [2024-06-27 23:19:19,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:19:19" (2/2) ... [2024-06-27 23:19:19,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5763fff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19, skipping insertion in model container [2024-06-27 23:19:19,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:19:19" (2/2) ... [2024-06-27 23:19:19,175 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:19:19,198 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:19:19,199 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:19:19,199 INFO L97 edCorrectnessWitness]: Location invariant before [L815-L815] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:19:19,199 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:19:19,199 INFO L106 edCorrectnessWitness]: ghost_update [L813-L813] multithreaded = 1; [2024-06-27 23:19:19,237 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:19:19,519 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:19:19,529 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:19:19,702 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:19:19,729 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:19:19,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19 WrapperNode [2024-06-27 23:19:19,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:19:19,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:19:19,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:19:19,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:19:19,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,801 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-27 23:19:19,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:19:19,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:19:19,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:19:19,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:19:19,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,825 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,843 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]. [2024-06-27 23:19:19,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:19:19,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:19:19,880 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:19:19,880 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:19:19,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:19:19,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:19:19,906 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) [2024-06-27 23:19:19,923 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 [2024-06-27 23:19:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:19:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:19:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:19:19,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:19:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:19:19,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:19:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:19:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:19:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:19:19,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:19:19,936 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:19:20,048 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:19:20,050 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:19:20,567 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:19:20,567 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:19:20,692 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:19:20,693 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:19:20,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:19:20 BoogieIcfgContainer [2024-06-27 23:19:20,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:19:20,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:19:20,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:19:20,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:19:20,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:19:17" (1/4) ... [2024-06-27 23:19:20,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e4f918 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:19:20, skipping insertion in model container [2024-06-27 23:19:20,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:19:19" (2/4) ... [2024-06-27 23:19:20,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e4f918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:19:20, skipping insertion in model container [2024-06-27 23:19:20,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (3/4) ... [2024-06-27 23:19:20,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e4f918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:19:20, skipping insertion in model container [2024-06-27 23:19:20,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:19:20" (4/4) ... [2024-06-27 23:19:20,703 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 23:19:20,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:19:20,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:19:20,717 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:19:20,755 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:19:20,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 23:19:20,810 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-27 23:19:20,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:19:20,812 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 38 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. [2024-06-27 23:19:20,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 23:19:20,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-27 23:19:20,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:19:20,834 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;@c6498f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:19:20,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:19:20,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:19:20,838 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:19:20,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:19:20,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:20,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:19:20,840 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)] === [2024-06-27 23:19:20,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash 330355608, now seen corresponding path program 1 times [2024-06-27 23:19:20,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:20,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147073754] [2024-06-27 23:19:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:20,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:22,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147073754] [2024-06-27 23:19:22,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147073754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:22,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:22,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:19:22,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508505000] [2024-06-27 23:19:22,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:22,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:19:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:22,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:19:22,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:19:22,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-27 23:19:22,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:22,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:22,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-27 23:19:22,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:22,243 INFO L124 PetriNetUnfolderBase]: 131/256 cut-off events. [2024-06-27 23:19:22,243 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 23:19:22,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 256 events. 131/256 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 939 event pairs, 75 based on Foata normal form. 1/251 useless extension candidates. Maximal degree in co-relation 501. Up to 235 conditions per place. [2024-06-27 23:19:22,248 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 20 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-27 23:19:22,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 111 flow [2024-06-27 23:19:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:19:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:19:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-27 23:19:22,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-27 23:19:22,259 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 55 transitions. [2024-06-27 23:19:22,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 111 flow [2024-06-27 23:19:22,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:19:22,263 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-27 23:19:22,264 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} [2024-06-27 23:19:22,267 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-27 23:19:22,268 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-27 23:19:22,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:22,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:22,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:22,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:19:22,269 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)] === [2024-06-27 23:19:22,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:22,269 INFO L85 PathProgramCache]: Analyzing trace with hash -355808329, now seen corresponding path program 1 times [2024-06-27 23:19:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:22,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801900665] [2024-06-27 23:19:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:22,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:23,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:23,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801900665] [2024-06-27 23:19:23,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801900665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:23,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:23,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:19:23,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241973650] [2024-06-27 23:19:23,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:23,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:19:23,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:19:23,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:19:23,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-27 23:19:23,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:23,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:23,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-27 23:19:23,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:23,180 INFO L124 PetriNetUnfolderBase]: 128/256 cut-off events. [2024-06-27 23:19:23,180 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-06-27 23:19:23,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 256 events. 128/256 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 925 event pairs, 57 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 567. Up to 221 conditions per place. [2024-06-27 23:19:23,186 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 24 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-27 23:19:23,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 153 flow [2024-06-27 23:19:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:19:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:19:23,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-06-27 23:19:23,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-06-27 23:19:23,188 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 71 transitions. [2024-06-27 23:19:23,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 153 flow [2024-06-27 23:19:23,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:19:23,192 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-27 23:19:23,192 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} [2024-06-27 23:19:23,193 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-27 23:19:23,193 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-27 23:19:23,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:23,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:23,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:23,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:19:23,195 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)] === [2024-06-27 23:19:23,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1665613782, now seen corresponding path program 1 times [2024-06-27 23:19:23,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:23,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609634960] [2024-06-27 23:19:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:23,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:24,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:24,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609634960] [2024-06-27 23:19:24,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609634960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:24,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:24,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:24,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628299266] [2024-06-27 23:19:24,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:24,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:24,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:24,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:24,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:19:24,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 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) [2024-06-27 23:19:24,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:24,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:19:24,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:24,740 INFO L124 PetriNetUnfolderBase]: 153/295 cut-off events. [2024-06-27 23:19:24,740 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-06-27 23:19:24,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 295 events. 153/295 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1060 event pairs, 43 based on Foata normal form. 2/295 useless extension candidates. Maximal degree in co-relation 730. Up to 246 conditions per place. [2024-06-27 23:19:24,742 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 33 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-27 23:19:24,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 236 flow [2024-06-27 23:19:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-27 23:19:24,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-06-27 23:19:24,744 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 7 states and 101 transitions. [2024-06-27 23:19:24,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 236 flow [2024-06-27 23:19:24,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 224 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 23:19:24,745 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 134 flow [2024-06-27 23:19:24,745 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=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=134, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-06-27 23:19:24,746 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-27 23:19:24,746 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 134 flow [2024-06-27 23:19:24,746 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) [2024-06-27 23:19:24,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:24,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:24,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:19:24,747 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)] === [2024-06-27 23:19:24,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:24,747 INFO L85 PathProgramCache]: Analyzing trace with hash 94420822, now seen corresponding path program 1 times [2024-06-27 23:19:24,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:24,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241126452] [2024-06-27 23:19:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:24,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:25,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:25,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241126452] [2024-06-27 23:19:25,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241126452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:25,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:25,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570159725] [2024-06-27 23:19:25,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:25,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:25,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:25,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:25,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:26,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:19:26,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:26,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:26,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:19:26,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:26,221 INFO L124 PetriNetUnfolderBase]: 149/285 cut-off events. [2024-06-27 23:19:26,221 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2024-06-27 23:19:26,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 285 events. 149/285 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 998 event pairs, 24 based on Foata normal form. 4/287 useless extension candidates. Maximal degree in co-relation 791. Up to 220 conditions per place. [2024-06-27 23:19:26,223 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-27 23:19:26,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 256 flow [2024-06-27 23:19:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-27 23:19:26,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-27 23:19:26,224 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 134 flow. Second operand 7 states and 108 transitions. [2024-06-27 23:19:26,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 256 flow [2024-06-27 23:19:26,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 237 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:26,226 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 131 flow [2024-06-27 23:19:26,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2024-06-27 23:19:26,227 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-27 23:19:26,227 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 131 flow [2024-06-27 23:19:26,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:26,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:26,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:26,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:19:26,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:19:26,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:26,229 INFO L85 PathProgramCache]: Analyzing trace with hash -524096948, now seen corresponding path program 1 times [2024-06-27 23:19:26,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:26,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555018651] [2024-06-27 23:19:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:26,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:27,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:27,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555018651] [2024-06-27 23:19:27,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555018651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:27,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:27,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:19:27,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465020067] [2024-06-27 23:19:27,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:27,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:19:27,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:27,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:19:27,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:19:27,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:27,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 131 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) [2024-06-27 23:19:27,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:27,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:27,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:27,492 INFO L124 PetriNetUnfolderBase]: 174/315 cut-off events. [2024-06-27 23:19:27,493 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-06-27 23:19:27,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 315 events. 174/315 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1051 event pairs, 47 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 938. Up to 304 conditions per place. [2024-06-27 23:19:27,494 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 27 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2024-06-27 23:19:27,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 228 flow [2024-06-27 23:19:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:19:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:19:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-27 23:19:27,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:19:27,496 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 131 flow. Second operand 5 states and 60 transitions. [2024-06-27 23:19:27,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 228 flow [2024-06-27 23:19:27,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 202 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:27,498 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 154 flow [2024-06-27 23:19:27,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-06-27 23:19:27,498 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-27 23:19:27,499 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 154 flow [2024-06-27 23:19:27,499 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) [2024-06-27 23:19:27,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:27,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:27,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:19:27,499 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)] === [2024-06-27 23:19:27,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash 932865172, now seen corresponding path program 1 times [2024-06-27 23:19:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:27,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128400979] [2024-06-27 23:19:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:27,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:28,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128400979] [2024-06-27 23:19:28,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128400979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:28,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:28,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:19:28,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386919722] [2024-06-27 23:19:28,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:28,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:19:28,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:19:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:19:28,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:28,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 154 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) [2024-06-27 23:19:28,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:28,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:28,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:29,130 INFO L124 PetriNetUnfolderBase]: 168/306 cut-off events. [2024-06-27 23:19:29,131 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2024-06-27 23:19:29,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 306 events. 168/306 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1001 event pairs, 44 based on Foata normal form. 3/307 useless extension candidates. Maximal degree in co-relation 949. Up to 286 conditions per place. [2024-06-27 23:19:29,133 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 30 selfloop transitions, 10 changer transitions 0/42 dead transitions. [2024-06-27 23:19:29,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 258 flow [2024-06-27 23:19:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:19:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:19:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-27 23:19:29,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-27 23:19:29,135 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 154 flow. Second operand 6 states and 71 transitions. [2024-06-27 23:19:29,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 258 flow [2024-06-27 23:19:29,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 249 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:19:29,140 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 184 flow [2024-06-27 23:19:29,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-27 23:19:29,142 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-27 23:19:29,142 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 184 flow [2024-06-27 23:19:29,142 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) [2024-06-27 23:19:29,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:29,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:19:29,143 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)] === [2024-06-27 23:19:29,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1151671189, now seen corresponding path program 1 times [2024-06-27 23:19:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:29,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808011419] [2024-06-27 23:19:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:30,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808011419] [2024-06-27 23:19:30,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808011419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:30,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:30,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:19:30,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169338704] [2024-06-27 23:19:30,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:30,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:19:30,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:30,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:19:30,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:19:30,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:30,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 184 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) [2024-06-27 23:19:30,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:30,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:30,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:30,283 INFO L124 PetriNetUnfolderBase]: 180/327 cut-off events. [2024-06-27 23:19:30,284 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2024-06-27 23:19:30,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 327 events. 180/327 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1085 event pairs, 45 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 1090. Up to 303 conditions per place. [2024-06-27 23:19:30,285 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 13 changer transitions 0/48 dead transitions. [2024-06-27 23:19:30,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 332 flow [2024-06-27 23:19:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:19:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:19:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-27 23:19:30,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-27 23:19:30,287 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 184 flow. Second operand 6 states and 73 transitions. [2024-06-27 23:19:30,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 332 flow [2024-06-27 23:19:30,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 313 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:30,290 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 236 flow [2024-06-27 23:19:30,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-06-27 23:19:30,291 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-06-27 23:19:30,291 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 236 flow [2024-06-27 23:19:30,292 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) [2024-06-27 23:19:30,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:30,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:30,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:19:30,292 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)] === [2024-06-27 23:19:30,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash -372275389, now seen corresponding path program 2 times [2024-06-27 23:19:30,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:30,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283928888] [2024-06-27 23:19:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:31,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:31,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283928888] [2024-06-27 23:19:31,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283928888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:31,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:31,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:19:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542004400] [2024-06-27 23:19:31,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:31,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:19:31,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:31,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:19:31,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:19:31,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:31,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 236 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) [2024-06-27 23:19:31,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:31,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:31,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:31,334 INFO L124 PetriNetUnfolderBase]: 178/324 cut-off events. [2024-06-27 23:19:31,334 INFO L125 PetriNetUnfolderBase]: For 1032/1032 co-relation queries the response was YES. [2024-06-27 23:19:31,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 324 events. 178/324 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1073 event pairs, 44 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 1164. Up to 309 conditions per place. [2024-06-27 23:19:31,336 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 34 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-27 23:19:31,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 336 flow [2024-06-27 23:19:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:19:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:19:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-27 23:19:31,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:19:31,337 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 236 flow. Second operand 6 states and 69 transitions. [2024-06-27 23:19:31,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 336 flow [2024-06-27 23:19:31,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 321 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:19:31,339 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 246 flow [2024-06-27 23:19:31,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-27 23:19:31,340 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-27 23:19:31,340 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 246 flow [2024-06-27 23:19:31,340 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) [2024-06-27 23:19:31,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:31,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:31,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:19:31,341 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)] === [2024-06-27 23:19:31,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash -132746257, now seen corresponding path program 3 times [2024-06-27 23:19:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:31,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393001573] [2024-06-27 23:19:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:31,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:32,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:32,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393001573] [2024-06-27 23:19:32,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393001573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:32,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:32,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:19:32,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511691176] [2024-06-27 23:19:32,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:32,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:19:32,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:32,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:19:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:19:32,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:32,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 246 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) [2024-06-27 23:19:32,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:32,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:32,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:32,635 INFO L124 PetriNetUnfolderBase]: 176/321 cut-off events. [2024-06-27 23:19:32,635 INFO L125 PetriNetUnfolderBase]: For 1266/1266 co-relation queries the response was YES. [2024-06-27 23:19:32,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 321 events. 176/321 cut-off events. For 1266/1266 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1068 event pairs, 44 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1191. Up to 289 conditions per place. [2024-06-27 23:19:32,637 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 36 selfloop transitions, 16 changer transitions 0/54 dead transitions. [2024-06-27 23:19:32,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 397 flow [2024-06-27 23:19:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:19:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:19:32,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-27 23:19:32,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-27 23:19:32,638 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 246 flow. Second operand 6 states and 77 transitions. [2024-06-27 23:19:32,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 397 flow [2024-06-27 23:19:32,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 378 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:32,642 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 303 flow [2024-06-27 23:19:32,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-27 23:19:32,643 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-27 23:19:32,643 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 303 flow [2024-06-27 23:19:32,643 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) [2024-06-27 23:19:32,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:32,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:32,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:19:32,644 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)] === [2024-06-27 23:19:32,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1342071951, now seen corresponding path program 1 times [2024-06-27 23:19:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:32,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934180337] [2024-06-27 23:19:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:32,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:33,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:33,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934180337] [2024-06-27 23:19:33,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934180337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:33,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:33,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:33,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107359794] [2024-06-27 23:19:33,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:33,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:33,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:33,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:33,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:33,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 303 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) [2024-06-27 23:19:33,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:33,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:33,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:34,060 INFO L124 PetriNetUnfolderBase]: 183/334 cut-off events. [2024-06-27 23:19:34,060 INFO L125 PetriNetUnfolderBase]: For 1638/1638 co-relation queries the response was YES. [2024-06-27 23:19:34,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 334 events. 183/334 cut-off events. For 1638/1638 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1130 event pairs, 43 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 1330. Up to 311 conditions per place. [2024-06-27 23:19:34,063 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 43 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-27 23:19:34,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 57 transitions, 457 flow [2024-06-27 23:19:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:34,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-27 23:19:34,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-27 23:19:34,064 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 303 flow. Second operand 7 states and 80 transitions. [2024-06-27 23:19:34,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 57 transitions, 457 flow [2024-06-27 23:19:34,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 427 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 23:19:34,067 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 335 flow [2024-06-27 23:19:34,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-06-27 23:19:34,068 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-27 23:19:34,068 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 335 flow [2024-06-27 23:19:34,069 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) [2024-06-27 23:19:34,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:34,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:34,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:19:34,069 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)] === [2024-06-27 23:19:34,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1979692033, now seen corresponding path program 2 times [2024-06-27 23:19:34,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:34,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766612483] [2024-06-27 23:19:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:34,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:35,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:35,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766612483] [2024-06-27 23:19:35,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766612483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:35,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:35,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238525579] [2024-06-27 23:19:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:35,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:35,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:35,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:35,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 335 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) [2024-06-27 23:19:35,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:35,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:35,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:35,250 INFO L124 PetriNetUnfolderBase]: 191/347 cut-off events. [2024-06-27 23:19:35,251 INFO L125 PetriNetUnfolderBase]: For 2020/2020 co-relation queries the response was YES. [2024-06-27 23:19:35,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1492 conditions, 347 events. 191/347 cut-off events. For 2020/2020 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1181 event pairs, 45 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 1459. Up to 308 conditions per place. [2024-06-27 23:19:35,253 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 40 selfloop transitions, 19 changer transitions 0/61 dead transitions. [2024-06-27 23:19:35,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 525 flow [2024-06-27 23:19:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 23:19:35,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:19:35,254 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 335 flow. Second operand 8 states and 90 transitions. [2024-06-27 23:19:35,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 525 flow [2024-06-27 23:19:35,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 496 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:35,258 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 385 flow [2024-06-27 23:19:35,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=385, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2024-06-27 23:19:35,259 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2024-06-27 23:19:35,259 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 385 flow [2024-06-27 23:19:35,260 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) [2024-06-27 23:19:35,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:35,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:35,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:19:35,260 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)] === [2024-06-27 23:19:35,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:35,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1979691847, now seen corresponding path program 1 times [2024-06-27 23:19:35,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:35,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682278989] [2024-06-27 23:19:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:36,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:36,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682278989] [2024-06-27 23:19:36,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682278989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:36,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:36,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:36,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768158186] [2024-06-27 23:19:36,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:36,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:36,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:36,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:36,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:36,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 385 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) [2024-06-27 23:19:36,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:36,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:36,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:36,513 INFO L124 PetriNetUnfolderBase]: 199/360 cut-off events. [2024-06-27 23:19:36,513 INFO L125 PetriNetUnfolderBase]: For 2554/2554 co-relation queries the response was YES. [2024-06-27 23:19:36,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 360 events. 199/360 cut-off events. For 2554/2554 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1240 event pairs, 46 based on Foata normal form. 1/359 useless extension candidates. Maximal degree in co-relation 1587. Up to 324 conditions per place. [2024-06-27 23:19:36,515 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 48 selfloop transitions, 17 changer transitions 0/67 dead transitions. [2024-06-27 23:19:36,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 587 flow [2024-06-27 23:19:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-27 23:19:36,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:19:36,516 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 385 flow. Second operand 7 states and 84 transitions. [2024-06-27 23:19:36,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 587 flow [2024-06-27 23:19:36,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 560 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:36,520 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 440 flow [2024-06-27 23:19:36,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=440, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-27 23:19:36,521 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-27 23:19:36,521 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 440 flow [2024-06-27 23:19:36,521 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) [2024-06-27 23:19:36,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:36,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:36,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:19:36,521 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)] === [2024-06-27 23:19:36,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:36,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1201973953, now seen corresponding path program 3 times [2024-06-27 23:19:36,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:36,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536813338] [2024-06-27 23:19:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:36,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:37,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:37,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536813338] [2024-06-27 23:19:37,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536813338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:37,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:37,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:37,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238253016] [2024-06-27 23:19:37,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:37,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:37,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:37,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:37,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:37,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:37,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 440 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) [2024-06-27 23:19:37,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:37,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:37,612 INFO L124 PetriNetUnfolderBase]: 197/357 cut-off events. [2024-06-27 23:19:37,613 INFO L125 PetriNetUnfolderBase]: For 2908/2908 co-relation queries the response was YES. [2024-06-27 23:19:37,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 357 events. 197/357 cut-off events. For 2908/2908 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1229 event pairs, 44 based on Foata normal form. 1/356 useless extension candidates. Maximal degree in co-relation 1657. Up to 338 conditions per place. [2024-06-27 23:19:37,615 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2024-06-27 23:19:37,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 65 transitions, 580 flow [2024-06-27 23:19:37,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 23:19:37,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-27 23:19:37,616 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 440 flow. Second operand 7 states and 78 transitions. [2024-06-27 23:19:37,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 65 transitions, 580 flow [2024-06-27 23:19:37,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 65 transitions, 560 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 23:19:37,622 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 449 flow [2024-06-27 23:19:37,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-06-27 23:19:37,623 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-27 23:19:37,623 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 449 flow [2024-06-27 23:19:37,623 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) [2024-06-27 23:19:37,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:37,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:37,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:19:37,623 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)] === [2024-06-27 23:19:37,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1975050217, now seen corresponding path program 2 times [2024-06-27 23:19:37,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:37,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531850212] [2024-06-27 23:19:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:37,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:38,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:38,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531850212] [2024-06-27 23:19:38,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531850212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:38,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:38,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:38,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193224751] [2024-06-27 23:19:38,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:38,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:38,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:38,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:38,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:38,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 449 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) [2024-06-27 23:19:38,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:38,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:38,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:38,794 INFO L124 PetriNetUnfolderBase]: 200/362 cut-off events. [2024-06-27 23:19:38,794 INFO L125 PetriNetUnfolderBase]: For 3288/3288 co-relation queries the response was YES. [2024-06-27 23:19:38,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 362 events. 200/362 cut-off events. For 3288/3288 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1260 event pairs, 44 based on Foata normal form. 1/361 useless extension candidates. Maximal degree in co-relation 1717. Up to 336 conditions per place. [2024-06-27 23:19:38,797 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2024-06-27 23:19:38,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 68 transitions, 637 flow [2024-06-27 23:19:38,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 23:19:38,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-27 23:19:38,799 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 449 flow. Second operand 7 states and 81 transitions. [2024-06-27 23:19:38,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 68 transitions, 637 flow [2024-06-27 23:19:38,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 604 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:38,804 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 465 flow [2024-06-27 23:19:38,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=465, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2024-06-27 23:19:38,805 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-27 23:19:38,805 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 465 flow [2024-06-27 23:19:38,805 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) [2024-06-27 23:19:38,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:38,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:38,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:19:38,805 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)] === [2024-06-27 23:19:38,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:38,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1164698445, now seen corresponding path program 3 times [2024-06-27 23:19:38,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:38,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555358821] [2024-06-27 23:19:38,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:38,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:39,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:39,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555358821] [2024-06-27 23:19:39,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555358821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:39,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:39,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:39,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561812322] [2024-06-27 23:19:39,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:39,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:39,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:39,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:39,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:39,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 465 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) [2024-06-27 23:19:39,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:39,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:39,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:39,874 INFO L124 PetriNetUnfolderBase]: 198/359 cut-off events. [2024-06-27 23:19:39,874 INFO L125 PetriNetUnfolderBase]: For 3625/3625 co-relation queries the response was YES. [2024-06-27 23:19:39,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1769 conditions, 359 events. 198/359 cut-off events. For 3625/3625 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1244 event pairs, 44 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1727. Up to 340 conditions per place. [2024-06-27 23:19:39,876 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 53 selfloop transitions, 12 changer transitions 0/67 dead transitions. [2024-06-27 23:19:39,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 67 transitions, 609 flow [2024-06-27 23:19:39,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 23:19:39,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:19:39,878 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 465 flow. Second operand 8 states and 84 transitions. [2024-06-27 23:19:39,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 67 transitions, 609 flow [2024-06-27 23:19:39,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 67 transitions, 567 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:39,885 INFO L231 Difference]: Finished difference. Result has 79 places, 61 transitions, 452 flow [2024-06-27 23:19:39,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=452, PETRI_PLACES=79, PETRI_TRANSITIONS=61} [2024-06-27 23:19:39,886 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-06-27 23:19:39,886 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 61 transitions, 452 flow [2024-06-27 23:19:39,886 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) [2024-06-27 23:19:39,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:39,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:39,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:19:39,887 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)] === [2024-06-27 23:19:39,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:39,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1018178481, now seen corresponding path program 4 times [2024-06-27 23:19:39,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:39,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392450048] [2024-06-27 23:19:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:39,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:40,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:40,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392450048] [2024-06-27 23:19:40,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392450048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:40,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:40,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:40,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382410491] [2024-06-27 23:19:40,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:40,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:40,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:40,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:40,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:40,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 61 transitions, 452 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) [2024-06-27 23:19:40,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:40,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:40,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:41,177 INFO L124 PetriNetUnfolderBase]: 210/379 cut-off events. [2024-06-27 23:19:41,177 INFO L125 PetriNetUnfolderBase]: For 4221/4221 co-relation queries the response was YES. [2024-06-27 23:19:41,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1899 conditions, 379 events. 210/379 cut-off events. For 4221/4221 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1337 event pairs, 41 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1856. Up to 332 conditions per place. [2024-06-27 23:19:41,182 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 58 selfloop transitions, 22 changer transitions 0/82 dead transitions. [2024-06-27 23:19:41,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 82 transitions, 738 flow [2024-06-27 23:19:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:19:41,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-27 23:19:41,183 INFO L175 Difference]: Start difference. First operand has 79 places, 61 transitions, 452 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:19:41,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 82 transitions, 738 flow [2024-06-27 23:19:41,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 702 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:41,192 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 539 flow [2024-06-27 23:19:41,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=539, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-06-27 23:19:41,193 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-27 23:19:41,193 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 539 flow [2024-06-27 23:19:41,193 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) [2024-06-27 23:19:41,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:41,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:41,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:19:41,194 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)] === [2024-06-27 23:19:41,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:41,194 INFO L85 PathProgramCache]: Analyzing trace with hash 179022629, now seen corresponding path program 5 times [2024-06-27 23:19:41,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:41,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240677147] [2024-06-27 23:19:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:41,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:42,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:42,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240677147] [2024-06-27 23:19:42,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240677147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:42,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:42,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:42,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238643876] [2024-06-27 23:19:42,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:42,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:42,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:42,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:42,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 539 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) [2024-06-27 23:19:42,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:42,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:42,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:42,818 INFO L124 PetriNetUnfolderBase]: 208/376 cut-off events. [2024-06-27 23:19:42,818 INFO L125 PetriNetUnfolderBase]: For 4760/4760 co-relation queries the response was YES. [2024-06-27 23:19:42,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 376 events. 208/376 cut-off events. For 4760/4760 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1320 event pairs, 41 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 1929. Up to 336 conditions per place. [2024-06-27 23:19:42,820 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 59 selfloop transitions, 19 changer transitions 0/80 dead transitions. [2024-06-27 23:19:42,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 80 transitions, 736 flow [2024-06-27 23:19:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 23:19:42,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 23:19:42,824 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 539 flow. Second operand 8 states and 93 transitions. [2024-06-27 23:19:42,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 80 transitions, 736 flow [2024-06-27 23:19:42,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 683 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 23:19:42,830 INFO L231 Difference]: Finished difference. Result has 86 places, 69 transitions, 540 flow [2024-06-27 23:19:42,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=540, PETRI_PLACES=86, PETRI_TRANSITIONS=69} [2024-06-27 23:19:42,831 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-27 23:19:42,831 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 69 transitions, 540 flow [2024-06-27 23:19:42,831 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) [2024-06-27 23:19:42,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:42,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:42,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:19:42,832 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)] === [2024-06-27 23:19:42,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash 154896569, now seen corresponding path program 6 times [2024-06-27 23:19:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:42,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161019541] [2024-06-27 23:19:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:42,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:43,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:43,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161019541] [2024-06-27 23:19:43,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161019541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:43,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:43,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:43,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935897448] [2024-06-27 23:19:43,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:43,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:43,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:44,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:44,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 69 transitions, 540 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) [2024-06-27 23:19:44,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:44,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:44,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:44,369 INFO L124 PetriNetUnfolderBase]: 206/373 cut-off events. [2024-06-27 23:19:44,369 INFO L125 PetriNetUnfolderBase]: For 5106/5106 co-relation queries the response was YES. [2024-06-27 23:19:44,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 373 events. 206/373 cut-off events. For 5106/5106 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1311 event pairs, 44 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 1924. Up to 306 conditions per place. [2024-06-27 23:19:44,372 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 48 selfloop transitions, 31 changer transitions 0/81 dead transitions. [2024-06-27 23:19:44,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 748 flow [2024-06-27 23:19:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 23:19:44,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 23:19:44,373 INFO L175 Difference]: Start difference. First operand has 86 places, 69 transitions, 540 flow. Second operand 8 states and 95 transitions. [2024-06-27 23:19:44,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 748 flow [2024-06-27 23:19:44,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 81 transitions, 706 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:44,380 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 593 flow [2024-06-27 23:19:44,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=593, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2024-06-27 23:19:44,380 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-27 23:19:44,380 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 593 flow [2024-06-27 23:19:44,381 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) [2024-06-27 23:19:44,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:44,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:44,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:19:44,381 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)] === [2024-06-27 23:19:44,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:44,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1429287717, now seen corresponding path program 4 times [2024-06-27 23:19:44,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:44,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602166317] [2024-06-27 23:19:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:44,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:45,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:45,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602166317] [2024-06-27 23:19:45,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602166317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:45,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:45,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037300296] [2024-06-27 23:19:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:45,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:45,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:45,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:45,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:45,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 71 transitions, 593 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) [2024-06-27 23:19:45,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:45,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:45,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:45,995 INFO L124 PetriNetUnfolderBase]: 204/370 cut-off events. [2024-06-27 23:19:45,995 INFO L125 PetriNetUnfolderBase]: For 5528/5528 co-relation queries the response was YES. [2024-06-27 23:19:45,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 370 events. 204/370 cut-off events. For 5528/5528 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1311 event pairs, 44 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1969. Up to 322 conditions per place. [2024-06-27 23:19:45,998 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 57 selfloop transitions, 24 changer transitions 0/83 dead transitions. [2024-06-27 23:19:45,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 83 transitions, 795 flow [2024-06-27 23:19:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 23:19:45,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-27 23:19:45,999 INFO L175 Difference]: Start difference. First operand has 89 places, 71 transitions, 593 flow. Second operand 8 states and 94 transitions. [2024-06-27 23:19:45,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 83 transitions, 795 flow [2024-06-27 23:19:46,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 716 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:46,012 INFO L231 Difference]: Finished difference. Result has 91 places, 73 transitions, 585 flow [2024-06-27 23:19:46,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=585, PETRI_PLACES=91, PETRI_TRANSITIONS=73} [2024-06-27 23:19:46,013 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-27 23:19:46,013 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 73 transitions, 585 flow [2024-06-27 23:19:46,013 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) [2024-06-27 23:19:46,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:46,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:46,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:19:46,013 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)] === [2024-06-27 23:19:46,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:46,014 INFO L85 PathProgramCache]: Analyzing trace with hash 522219842, now seen corresponding path program 1 times [2024-06-27 23:19:46,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:46,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132169317] [2024-06-27 23:19:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:46,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:47,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:47,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132169317] [2024-06-27 23:19:47,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132169317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:47,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:47,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:19:47,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215820311] [2024-06-27 23:19:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:19:47,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:19:47,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:19:47,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:47,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 73 transitions, 585 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:47,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:47,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:47,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:47,862 INFO L124 PetriNetUnfolderBase]: 216/392 cut-off events. [2024-06-27 23:19:47,863 INFO L125 PetriNetUnfolderBase]: For 6260/6260 co-relation queries the response was YES. [2024-06-27 23:19:47,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 392 events. 216/392 cut-off events. For 6260/6260 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1433 event pairs, 47 based on Foata normal form. 1/391 useless extension candidates. Maximal degree in co-relation 2105. Up to 355 conditions per place. [2024-06-27 23:19:47,865 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 71 selfloop transitions, 18 changer transitions 0/91 dead transitions. [2024-06-27 23:19:47,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 91 transitions, 883 flow [2024-06-27 23:19:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 23:19:47,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 23:19:47,867 INFO L175 Difference]: Start difference. First operand has 91 places, 73 transitions, 585 flow. Second operand 10 states and 107 transitions. [2024-06-27 23:19:47,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 91 transitions, 883 flow [2024-06-27 23:19:47,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 828 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:47,875 INFO L231 Difference]: Finished difference. Result has 96 places, 79 transitions, 635 flow [2024-06-27 23:19:47,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=635, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2024-06-27 23:19:47,875 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 67 predicate places. [2024-06-27 23:19:47,875 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 635 flow [2024-06-27 23:19:47,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:47,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:47,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:47,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:19:47,876 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)] === [2024-06-27 23:19:47,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:47,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1341868780, now seen corresponding path program 2 times [2024-06-27 23:19:47,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:47,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236466179] [2024-06-27 23:19:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:47,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:49,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:49,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236466179] [2024-06-27 23:19:49,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236466179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:49,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:49,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:19:49,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097599770] [2024-06-27 23:19:49,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:49,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:19:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:19:49,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:19:49,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:49,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 635 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:49,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:49,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:49,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:49,615 INFO L124 PetriNetUnfolderBase]: 214/389 cut-off events. [2024-06-27 23:19:49,615 INFO L125 PetriNetUnfolderBase]: For 6691/6691 co-relation queries the response was YES. [2024-06-27 23:19:49,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 389 events. 214/389 cut-off events. For 6691/6691 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1427 event pairs, 47 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 2129. Up to 361 conditions per place. [2024-06-27 23:19:49,618 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 72 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-27 23:19:49,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 88 transitions, 831 flow [2024-06-27 23:19:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 23:19:49,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 23:19:49,620 INFO L175 Difference]: Start difference. First operand has 96 places, 79 transitions, 635 flow. Second operand 9 states and 95 transitions. [2024-06-27 23:19:49,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 88 transitions, 831 flow [2024-06-27 23:19:49,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 88 transitions, 784 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:49,629 INFO L231 Difference]: Finished difference. Result has 99 places, 79 transitions, 621 flow [2024-06-27 23:19:49,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=90, 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=9, PETRI_FLOW=621, PETRI_PLACES=99, PETRI_TRANSITIONS=79} [2024-06-27 23:19:49,630 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-27 23:19:49,630 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 79 transitions, 621 flow [2024-06-27 23:19:49,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:49,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:49,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:49,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:19:49,630 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)] === [2024-06-27 23:19:49,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1341868935, now seen corresponding path program 1 times [2024-06-27 23:19:49,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:49,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822135945] [2024-06-27 23:19:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:49,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:50,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:50,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822135945] [2024-06-27 23:19:50,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822135945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:50,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:50,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:50,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592878507] [2024-06-27 23:19:50,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:50,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:50,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:50,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:50,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:50,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 79 transitions, 621 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) [2024-06-27 23:19:50,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:50,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:50,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:50,984 INFO L124 PetriNetUnfolderBase]: 217/394 cut-off events. [2024-06-27 23:19:50,984 INFO L125 PetriNetUnfolderBase]: For 7330/7330 co-relation queries the response was YES. [2024-06-27 23:19:50,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 394 events. 217/394 cut-off events. For 7330/7330 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1440 event pairs, 46 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 2173. Up to 366 conditions per place. [2024-06-27 23:19:50,987 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 74 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-27 23:19:50,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 90 transitions, 839 flow [2024-06-27 23:19:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:50,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 23:19:50,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-27 23:19:50,988 INFO L175 Difference]: Start difference. First operand has 99 places, 79 transitions, 621 flow. Second operand 8 states and 89 transitions. [2024-06-27 23:19:50,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 90 transitions, 839 flow [2024-06-27 23:19:50,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 90 transitions, 812 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:50,997 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 649 flow [2024-06-27 23:19:50,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=649, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-06-27 23:19:50,998 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-06-27 23:19:50,998 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 649 flow [2024-06-27 23:19:50,998 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) [2024-06-27 23:19:50,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:50,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:50,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:19:50,999 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)] === [2024-06-27 23:19:50,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1345593802, now seen corresponding path program 1 times [2024-06-27 23:19:50,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:50,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431262357] [2024-06-27 23:19:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:52,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:52,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431262357] [2024-06-27 23:19:52,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431262357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:52,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:52,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:52,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635645536] [2024-06-27 23:19:52,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:52,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:52,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:52,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:52,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:52,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 649 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) [2024-06-27 23:19:52,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:52,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:52,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:52,506 INFO L124 PetriNetUnfolderBase]: 233/420 cut-off events. [2024-06-27 23:19:52,507 INFO L125 PetriNetUnfolderBase]: For 8679/8679 co-relation queries the response was YES. [2024-06-27 23:19:52,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2437 conditions, 420 events. 233/420 cut-off events. For 8679/8679 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1548 event pairs, 49 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 2384. Up to 360 conditions per place. [2024-06-27 23:19:52,510 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 74 selfloop transitions, 22 changer transitions 0/98 dead transitions. [2024-06-27 23:19:52,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 955 flow [2024-06-27 23:19:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:19:52,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-27 23:19:52,513 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 649 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:19:52,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 955 flow [2024-06-27 23:19:52,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 98 transitions, 916 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:52,524 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 719 flow [2024-06-27 23:19:52,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=719, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2024-06-27 23:19:52,524 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2024-06-27 23:19:52,524 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 719 flow [2024-06-27 23:19:52,525 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) [2024-06-27 23:19:52,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:52,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:52,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:19:52,525 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)] === [2024-06-27 23:19:52,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:52,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1240903923, now seen corresponding path program 2 times [2024-06-27 23:19:52,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:52,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099665247] [2024-06-27 23:19:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:52,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:53,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:53,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099665247] [2024-06-27 23:19:53,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099665247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:53,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:53,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:53,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696588043] [2024-06-27 23:19:53,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:53,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:53,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:53,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:53,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:53,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 719 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) [2024-06-27 23:19:53,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:53,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:53,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:53,735 INFO L124 PetriNetUnfolderBase]: 246/441 cut-off events. [2024-06-27 23:19:53,735 INFO L125 PetriNetUnfolderBase]: For 9920/9920 co-relation queries the response was YES. [2024-06-27 23:19:53,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 441 events. 246/441 cut-off events. For 9920/9920 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1649 event pairs, 49 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 2651. Up to 371 conditions per place. [2024-06-27 23:19:53,738 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 72 selfloop transitions, 29 changer transitions 0/103 dead transitions. [2024-06-27 23:19:53,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 103 transitions, 1103 flow [2024-06-27 23:19:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:19:53,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-27 23:19:53,749 INFO L175 Difference]: Start difference. First operand has 103 places, 87 transitions, 719 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:19:53,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 103 transitions, 1103 flow [2024-06-27 23:19:53,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 1080 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 23:19:53,762 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 829 flow [2024-06-27 23:19:53,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=829, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-06-27 23:19:53,763 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2024-06-27 23:19:53,763 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 829 flow [2024-06-27 23:19:53,763 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) [2024-06-27 23:19:53,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:53,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:53,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:19:53,764 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)] === [2024-06-27 23:19:53,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:53,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1345588005, now seen corresponding path program 3 times [2024-06-27 23:19:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:53,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270057124] [2024-06-27 23:19:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:54,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:54,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270057124] [2024-06-27 23:19:54,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270057124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:54,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:54,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:54,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781840200] [2024-06-27 23:19:54,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:54,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:54,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:54,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:54,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:54,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:54,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 829 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) [2024-06-27 23:19:54,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:54,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:54,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:55,022 INFO L124 PetriNetUnfolderBase]: 244/438 cut-off events. [2024-06-27 23:19:55,022 INFO L125 PetriNetUnfolderBase]: For 10556/10556 co-relation queries the response was YES. [2024-06-27 23:19:55,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 438 events. 244/438 cut-off events. For 10556/10556 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1645 event pairs, 49 based on Foata normal form. 1/437 useless extension candidates. Maximal degree in co-relation 2705. Up to 369 conditions per place. [2024-06-27 23:19:55,026 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 72 selfloop transitions, 28 changer transitions 0/102 dead transitions. [2024-06-27 23:19:55,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 102 transitions, 1099 flow [2024-06-27 23:19:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:19:55,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-27 23:19:55,030 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 829 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:19:55,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 102 transitions, 1099 flow [2024-06-27 23:19:55,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 102 transitions, 1052 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 23:19:55,045 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 843 flow [2024-06-27 23:19:55,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=843, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2024-06-27 23:19:55,045 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-27 23:19:55,045 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 843 flow [2024-06-27 23:19:55,046 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) [2024-06-27 23:19:55,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:55,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:55,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:19:55,046 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)] === [2024-06-27 23:19:55,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:55,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1345587850, now seen corresponding path program 3 times [2024-06-27 23:19:55,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:55,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139143333] [2024-06-27 23:19:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:55,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:56,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:56,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139143333] [2024-06-27 23:19:56,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139143333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:56,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:56,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:56,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151694259] [2024-06-27 23:19:56,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:56,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:56,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:56,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:56,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:56,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:56,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 843 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) [2024-06-27 23:19:56,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:56,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:56,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:56,540 INFO L124 PetriNetUnfolderBase]: 247/443 cut-off events. [2024-06-27 23:19:56,540 INFO L125 PetriNetUnfolderBase]: For 11399/11399 co-relation queries the response was YES. [2024-06-27 23:19:56,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 443 events. 247/443 cut-off events. For 11399/11399 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1672 event pairs, 48 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2791. Up to 400 conditions per place. [2024-06-27 23:19:56,544 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 80 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2024-06-27 23:19:56,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 103 transitions, 1089 flow [2024-06-27 23:19:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 23:19:56,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:19:56,546 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 843 flow. Second operand 8 states and 92 transitions. [2024-06-27 23:19:56,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 103 transitions, 1089 flow [2024-06-27 23:19:56,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 103 transitions, 1021 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:56,560 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 850 flow [2024-06-27 23:19:56,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=850, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-06-27 23:19:56,561 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-27 23:19:56,561 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 850 flow [2024-06-27 23:19:56,561 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) [2024-06-27 23:19:56,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:56,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:56,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:19:56,561 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)] === [2024-06-27 23:19:56,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:56,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1856143225, now seen corresponding path program 4 times [2024-06-27 23:19:56,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:56,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777772528] [2024-06-27 23:19:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:56,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:57,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:57,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777772528] [2024-06-27 23:19:57,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777772528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:57,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:57,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:57,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793702] [2024-06-27 23:19:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:57,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:57,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:57,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:57,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:57,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 850 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) [2024-06-27 23:19:57,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:57,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:57,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:57,774 INFO L124 PetriNetUnfolderBase]: 250/447 cut-off events. [2024-06-27 23:19:57,774 INFO L125 PetriNetUnfolderBase]: For 12253/12253 co-relation queries the response was YES. [2024-06-27 23:19:57,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 447 events. 250/447 cut-off events. For 12253/12253 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1680 event pairs, 47 based on Foata normal form. 1/446 useless extension candidates. Maximal degree in co-relation 2859. Up to 409 conditions per place. [2024-06-27 23:19:57,777 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 83 selfloop transitions, 20 changer transitions 0/105 dead transitions. [2024-06-27 23:19:57,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 105 transitions, 1152 flow [2024-06-27 23:19:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 23:19:57,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-06-27 23:19:57,778 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 850 flow. Second operand 8 states and 91 transitions. [2024-06-27 23:19:57,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 105 transitions, 1152 flow [2024-06-27 23:19:57,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 105 transitions, 1093 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:57,793 INFO L231 Difference]: Finished difference. Result has 116 places, 97 transitions, 862 flow [2024-06-27 23:19:57,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=862, PETRI_PLACES=116, PETRI_TRANSITIONS=97} [2024-06-27 23:19:57,794 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-27 23:19:57,794 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 97 transitions, 862 flow [2024-06-27 23:19:57,794 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) [2024-06-27 23:19:57,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:57,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:57,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:19:57,795 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)] === [2024-06-27 23:19:57,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:57,795 INFO L85 PathProgramCache]: Analyzing trace with hash -134820709, now seen corresponding path program 5 times [2024-06-27 23:19:57,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:57,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392584421] [2024-06-27 23:19:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:57,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:58,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:58,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392584421] [2024-06-27 23:19:58,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392584421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:58,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:58,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:58,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491033330] [2024-06-27 23:19:58,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:58,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:58,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:58,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:58,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:58,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:58,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 97 transitions, 862 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) [2024-06-27 23:19:58,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:58,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:58,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:59,026 INFO L124 PetriNetUnfolderBase]: 301/530 cut-off events. [2024-06-27 23:19:59,027 INFO L125 PetriNetUnfolderBase]: For 17052/17052 co-relation queries the response was YES. [2024-06-27 23:19:59,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 530 events. 301/530 cut-off events. For 17052/17052 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2071 event pairs, 52 based on Foata normal form. 3/531 useless extension candidates. Maximal degree in co-relation 3527. Up to 435 conditions per place. [2024-06-27 23:19:59,037 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 94 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2024-06-27 23:19:59,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 121 transitions, 1376 flow [2024-06-27 23:19:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:59,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:19:59,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:19:59,038 INFO L175 Difference]: Start difference. First operand has 116 places, 97 transitions, 862 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:19:59,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 121 transitions, 1376 flow [2024-06-27 23:19:59,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 1303 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:59,056 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 976 flow [2024-06-27 23:19:59,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=976, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2024-06-27 23:19:59,061 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 91 predicate places. [2024-06-27 23:19:59,061 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 976 flow [2024-06-27 23:19:59,062 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) [2024-06-27 23:19:59,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:59,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:59,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:19:59,063 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)] === [2024-06-27 23:19:59,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:59,063 INFO L85 PathProgramCache]: Analyzing trace with hash 617964247, now seen corresponding path program 6 times [2024-06-27 23:19:59,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:59,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084763023] [2024-06-27 23:19:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:59,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:59,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:59,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084763023] [2024-06-27 23:19:59,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084763023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:59,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:59,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:59,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265716911] [2024-06-27 23:19:59,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:59,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:59,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:59,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:59,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:59,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:19:59,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 976 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) [2024-06-27 23:19:59,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:59,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:19:59,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:00,203 INFO L124 PetriNetUnfolderBase]: 299/527 cut-off events. [2024-06-27 23:20:00,204 INFO L125 PetriNetUnfolderBase]: For 17422/17422 co-relation queries the response was YES. [2024-06-27 23:20:00,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3665 conditions, 527 events. 299/527 cut-off events. For 17422/17422 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2067 event pairs, 54 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 3600. Up to 504 conditions per place. [2024-06-27 23:20:00,207 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 99 selfloop transitions, 14 changer transitions 0/115 dead transitions. [2024-06-27 23:20:00,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 115 transitions, 1226 flow [2024-06-27 23:20:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 23:20:00,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 23:20:00,208 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 976 flow. Second operand 8 states and 87 transitions. [2024-06-27 23:20:00,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 115 transitions, 1226 flow [2024-06-27 23:20:00,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 115 transitions, 1164 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 23:20:00,227 INFO L231 Difference]: Finished difference. Result has 124 places, 108 transitions, 957 flow [2024-06-27 23:20:00,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=957, PETRI_PLACES=124, PETRI_TRANSITIONS=108} [2024-06-27 23:20:00,230 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-27 23:20:00,230 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 957 flow [2024-06-27 23:20:00,230 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) [2024-06-27 23:20:00,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:00,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:00,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:20:00,231 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)] === [2024-06-27 23:20:00,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1753263670, now seen corresponding path program 2 times [2024-06-27 23:20:00,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:00,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946022276] [2024-06-27 23:20:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:00,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:01,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:01,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946022276] [2024-06-27 23:20:01,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946022276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:01,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:01,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:01,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121649966] [2024-06-27 23:20:01,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:01,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:01,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:01,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:01,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 108 transitions, 957 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) [2024-06-27 23:20:01,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:01,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:01,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:01,902 INFO L124 PetriNetUnfolderBase]: 293/517 cut-off events. [2024-06-27 23:20:01,903 INFO L125 PetriNetUnfolderBase]: For 17773/17773 co-relation queries the response was YES. [2024-06-27 23:20:01,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3535 conditions, 517 events. 293/517 cut-off events. For 17773/17773 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2028 event pairs, 50 based on Foata normal form. 2/517 useless extension candidates. Maximal degree in co-relation 3468. Up to 464 conditions per place. [2024-06-27 23:20:01,906 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 96 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2024-06-27 23:20:01,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 118 transitions, 1273 flow [2024-06-27 23:20:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 23:20:01,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 23:20:01,908 INFO L175 Difference]: Start difference. First operand has 124 places, 108 transitions, 957 flow. Second operand 9 states and 100 transitions. [2024-06-27 23:20:01,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 118 transitions, 1273 flow [2024-06-27 23:20:01,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 118 transitions, 1244 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:01,931 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 973 flow [2024-06-27 23:20:01,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=973, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2024-06-27 23:20:01,931 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-27 23:20:01,932 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 973 flow [2024-06-27 23:20:01,932 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) [2024-06-27 23:20:01,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:01,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:01,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:20:01,932 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)] === [2024-06-27 23:20:01,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash -134826444, now seen corresponding path program 4 times [2024-06-27 23:20:01,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:01,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580173041] [2024-06-27 23:20:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:01,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:03,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:03,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580173041] [2024-06-27 23:20:03,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580173041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:03,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:03,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:03,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029710353] [2024-06-27 23:20:03,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:03,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:03,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:03,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:03,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:03,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:03,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 973 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) [2024-06-27 23:20:03,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:03,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:03,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:03,461 INFO L124 PetriNetUnfolderBase]: 296/522 cut-off events. [2024-06-27 23:20:03,461 INFO L125 PetriNetUnfolderBase]: For 18671/18671 co-relation queries the response was YES. [2024-06-27 23:20:03,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 522 events. 296/522 cut-off events. For 18671/18671 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2040 event pairs, 51 based on Foata normal form. 1/521 useless extension candidates. Maximal degree in co-relation 3567. Up to 499 conditions per place. [2024-06-27 23:20:03,464 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 101 selfloop transitions, 14 changer transitions 0/117 dead transitions. [2024-06-27 23:20:03,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 117 transitions, 1247 flow [2024-06-27 23:20:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 23:20:03,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 23:20:03,466 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 973 flow. Second operand 8 states and 87 transitions. [2024-06-27 23:20:03,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 117 transitions, 1247 flow [2024-06-27 23:20:03,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 117 transitions, 1180 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:03,488 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 971 flow [2024-06-27 23:20:03,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=971, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2024-06-27 23:20:03,488 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-27 23:20:03,488 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 971 flow [2024-06-27 23:20:03,488 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) [2024-06-27 23:20:03,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:03,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:03,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:20:03,489 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)] === [2024-06-27 23:20:03,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash 617964464, now seen corresponding path program 3 times [2024-06-27 23:20:03,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:03,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983732630] [2024-06-27 23:20:03,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:03,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:04,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:04,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983732630] [2024-06-27 23:20:04,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983732630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:04,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:04,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:04,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359707001] [2024-06-27 23:20:04,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:04,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:04,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:04,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:04,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:04,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 971 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) [2024-06-27 23:20:04,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:04,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:04,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:04,933 INFO L124 PetriNetUnfolderBase]: 292/516 cut-off events. [2024-06-27 23:20:04,934 INFO L125 PetriNetUnfolderBase]: For 18992/18992 co-relation queries the response was YES. [2024-06-27 23:20:04,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3529 conditions, 516 events. 292/516 cut-off events. For 18992/18992 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2012 event pairs, 52 based on Foata normal form. 2/516 useless extension candidates. Maximal degree in co-relation 3462. Up to 478 conditions per place. [2024-06-27 23:20:04,937 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 102 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-27 23:20:04,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 121 transitions, 1309 flow [2024-06-27 23:20:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 23:20:04,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-27 23:20:04,945 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 971 flow. Second operand 9 states and 98 transitions. [2024-06-27 23:20:04,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 121 transitions, 1309 flow [2024-06-27 23:20:04,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 121 transitions, 1260 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:04,970 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 973 flow [2024-06-27 23:20:04,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=973, PETRI_PLACES=130, PETRI_TRANSITIONS=111} [2024-06-27 23:20:04,971 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-27 23:20:04,971 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 973 flow [2024-06-27 23:20:04,971 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) [2024-06-27 23:20:04,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:04,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:04,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:20:04,971 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)] === [2024-06-27 23:20:04,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:04,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1745645110, now seen corresponding path program 4 times [2024-06-27 23:20:04,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:04,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878408728] [2024-06-27 23:20:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:05,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:05,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878408728] [2024-06-27 23:20:05,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878408728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:05,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:05,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591657896] [2024-06-27 23:20:05,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:05,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:05,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:05,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:05,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:05,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:05,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 111 transitions, 973 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) [2024-06-27 23:20:05,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:05,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:05,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:06,302 INFO L124 PetriNetUnfolderBase]: 291/515 cut-off events. [2024-06-27 23:20:06,303 INFO L125 PetriNetUnfolderBase]: For 19705/19705 co-relation queries the response was YES. [2024-06-27 23:20:06,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 515 events. 291/515 cut-off events. For 19705/19705 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2019 event pairs, 53 based on Foata normal form. 3/516 useless extension candidates. Maximal degree in co-relation 3429. Up to 483 conditions per place. [2024-06-27 23:20:06,306 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 102 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-27 23:20:06,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 121 transitions, 1253 flow [2024-06-27 23:20:06,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 23:20:06,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 23:20:06,307 INFO L175 Difference]: Start difference. First operand has 130 places, 111 transitions, 973 flow. Second operand 9 states and 95 transitions. [2024-06-27 23:20:06,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 121 transitions, 1253 flow [2024-06-27 23:20:06,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 121 transitions, 1197 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:06,331 INFO L231 Difference]: Finished difference. Result has 132 places, 113 transitions, 985 flow [2024-06-27 23:20:06,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=985, PETRI_PLACES=132, PETRI_TRANSITIONS=113} [2024-06-27 23:20:06,331 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-06-27 23:20:06,331 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 113 transitions, 985 flow [2024-06-27 23:20:06,331 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) [2024-06-27 23:20:06,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:06,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:06,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:20:06,332 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)] === [2024-06-27 23:20:06,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1809269968, now seen corresponding path program 5 times [2024-06-27 23:20:06,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:06,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416643685] [2024-06-27 23:20:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:06,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:07,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:07,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416643685] [2024-06-27 23:20:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416643685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:07,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:07,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:20:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770121424] [2024-06-27 23:20:07,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:07,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:20:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:20:07,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:20:07,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:07,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 113 transitions, 985 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) [2024-06-27 23:20:07,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:07,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:07,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:07,680 INFO L124 PetriNetUnfolderBase]: 303/536 cut-off events. [2024-06-27 23:20:07,681 INFO L125 PetriNetUnfolderBase]: For 20400/20400 co-relation queries the response was YES. [2024-06-27 23:20:07,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 536 events. 303/536 cut-off events. For 20400/20400 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2126 event pairs, 44 based on Foata normal form. 1/535 useless extension candidates. Maximal degree in co-relation 3622. Up to 452 conditions per place. [2024-06-27 23:20:07,684 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 98 selfloop transitions, 34 changer transitions 0/134 dead transitions. [2024-06-27 23:20:07,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 134 transitions, 1437 flow [2024-06-27 23:20:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:20:07,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-27 23:20:07,686 INFO L175 Difference]: Start difference. First operand has 132 places, 113 transitions, 985 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:20:07,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 134 transitions, 1437 flow [2024-06-27 23:20:07,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 1375 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:07,712 INFO L231 Difference]: Finished difference. Result has 134 places, 120 transitions, 1103 flow [2024-06-27 23:20:07,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1103, PETRI_PLACES=134, PETRI_TRANSITIONS=120} [2024-06-27 23:20:07,713 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2024-06-27 23:20:07,713 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 120 transitions, 1103 flow [2024-06-27 23:20:07,713 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) [2024-06-27 23:20:07,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:07,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:07,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:20:07,713 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)] === [2024-06-27 23:20:07,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1807101188, now seen corresponding path program 6 times [2024-06-27 23:20:07,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:07,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367636092] [2024-06-27 23:20:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:07,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:09,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367636092] [2024-06-27 23:20:09,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367636092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:09,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:09,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:09,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988812816] [2024-06-27 23:20:09,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:09,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:09,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:09,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:09,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:09,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 120 transitions, 1103 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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) [2024-06-27 23:20:09,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:09,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:09,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:09,345 INFO L124 PetriNetUnfolderBase]: 306/540 cut-off events. [2024-06-27 23:20:09,345 INFO L125 PetriNetUnfolderBase]: For 21790/21790 co-relation queries the response was YES. [2024-06-27 23:20:09,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 540 events. 306/540 cut-off events. For 21790/21790 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2147 event pairs, 44 based on Foata normal form. 1/539 useless extension candidates. Maximal degree in co-relation 3762. Up to 456 conditions per place. [2024-06-27 23:20:09,350 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 97 selfloop transitions, 38 changer transitions 0/137 dead transitions. [2024-06-27 23:20:09,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 137 transitions, 1515 flow [2024-06-27 23:20:09,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:20:09,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 23:20:09,357 INFO L175 Difference]: Start difference. First operand has 134 places, 120 transitions, 1103 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:20:09,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 137 transitions, 1515 flow [2024-06-27 23:20:09,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 1451 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 23:20:09,391 INFO L231 Difference]: Finished difference. Result has 138 places, 122 transitions, 1164 flow [2024-06-27 23:20:09,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1164, PETRI_PLACES=138, PETRI_TRANSITIONS=122} [2024-06-27 23:20:09,391 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2024-06-27 23:20:09,391 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 122 transitions, 1164 flow [2024-06-27 23:20:09,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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) [2024-06-27 23:20:09,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:09,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:09,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:20:09,392 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)] === [2024-06-27 23:20:09,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:09,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1498733493, now seen corresponding path program 7 times [2024-06-27 23:20:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:09,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070697284] [2024-06-27 23:20:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:09,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:10,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070697284] [2024-06-27 23:20:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070697284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:10,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:10,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200349455] [2024-06-27 23:20:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:10,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:10,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:10,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 122 transitions, 1164 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) [2024-06-27 23:20:10,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:10,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:10,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:11,044 INFO L124 PetriNetUnfolderBase]: 314/553 cut-off events. [2024-06-27 23:20:11,045 INFO L125 PetriNetUnfolderBase]: For 22312/22312 co-relation queries the response was YES. [2024-06-27 23:20:11,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3973 conditions, 553 events. 314/553 cut-off events. For 22312/22312 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2206 event pairs, 46 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 3905. Up to 496 conditions per place. [2024-06-27 23:20:11,049 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 111 selfloop transitions, 28 changer transitions 0/141 dead transitions. [2024-06-27 23:20:11,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 141 transitions, 1604 flow [2024-06-27 23:20:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 23:20:11,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-27 23:20:11,053 INFO L175 Difference]: Start difference. First operand has 138 places, 122 transitions, 1164 flow. Second operand 10 states and 113 transitions. [2024-06-27 23:20:11,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 141 transitions, 1604 flow [2024-06-27 23:20:11,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 141 transitions, 1519 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:11,089 INFO L231 Difference]: Finished difference. Result has 142 places, 126 transitions, 1202 flow [2024-06-27 23:20:11,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1202, PETRI_PLACES=142, PETRI_TRANSITIONS=126} [2024-06-27 23:20:11,089 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2024-06-27 23:20:11,090 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 126 transitions, 1202 flow [2024-06-27 23:20:11,090 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) [2024-06-27 23:20:11,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:11,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:11,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:20:11,090 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)] === [2024-06-27 23:20:11,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1498738298, now seen corresponding path program 7 times [2024-06-27 23:20:11,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:11,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236179874] [2024-06-27 23:20:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:11,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:12,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236179874] [2024-06-27 23:20:12,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236179874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:12,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:12,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:12,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384817118] [2024-06-27 23:20:12,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:12,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:12,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:12,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:12,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:12,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:12,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 126 transitions, 1202 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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) [2024-06-27 23:20:12,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:12,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:12,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:12,638 INFO L124 PetriNetUnfolderBase]: 312/550 cut-off events. [2024-06-27 23:20:12,639 INFO L125 PetriNetUnfolderBase]: For 21813/21813 co-relation queries the response was YES. [2024-06-27 23:20:12,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 550 events. 312/550 cut-off events. For 21813/21813 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2195 event pairs, 46 based on Foata normal form. 1/549 useless extension candidates. Maximal degree in co-relation 3844. Up to 495 conditions per place. [2024-06-27 23:20:12,642 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 109 selfloop transitions, 26 changer transitions 0/137 dead transitions. [2024-06-27 23:20:12,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 137 transitions, 1500 flow [2024-06-27 23:20:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:20:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:20:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-27 23:20:12,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-27 23:20:12,651 INFO L175 Difference]: Start difference. First operand has 142 places, 126 transitions, 1202 flow. Second operand 7 states and 93 transitions. [2024-06-27 23:20:12,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 137 transitions, 1500 flow [2024-06-27 23:20:12,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 137 transitions, 1426 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:12,682 INFO L231 Difference]: Finished difference. Result has 143 places, 126 transitions, 1189 flow [2024-06-27 23:20:12,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1189, PETRI_PLACES=143, PETRI_TRANSITIONS=126} [2024-06-27 23:20:12,682 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2024-06-27 23:20:12,683 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 126 transitions, 1189 flow [2024-06-27 23:20:12,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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) [2024-06-27 23:20:12,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:12,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:12,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:20:12,683 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)] === [2024-06-27 23:20:12,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:12,684 INFO L85 PathProgramCache]: Analyzing trace with hash 503108649, now seen corresponding path program 8 times [2024-06-27 23:20:12,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:12,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732084289] [2024-06-27 23:20:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:12,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:14,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:14,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732084289] [2024-06-27 23:20:14,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732084289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:14,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:14,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:14,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624765745] [2024-06-27 23:20:14,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:14,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:14,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:14,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:14,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:14,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 126 transitions, 1189 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) [2024-06-27 23:20:14,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:14,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:14,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:14,551 INFO L124 PetriNetUnfolderBase]: 310/547 cut-off events. [2024-06-27 23:20:14,551 INFO L125 PetriNetUnfolderBase]: For 22184/22184 co-relation queries the response was YES. [2024-06-27 23:20:14,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3895 conditions, 547 events. 310/547 cut-off events. For 22184/22184 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2193 event pairs, 45 based on Foata normal form. 1/546 useless extension candidates. Maximal degree in co-relation 3825. Up to 503 conditions per place. [2024-06-27 23:20:14,555 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 115 selfloop transitions, 21 changer transitions 0/138 dead transitions. [2024-06-27 23:20:14,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 138 transitions, 1493 flow [2024-06-27 23:20:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 23:20:14,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-27 23:20:14,556 INFO L175 Difference]: Start difference. First operand has 143 places, 126 transitions, 1189 flow. Second operand 9 states and 102 transitions. [2024-06-27 23:20:14,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 138 transitions, 1493 flow [2024-06-27 23:20:14,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 138 transitions, 1420 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:14,584 INFO L231 Difference]: Finished difference. Result has 145 places, 126 transitions, 1163 flow [2024-06-27 23:20:14,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1163, PETRI_PLACES=145, PETRI_TRANSITIONS=126} [2024-06-27 23:20:14,585 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-27 23:20:14,585 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 126 transitions, 1163 flow [2024-06-27 23:20:14,585 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) [2024-06-27 23:20:14,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:14,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:14,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:20:14,586 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)] === [2024-06-27 23:20:14,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:14,586 INFO L85 PathProgramCache]: Analyzing trace with hash 506827719, now seen corresponding path program 9 times [2024-06-27 23:20:14,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:14,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215480247] [2024-06-27 23:20:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:14,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:16,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:16,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215480247] [2024-06-27 23:20:16,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215480247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:16,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:16,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:16,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428522832] [2024-06-27 23:20:16,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:16,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:16,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:16,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:16,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:16,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:16,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 126 transitions, 1163 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) [2024-06-27 23:20:16,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:16,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:16,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:16,453 INFO L124 PetriNetUnfolderBase]: 313/552 cut-off events. [2024-06-27 23:20:16,454 INFO L125 PetriNetUnfolderBase]: For 22265/22265 co-relation queries the response was YES. [2024-06-27 23:20:16,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 552 events. 313/552 cut-off events. For 22265/22265 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2214 event pairs, 49 based on Foata normal form. 1/551 useless extension candidates. Maximal degree in co-relation 3831. Up to 438 conditions per place. [2024-06-27 23:20:16,457 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 91 selfloop transitions, 49 changer transitions 0/142 dead transitions. [2024-06-27 23:20:16,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 142 transitions, 1607 flow [2024-06-27 23:20:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:16,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 23:20:16,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-27 23:20:16,473 INFO L175 Difference]: Start difference. First operand has 145 places, 126 transitions, 1163 flow. Second operand 9 states and 109 transitions. [2024-06-27 23:20:16,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 142 transitions, 1607 flow [2024-06-27 23:20:16,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 142 transitions, 1546 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:16,505 INFO L231 Difference]: Finished difference. Result has 146 places, 130 transitions, 1273 flow [2024-06-27 23:20:16,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1273, PETRI_PLACES=146, PETRI_TRANSITIONS=130} [2024-06-27 23:20:16,506 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 117 predicate places. [2024-06-27 23:20:16,506 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 130 transitions, 1273 flow [2024-06-27 23:20:16,507 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) [2024-06-27 23:20:16,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:16,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:16,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:20:16,507 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)] === [2024-06-27 23:20:16,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:16,507 INFO L85 PathProgramCache]: Analyzing trace with hash 506827564, now seen corresponding path program 8 times [2024-06-27 23:20:16,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:16,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067684611] [2024-06-27 23:20:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:16,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:17,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067684611] [2024-06-27 23:20:17,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067684611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:17,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589364179] [2024-06-27 23:20:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:17,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:17,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:17,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 130 transitions, 1273 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 23:20:17,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:17,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:17,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:18,150 INFO L124 PetriNetUnfolderBase]: 311/549 cut-off events. [2024-06-27 23:20:18,150 INFO L125 PetriNetUnfolderBase]: For 22947/22947 co-relation queries the response was YES. [2024-06-27 23:20:18,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 549 events. 311/549 cut-off events. For 22947/22947 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2203 event pairs, 48 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 3874. Up to 475 conditions per place. [2024-06-27 23:20:18,154 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 103 selfloop transitions, 36 changer transitions 0/141 dead transitions. [2024-06-27 23:20:18,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 141 transitions, 1605 flow [2024-06-27 23:20:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:20:18,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-27 23:20:18,161 INFO L175 Difference]: Start difference. First operand has 146 places, 130 transitions, 1273 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:20:18,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 141 transitions, 1605 flow [2024-06-27 23:20:18,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 141 transitions, 1487 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:18,197 INFO L231 Difference]: Finished difference. Result has 148 places, 132 transitions, 1271 flow [2024-06-27 23:20:18,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1271, PETRI_PLACES=148, PETRI_TRANSITIONS=132} [2024-06-27 23:20:18,199 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2024-06-27 23:20:18,199 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 132 transitions, 1271 flow [2024-06-27 23:20:18,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 23:20:18,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:18,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:18,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:20:18,199 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)] === [2024-06-27 23:20:18,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:18,200 INFO L85 PathProgramCache]: Analyzing trace with hash 506833299, now seen corresponding path program 10 times [2024-06-27 23:20:18,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:18,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216781221] [2024-06-27 23:20:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:18,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:19,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:19,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216781221] [2024-06-27 23:20:19,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216781221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:19,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:19,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:19,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492957253] [2024-06-27 23:20:19,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:19,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:19,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:19,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:19,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:19,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:19,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 132 transitions, 1271 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) [2024-06-27 23:20:19,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:19,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:19,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:19,975 INFO L124 PetriNetUnfolderBase]: 309/547 cut-off events. [2024-06-27 23:20:19,975 INFO L125 PetriNetUnfolderBase]: For 23169/23169 co-relation queries the response was YES. [2024-06-27 23:20:19,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3905 conditions, 547 events. 309/547 cut-off events. For 23169/23169 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2201 event pairs, 49 based on Foata normal form. 1/546 useless extension candidates. Maximal degree in co-relation 3832. Up to 433 conditions per place. [2024-06-27 23:20:19,979 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 90 selfloop transitions, 51 changer transitions 0/143 dead transitions. [2024-06-27 23:20:19,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 143 transitions, 1581 flow [2024-06-27 23:20:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:20:20,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-27 23:20:20,005 INFO L175 Difference]: Start difference. First operand has 148 places, 132 transitions, 1271 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:20:20,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 143 transitions, 1581 flow [2024-06-27 23:20:20,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 143 transitions, 1475 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:20,038 INFO L231 Difference]: Finished difference. Result has 151 places, 132 transitions, 1272 flow [2024-06-27 23:20:20,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1272, PETRI_PLACES=151, PETRI_TRANSITIONS=132} [2024-06-27 23:20:20,040 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-27 23:20:20,040 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 132 transitions, 1272 flow [2024-06-27 23:20:20,040 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) [2024-06-27 23:20:20,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:20,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:20,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:20:20,040 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)] === [2024-06-27 23:20:20,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:20,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1254885526, now seen corresponding path program 5 times [2024-06-27 23:20:20,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:20,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284246328] [2024-06-27 23:20:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:20,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:21,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284246328] [2024-06-27 23:20:21,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284246328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:21,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440002076] [2024-06-27 23:20:21,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:21,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:21,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:21,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:21,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 132 transitions, 1272 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) [2024-06-27 23:20:21,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:21,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:21,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:21,784 INFO L124 PetriNetUnfolderBase]: 305/540 cut-off events. [2024-06-27 23:20:21,784 INFO L125 PetriNetUnfolderBase]: For 22348/22348 co-relation queries the response was YES. [2024-06-27 23:20:21,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3781 conditions, 540 events. 305/540 cut-off events. For 22348/22348 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2168 event pairs, 48 based on Foata normal form. 2/540 useless extension candidates. Maximal degree in co-relation 3707. Up to 458 conditions per place. [2024-06-27 23:20:21,788 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 113 selfloop transitions, 32 changer transitions 0/147 dead transitions. [2024-06-27 23:20:21,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 147 transitions, 1624 flow [2024-06-27 23:20:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:20:21,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-27 23:20:21,789 INFO L175 Difference]: Start difference. First operand has 151 places, 132 transitions, 1272 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:20:21,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 147 transitions, 1624 flow [2024-06-27 23:20:21,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 147 transitions, 1517 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:21,821 INFO L231 Difference]: Finished difference. Result has 152 places, 134 transitions, 1264 flow [2024-06-27 23:20:21,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1264, PETRI_PLACES=152, PETRI_TRANSITIONS=134} [2024-06-27 23:20:21,821 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-06-27 23:20:21,821 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 134 transitions, 1264 flow [2024-06-27 23:20:21,821 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) [2024-06-27 23:20:21,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:21,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:21,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:20:21,822 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)] === [2024-06-27 23:20:21,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:21,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1848508948, now seen corresponding path program 1 times [2024-06-27 23:20:21,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:21,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162140836] [2024-06-27 23:20:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:21,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:23,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:23,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162140836] [2024-06-27 23:20:23,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162140836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:23,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:23,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:23,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770336929] [2024-06-27 23:20:23,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:23,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:23,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:23,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:23,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 134 transitions, 1264 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) [2024-06-27 23:20:23,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:23,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:23,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:23,854 INFO L124 PetriNetUnfolderBase]: 302/535 cut-off events. [2024-06-27 23:20:23,854 INFO L125 PetriNetUnfolderBase]: For 22010/22010 co-relation queries the response was YES. [2024-06-27 23:20:23,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3711 conditions, 535 events. 302/535 cut-off events. For 22010/22010 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2132 event pairs, 59 based on Foata normal form. 2/535 useless extension candidates. Maximal degree in co-relation 3636. Up to 506 conditions per place. [2024-06-27 23:20:23,858 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 126 selfloop transitions, 14 changer transitions 0/142 dead transitions. [2024-06-27 23:20:23,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 142 transitions, 1562 flow [2024-06-27 23:20:23,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:23,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 23:20:23,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-27 23:20:23,859 INFO L175 Difference]: Start difference. First operand has 152 places, 134 transitions, 1264 flow. Second operand 9 states and 93 transitions. [2024-06-27 23:20:23,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 142 transitions, 1562 flow [2024-06-27 23:20:23,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 142 transitions, 1479 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:23,890 INFO L231 Difference]: Finished difference. Result has 154 places, 134 transitions, 1213 flow [2024-06-27 23:20:23,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1213, PETRI_PLACES=154, PETRI_TRANSITIONS=134} [2024-06-27 23:20:23,891 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-27 23:20:23,891 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 134 transitions, 1213 flow [2024-06-27 23:20:23,891 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) [2024-06-27 23:20:23,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:23,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:23,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:20:23,892 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)] === [2024-06-27 23:20:23,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:23,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1354596488, now seen corresponding path program 1 times [2024-06-27 23:20:23,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:23,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757311503] [2024-06-27 23:20:23,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:23,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:25,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:25,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757311503] [2024-06-27 23:20:25,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757311503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:25,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:25,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117686351] [2024-06-27 23:20:25,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:25,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:25,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:25,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 134 transitions, 1213 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:25,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:25,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:25,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:25,887 INFO L124 PetriNetUnfolderBase]: 318/570 cut-off events. [2024-06-27 23:20:25,887 INFO L125 PetriNetUnfolderBase]: For 25070/25070 co-relation queries the response was YES. [2024-06-27 23:20:25,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3916 conditions, 570 events. 318/570 cut-off events. For 25070/25070 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2392 event pairs, 59 based on Foata normal form. 2/570 useless extension candidates. Maximal degree in co-relation 3840. Up to 503 conditions per place. [2024-06-27 23:20:25,891 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 131 selfloop transitions, 20 changer transitions 0/153 dead transitions. [2024-06-27 23:20:25,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 153 transitions, 1683 flow [2024-06-27 23:20:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:25,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 23:20:25,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-27 23:20:25,892 INFO L175 Difference]: Start difference. First operand has 154 places, 134 transitions, 1213 flow. Second operand 11 states and 118 transitions. [2024-06-27 23:20:25,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 153 transitions, 1683 flow [2024-06-27 23:20:25,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 153 transitions, 1651 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:25,929 INFO L231 Difference]: Finished difference. Result has 159 places, 137 transitions, 1282 flow [2024-06-27 23:20:25,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1282, PETRI_PLACES=159, PETRI_TRANSITIONS=137} [2024-06-27 23:20:25,929 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-27 23:20:25,930 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 137 transitions, 1282 flow [2024-06-27 23:20:25,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:25,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:25,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:25,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:20:25,931 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)] === [2024-06-27 23:20:25,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:25,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1354536038, now seen corresponding path program 2 times [2024-06-27 23:20:25,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:25,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699436436] [2024-06-27 23:20:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:25,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:27,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:27,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699436436] [2024-06-27 23:20:27,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699436436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:27,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:27,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:27,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270663671] [2024-06-27 23:20:27,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:27,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:27,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:27,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:27,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 137 transitions, 1282 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:27,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:27,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:27,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:27,883 INFO L124 PetriNetUnfolderBase]: 322/578 cut-off events. [2024-06-27 23:20:27,883 INFO L125 PetriNetUnfolderBase]: For 26319/26319 co-relation queries the response was YES. [2024-06-27 23:20:27,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4046 conditions, 578 events. 322/578 cut-off events. For 26319/26319 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2438 event pairs, 63 based on Foata normal form. 2/578 useless extension candidates. Maximal degree in co-relation 3968. Up to 534 conditions per place. [2024-06-27 23:20:27,887 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 130 selfloop transitions, 19 changer transitions 0/151 dead transitions. [2024-06-27 23:20:27,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 151 transitions, 1639 flow [2024-06-27 23:20:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:27,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 23:20:27,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 23:20:27,913 INFO L175 Difference]: Start difference. First operand has 159 places, 137 transitions, 1282 flow. Second operand 11 states and 115 transitions. [2024-06-27 23:20:27,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 151 transitions, 1639 flow [2024-06-27 23:20:27,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 151 transitions, 1579 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:27,951 INFO L231 Difference]: Finished difference. Result has 163 places, 138 transitions, 1291 flow [2024-06-27 23:20:27,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1291, PETRI_PLACES=163, PETRI_TRANSITIONS=138} [2024-06-27 23:20:27,953 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-27 23:20:27,955 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 138 transitions, 1291 flow [2024-06-27 23:20:27,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:27,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:27,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:27,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:20:27,956 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)] === [2024-06-27 23:20:27,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:27,958 INFO L85 PathProgramCache]: Analyzing trace with hash 68419962, now seen corresponding path program 1 times [2024-06-27 23:20:27,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:27,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977785943] [2024-06-27 23:20:27,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:27,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:29,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:29,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977785943] [2024-06-27 23:20:29,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977785943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:29,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:29,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577547091] [2024-06-27 23:20:29,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:29,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:29,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:29,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:29,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:29,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:29,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 138 transitions, 1291 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) [2024-06-27 23:20:29,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:29,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:29,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:29,647 INFO L124 PetriNetUnfolderBase]: 330/591 cut-off events. [2024-06-27 23:20:29,647 INFO L125 PetriNetUnfolderBase]: For 27597/27597 co-relation queries the response was YES. [2024-06-27 23:20:29,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4144 conditions, 591 events. 330/591 cut-off events. For 27597/27597 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2512 event pairs, 62 based on Foata normal form. 1/590 useless extension candidates. Maximal degree in co-relation 4064. Up to 541 conditions per place. [2024-06-27 23:20:29,651 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 131 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-06-27 23:20:29,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 155 transitions, 1757 flow [2024-06-27 23:20:29,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:20:29,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 23:20:29,663 INFO L175 Difference]: Start difference. First operand has 163 places, 138 transitions, 1291 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:20:29,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 155 transitions, 1757 flow [2024-06-27 23:20:29,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 155 transitions, 1709 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:29,709 INFO L231 Difference]: Finished difference. Result has 164 places, 142 transitions, 1340 flow [2024-06-27 23:20:29,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1340, PETRI_PLACES=164, PETRI_TRANSITIONS=142} [2024-06-27 23:20:29,710 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-27 23:20:29,710 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 142 transitions, 1340 flow [2024-06-27 23:20:29,710 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) [2024-06-27 23:20:29,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:29,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:29,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:20:29,711 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)] === [2024-06-27 23:20:29,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:29,711 INFO L85 PathProgramCache]: Analyzing trace with hash 71221308, now seen corresponding path program 1 times [2024-06-27 23:20:29,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:29,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246012936] [2024-06-27 23:20:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:29,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:31,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:31,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246012936] [2024-06-27 23:20:31,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246012936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:31,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:31,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:31,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360923714] [2024-06-27 23:20:31,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:31,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:31,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:31,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:31,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:31,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:31,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 142 transitions, 1340 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) [2024-06-27 23:20:31,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:31,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:31,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:31,538 INFO L124 PetriNetUnfolderBase]: 336/601 cut-off events. [2024-06-27 23:20:31,538 INFO L125 PetriNetUnfolderBase]: For 29841/29841 co-relation queries the response was YES. [2024-06-27 23:20:31,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4255 conditions, 601 events. 336/601 cut-off events. For 29841/29841 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2554 event pairs, 61 based on Foata normal form. 2/601 useless extension candidates. Maximal degree in co-relation 4174. Up to 565 conditions per place. [2024-06-27 23:20:31,542 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 137 selfloop transitions, 16 changer transitions 0/155 dead transitions. [2024-06-27 23:20:31,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 155 transitions, 1708 flow [2024-06-27 23:20:31,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:20:31,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:20:31,547 INFO L175 Difference]: Start difference. First operand has 164 places, 142 transitions, 1340 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:20:31,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 155 transitions, 1708 flow [2024-06-27 23:20:31,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 155 transitions, 1663 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:31,596 INFO L231 Difference]: Finished difference. Result has 168 places, 144 transitions, 1368 flow [2024-06-27 23:20:31,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1368, PETRI_PLACES=168, PETRI_TRANSITIONS=144} [2024-06-27 23:20:31,596 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-27 23:20:31,596 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 144 transitions, 1368 flow [2024-06-27 23:20:31,597 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) [2024-06-27 23:20:31,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:31,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:31,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:20:31,601 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)] === [2024-06-27 23:20:31,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:31,601 INFO L85 PathProgramCache]: Analyzing trace with hash 71221122, now seen corresponding path program 2 times [2024-06-27 23:20:31,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:31,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939549085] [2024-06-27 23:20:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:31,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:32,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:32,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939549085] [2024-06-27 23:20:32,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939549085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:32,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:32,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:32,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743595210] [2024-06-27 23:20:32,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:32,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:32,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:32,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:33,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:33,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 144 transitions, 1368 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:33,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:33,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:33,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:33,324 INFO L124 PetriNetUnfolderBase]: 339/606 cut-off events. [2024-06-27 23:20:33,325 INFO L125 PetriNetUnfolderBase]: For 30268/30268 co-relation queries the response was YES. [2024-06-27 23:20:33,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4337 conditions, 606 events. 339/606 cut-off events. For 30268/30268 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2593 event pairs, 61 based on Foata normal form. 1/605 useless extension candidates. Maximal degree in co-relation 4254. Up to 573 conditions per place. [2024-06-27 23:20:33,330 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 138 selfloop transitions, 16 changer transitions 0/156 dead transitions. [2024-06-27 23:20:33,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 156 transitions, 1722 flow [2024-06-27 23:20:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 23:20:33,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-27 23:20:33,332 INFO L175 Difference]: Start difference. First operand has 168 places, 144 transitions, 1368 flow. Second operand 10 states and 104 transitions. [2024-06-27 23:20:33,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 156 transitions, 1722 flow [2024-06-27 23:20:33,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 156 transitions, 1665 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:33,389 INFO L231 Difference]: Finished difference. Result has 170 places, 146 transitions, 1372 flow [2024-06-27 23:20:33,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1372, PETRI_PLACES=170, PETRI_TRANSITIONS=146} [2024-06-27 23:20:33,390 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2024-06-27 23:20:33,390 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 146 transitions, 1372 flow [2024-06-27 23:20:33,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:33,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:33,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:33,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:20:33,391 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)] === [2024-06-27 23:20:33,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:33,391 INFO L85 PathProgramCache]: Analyzing trace with hash 71216348, now seen corresponding path program 3 times [2024-06-27 23:20:33,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:33,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836406433] [2024-06-27 23:20:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:33,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:34,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:34,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836406433] [2024-06-27 23:20:34,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836406433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:34,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:34,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:34,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549114400] [2024-06-27 23:20:34,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:34,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:34,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:34,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:34,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 146 transitions, 1372 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) [2024-06-27 23:20:34,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:34,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:34,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:35,182 INFO L124 PetriNetUnfolderBase]: 336/601 cut-off events. [2024-06-27 23:20:35,183 INFO L125 PetriNetUnfolderBase]: For 30633/30633 co-relation queries the response was YES. [2024-06-27 23:20:35,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 601 events. 336/601 cut-off events. For 30633/30633 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2559 event pairs, 60 based on Foata normal form. 2/601 useless extension candidates. Maximal degree in co-relation 4132. Up to 565 conditions per place. [2024-06-27 23:20:35,187 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 140 selfloop transitions, 15 changer transitions 0/157 dead transitions. [2024-06-27 23:20:35,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 157 transitions, 1710 flow [2024-06-27 23:20:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 23:20:35,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-27 23:20:35,188 INFO L175 Difference]: Start difference. First operand has 170 places, 146 transitions, 1372 flow. Second operand 9 states and 98 transitions. [2024-06-27 23:20:35,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 157 transitions, 1710 flow [2024-06-27 23:20:35,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 157 transitions, 1657 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:35,239 INFO L231 Difference]: Finished difference. Result has 171 places, 146 transitions, 1353 flow [2024-06-27 23:20:35,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1353, PETRI_PLACES=171, PETRI_TRANSITIONS=146} [2024-06-27 23:20:35,240 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-06-27 23:20:35,240 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 146 transitions, 1353 flow [2024-06-27 23:20:35,240 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) [2024-06-27 23:20:35,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:35,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:35,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:20:35,240 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)] === [2024-06-27 23:20:35,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1351739404, now seen corresponding path program 3 times [2024-06-27 23:20:35,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:35,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705534361] [2024-06-27 23:20:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:35,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:36,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:36,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705534361] [2024-06-27 23:20:36,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705534361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:36,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:36,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:36,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369464684] [2024-06-27 23:20:36,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:36,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:36,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:36,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:36,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:36,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 146 transitions, 1353 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:36,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:36,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:36,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:37,108 INFO L124 PetriNetUnfolderBase]: 334/598 cut-off events. [2024-06-27 23:20:37,108 INFO L125 PetriNetUnfolderBase]: For 29801/29801 co-relation queries the response was YES. [2024-06-27 23:20:37,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4154 conditions, 598 events. 334/598 cut-off events. For 29801/29801 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2546 event pairs, 60 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 4069. Up to 559 conditions per place. [2024-06-27 23:20:37,112 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2024-06-27 23:20:37,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 156 transitions, 1687 flow [2024-06-27 23:20:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 23:20:37,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-27 23:20:37,114 INFO L175 Difference]: Start difference. First operand has 171 places, 146 transitions, 1353 flow. Second operand 10 states and 106 transitions. [2024-06-27 23:20:37,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 156 transitions, 1687 flow [2024-06-27 23:20:37,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 156 transitions, 1649 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:37,181 INFO L231 Difference]: Finished difference. Result has 174 places, 146 transitions, 1358 flow [2024-06-27 23:20:37,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1358, PETRI_PLACES=174, PETRI_TRANSITIONS=146} [2024-06-27 23:20:37,182 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-27 23:20:37,182 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 146 transitions, 1358 flow [2024-06-27 23:20:37,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:37,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:37,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:37,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:20:37,183 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)] === [2024-06-27 23:20:37,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:37,183 INFO L85 PathProgramCache]: Analyzing trace with hash 186685458, now seen corresponding path program 2 times [2024-06-27 23:20:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:37,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897749529] [2024-06-27 23:20:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:37,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:38,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897749529] [2024-06-27 23:20:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897749529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:38,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:38,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:38,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560065995] [2024-06-27 23:20:38,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:38,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:38,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:38,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 146 transitions, 1358 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) [2024-06-27 23:20:38,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:38,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:38,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:38,822 INFO L124 PetriNetUnfolderBase]: 370/656 cut-off events. [2024-06-27 23:20:38,822 INFO L125 PetriNetUnfolderBase]: For 39261/39261 co-relation queries the response was YES. [2024-06-27 23:20:38,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4871 conditions, 656 events. 370/656 cut-off events. For 39261/39261 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2853 event pairs, 67 based on Foata normal form. 2/656 useless extension candidates. Maximal degree in co-relation 4785. Up to 482 conditions per place. [2024-06-27 23:20:38,827 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 121 selfloop transitions, 47 changer transitions 0/170 dead transitions. [2024-06-27 23:20:38,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 170 transitions, 2158 flow [2024-06-27 23:20:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:20:38,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033333333333333 [2024-06-27 23:20:38,829 INFO L175 Difference]: Start difference. First operand has 174 places, 146 transitions, 1358 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:20:38,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 170 transitions, 2158 flow [2024-06-27 23:20:38,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 170 transitions, 2105 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:38,894 INFO L231 Difference]: Finished difference. Result has 175 places, 154 transitions, 1552 flow [2024-06-27 23:20:38,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1552, PETRI_PLACES=175, PETRI_TRANSITIONS=154} [2024-06-27 23:20:38,895 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-27 23:20:38,895 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 154 transitions, 1552 flow [2024-06-27 23:20:38,895 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) [2024-06-27 23:20:38,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:38,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:38,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:20:38,896 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)] === [2024-06-27 23:20:38,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1236270604, now seen corresponding path program 4 times [2024-06-27 23:20:38,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:38,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480525855] [2024-06-27 23:20:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:38,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:40,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:40,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480525855] [2024-06-27 23:20:40,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480525855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:40,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:40,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337935307] [2024-06-27 23:20:40,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:40,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:40,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:40,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:40,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:40,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 154 transitions, 1552 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) [2024-06-27 23:20:40,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:40,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:40,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:40,426 INFO L124 PetriNetUnfolderBase]: 373/661 cut-off events. [2024-06-27 23:20:40,426 INFO L125 PetriNetUnfolderBase]: For 40267/40267 co-relation queries the response was YES. [2024-06-27 23:20:40,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5042 conditions, 661 events. 373/661 cut-off events. For 40267/40267 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2874 event pairs, 69 based on Foata normal form. 1/660 useless extension candidates. Maximal degree in co-relation 4955. Up to 586 conditions per place. [2024-06-27 23:20:40,431 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 128 selfloop transitions, 35 changer transitions 0/165 dead transitions. [2024-06-27 23:20:40,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 165 transitions, 1926 flow [2024-06-27 23:20:40,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:40,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:20:40,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-27 23:20:40,432 INFO L175 Difference]: Start difference. First operand has 175 places, 154 transitions, 1552 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:20:40,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 165 transitions, 1926 flow [2024-06-27 23:20:40,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 165 transitions, 1854 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 23:20:40,497 INFO L231 Difference]: Finished difference. Result has 180 places, 156 transitions, 1585 flow [2024-06-27 23:20:40,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1585, PETRI_PLACES=180, PETRI_TRANSITIONS=156} [2024-06-27 23:20:40,498 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2024-06-27 23:20:40,498 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 156 transitions, 1585 flow [2024-06-27 23:20:40,498 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) [2024-06-27 23:20:40,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:40,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:40,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:20:40,499 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)] === [2024-06-27 23:20:40,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:40,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1236448234, now seen corresponding path program 5 times [2024-06-27 23:20:40,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:40,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969059535] [2024-06-27 23:20:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:40,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:41,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:41,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969059535] [2024-06-27 23:20:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969059535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:41,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2362709] [2024-06-27 23:20:41,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:41,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:41,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:41,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:41,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 156 transitions, 1585 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:41,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:41,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:41,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:42,238 INFO L124 PetriNetUnfolderBase]: 381/674 cut-off events. [2024-06-27 23:20:42,239 INFO L125 PetriNetUnfolderBase]: For 42556/42556 co-relation queries the response was YES. [2024-06-27 23:20:42,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5185 conditions, 674 events. 381/674 cut-off events. For 42556/42556 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2938 event pairs, 67 based on Foata normal form. 1/673 useless extension candidates. Maximal degree in co-relation 5096. Up to 579 conditions per place. [2024-06-27 23:20:42,245 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 130 selfloop transitions, 42 changer transitions 0/174 dead transitions. [2024-06-27 23:20:42,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 174 transitions, 2241 flow [2024-06-27 23:20:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:20:42,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-27 23:20:42,247 INFO L175 Difference]: Start difference. First operand has 180 places, 156 transitions, 1585 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:20:42,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 174 transitions, 2241 flow [2024-06-27 23:20:42,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 174 transitions, 2152 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:42,327 INFO L231 Difference]: Finished difference. Result has 184 places, 162 transitions, 1699 flow [2024-06-27 23:20:42,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1699, PETRI_PLACES=184, PETRI_TRANSITIONS=162} [2024-06-27 23:20:42,328 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-27 23:20:42,328 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 162 transitions, 1699 flow [2024-06-27 23:20:42,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:42,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:42,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:42,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:20:42,329 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)] === [2024-06-27 23:20:42,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:42,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1236263908, now seen corresponding path program 3 times [2024-06-27 23:20:42,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:42,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249052869] [2024-06-27 23:20:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:42,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:43,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:43,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249052869] [2024-06-27 23:20:43,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249052869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:43,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:43,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:43,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877030912] [2024-06-27 23:20:43,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:43,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:43,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:43,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:43,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:43,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:43,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 162 transitions, 1699 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) [2024-06-27 23:20:43,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:43,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:43,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:44,181 INFO L124 PetriNetUnfolderBase]: 377/668 cut-off events. [2024-06-27 23:20:44,181 INFO L125 PetriNetUnfolderBase]: For 43279/43279 co-relation queries the response was YES. [2024-06-27 23:20:44,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5190 conditions, 668 events. 377/668 cut-off events. For 43279/43279 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2918 event pairs, 67 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 5099. Up to 497 conditions per place. [2024-06-27 23:20:44,186 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 124 selfloop transitions, 50 changer transitions 0/176 dead transitions. [2024-06-27 23:20:44,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 176 transitions, 2287 flow [2024-06-27 23:20:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:20:44,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-27 23:20:44,188 INFO L175 Difference]: Start difference. First operand has 184 places, 162 transitions, 1699 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:20:44,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 176 transitions, 2287 flow [2024-06-27 23:20:44,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 176 transitions, 2203 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 23:20:44,260 INFO L231 Difference]: Finished difference. Result has 189 places, 162 transitions, 1720 flow [2024-06-27 23:20:44,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1720, PETRI_PLACES=189, PETRI_TRANSITIONS=162} [2024-06-27 23:20:44,260 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-27 23:20:44,260 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 162 transitions, 1720 flow [2024-06-27 23:20:44,261 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) [2024-06-27 23:20:44,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:44,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:44,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:20:44,261 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)] === [2024-06-27 23:20:44,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:44,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1236443584, now seen corresponding path program 6 times [2024-06-27 23:20:44,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:44,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138533008] [2024-06-27 23:20:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:44,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:45,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138533008] [2024-06-27 23:20:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138533008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:45,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:45,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:45,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864793863] [2024-06-27 23:20:45,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:45,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:45,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:45,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:45,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:45,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 162 transitions, 1720 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) [2024-06-27 23:20:45,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:45,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:45,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:45,952 INFO L124 PetriNetUnfolderBase]: 375/665 cut-off events. [2024-06-27 23:20:45,953 INFO L125 PetriNetUnfolderBase]: For 42623/42623 co-relation queries the response was YES. [2024-06-27 23:20:45,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5204 conditions, 665 events. 375/665 cut-off events. For 42623/42623 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2910 event pairs, 68 based on Foata normal form. 1/664 useless extension candidates. Maximal degree in co-relation 5111. Up to 590 conditions per place. [2024-06-27 23:20:45,958 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 34 changer transitions 0/171 dead transitions. [2024-06-27 23:20:45,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 171 transitions, 2080 flow [2024-06-27 23:20:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:45,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:20:45,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:20:45,959 INFO L175 Difference]: Start difference. First operand has 189 places, 162 transitions, 1720 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:20:45,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 171 transitions, 2080 flow [2024-06-27 23:20:46,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 171 transitions, 1973 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:46,034 INFO L231 Difference]: Finished difference. Result has 190 places, 162 transitions, 1686 flow [2024-06-27 23:20:46,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1686, PETRI_PLACES=190, PETRI_TRANSITIONS=162} [2024-06-27 23:20:46,034 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-27 23:20:46,035 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 162 transitions, 1686 flow [2024-06-27 23:20:46,035 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) [2024-06-27 23:20:46,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:46,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:46,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:20:46,035 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)] === [2024-06-27 23:20:46,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1236443398, now seen corresponding path program 4 times [2024-06-27 23:20:46,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:46,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680764530] [2024-06-27 23:20:46,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:46,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:47,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:47,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680764530] [2024-06-27 23:20:47,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680764530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:47,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:47,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:47,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850659146] [2024-06-27 23:20:47,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:47,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:47,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:47,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:47,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:47,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:47,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 162 transitions, 1686 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) [2024-06-27 23:20:47,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:47,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:47,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:47,630 INFO L124 PetriNetUnfolderBase]: 371/659 cut-off events. [2024-06-27 23:20:47,630 INFO L125 PetriNetUnfolderBase]: For 42630/42630 co-relation queries the response was YES. [2024-06-27 23:20:47,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5024 conditions, 659 events. 371/659 cut-off events. For 42630/42630 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2871 event pairs, 66 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4930. Up to 491 conditions per place. [2024-06-27 23:20:47,635 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 127 selfloop transitions, 47 changer transitions 0/176 dead transitions. [2024-06-27 23:20:47,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 176 transitions, 2184 flow [2024-06-27 23:20:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:20:47,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 23:20:47,637 INFO L175 Difference]: Start difference. First operand has 190 places, 162 transitions, 1686 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:20:47,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 176 transitions, 2184 flow [2024-06-27 23:20:47,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 176 transitions, 2090 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:47,713 INFO L231 Difference]: Finished difference. Result has 191 places, 162 transitions, 1691 flow [2024-06-27 23:20:47,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1691, PETRI_PLACES=191, PETRI_TRANSITIONS=162} [2024-06-27 23:20:47,714 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-27 23:20:47,714 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 162 transitions, 1691 flow [2024-06-27 23:20:47,714 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) [2024-06-27 23:20:47,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:47,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:47,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:20:47,714 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)] === [2024-06-27 23:20:47,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash 186507518, now seen corresponding path program 4 times [2024-06-27 23:20:47,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:47,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783970045] [2024-06-27 23:20:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:47,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:49,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:49,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783970045] [2024-06-27 23:20:49,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783970045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:49,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:49,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:49,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603190341] [2024-06-27 23:20:49,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:49,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:49,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:49,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:49,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:49,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:49,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 162 transitions, 1691 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) [2024-06-27 23:20:49,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:49,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:49,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:49,444 INFO L124 PetriNetUnfolderBase]: 375/667 cut-off events. [2024-06-27 23:20:49,444 INFO L125 PetriNetUnfolderBase]: For 44620/44620 co-relation queries the response was YES. [2024-06-27 23:20:49,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5139 conditions, 667 events. 375/667 cut-off events. For 44620/44620 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2929 event pairs, 66 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 5044. Up to 616 conditions per place. [2024-06-27 23:20:49,449 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 149 selfloop transitions, 22 changer transitions 0/173 dead transitions. [2024-06-27 23:20:49,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 173 transitions, 2081 flow [2024-06-27 23:20:49,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:49,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 23:20:49,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-27 23:20:49,450 INFO L175 Difference]: Start difference. First operand has 191 places, 162 transitions, 1691 flow. Second operand 9 states and 101 transitions. [2024-06-27 23:20:49,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 173 transitions, 2081 flow [2024-06-27 23:20:49,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 173 transitions, 1960 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:49,526 INFO L231 Difference]: Finished difference. Result has 191 places, 163 transitions, 1644 flow [2024-06-27 23:20:49,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1644, PETRI_PLACES=191, PETRI_TRANSITIONS=163} [2024-06-27 23:20:49,527 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-27 23:20:49,527 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 163 transitions, 1644 flow [2024-06-27 23:20:49,527 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) [2024-06-27 23:20:49,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:49,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:49,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:20:49,528 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)] === [2024-06-27 23:20:49,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1705690926, now seen corresponding path program 7 times [2024-06-27 23:20:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815860180] [2024-06-27 23:20:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:50,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:50,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815860180] [2024-06-27 23:20:50,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815860180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:50,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:50,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:50,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082252488] [2024-06-27 23:20:50,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:50,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:50,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:50,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:50,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:50,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:50,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 163 transitions, 1644 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:50,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:50,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:50,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:51,204 INFO L124 PetriNetUnfolderBase]: 378/671 cut-off events. [2024-06-27 23:20:51,205 INFO L125 PetriNetUnfolderBase]: For 44520/44520 co-relation queries the response was YES. [2024-06-27 23:20:51,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 671 events. 378/671 cut-off events. For 44520/44520 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2947 event pairs, 65 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 5029. Up to 628 conditions per place. [2024-06-27 23:20:51,211 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 148 selfloop transitions, 23 changer transitions 0/173 dead transitions. [2024-06-27 23:20:51,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 173 transitions, 2038 flow [2024-06-27 23:20:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:51,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 23:20:51,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-27 23:20:51,212 INFO L175 Difference]: Start difference. First operand has 191 places, 163 transitions, 1644 flow. Second operand 10 states and 106 transitions. [2024-06-27 23:20:51,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 173 transitions, 2038 flow [2024-06-27 23:20:51,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 173 transitions, 1974 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:51,293 INFO L231 Difference]: Finished difference. Result has 194 places, 165 transitions, 1669 flow [2024-06-27 23:20:51,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1669, PETRI_PLACES=194, PETRI_TRANSITIONS=165} [2024-06-27 23:20:51,293 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-27 23:20:51,294 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 165 transitions, 1669 flow [2024-06-27 23:20:51,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:51,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:51,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:51,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:20:51,294 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)] === [2024-06-27 23:20:51,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:51,297 INFO L85 PathProgramCache]: Analyzing trace with hash 115348908, now seen corresponding path program 8 times [2024-06-27 23:20:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:51,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439937656] [2024-06-27 23:20:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:51,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:52,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:52,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439937656] [2024-06-27 23:20:52,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439937656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:52,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:52,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:52,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322070360] [2024-06-27 23:20:52,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:52,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:52,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:52,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:52,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:52,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:52,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 165 transitions, 1669 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) [2024-06-27 23:20:52,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:52,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:52,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:53,310 INFO L124 PetriNetUnfolderBase]: 386/684 cut-off events. [2024-06-27 23:20:53,310 INFO L125 PetriNetUnfolderBase]: For 47482/47482 co-relation queries the response was YES. [2024-06-27 23:20:53,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5305 conditions, 684 events. 386/684 cut-off events. For 47482/47482 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3014 event pairs, 66 based on Foata normal form. 1/683 useless extension candidates. Maximal degree in co-relation 5208. Up to 629 conditions per place. [2024-06-27 23:20:53,315 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 147 selfloop transitions, 29 changer transitions 0/178 dead transitions. [2024-06-27 23:20:53,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 178 transitions, 2225 flow [2024-06-27 23:20:53,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 23:20:53,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-27 23:20:53,317 INFO L175 Difference]: Start difference. First operand has 194 places, 165 transitions, 1669 flow. Second operand 9 states and 101 transitions. [2024-06-27 23:20:53,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 178 transitions, 2225 flow [2024-06-27 23:20:53,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 178 transitions, 2144 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:53,406 INFO L231 Difference]: Finished difference. Result has 195 places, 169 transitions, 1731 flow [2024-06-27 23:20:53,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1731, PETRI_PLACES=195, PETRI_TRANSITIONS=169} [2024-06-27 23:20:53,406 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-27 23:20:53,406 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 169 transitions, 1731 flow [2024-06-27 23:20:53,407 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) [2024-06-27 23:20:53,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:53,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:53,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:20:53,407 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)] === [2024-06-27 23:20:53,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:53,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1483222778, now seen corresponding path program 5 times [2024-06-27 23:20:53,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:53,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210849291] [2024-06-27 23:20:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:53,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:54,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:54,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210849291] [2024-06-27 23:20:54,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210849291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:54,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:54,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721557376] [2024-06-27 23:20:54,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:54,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:54,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:54,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:54,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:54,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:54,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 169 transitions, 1731 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) [2024-06-27 23:20:54,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:54,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:54,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:55,126 INFO L124 PetriNetUnfolderBase]: 382/678 cut-off events. [2024-06-27 23:20:55,126 INFO L125 PetriNetUnfolderBase]: For 47706/47706 co-relation queries the response was YES. [2024-06-27 23:20:55,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5202 conditions, 678 events. 382/678 cut-off events. For 47706/47706 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2992 event pairs, 57 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 5104. Up to 577 conditions per place. [2024-06-27 23:20:55,132 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 146 selfloop transitions, 34 changer transitions 0/182 dead transitions. [2024-06-27 23:20:55,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 182 transitions, 2244 flow [2024-06-27 23:20:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:20:55,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 23:20:55,133 INFO L175 Difference]: Start difference. First operand has 195 places, 169 transitions, 1731 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:20:55,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 182 transitions, 2244 flow [2024-06-27 23:20:55,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 182 transitions, 2155 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 23:20:55,225 INFO L231 Difference]: Finished difference. Result has 200 places, 169 transitions, 1715 flow [2024-06-27 23:20:55,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1715, PETRI_PLACES=200, PETRI_TRANSITIONS=169} [2024-06-27 23:20:55,226 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2024-06-27 23:20:55,226 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 169 transitions, 1715 flow [2024-06-27 23:20:55,226 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) [2024-06-27 23:20:55,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:55,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:55,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:20:55,227 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)] === [2024-06-27 23:20:55,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:55,227 INFO L85 PathProgramCache]: Analyzing trace with hash 115348784, now seen corresponding path program 5 times [2024-06-27 23:20:55,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:55,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415380111] [2024-06-27 23:20:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:55,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:56,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415380111] [2024-06-27 23:20:56,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415380111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:56,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:56,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:56,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606286340] [2024-06-27 23:20:56,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:56,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:56,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:56,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:56,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 169 transitions, 1715 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:56,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:56,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:56,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:57,129 INFO L124 PetriNetUnfolderBase]: 386/686 cut-off events. [2024-06-27 23:20:57,129 INFO L125 PetriNetUnfolderBase]: For 49601/49601 co-relation queries the response was YES. [2024-06-27 23:20:57,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5295 conditions, 686 events. 386/686 cut-off events. For 49601/49601 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3035 event pairs, 67 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 5195. Up to 655 conditions per place. [2024-06-27 23:20:57,135 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 162 selfloop transitions, 15 changer transitions 0/179 dead transitions. [2024-06-27 23:20:57,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 179 transitions, 2115 flow [2024-06-27 23:20:57,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 23:20:57,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 23:20:57,136 INFO L175 Difference]: Start difference. First operand has 200 places, 169 transitions, 1715 flow. Second operand 10 states and 102 transitions. [2024-06-27 23:20:57,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 179 transitions, 2115 flow [2024-06-27 23:20:57,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 179 transitions, 2024 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:57,232 INFO L231 Difference]: Finished difference. Result has 201 places, 170 transitions, 1686 flow [2024-06-27 23:20:57,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1686, PETRI_PLACES=201, PETRI_TRANSITIONS=170} [2024-06-27 23:20:57,232 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-27 23:20:57,233 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 170 transitions, 1686 flow [2024-06-27 23:20:57,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:57,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:57,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:57,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:20:57,233 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)] === [2024-06-27 23:20:57,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:57,234 INFO L85 PathProgramCache]: Analyzing trace with hash 115353558, now seen corresponding path program 9 times [2024-06-27 23:20:57,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:57,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020775579] [2024-06-27 23:20:57,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:57,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:58,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:58,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020775579] [2024-06-27 23:20:58,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020775579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:58,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:58,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:58,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272166034] [2024-06-27 23:20:58,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:58,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:58,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:58,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:58,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:58,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:20:58,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 170 transitions, 1686 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:58,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:58,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:20:58,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:58,875 INFO L124 PetriNetUnfolderBase]: 389/691 cut-off events. [2024-06-27 23:20:58,876 INFO L125 PetriNetUnfolderBase]: For 49260/49260 co-relation queries the response was YES. [2024-06-27 23:20:58,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5301 conditions, 691 events. 389/691 cut-off events. For 49260/49260 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3073 event pairs, 69 based on Foata normal form. 1/690 useless extension candidates. Maximal degree in co-relation 5200. Up to 648 conditions per place. [2024-06-27 23:20:58,881 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 154 selfloop transitions, 24 changer transitions 0/180 dead transitions. [2024-06-27 23:20:58,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 180 transitions, 2086 flow [2024-06-27 23:20:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:20:58,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:20:58,883 INFO L175 Difference]: Start difference. First operand has 201 places, 170 transitions, 1686 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:20:58,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 180 transitions, 2086 flow [2024-06-27 23:20:58,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 180 transitions, 2034 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:58,986 INFO L231 Difference]: Finished difference. Result has 203 places, 172 transitions, 1717 flow [2024-06-27 23:20:58,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1717, PETRI_PLACES=203, PETRI_TRANSITIONS=172} [2024-06-27 23:20:58,987 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 174 predicate places. [2024-06-27 23:20:58,987 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 172 transitions, 1717 flow [2024-06-27 23:20:58,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:58,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:58,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:58,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:20:58,987 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)] === [2024-06-27 23:20:58,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash 121789344, now seen corresponding path program 6 times [2024-06-27 23:20:58,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:58,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777320844] [2024-06-27 23:20:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:58,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:00,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:00,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:00,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777320844] [2024-06-27 23:21:00,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777320844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:00,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:00,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:00,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781962709] [2024-06-27 23:21:00,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:00,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:00,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:00,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:00,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 172 transitions, 1717 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) [2024-06-27 23:21:00,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:00,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:00,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:00,639 INFO L124 PetriNetUnfolderBase]: 395/701 cut-off events. [2024-06-27 23:21:00,639 INFO L125 PetriNetUnfolderBase]: For 52477/52477 co-relation queries the response was YES. [2024-06-27 23:21:00,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5372 conditions, 701 events. 395/701 cut-off events. For 52477/52477 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3134 event pairs, 67 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 5270. Up to 633 conditions per place. [2024-06-27 23:21:00,644 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 160 selfloop transitions, 24 changer transitions 0/186 dead transitions. [2024-06-27 23:21:00,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 186 transitions, 2377 flow [2024-06-27 23:21:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:21:00,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:21:00,653 INFO L175 Difference]: Start difference. First operand has 203 places, 172 transitions, 1717 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:21:00,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 186 transitions, 2377 flow [2024-06-27 23:21:00,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 186 transitions, 2314 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:00,749 INFO L231 Difference]: Finished difference. Result has 204 places, 174 transitions, 1733 flow [2024-06-27 23:21:00,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1654, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1733, PETRI_PLACES=204, PETRI_TRANSITIONS=174} [2024-06-27 23:21:00,750 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 175 predicate places. [2024-06-27 23:21:00,750 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 174 transitions, 1733 flow [2024-06-27 23:21:00,750 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) [2024-06-27 23:21:00,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:00,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:00,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:21:00,751 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)] === [2024-06-27 23:21:00,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash 351708594, now seen corresponding path program 7 times [2024-06-27 23:21:00,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:00,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372978800] [2024-06-27 23:21:00,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:00,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:01,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:01,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372978800] [2024-06-27 23:21:01,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372978800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:01,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:01,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:01,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005459112] [2024-06-27 23:21:01,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:01,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:01,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:01,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:01,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:01,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:01,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 174 transitions, 1733 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) [2024-06-27 23:21:01,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:01,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:01,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:02,114 INFO L124 PetriNetUnfolderBase]: 394/700 cut-off events. [2024-06-27 23:21:02,114 INFO L125 PetriNetUnfolderBase]: For 52635/52635 co-relation queries the response was YES. [2024-06-27 23:21:02,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5281 conditions, 700 events. 394/700 cut-off events. For 52635/52635 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3126 event pairs, 68 based on Foata normal form. 3/701 useless extension candidates. Maximal degree in co-relation 5178. Up to 655 conditions per place. [2024-06-27 23:21:02,119 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 161 selfloop transitions, 22 changer transitions 0/185 dead transitions. [2024-06-27 23:21:02,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 185 transitions, 2158 flow [2024-06-27 23:21:02,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:02,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:02,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:21:02,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:21:02,121 INFO L175 Difference]: Start difference. First operand has 204 places, 174 transitions, 1733 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:21:02,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 185 transitions, 2158 flow [2024-06-27 23:21:02,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 185 transitions, 2069 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 23:21:02,205 INFO L231 Difference]: Finished difference. Result has 208 places, 176 transitions, 1737 flow [2024-06-27 23:21:02,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1737, PETRI_PLACES=208, PETRI_TRANSITIONS=176} [2024-06-27 23:21:02,205 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 179 predicate places. [2024-06-27 23:21:02,206 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 176 transitions, 1737 flow [2024-06-27 23:21:02,206 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) [2024-06-27 23:21:02,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:02,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:02,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:21:02,206 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)] === [2024-06-27 23:21:02,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:02,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1711296908, now seen corresponding path program 8 times [2024-06-27 23:21:02,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:02,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514829279] [2024-06-27 23:21:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:02,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:03,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:03,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514829279] [2024-06-27 23:21:03,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514829279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:03,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:03,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:03,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230316680] [2024-06-27 23:21:03,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:03,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:03,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:03,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:03,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 176 transitions, 1737 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) [2024-06-27 23:21:03,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:03,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:03,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:03,788 INFO L124 PetriNetUnfolderBase]: 390/694 cut-off events. [2024-06-27 23:21:03,788 INFO L125 PetriNetUnfolderBase]: For 48621/48621 co-relation queries the response was YES. [2024-06-27 23:21:03,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5122 conditions, 694 events. 390/694 cut-off events. For 48621/48621 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3106 event pairs, 67 based on Foata normal form. 2/694 useless extension candidates. Maximal degree in co-relation 5018. Up to 654 conditions per place. [2024-06-27 23:21:03,794 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 164 selfloop transitions, 21 changer transitions 0/187 dead transitions. [2024-06-27 23:21:03,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 187 transitions, 2146 flow [2024-06-27 23:21:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 23:21:03,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 23:21:03,795 INFO L175 Difference]: Start difference. First operand has 208 places, 176 transitions, 1737 flow. Second operand 9 states and 100 transitions. [2024-06-27 23:21:03,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 187 transitions, 2146 flow [2024-06-27 23:21:03,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 187 transitions, 2036 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:03,871 INFO L231 Difference]: Finished difference. Result has 209 places, 178 transitions, 1697 flow [2024-06-27 23:21:03,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1697, PETRI_PLACES=209, PETRI_TRANSITIONS=178} [2024-06-27 23:21:03,872 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-27 23:21:03,872 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 178 transitions, 1697 flow [2024-06-27 23:21:03,872 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) [2024-06-27 23:21:03,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:03,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:03,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:21:03,873 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)] === [2024-06-27 23:21:03,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:03,873 INFO L85 PathProgramCache]: Analyzing trace with hash 343427688, now seen corresponding path program 10 times [2024-06-27 23:21:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:03,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71372426] [2024-06-27 23:21:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:05,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:05,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71372426] [2024-06-27 23:21:05,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71372426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:05,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:05,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:05,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3517208] [2024-06-27 23:21:05,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:05,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:05,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:05,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:05,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:05,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 178 transitions, 1697 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:05,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:05,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:05,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:05,585 INFO L124 PetriNetUnfolderBase]: 388/691 cut-off events. [2024-06-27 23:21:05,585 INFO L125 PetriNetUnfolderBase]: For 46229/46229 co-relation queries the response was YES. [2024-06-27 23:21:05,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4982 conditions, 691 events. 388/691 cut-off events. For 46229/46229 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3080 event pairs, 67 based on Foata normal form. 1/690 useless extension candidates. Maximal degree in co-relation 4877. Up to 663 conditions per place. [2024-06-27 23:21:05,591 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 16 changer transitions 0/186 dead transitions. [2024-06-27 23:21:05,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 186 transitions, 2083 flow [2024-06-27 23:21:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:05,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:05,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 23:21:05,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 23:21:05,592 INFO L175 Difference]: Start difference. First operand has 209 places, 178 transitions, 1697 flow. Second operand 10 states and 102 transitions. [2024-06-27 23:21:05,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 186 transitions, 2083 flow [2024-06-27 23:21:05,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 186 transitions, 2019 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:05,676 INFO L231 Difference]: Finished difference. Result has 212 places, 178 transitions, 1670 flow [2024-06-27 23:21:05,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1670, PETRI_PLACES=212, PETRI_TRANSITIONS=178} [2024-06-27 23:21:05,677 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-27 23:21:05,677 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 178 transitions, 1670 flow [2024-06-27 23:21:05,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:05,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:05,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:05,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:21:05,678 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)] === [2024-06-27 23:21:05,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:05,678 INFO L85 PathProgramCache]: Analyzing trace with hash 324201392, now seen corresponding path program 6 times [2024-06-27 23:21:05,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:05,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461545113] [2024-06-27 23:21:05,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:05,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:06,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:06,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461545113] [2024-06-27 23:21:06,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461545113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:06,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:06,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:21:06,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705870386] [2024-06-27 23:21:06,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:06,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:21:06,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:06,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:21:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:21:06,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:21:06,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 178 transitions, 1670 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2024-06-27 23:21:06,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:06,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:21:06,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:06,938 INFO L124 PetriNetUnfolderBase]: 374/693 cut-off events. [2024-06-27 23:21:06,938 INFO L125 PetriNetUnfolderBase]: For 54721/54724 co-relation queries the response was YES. [2024-06-27 23:21:06,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5055 conditions, 693 events. 374/693 cut-off events. For 54721/54724 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3262 event pairs, 23 based on Foata normal form. 3/694 useless extension candidates. Maximal degree in co-relation 4949. Up to 456 conditions per place. [2024-06-27 23:21:06,944 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 118 selfloop transitions, 37 changer transitions 0/197 dead transitions. [2024-06-27 23:21:06,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 197 transitions, 2204 flow [2024-06-27 23:21:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:21:06,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-06-27 23:21:06,945 INFO L175 Difference]: Start difference. First operand has 212 places, 178 transitions, 1670 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:21:06,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 197 transitions, 2204 flow [2024-06-27 23:21:07,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 197 transitions, 2153 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:07,049 INFO L231 Difference]: Finished difference. Result has 212 places, 181 transitions, 1766 flow [2024-06-27 23:21:07,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1766, PETRI_PLACES=212, PETRI_TRANSITIONS=181} [2024-06-27 23:21:07,050 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-27 23:21:07,050 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 181 transitions, 1766 flow [2024-06-27 23:21:07,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2024-06-27 23:21:07,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:07,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:07,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:21:07,051 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)] === [2024-06-27 23:21:07,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:07,051 INFO L85 PathProgramCache]: Analyzing trace with hash -252765814, now seen corresponding path program 11 times [2024-06-27 23:21:07,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:07,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842707913] [2024-06-27 23:21:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:07,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:08,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:08,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842707913] [2024-06-27 23:21:08,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842707913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:08,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:08,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:21:08,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051414076] [2024-06-27 23:21:08,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:08,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:21:08,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:08,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:21:08,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:21:08,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:08,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 181 transitions, 1766 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) [2024-06-27 23:21:08,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:08,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:08,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:08,655 INFO L124 PetriNetUnfolderBase]: 412/737 cut-off events. [2024-06-27 23:21:08,655 INFO L125 PetriNetUnfolderBase]: For 56240/56240 co-relation queries the response was YES. [2024-06-27 23:21:08,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5586 conditions, 737 events. 412/737 cut-off events. For 56240/56240 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3380 event pairs, 50 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 5479. Up to 620 conditions per place. [2024-06-27 23:21:08,662 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 154 selfloop transitions, 44 changer transitions 0/200 dead transitions. [2024-06-27 23:21:08,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 200 transitions, 2410 flow [2024-06-27 23:21:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:21:08,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-27 23:21:08,663 INFO L175 Difference]: Start difference. First operand has 212 places, 181 transitions, 1766 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:21:08,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 200 transitions, 2410 flow [2024-06-27 23:21:08,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 200 transitions, 2342 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 23:21:08,778 INFO L231 Difference]: Finished difference. Result has 216 places, 185 transitions, 1884 flow [2024-06-27 23:21:08,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1884, PETRI_PLACES=216, PETRI_TRANSITIONS=185} [2024-06-27 23:21:08,779 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-06-27 23:21:08,779 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 185 transitions, 1884 flow [2024-06-27 23:21:08,779 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) [2024-06-27 23:21:08,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:08,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:08,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:21:08,779 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)] === [2024-06-27 23:21:08,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash -163277928, now seen corresponding path program 7 times [2024-06-27 23:21:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394971901] [2024-06-27 23:21:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:10,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:10,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394971901] [2024-06-27 23:21:10,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394971901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:10,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:10,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:10,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333663467] [2024-06-27 23:21:10,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:10,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:10,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:10,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:10,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:10,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:10,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 185 transitions, 1884 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:10,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:10,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:10,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:10,722 INFO L124 PetriNetUnfolderBase]: 420/752 cut-off events. [2024-06-27 23:21:10,722 INFO L125 PetriNetUnfolderBase]: For 58455/58455 co-relation queries the response was YES. [2024-06-27 23:21:10,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 752 events. 420/752 cut-off events. For 58455/58455 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3492 event pairs, 26 based on Foata normal form. 2/752 useless extension candidates. Maximal degree in co-relation 5609. Up to 576 conditions per place. [2024-06-27 23:21:10,729 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 157 selfloop transitions, 46 changer transitions 0/205 dead transitions. [2024-06-27 23:21:10,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 205 transitions, 2497 flow [2024-06-27 23:21:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:21:10,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:21:10,738 INFO L175 Difference]: Start difference. First operand has 216 places, 185 transitions, 1884 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:21:10,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 205 transitions, 2497 flow [2024-06-27 23:21:10,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 205 transitions, 2407 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:10,842 INFO L231 Difference]: Finished difference. Result has 219 places, 187 transitions, 1933 flow [2024-06-27 23:21:10,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1933, PETRI_PLACES=219, PETRI_TRANSITIONS=187} [2024-06-27 23:21:10,842 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-27 23:21:10,842 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 187 transitions, 1933 flow [2024-06-27 23:21:10,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:10,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:10,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:10,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:21:10,843 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)] === [2024-06-27 23:21:10,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash 697089554, now seen corresponding path program 12 times [2024-06-27 23:21:10,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:10,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665453149] [2024-06-27 23:21:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:10,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:12,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:12,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665453149] [2024-06-27 23:21:12,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665453149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:12,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:12,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:12,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779193890] [2024-06-27 23:21:12,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:12,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:12,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:12,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:12,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:12,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 187 transitions, 1933 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:12,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:12,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:12,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:13,298 INFO L124 PetriNetUnfolderBase]: 468/830 cut-off events. [2024-06-27 23:21:13,299 INFO L125 PetriNetUnfolderBase]: For 70562/70562 co-relation queries the response was YES. [2024-06-27 23:21:13,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 830 events. 468/830 cut-off events. For 70562/70562 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3920 event pairs, 56 based on Foata normal form. 1/829 useless extension candidates. Maximal degree in co-relation 6678. Up to 715 conditions per place. [2024-06-27 23:21:13,305 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 183 selfloop transitions, 41 changer transitions 0/226 dead transitions. [2024-06-27 23:21:13,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 226 transitions, 3099 flow [2024-06-27 23:21:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:21:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:21:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 23:21:13,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-27 23:21:13,306 INFO L175 Difference]: Start difference. First operand has 219 places, 187 transitions, 1933 flow. Second operand 12 states and 143 transitions. [2024-06-27 23:21:13,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 226 transitions, 3099 flow [2024-06-27 23:21:13,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 226 transitions, 2975 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:13,443 INFO L231 Difference]: Finished difference. Result has 225 places, 202 transitions, 2198 flow [2024-06-27 23:21:13,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2198, PETRI_PLACES=225, PETRI_TRANSITIONS=202} [2024-06-27 23:21:13,443 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 196 predicate places. [2024-06-27 23:21:13,443 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 202 transitions, 2198 flow [2024-06-27 23:21:13,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:13,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:13,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:13,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:21:13,444 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)] === [2024-06-27 23:21:13,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:13,444 INFO L85 PathProgramCache]: Analyzing trace with hash 780202600, now seen corresponding path program 8 times [2024-06-27 23:21:13,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:13,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675442022] [2024-06-27 23:21:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:14,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:14,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675442022] [2024-06-27 23:21:14,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675442022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:14,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:14,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:14,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517334519] [2024-06-27 23:21:14,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:14,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:14,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:14,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:14,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:14,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:14,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 202 transitions, 2198 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) [2024-06-27 23:21:14,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:14,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:14,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:15,222 INFO L124 PetriNetUnfolderBase]: 472/838 cut-off events. [2024-06-27 23:21:15,222 INFO L125 PetriNetUnfolderBase]: For 73146/73146 co-relation queries the response was YES. [2024-06-27 23:21:15,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6860 conditions, 838 events. 472/838 cut-off events. For 73146/73146 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3995 event pairs, 61 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 6751. Up to 727 conditions per place. [2024-06-27 23:21:15,229 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 171 selfloop transitions, 46 changer transitions 0/219 dead transitions. [2024-06-27 23:21:15,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 219 transitions, 2695 flow [2024-06-27 23:21:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:15,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:21:15,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:21:15,231 INFO L175 Difference]: Start difference. First operand has 225 places, 202 transitions, 2198 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:21:15,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 219 transitions, 2695 flow [2024-06-27 23:21:15,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 219 transitions, 2598 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 23:21:15,376 INFO L231 Difference]: Finished difference. Result has 229 places, 203 transitions, 2227 flow [2024-06-27 23:21:15,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2227, PETRI_PLACES=229, PETRI_TRANSITIONS=203} [2024-06-27 23:21:15,376 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 200 predicate places. [2024-06-27 23:21:15,377 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 203 transitions, 2227 flow [2024-06-27 23:21:15,377 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) [2024-06-27 23:21:15,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:15,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:15,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:21:15,377 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)] === [2024-06-27 23:21:15,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash 783777520, now seen corresponding path program 9 times [2024-06-27 23:21:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:15,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045622197] [2024-06-27 23:21:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:15,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:16,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045622197] [2024-06-27 23:21:16,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045622197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:16,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:16,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:16,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709061125] [2024-06-27 23:21:16,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:16,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:16,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:16,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:16,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 203 transitions, 2227 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) [2024-06-27 23:21:16,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:16,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:16,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:17,052 INFO L124 PetriNetUnfolderBase]: 469/833 cut-off events. [2024-06-27 23:21:17,052 INFO L125 PetriNetUnfolderBase]: For 70764/70764 co-relation queries the response was YES. [2024-06-27 23:21:17,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6744 conditions, 833 events. 469/833 cut-off events. For 70764/70764 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3929 event pairs, 68 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 6634. Up to 761 conditions per place. [2024-06-27 23:21:17,059 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 185 selfloop transitions, 29 changer transitions 0/216 dead transitions. [2024-06-27 23:21:17,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 216 transitions, 2687 flow [2024-06-27 23:21:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:21:17,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:21:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:21:17,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-27 23:21:17,060 INFO L175 Difference]: Start difference. First operand has 229 places, 203 transitions, 2227 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:21:17,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 216 transitions, 2687 flow [2024-06-27 23:21:17,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 216 transitions, 2566 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:17,195 INFO L231 Difference]: Finished difference. Result has 229 places, 203 transitions, 2171 flow [2024-06-27 23:21:17,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2171, PETRI_PLACES=229, PETRI_TRANSITIONS=203} [2024-06-27 23:21:17,196 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 200 predicate places. [2024-06-27 23:21:17,196 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 203 transitions, 2171 flow [2024-06-27 23:21:17,196 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) [2024-06-27 23:21:17,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:17,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:17,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:21:17,197 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)] === [2024-06-27 23:21:17,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:17,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1381118022, now seen corresponding path program 13 times [2024-06-27 23:21:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:17,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302468049] [2024-06-27 23:21:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:17,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:18,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:18,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302468049] [2024-06-27 23:21:18,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302468049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:18,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:18,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:18,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961243444] [2024-06-27 23:21:18,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:18,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:18,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:18,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:18,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:18,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 203 transitions, 2171 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) [2024-06-27 23:21:18,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:18,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:18,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:19,004 INFO L124 PetriNetUnfolderBase]: 480/851 cut-off events. [2024-06-27 23:21:19,004 INFO L125 PetriNetUnfolderBase]: For 72615/72615 co-relation queries the response was YES. [2024-06-27 23:21:19,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 851 events. 480/851 cut-off events. For 72615/72615 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4052 event pairs, 68 based on Foata normal form. 2/851 useless extension candidates. Maximal degree in co-relation 6772. Up to 764 conditions per place. [2024-06-27 23:21:19,011 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 178 selfloop transitions, 42 changer transitions 0/222 dead transitions. [2024-06-27 23:21:19,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 222 transitions, 2893 flow [2024-06-27 23:21:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:21:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:21:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:21:19,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-27 23:21:19,013 INFO L175 Difference]: Start difference. First operand has 229 places, 203 transitions, 2171 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:21:19,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 222 transitions, 2893 flow [2024-06-27 23:21:19,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 222 transitions, 2813 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:19,136 INFO L231 Difference]: Finished difference. Result has 229 places, 209 transitions, 2313 flow [2024-06-27 23:21:19,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2313, PETRI_PLACES=229, PETRI_TRANSITIONS=209} [2024-06-27 23:21:19,136 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 200 predicate places. [2024-06-27 23:21:19,136 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 209 transitions, 2313 flow [2024-06-27 23:21:19,136 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) [2024-06-27 23:21:19,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:19,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:19,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:21:19,137 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)] === [2024-06-27 23:21:19,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:19,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1381267938, now seen corresponding path program 9 times [2024-06-27 23:21:19,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759776516] [2024-06-27 23:21:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:19,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:20,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:20,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759776516] [2024-06-27 23:21:20,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759776516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:20,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:20,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:20,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317725338] [2024-06-27 23:21:20,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:20,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:20,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:20,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:20,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:20,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:20,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 209 transitions, 2313 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) [2024-06-27 23:21:20,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:20,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:20,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:21,074 INFO L124 PetriNetUnfolderBase]: 476/845 cut-off events. [2024-06-27 23:21:21,074 INFO L125 PetriNetUnfolderBase]: For 69377/69377 co-relation queries the response was YES. [2024-06-27 23:21:21,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6730 conditions, 845 events. 476/845 cut-off events. For 69377/69377 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4018 event pairs, 63 based on Foata normal form. 2/845 useless extension candidates. Maximal degree in co-relation 6620. Up to 766 conditions per place. [2024-06-27 23:21:21,083 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 193 selfloop transitions, 32 changer transitions 0/227 dead transitions. [2024-06-27 23:21:21,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 227 transitions, 2943 flow [2024-06-27 23:21:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:21:21,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 23:21:21,104 INFO L175 Difference]: Start difference. First operand has 229 places, 209 transitions, 2313 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:21:21,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 227 transitions, 2943 flow [2024-06-27 23:21:21,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 227 transitions, 2825 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 23:21:21,258 INFO L231 Difference]: Finished difference. Result has 235 places, 209 transitions, 2266 flow [2024-06-27 23:21:21,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2266, PETRI_PLACES=235, PETRI_TRANSITIONS=209} [2024-06-27 23:21:21,258 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 206 predicate places. [2024-06-27 23:21:21,258 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 209 transitions, 2266 flow [2024-06-27 23:21:21,259 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) [2024-06-27 23:21:21,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:21,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:21,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:21:21,259 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)] === [2024-06-27 23:21:21,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1381262172, now seen corresponding path program 14 times [2024-06-27 23:21:21,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:21,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743428769] [2024-06-27 23:21:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:21,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:22,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:22,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743428769] [2024-06-27 23:21:22,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743428769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:22,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:22,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:22,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810918025] [2024-06-27 23:21:22,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:22,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:22,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:22,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:22,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:22,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 209 transitions, 2266 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) [2024-06-27 23:21:22,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:22,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:22,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:22,988 INFO L124 PetriNetUnfolderBase]: 472/839 cut-off events. [2024-06-27 23:21:22,988 INFO L125 PetriNetUnfolderBase]: For 64670/64670 co-relation queries the response was YES. [2024-06-27 23:21:22,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6519 conditions, 839 events. 472/839 cut-off events. For 64670/64670 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3986 event pairs, 67 based on Foata normal form. 2/839 useless extension candidates. Maximal degree in co-relation 6407. Up to 772 conditions per place. [2024-06-27 23:21:22,995 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 185 selfloop transitions, 34 changer transitions 0/221 dead transitions. [2024-06-27 23:21:22,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 221 transitions, 2734 flow [2024-06-27 23:21:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:21:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:21:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:21:22,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-27 23:21:22,996 INFO L175 Difference]: Start difference. First operand has 235 places, 209 transitions, 2266 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:21:22,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 221 transitions, 2734 flow [2024-06-27 23:21:23,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 221 transitions, 2638 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:23,127 INFO L231 Difference]: Finished difference. Result has 234 places, 209 transitions, 2249 flow [2024-06-27 23:21:23,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2249, PETRI_PLACES=234, PETRI_TRANSITIONS=209} [2024-06-27 23:21:23,128 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 205 predicate places. [2024-06-27 23:21:23,128 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 209 transitions, 2249 flow [2024-06-27 23:21:23,128 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) [2024-06-27 23:21:23,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:23,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:23,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:21:23,129 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)] === [2024-06-27 23:21:23,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:23,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1583619814, now seen corresponding path program 15 times [2024-06-27 23:21:23,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:23,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164779535] [2024-06-27 23:21:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:23,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:24,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:24,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164779535] [2024-06-27 23:21:24,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164779535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:24,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:24,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:24,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549916859] [2024-06-27 23:21:24,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:24,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:24,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:24,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 209 transitions, 2249 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) [2024-06-27 23:21:24,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:24,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:24,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:25,205 INFO L124 PetriNetUnfolderBase]: 480/852 cut-off events. [2024-06-27 23:21:25,206 INFO L125 PetriNetUnfolderBase]: For 66547/66547 co-relation queries the response was YES. [2024-06-27 23:21:25,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6676 conditions, 852 events. 480/852 cut-off events. For 66547/66547 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4069 event pairs, 52 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 6564. Up to 673 conditions per place. [2024-06-27 23:21:25,213 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 156 selfloop transitions, 72 changer transitions 0/230 dead transitions. [2024-06-27 23:21:25,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 230 transitions, 3059 flow [2024-06-27 23:21:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:21:25,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-27 23:21:25,214 INFO L175 Difference]: Start difference. First operand has 234 places, 209 transitions, 2249 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:21:25,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 230 transitions, 3059 flow [2024-06-27 23:21:25,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 230 transitions, 2954 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:25,356 INFO L231 Difference]: Finished difference. Result has 237 places, 211 transitions, 2390 flow [2024-06-27 23:21:25,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2390, PETRI_PLACES=237, PETRI_TRANSITIONS=211} [2024-06-27 23:21:25,358 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2024-06-27 23:21:25,358 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 211 transitions, 2390 flow [2024-06-27 23:21:25,358 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) [2024-06-27 23:21:25,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:25,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:25,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:21:25,358 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)] === [2024-06-27 23:21:25,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:25,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1583499658, now seen corresponding path program 10 times [2024-06-27 23:21:25,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:25,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33697041] [2024-06-27 23:21:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:25,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:26,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33697041] [2024-06-27 23:21:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33697041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:26,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:26,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:26,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804170615] [2024-06-27 23:21:26,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:26,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:26,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:26,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:26,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:26,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:26,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 211 transitions, 2390 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) [2024-06-27 23:21:26,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:26,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:26,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:27,136 INFO L124 PetriNetUnfolderBase]: 476/846 cut-off events. [2024-06-27 23:21:27,136 INFO L125 PetriNetUnfolderBase]: For 64787/64787 co-relation queries the response was YES. [2024-06-27 23:21:27,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6682 conditions, 846 events. 476/846 cut-off events. For 64787/64787 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4027 event pairs, 55 based on Foata normal form. 2/846 useless extension candidates. Maximal degree in co-relation 6568. Up to 794 conditions per place. [2024-06-27 23:21:27,143 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 200 selfloop transitions, 23 changer transitions 0/225 dead transitions. [2024-06-27 23:21:27,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 225 transitions, 2876 flow [2024-06-27 23:21:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:21:27,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 23:21:27,144 INFO L175 Difference]: Start difference. First operand has 237 places, 211 transitions, 2390 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:21:27,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 225 transitions, 2876 flow [2024-06-27 23:21:27,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 225 transitions, 2706 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:27,283 INFO L231 Difference]: Finished difference. Result has 237 places, 211 transitions, 2271 flow [2024-06-27 23:21:27,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2271, PETRI_PLACES=237, PETRI_TRANSITIONS=211} [2024-06-27 23:21:27,283 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2024-06-27 23:21:27,283 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 211 transitions, 2271 flow [2024-06-27 23:21:27,283 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) [2024-06-27 23:21:27,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:27,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:27,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:21:27,284 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)] === [2024-06-27 23:21:27,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:27,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1468208488, now seen corresponding path program 11 times [2024-06-27 23:21:27,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:27,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339750113] [2024-06-27 23:21:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:27,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:28,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:28,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339750113] [2024-06-27 23:21:28,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339750113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:28,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:28,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:28,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236637886] [2024-06-27 23:21:28,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:28,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:28,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:28,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:28,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:28,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:28,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 211 transitions, 2271 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) [2024-06-27 23:21:28,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:28,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:28,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:28,986 INFO L124 PetriNetUnfolderBase]: 482/857 cut-off events. [2024-06-27 23:21:28,986 INFO L125 PetriNetUnfolderBase]: For 62825/62825 co-relation queries the response was YES. [2024-06-27 23:21:28,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6540 conditions, 857 events. 482/857 cut-off events. For 62825/62825 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4107 event pairs, 54 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 6428. Up to 613 conditions per place. [2024-06-27 23:21:28,994 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 160 selfloop transitions, 70 changer transitions 0/232 dead transitions. [2024-06-27 23:21:28,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 232 transitions, 3007 flow [2024-06-27 23:21:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:21:28,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-27 23:21:28,995 INFO L175 Difference]: Start difference. First operand has 237 places, 211 transitions, 2271 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:21:28,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 232 transitions, 3007 flow [2024-06-27 23:21:29,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 232 transitions, 2924 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:29,121 INFO L231 Difference]: Finished difference. Result has 237 places, 215 transitions, 2429 flow [2024-06-27 23:21:29,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2429, PETRI_PLACES=237, PETRI_TRANSITIONS=215} [2024-06-27 23:21:29,122 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2024-06-27 23:21:29,122 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 215 transitions, 2429 flow [2024-06-27 23:21:29,122 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) [2024-06-27 23:21:29,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:29,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:29,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:21:29,123 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)] === [2024-06-27 23:21:29,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:29,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1468208674, now seen corresponding path program 16 times [2024-06-27 23:21:29,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:29,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450998479] [2024-06-27 23:21:29,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:29,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:30,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450998479] [2024-06-27 23:21:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450998479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:30,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:30,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509184358] [2024-06-27 23:21:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:30,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:30,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:30,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:30,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 215 transitions, 2429 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) [2024-06-27 23:21:30,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:30,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:30,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:30,905 INFO L124 PetriNetUnfolderBase]: 491/871 cut-off events. [2024-06-27 23:21:30,905 INFO L125 PetriNetUnfolderBase]: For 67200/67200 co-relation queries the response was YES. [2024-06-27 23:21:30,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6800 conditions, 871 events. 491/871 cut-off events. For 67200/67200 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4199 event pairs, 52 based on Foata normal form. 3/872 useless extension candidates. Maximal degree in co-relation 6687. Up to 610 conditions per place. [2024-06-27 23:21:30,913 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 155 selfloop transitions, 77 changer transitions 0/234 dead transitions. [2024-06-27 23:21:30,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 234 transitions, 3145 flow [2024-06-27 23:21:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:21:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:21:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-27 23:21:30,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:21:30,914 INFO L175 Difference]: Start difference. First operand has 237 places, 215 transitions, 2429 flow. Second operand 8 states and 120 transitions. [2024-06-27 23:21:30,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 234 transitions, 3145 flow [2024-06-27 23:21:31,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 234 transitions, 3010 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 23:21:31,036 INFO L231 Difference]: Finished difference. Result has 239 places, 218 transitions, 2531 flow [2024-06-27 23:21:31,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2531, PETRI_PLACES=239, PETRI_TRANSITIONS=218} [2024-06-27 23:21:31,036 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 210 predicate places. [2024-06-27 23:21:31,036 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 218 transitions, 2531 flow [2024-06-27 23:21:31,037 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) [2024-06-27 23:21:31,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:31,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:31,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:21:31,037 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)] === [2024-06-27 23:21:31,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:31,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1468213324, now seen corresponding path program 17 times [2024-06-27 23:21:31,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:31,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276131629] [2024-06-27 23:21:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:32,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:32,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276131629] [2024-06-27 23:21:32,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276131629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:32,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:32,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072671166] [2024-06-27 23:21:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:32,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:32,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:32,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:32,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:32,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 218 transitions, 2531 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) [2024-06-27 23:21:32,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:32,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:32,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:32,912 INFO L124 PetriNetUnfolderBase]: 504/892 cut-off events. [2024-06-27 23:21:32,912 INFO L125 PetriNetUnfolderBase]: For 68988/68988 co-relation queries the response was YES. [2024-06-27 23:21:32,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7260 conditions, 892 events. 504/892 cut-off events. For 68988/68988 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4323 event pairs, 52 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 7146. Up to 591 conditions per place. [2024-06-27 23:21:32,919 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 149 selfloop transitions, 88 changer transitions 0/239 dead transitions. [2024-06-27 23:21:32,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 239 transitions, 3441 flow [2024-06-27 23:21:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:21:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:21:32,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-27 23:21:32,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 23:21:32,920 INFO L175 Difference]: Start difference. First operand has 239 places, 218 transitions, 2531 flow. Second operand 8 states and 112 transitions. [2024-06-27 23:21:32,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 239 transitions, 3441 flow [2024-06-27 23:21:33,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 239 transitions, 3231 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:33,068 INFO L231 Difference]: Finished difference. Result has 241 places, 223 transitions, 2660 flow [2024-06-27 23:21:33,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2660, PETRI_PLACES=241, PETRI_TRANSITIONS=223} [2024-06-27 23:21:33,068 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 212 predicate places. [2024-06-27 23:21:33,068 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 223 transitions, 2660 flow [2024-06-27 23:21:33,068 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) [2024-06-27 23:21:33,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:33,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:33,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:21:33,069 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)] === [2024-06-27 23:21:33,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:33,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1468035694, now seen corresponding path program 18 times [2024-06-27 23:21:33,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:33,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396267646] [2024-06-27 23:21:33,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:33,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:34,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396267646] [2024-06-27 23:21:34,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396267646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:34,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:34,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:34,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959676140] [2024-06-27 23:21:34,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:34,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:34,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:34,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:34,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 223 transitions, 2660 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) [2024-06-27 23:21:34,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:34,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:34,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:34,818 INFO L124 PetriNetUnfolderBase]: 500/887 cut-off events. [2024-06-27 23:21:34,818 INFO L125 PetriNetUnfolderBase]: For 66688/66688 co-relation queries the response was YES. [2024-06-27 23:21:34,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7050 conditions, 887 events. 500/887 cut-off events. For 66688/66688 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4307 event pairs, 51 based on Foata normal form. 3/888 useless extension candidates. Maximal degree in co-relation 6935. Up to 619 conditions per place. [2024-06-27 23:21:34,826 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 156 selfloop transitions, 80 changer transitions 0/238 dead transitions. [2024-06-27 23:21:34,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 238 transitions, 3314 flow [2024-06-27 23:21:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:21:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:21:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-27 23:21:34,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-27 23:21:34,827 INFO L175 Difference]: Start difference. First operand has 241 places, 223 transitions, 2660 flow. Second operand 8 states and 117 transitions. [2024-06-27 23:21:34,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 238 transitions, 3314 flow [2024-06-27 23:21:34,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 238 transitions, 3127 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 23:21:34,974 INFO L231 Difference]: Finished difference. Result has 244 places, 223 transitions, 2647 flow [2024-06-27 23:21:34,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2647, PETRI_PLACES=244, PETRI_TRANSITIONS=223} [2024-06-27 23:21:34,975 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 215 predicate places. [2024-06-27 23:21:34,975 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 223 transitions, 2647 flow [2024-06-27 23:21:34,975 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) [2024-06-27 23:21:34,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:34,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:34,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:21:34,976 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)] === [2024-06-27 23:21:34,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:34,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1468028998, now seen corresponding path program 12 times [2024-06-27 23:21:34,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:34,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767362210] [2024-06-27 23:21:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767362210] [2024-06-27 23:21:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767362210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:36,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:36,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122133056] [2024-06-27 23:21:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:36,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:36,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:36,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 223 transitions, 2647 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) [2024-06-27 23:21:36,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:36,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:36,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:36,944 INFO L124 PetriNetUnfolderBase]: 506/898 cut-off events. [2024-06-27 23:21:36,944 INFO L125 PetriNetUnfolderBase]: For 63942/63942 co-relation queries the response was YES. [2024-06-27 23:21:36,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7148 conditions, 898 events. 506/898 cut-off events. For 63942/63942 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4374 event pairs, 54 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 7032. Up to 650 conditions per place. [2024-06-27 23:21:36,952 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 163 selfloop transitions, 76 changer transitions 0/241 dead transitions. [2024-06-27 23:21:36,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 241 transitions, 3347 flow [2024-06-27 23:21:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:36,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:21:36,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:21:36,953 INFO L175 Difference]: Start difference. First operand has 244 places, 223 transitions, 2647 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:21:36,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 241 transitions, 3347 flow [2024-06-27 23:21:37,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 241 transitions, 3174 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:21:37,104 INFO L231 Difference]: Finished difference. Result has 247 places, 225 transitions, 2671 flow [2024-06-27 23:21:37,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2476, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2671, PETRI_PLACES=247, PETRI_TRANSITIONS=225} [2024-06-27 23:21:37,105 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 218 predicate places. [2024-06-27 23:21:37,105 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 225 transitions, 2671 flow [2024-06-27 23:21:37,105 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) [2024-06-27 23:21:37,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:37,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:37,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:21:37,105 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)] === [2024-06-27 23:21:37,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:37,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1468035508, now seen corresponding path program 13 times [2024-06-27 23:21:37,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:37,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865542864] [2024-06-27 23:21:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:37,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:38,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:38,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865542864] [2024-06-27 23:21:38,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865542864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:38,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:38,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:38,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497562126] [2024-06-27 23:21:38,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:38,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:38,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:38,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:38,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:38,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 225 transitions, 2671 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) [2024-06-27 23:21:38,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:38,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:38,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:38,775 INFO L124 PetriNetUnfolderBase]: 500/888 cut-off events. [2024-06-27 23:21:38,775 INFO L125 PetriNetUnfolderBase]: For 61345/61345 co-relation queries the response was YES. [2024-06-27 23:21:38,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6934 conditions, 888 events. 500/888 cut-off events. For 61345/61345 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4312 event pairs, 53 based on Foata normal form. 2/888 useless extension candidates. Maximal degree in co-relation 6817. Up to 643 conditions per place. [2024-06-27 23:21:38,783 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 165 selfloop transitions, 74 changer transitions 0/241 dead transitions. [2024-06-27 23:21:38,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 241 transitions, 3203 flow [2024-06-27 23:21:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:21:38,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-27 23:21:38,784 INFO L175 Difference]: Start difference. First operand has 247 places, 225 transitions, 2671 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:21:38,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 241 transitions, 3203 flow [2024-06-27 23:21:38,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 241 transitions, 3021 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 23:21:38,926 INFO L231 Difference]: Finished difference. Result has 251 places, 225 transitions, 2642 flow [2024-06-27 23:21:38,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2642, PETRI_PLACES=251, PETRI_TRANSITIONS=225} [2024-06-27 23:21:38,926 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2024-06-27 23:21:38,926 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 225 transitions, 2642 flow [2024-06-27 23:21:38,926 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) [2024-06-27 23:21:38,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:38,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:38,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:21:38,927 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)] === [2024-06-27 23:21:38,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:38,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1468213448, now seen corresponding path program 10 times [2024-06-27 23:21:38,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:38,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63116555] [2024-06-27 23:21:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:38,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:40,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:40,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63116555] [2024-06-27 23:21:40,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63116555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:40,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:40,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:40,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060059151] [2024-06-27 23:21:40,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:40,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:40,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:40,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:40,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:40,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 225 transitions, 2642 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) [2024-06-27 23:21:40,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:40,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:40,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:40,831 INFO L124 PetriNetUnfolderBase]: 497/882 cut-off events. [2024-06-27 23:21:40,831 INFO L125 PetriNetUnfolderBase]: For 58050/58050 co-relation queries the response was YES. [2024-06-27 23:21:40,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6725 conditions, 882 events. 497/882 cut-off events. For 58050/58050 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4273 event pairs, 62 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 6606. Up to 794 conditions per place. [2024-06-27 23:21:40,839 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 196 selfloop transitions, 38 changer transitions 0/236 dead transitions. [2024-06-27 23:21:40,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 236 transitions, 3136 flow [2024-06-27 23:21:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:21:40,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 23:21:40,840 INFO L175 Difference]: Start difference. First operand has 251 places, 225 transitions, 2642 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:21:40,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 236 transitions, 3136 flow [2024-06-27 23:21:40,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 236 transitions, 2952 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:21:40,986 INFO L231 Difference]: Finished difference. Result has 249 places, 225 transitions, 2540 flow [2024-06-27 23:21:40,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2540, PETRI_PLACES=249, PETRI_TRANSITIONS=225} [2024-06-27 23:21:40,986 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2024-06-27 23:21:40,987 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 225 transitions, 2540 flow [2024-06-27 23:21:40,987 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) [2024-06-27 23:21:40,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:40,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:40,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:21:40,987 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)] === [2024-06-27 23:21:40,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:40,988 INFO L85 PathProgramCache]: Analyzing trace with hash 957183208, now seen corresponding path program 1 times [2024-06-27 23:21:40,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:40,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341936489] [2024-06-27 23:21:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:40,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:42,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341936489] [2024-06-27 23:21:42,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341936489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:42,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:42,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:42,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948187799] [2024-06-27 23:21:42,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:42,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:42,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:42,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:42,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:42,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:42,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 225 transitions, 2540 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) [2024-06-27 23:21:42,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:42,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:42,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:43,186 INFO L124 PetriNetUnfolderBase]: 508/904 cut-off events. [2024-06-27 23:21:43,187 INFO L125 PetriNetUnfolderBase]: For 64945/64945 co-relation queries the response was YES. [2024-06-27 23:21:43,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6925 conditions, 904 events. 508/904 cut-off events. For 64945/64945 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4446 event pairs, 109 based on Foata normal form. 2/904 useless extension candidates. Maximal degree in co-relation 6805. Up to 795 conditions per place. [2024-06-27 23:21:43,196 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 217 selfloop transitions, 26 changer transitions 0/245 dead transitions. [2024-06-27 23:21:43,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 245 transitions, 3258 flow [2024-06-27 23:21:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:43,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:21:43,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 23:21:43,197 INFO L175 Difference]: Start difference. First operand has 249 places, 225 transitions, 2540 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:21:43,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 245 transitions, 3258 flow [2024-06-27 23:21:43,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 245 transitions, 3094 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:43,358 INFO L231 Difference]: Finished difference. Result has 251 places, 227 transitions, 2484 flow [2024-06-27 23:21:43,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2484, PETRI_PLACES=251, PETRI_TRANSITIONS=227} [2024-06-27 23:21:43,358 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2024-06-27 23:21:43,359 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 227 transitions, 2484 flow [2024-06-27 23:21:43,359 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) [2024-06-27 23:21:43,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:43,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:43,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:21:43,359 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)] === [2024-06-27 23:21:43,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:43,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2121016354, now seen corresponding path program 2 times [2024-06-27 23:21:43,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:43,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799542660] [2024-06-27 23:21:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:43,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:44,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:44,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799542660] [2024-06-27 23:21:44,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799542660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:44,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:44,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:44,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204561635] [2024-06-27 23:21:44,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:44,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:44,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:44,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:45,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:45,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 227 transitions, 2484 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) [2024-06-27 23:21:45,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:45,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:45,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:45,395 INFO L124 PetriNetUnfolderBase]: 519/925 cut-off events. [2024-06-27 23:21:45,395 INFO L125 PetriNetUnfolderBase]: For 69525/69525 co-relation queries the response was YES. [2024-06-27 23:21:45,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7082 conditions, 925 events. 519/925 cut-off events. For 69525/69525 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4585 event pairs, 114 based on Foata normal form. 2/925 useless extension candidates. Maximal degree in co-relation 6962. Up to 852 conditions per place. [2024-06-27 23:21:45,403 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 217 selfloop transitions, 26 changer transitions 0/245 dead transitions. [2024-06-27 23:21:45,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 245 transitions, 3200 flow [2024-06-27 23:21:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:21:45,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:21:45,406 INFO L175 Difference]: Start difference. First operand has 251 places, 227 transitions, 2484 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:21:45,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 245 transitions, 3200 flow [2024-06-27 23:21:45,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 245 transitions, 3040 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-27 23:21:45,575 INFO L231 Difference]: Finished difference. Result has 251 places, 229 transitions, 2434 flow [2024-06-27 23:21:45,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2434, PETRI_PLACES=251, PETRI_TRANSITIONS=229} [2024-06-27 23:21:45,576 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2024-06-27 23:21:45,576 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 229 transitions, 2434 flow [2024-06-27 23:21:45,576 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) [2024-06-27 23:21:45,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:45,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:45,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:21:45,576 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)] === [2024-06-27 23:21:45,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:45,577 INFO L85 PathProgramCache]: Analyzing trace with hash 959061033, now seen corresponding path program 1 times [2024-06-27 23:21:45,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:45,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415384598] [2024-06-27 23:21:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:45,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:47,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:47,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415384598] [2024-06-27 23:21:47,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415384598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:47,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:47,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:47,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672219859] [2024-06-27 23:21:47,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:47,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:47,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:47,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:47,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:47,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 229 transitions, 2434 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) [2024-06-27 23:21:47,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:47,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:47,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:47,927 INFO L124 PetriNetUnfolderBase]: 535/951 cut-off events. [2024-06-27 23:21:47,928 INFO L125 PetriNetUnfolderBase]: For 76490/76490 co-relation queries the response was YES. [2024-06-27 23:21:47,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7214 conditions, 951 events. 535/951 cut-off events. For 76490/76490 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4725 event pairs, 116 based on Foata normal form. 2/951 useless extension candidates. Maximal degree in co-relation 7096. Up to 884 conditions per place. [2024-06-27 23:21:47,939 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 221 selfloop transitions, 26 changer transitions 0/249 dead transitions. [2024-06-27 23:21:47,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 249 transitions, 3212 flow [2024-06-27 23:21:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:21:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:21:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 23:21:47,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 23:21:47,940 INFO L175 Difference]: Start difference. First operand has 251 places, 229 transitions, 2434 flow. Second operand 12 states and 130 transitions. [2024-06-27 23:21:47,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 249 transitions, 3212 flow [2024-06-27 23:21:48,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 249 transitions, 3170 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:48,109 INFO L231 Difference]: Finished difference. Result has 256 places, 233 transitions, 2549 flow [2024-06-27 23:21:48,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2549, PETRI_PLACES=256, PETRI_TRANSITIONS=233} [2024-06-27 23:21:48,109 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-27 23:21:48,109 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 233 transitions, 2549 flow [2024-06-27 23:21:48,110 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) [2024-06-27 23:21:48,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:48,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:48,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:21:48,110 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)] === [2024-06-27 23:21:48,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:48,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2121020074, now seen corresponding path program 3 times [2024-06-27 23:21:48,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:48,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228872841] [2024-06-27 23:21:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:48,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:49,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:49,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228872841] [2024-06-27 23:21:49,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228872841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:49,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:49,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:49,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436320415] [2024-06-27 23:21:49,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:49,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:49,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:49,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:49,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:49,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:49,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 233 transitions, 2549 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) [2024-06-27 23:21:49,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:49,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:49,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:50,226 INFO L124 PetriNetUnfolderBase]: 532/946 cut-off events. [2024-06-27 23:21:50,227 INFO L125 PetriNetUnfolderBase]: For 73710/73710 co-relation queries the response was YES. [2024-06-27 23:21:50,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7125 conditions, 946 events. 532/946 cut-off events. For 73710/73710 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4714 event pairs, 115 based on Foata normal form. 2/946 useless extension candidates. Maximal degree in co-relation 7005. Up to 890 conditions per place. [2024-06-27 23:21:50,235 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 220 selfloop transitions, 25 changer transitions 0/247 dead transitions. [2024-06-27 23:21:50,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 247 transitions, 3075 flow [2024-06-27 23:21:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:21:50,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:21:50,236 INFO L175 Difference]: Start difference. First operand has 256 places, 233 transitions, 2549 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:21:50,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 247 transitions, 3075 flow [2024-06-27 23:21:50,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 247 transitions, 2983 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:50,411 INFO L231 Difference]: Finished difference. Result has 259 places, 233 transitions, 2511 flow [2024-06-27 23:21:50,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2511, PETRI_PLACES=259, PETRI_TRANSITIONS=233} [2024-06-27 23:21:50,412 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-27 23:21:50,412 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 233 transitions, 2511 flow [2024-06-27 23:21:50,412 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) [2024-06-27 23:21:50,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:50,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:50,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:21:50,413 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)] === [2024-06-27 23:21:50,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:50,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1045896838, now seen corresponding path program 4 times [2024-06-27 23:21:50,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:50,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66358538] [2024-06-27 23:21:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:50,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:51,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:51,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66358538] [2024-06-27 23:21:51,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66358538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:51,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:51,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:51,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91076555] [2024-06-27 23:21:51,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:51,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:51,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:51,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:52,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:52,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 233 transitions, 2511 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) [2024-06-27 23:21:52,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:52,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:52,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:52,449 INFO L124 PetriNetUnfolderBase]: 536/954 cut-off events. [2024-06-27 23:21:52,450 INFO L125 PetriNetUnfolderBase]: For 75502/75502 co-relation queries the response was YES. [2024-06-27 23:21:52,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7128 conditions, 954 events. 536/954 cut-off events. For 75502/75502 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4754 event pairs, 117 based on Foata normal form. 2/954 useless extension candidates. Maximal degree in co-relation 7006. Up to 915 conditions per place. [2024-06-27 23:21:52,458 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 227 selfloop transitions, 17 changer transitions 0/246 dead transitions. [2024-06-27 23:21:52,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 246 transitions, 3045 flow [2024-06-27 23:21:52,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 23:21:52,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-27 23:21:52,459 INFO L175 Difference]: Start difference. First operand has 259 places, 233 transitions, 2511 flow. Second operand 11 states and 113 transitions. [2024-06-27 23:21:52,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 246 transitions, 3045 flow [2024-06-27 23:21:52,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 246 transitions, 2993 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:52,631 INFO L231 Difference]: Finished difference. Result has 260 places, 234 transitions, 2515 flow [2024-06-27 23:21:52,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2515, PETRI_PLACES=260, PETRI_TRANSITIONS=234} [2024-06-27 23:21:52,631 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-27 23:21:52,631 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 234 transitions, 2515 flow [2024-06-27 23:21:52,631 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) [2024-06-27 23:21:52,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:52,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:52,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:21:52,632 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)] === [2024-06-27 23:21:52,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash 186427817, now seen corresponding path program 2 times [2024-06-27 23:21:52,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:52,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309079033] [2024-06-27 23:21:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:52,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:54,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:54,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309079033] [2024-06-27 23:21:54,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309079033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:54,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:54,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:54,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827926494] [2024-06-27 23:21:54,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:54,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:54,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:54,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 234 transitions, 2515 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) [2024-06-27 23:21:54,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:54,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:54,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:54,604 INFO L124 PetriNetUnfolderBase]: 542/964 cut-off events. [2024-06-27 23:21:54,604 INFO L125 PetriNetUnfolderBase]: For 77731/77731 co-relation queries the response was YES. [2024-06-27 23:21:54,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7222 conditions, 964 events. 542/964 cut-off events. For 77731/77731 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4815 event pairs, 117 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 7099. Up to 925 conditions per place. [2024-06-27 23:21:54,613 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 228 selfloop transitions, 20 changer transitions 0/250 dead transitions. [2024-06-27 23:21:54,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 250 transitions, 3105 flow [2024-06-27 23:21:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:21:54,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-27 23:21:54,614 INFO L175 Difference]: Start difference. First operand has 260 places, 234 transitions, 2515 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:21:54,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 250 transitions, 3105 flow [2024-06-27 23:21:54,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 250 transitions, 3061 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:54,801 INFO L231 Difference]: Finished difference. Result has 263 places, 238 transitions, 2591 flow [2024-06-27 23:21:54,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2591, PETRI_PLACES=263, PETRI_TRANSITIONS=238} [2024-06-27 23:21:54,802 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 234 predicate places. [2024-06-27 23:21:54,802 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 238 transitions, 2591 flow [2024-06-27 23:21:54,802 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) [2024-06-27 23:21:54,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:54,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:54,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:21:54,802 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)] === [2024-06-27 23:21:54,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:54,803 INFO L85 PathProgramCache]: Analyzing trace with hash 186279792, now seen corresponding path program 5 times [2024-06-27 23:21:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72026755] [2024-06-27 23:21:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:54,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:56,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:56,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72026755] [2024-06-27 23:21:56,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72026755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:56,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:56,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818281696] [2024-06-27 23:21:56,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:56,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:56,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:56,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:56,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:56,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:56,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 238 transitions, 2591 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) [2024-06-27 23:21:56,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:56,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:56,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:57,086 INFO L124 PetriNetUnfolderBase]: 546/972 cut-off events. [2024-06-27 23:21:57,086 INFO L125 PetriNetUnfolderBase]: For 81743/81743 co-relation queries the response was YES. [2024-06-27 23:21:57,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7381 conditions, 972 events. 546/972 cut-off events. For 81743/81743 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4869 event pairs, 115 based on Foata normal form. 2/972 useless extension candidates. Maximal degree in co-relation 7256. Up to 904 conditions per place. [2024-06-27 23:21:57,096 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 229 selfloop transitions, 22 changer transitions 0/253 dead transitions. [2024-06-27 23:21:57,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 253 transitions, 3295 flow [2024-06-27 23:21:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:21:57,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-27 23:21:57,097 INFO L175 Difference]: Start difference. First operand has 263 places, 238 transitions, 2591 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:21:57,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 253 transitions, 3295 flow [2024-06-27 23:21:57,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 253 transitions, 3222 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:57,312 INFO L231 Difference]: Finished difference. Result has 267 places, 239 transitions, 2584 flow [2024-06-27 23:21:57,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2584, PETRI_PLACES=267, PETRI_TRANSITIONS=239} [2024-06-27 23:21:57,312 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 238 predicate places. [2024-06-27 23:21:57,312 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 239 transitions, 2584 flow [2024-06-27 23:21:57,313 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) [2024-06-27 23:21:57,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:57,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:57,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:21:57,313 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)] === [2024-06-27 23:21:57,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1045752688, now seen corresponding path program 6 times [2024-06-27 23:21:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:57,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910202786] [2024-06-27 23:21:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:57,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:58,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:58,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910202786] [2024-06-27 23:21:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910202786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:58,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:58,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:58,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949805776] [2024-06-27 23:21:58,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:58,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:58,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:58,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:58,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:58,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:21:58,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 239 transitions, 2584 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) [2024-06-27 23:21:58,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:58,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:21:58,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:59,364 INFO L124 PetriNetUnfolderBase]: 543/967 cut-off events. [2024-06-27 23:21:59,365 INFO L125 PetriNetUnfolderBase]: For 77996/77996 co-relation queries the response was YES. [2024-06-27 23:21:59,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7222 conditions, 967 events. 543/967 cut-off events. For 77996/77996 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4849 event pairs, 116 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 7095. Up to 922 conditions per place. [2024-06-27 23:21:59,373 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 229 selfloop transitions, 20 changer transitions 0/251 dead transitions. [2024-06-27 23:21:59,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 251 transitions, 3112 flow [2024-06-27 23:21:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:59,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 23:21:59,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 23:21:59,374 INFO L175 Difference]: Start difference. First operand has 267 places, 239 transitions, 2584 flow. Second operand 11 states and 115 transitions. [2024-06-27 23:21:59,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 251 transitions, 3112 flow [2024-06-27 23:21:59,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 251 transitions, 3024 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:59,570 INFO L231 Difference]: Finished difference. Result has 268 places, 239 transitions, 2540 flow [2024-06-27 23:21:59,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2540, PETRI_PLACES=268, PETRI_TRANSITIONS=239} [2024-06-27 23:21:59,571 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-27 23:21:59,571 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 239 transitions, 2540 flow [2024-06-27 23:21:59,571 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) [2024-06-27 23:21:59,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:59,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:59,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:21:59,572 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)] === [2024-06-27 23:21:59,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:59,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1045752843, now seen corresponding path program 3 times [2024-06-27 23:21:59,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:59,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904998794] [2024-06-27 23:21:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:59,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:00,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:00,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904998794] [2024-06-27 23:22:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904998794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:00,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:00,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989004233] [2024-06-27 23:22:00,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:00,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:00,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:00,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:01,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:01,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 239 transitions, 2540 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) [2024-06-27 23:22:01,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:01,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:01,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:01,471 INFO L124 PetriNetUnfolderBase]: 539/961 cut-off events. [2024-06-27 23:22:01,471 INFO L125 PetriNetUnfolderBase]: For 73760/73760 co-relation queries the response was YES. [2024-06-27 23:22:01,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 961 events. 539/961 cut-off events. For 73760/73760 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4815 event pairs, 115 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 6829. Up to 913 conditions per place. [2024-06-27 23:22:01,480 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 227 selfloop transitions, 24 changer transitions 0/253 dead transitions. [2024-06-27 23:22:01,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 253 transitions, 3102 flow [2024-06-27 23:22:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:22:01,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:22:01,481 INFO L175 Difference]: Start difference. First operand has 268 places, 239 transitions, 2540 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:22:01,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 253 transitions, 3102 flow [2024-06-27 23:22:01,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 253 transitions, 3024 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:01,687 INFO L231 Difference]: Finished difference. Result has 270 places, 241 transitions, 2552 flow [2024-06-27 23:22:01,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2472, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2552, PETRI_PLACES=270, PETRI_TRANSITIONS=241} [2024-06-27 23:22:01,688 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-27 23:22:01,688 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 241 transitions, 2552 flow [2024-06-27 23:22:01,688 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) [2024-06-27 23:22:01,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:01,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:01,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:22:01,688 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)] === [2024-06-27 23:22:01,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:01,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2087105527, now seen corresponding path program 4 times [2024-06-27 23:22:01,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:01,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14919140] [2024-06-27 23:22:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:01,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:03,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:03,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14919140] [2024-06-27 23:22:03,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14919140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:03,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:03,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:03,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259986118] [2024-06-27 23:22:03,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:03,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:03,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:03,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:03,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:03,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 241 transitions, 2552 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) [2024-06-27 23:22:03,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:03,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:03,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:03,860 INFO L124 PetriNetUnfolderBase]: 545/971 cut-off events. [2024-06-27 23:22:03,861 INFO L125 PetriNetUnfolderBase]: For 77310/77310 co-relation queries the response was YES. [2024-06-27 23:22:03,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7105 conditions, 971 events. 545/971 cut-off events. For 77310/77310 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4861 event pairs, 117 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 6976. Up to 927 conditions per place. [2024-06-27 23:22:03,869 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 236 selfloop transitions, 18 changer transitions 0/256 dead transitions. [2024-06-27 23:22:03,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 256 transitions, 3142 flow [2024-06-27 23:22:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 23:22:03,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 23:22:03,870 INFO L175 Difference]: Start difference. First operand has 270 places, 241 transitions, 2552 flow. Second operand 11 states and 115 transitions. [2024-06-27 23:22:03,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 256 transitions, 3142 flow [2024-06-27 23:22:04,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 256 transitions, 3049 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:04,072 INFO L231 Difference]: Finished difference. Result has 271 places, 243 transitions, 2538 flow [2024-06-27 23:22:04,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2538, PETRI_PLACES=271, PETRI_TRANSITIONS=243} [2024-06-27 23:22:04,073 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 242 predicate places. [2024-06-27 23:22:04,073 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 243 transitions, 2538 flow [2024-06-27 23:22:04,073 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) [2024-06-27 23:22:04,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:04,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:04,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:22:04,074 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)] === [2024-06-27 23:22:04,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:04,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1486915163, now seen corresponding path program 5 times [2024-06-27 23:22:04,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:04,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794725257] [2024-06-27 23:22:04,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:04,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:05,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:05,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794725257] [2024-06-27 23:22:05,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794725257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:05,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:05,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:05,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868725400] [2024-06-27 23:22:05,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:05,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:05,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:05,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:05,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:05,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 243 transitions, 2538 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) [2024-06-27 23:22:05,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:05,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:05,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:05,996 INFO L124 PetriNetUnfolderBase]: 551/981 cut-off events. [2024-06-27 23:22:05,996 INFO L125 PetriNetUnfolderBase]: For 79507/79507 co-relation queries the response was YES. [2024-06-27 23:22:06,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7182 conditions, 981 events. 551/981 cut-off events. For 79507/79507 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4939 event pairs, 123 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 7053. Up to 882 conditions per place. [2024-06-27 23:22:06,007 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 210 selfloop transitions, 44 changer transitions 0/256 dead transitions. [2024-06-27 23:22:06,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 256 transitions, 3132 flow [2024-06-27 23:22:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:22:06,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 23:22:06,008 INFO L175 Difference]: Start difference. First operand has 271 places, 243 transitions, 2538 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:22:06,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 256 transitions, 3132 flow [2024-06-27 23:22:06,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 256 transitions, 3073 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:06,269 INFO L231 Difference]: Finished difference. Result has 273 places, 245 transitions, 2628 flow [2024-06-27 23:22:06,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2628, PETRI_PLACES=273, PETRI_TRANSITIONS=245} [2024-06-27 23:22:06,270 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 244 predicate places. [2024-06-27 23:22:06,270 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 245 transitions, 2628 flow [2024-06-27 23:22:06,270 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) [2024-06-27 23:22:06,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:06,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:06,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:22:06,270 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)] === [2024-06-27 23:22:06,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1486915008, now seen corresponding path program 7 times [2024-06-27 23:22:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:06,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152919062] [2024-06-27 23:22:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:06,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:07,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:07,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152919062] [2024-06-27 23:22:07,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152919062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:07,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:07,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:07,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877318423] [2024-06-27 23:22:07,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:07,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:07,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:07,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:07,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:07,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:07,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 245 transitions, 2628 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) [2024-06-27 23:22:07,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:07,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:07,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:08,248 INFO L124 PetriNetUnfolderBase]: 555/989 cut-off events. [2024-06-27 23:22:08,248 INFO L125 PetriNetUnfolderBase]: For 81814/81814 co-relation queries the response was YES. [2024-06-27 23:22:08,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7309 conditions, 989 events. 555/989 cut-off events. For 81814/81814 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4976 event pairs, 125 based on Foata normal form. 2/989 useless extension candidates. Maximal degree in co-relation 7179. Up to 908 conditions per place. [2024-06-27 23:22:08,257 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 220 selfloop transitions, 35 changer transitions 0/257 dead transitions. [2024-06-27 23:22:08,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 257 transitions, 3190 flow [2024-06-27 23:22:08,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:22:08,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:22:08,259 INFO L175 Difference]: Start difference. First operand has 273 places, 245 transitions, 2628 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:22:08,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 257 transitions, 3190 flow [2024-06-27 23:22:08,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 257 transitions, 3080 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:08,491 INFO L231 Difference]: Finished difference. Result has 276 places, 246 transitions, 2620 flow [2024-06-27 23:22:08,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2620, PETRI_PLACES=276, PETRI_TRANSITIONS=246} [2024-06-27 23:22:08,491 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 247 predicate places. [2024-06-27 23:22:08,492 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 246 transitions, 2620 flow [2024-06-27 23:22:08,492 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) [2024-06-27 23:22:08,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:08,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:08,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:22:08,492 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)] === [2024-06-27 23:22:08,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:08,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1486767138, now seen corresponding path program 8 times [2024-06-27 23:22:08,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:08,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842267603] [2024-06-27 23:22:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:08,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:09,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:09,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842267603] [2024-06-27 23:22:09,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842267603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:09,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:09,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:09,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444368254] [2024-06-27 23:22:09,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:09,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:09,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:09,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:10,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:10,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 246 transitions, 2620 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) [2024-06-27 23:22:10,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:10,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:10,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:10,539 INFO L124 PetriNetUnfolderBase]: 566/1010 cut-off events. [2024-06-27 23:22:10,539 INFO L125 PetriNetUnfolderBase]: For 90902/90902 co-relation queries the response was YES. [2024-06-27 23:22:10,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7603 conditions, 1010 events. 566/1010 cut-off events. For 90902/90902 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5123 event pairs, 123 based on Foata normal form. 2/1010 useless extension candidates. Maximal degree in co-relation 7472. Up to 886 conditions per place. [2024-06-27 23:22:10,547 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 213 selfloop transitions, 46 changer transitions 0/261 dead transitions. [2024-06-27 23:22:10,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 261 transitions, 3388 flow [2024-06-27 23:22:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:10,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:22:10,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 23:22:10,548 INFO L175 Difference]: Start difference. First operand has 276 places, 246 transitions, 2620 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:22:10,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 261 transitions, 3388 flow [2024-06-27 23:22:10,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 261 transitions, 3296 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:10,793 INFO L231 Difference]: Finished difference. Result has 277 places, 248 transitions, 2682 flow [2024-06-27 23:22:10,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2682, PETRI_PLACES=277, PETRI_TRANSITIONS=248} [2024-06-27 23:22:10,794 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 248 predicate places. [2024-06-27 23:22:10,794 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 248 transitions, 2682 flow [2024-06-27 23:22:10,794 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) [2024-06-27 23:22:10,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:10,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:10,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:22:10,795 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)] === [2024-06-27 23:22:10,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash 324811817, now seen corresponding path program 6 times [2024-06-27 23:22:10,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:10,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477371281] [2024-06-27 23:22:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:10,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:12,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:12,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477371281] [2024-06-27 23:22:12,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477371281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:12,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:12,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:12,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090663030] [2024-06-27 23:22:12,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:12,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:12,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:12,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:12,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:12,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:12,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 248 transitions, 2682 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) [2024-06-27 23:22:12,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:12,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:12,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:12,764 INFO L124 PetriNetUnfolderBase]: 577/1028 cut-off events. [2024-06-27 23:22:12,764 INFO L125 PetriNetUnfolderBase]: For 96727/96727 co-relation queries the response was YES. [2024-06-27 23:22:12,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7873 conditions, 1028 events. 577/1028 cut-off events. For 96727/96727 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5251 event pairs, 127 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 7741. Up to 913 conditions per place. [2024-06-27 23:22:12,774 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 213 selfloop transitions, 52 changer transitions 0/267 dead transitions. [2024-06-27 23:22:12,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 267 transitions, 3538 flow [2024-06-27 23:22:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 23:22:12,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 23:22:12,775 INFO L175 Difference]: Start difference. First operand has 277 places, 248 transitions, 2682 flow. Second operand 11 states and 131 transitions. [2024-06-27 23:22:12,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 267 transitions, 3538 flow [2024-06-27 23:22:13,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 267 transitions, 3443 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:22:13,054 INFO L231 Difference]: Finished difference. Result has 284 places, 255 transitions, 2851 flow [2024-06-27 23:22:13,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2851, PETRI_PLACES=284, PETRI_TRANSITIONS=255} [2024-06-27 23:22:13,054 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 255 predicate places. [2024-06-27 23:22:13,054 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 255 transitions, 2851 flow [2024-06-27 23:22:13,054 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) [2024-06-27 23:22:13,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:13,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:13,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:22:13,055 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)] === [2024-06-27 23:22:13,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash 324811662, now seen corresponding path program 9 times [2024-06-27 23:22:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725455691] [2024-06-27 23:22:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:14,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:14,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725455691] [2024-06-27 23:22:14,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725455691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:14,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:14,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:14,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928083884] [2024-06-27 23:22:14,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:14,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:14,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:14,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:14,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:14,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 255 transitions, 2851 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) [2024-06-27 23:22:14,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:14,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:14,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:14,956 INFO L124 PetriNetUnfolderBase]: 581/1036 cut-off events. [2024-06-27 23:22:14,956 INFO L125 PetriNetUnfolderBase]: For 101001/101001 co-relation queries the response was YES. [2024-06-27 23:22:14,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8064 conditions, 1036 events. 581/1036 cut-off events. For 101001/101001 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5314 event pairs, 126 based on Foata normal form. 2/1036 useless extension candidates. Maximal degree in co-relation 7928. Up to 946 conditions per place. [2024-06-27 23:22:14,967 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 225 selfloop transitions, 40 changer transitions 0/267 dead transitions. [2024-06-27 23:22:14,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 267 transitions, 3423 flow [2024-06-27 23:22:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:22:14,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:22:14,968 INFO L175 Difference]: Start difference. First operand has 284 places, 255 transitions, 2851 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:22:14,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 267 transitions, 3423 flow [2024-06-27 23:22:15,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 267 transitions, 3272 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-27 23:22:15,261 INFO L231 Difference]: Finished difference. Result has 289 places, 256 transitions, 2802 flow [2024-06-27 23:22:15,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2700, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2802, PETRI_PLACES=289, PETRI_TRANSITIONS=256} [2024-06-27 23:22:15,262 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2024-06-27 23:22:15,262 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 256 transitions, 2802 flow [2024-06-27 23:22:15,262 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) [2024-06-27 23:22:15,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:15,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:15,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:22:15,262 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)] === [2024-06-27 23:22:15,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:15,263 INFO L85 PathProgramCache]: Analyzing trace with hash 330533673, now seen corresponding path program 1 times [2024-06-27 23:22:15,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:15,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100979365] [2024-06-27 23:22:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:15,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:16,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:16,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100979365] [2024-06-27 23:22:16,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100979365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:16,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:16,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:16,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572375121] [2024-06-27 23:22:16,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:16,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:16,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:16,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 256 transitions, 2802 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) [2024-06-27 23:22:16,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:16,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:16,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:17,332 INFO L124 PetriNetUnfolderBase]: 585/1044 cut-off events. [2024-06-27 23:22:17,332 INFO L125 PetriNetUnfolderBase]: For 102581/102581 co-relation queries the response was YES. [2024-06-27 23:22:17,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8039 conditions, 1044 events. 585/1044 cut-off events. For 102581/102581 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5388 event pairs, 119 based on Foata normal form. 2/1044 useless extension candidates. Maximal degree in co-relation 7901. Up to 971 conditions per place. [2024-06-27 23:22:17,341 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 239 selfloop transitions, 28 changer transitions 0/269 dead transitions. [2024-06-27 23:22:17,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 269 transitions, 3396 flow [2024-06-27 23:22:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:17,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:22:17,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-27 23:22:17,343 INFO L175 Difference]: Start difference. First operand has 289 places, 256 transitions, 2802 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:22:17,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 269 transitions, 3396 flow [2024-06-27 23:22:17,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 269 transitions, 3306 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:17,683 INFO L231 Difference]: Finished difference. Result has 290 places, 257 transitions, 2790 flow [2024-06-27 23:22:17,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2790, PETRI_PLACES=290, PETRI_TRANSITIONS=257} [2024-06-27 23:22:17,683 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 261 predicate places. [2024-06-27 23:22:17,683 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 257 transitions, 2790 flow [2024-06-27 23:22:17,683 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) [2024-06-27 23:22:17,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:17,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:17,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:22:17,684 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)] === [2024-06-27 23:22:17,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:17,684 INFO L85 PathProgramCache]: Analyzing trace with hash 330318347, now seen corresponding path program 7 times [2024-06-27 23:22:17,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:17,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441464803] [2024-06-27 23:22:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:17,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:19,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:19,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441464803] [2024-06-27 23:22:19,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441464803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:19,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:19,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:19,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455288635] [2024-06-27 23:22:19,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:19,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:19,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:19,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:19,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:19,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:19,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 257 transitions, 2790 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) [2024-06-27 23:22:19,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:19,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:19,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:19,642 INFO L124 PetriNetUnfolderBase]: 586/1046 cut-off events. [2024-06-27 23:22:19,643 INFO L125 PetriNetUnfolderBase]: For 101162/101162 co-relation queries the response was YES. [2024-06-27 23:22:19,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7994 conditions, 1046 events. 586/1046 cut-off events. For 101162/101162 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5377 event pairs, 127 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 7855. Up to 947 conditions per place. [2024-06-27 23:22:19,653 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 222 selfloop transitions, 47 changer transitions 0/271 dead transitions. [2024-06-27 23:22:19,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 271 transitions, 3423 flow [2024-06-27 23:22:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 23:22:19,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-27 23:22:19,654 INFO L175 Difference]: Start difference. First operand has 290 places, 257 transitions, 2790 flow. Second operand 11 states and 127 transitions. [2024-06-27 23:22:19,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 271 transitions, 3423 flow [2024-06-27 23:22:19,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 271 transitions, 3341 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:19,960 INFO L231 Difference]: Finished difference. Result has 294 places, 260 transitions, 2887 flow [2024-06-27 23:22:19,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2887, PETRI_PLACES=294, PETRI_TRANSITIONS=260} [2024-06-27 23:22:19,960 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 265 predicate places. [2024-06-27 23:22:19,960 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 260 transitions, 2887 flow [2024-06-27 23:22:19,961 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) [2024-06-27 23:22:19,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:19,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:19,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:22:19,961 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)] === [2024-06-27 23:22:19,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:19,961 INFO L85 PathProgramCache]: Analyzing trace with hash 330318192, now seen corresponding path program 10 times [2024-06-27 23:22:19,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:19,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362392137] [2024-06-27 23:22:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:19,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:21,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:21,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362392137] [2024-06-27 23:22:21,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362392137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:21,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:21,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:21,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927922976] [2024-06-27 23:22:21,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:21,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:21,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:21,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:21,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:21,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:21,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 260 transitions, 2887 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) [2024-06-27 23:22:21,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:21,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:21,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:22,196 INFO L124 PetriNetUnfolderBase]: 583/1041 cut-off events. [2024-06-27 23:22:22,197 INFO L125 PetriNetUnfolderBase]: For 98104/98104 co-relation queries the response was YES. [2024-06-27 23:22:22,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7861 conditions, 1041 events. 583/1041 cut-off events. For 98104/98104 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5359 event pairs, 126 based on Foata normal form. 2/1041 useless extension candidates. Maximal degree in co-relation 7720. Up to 951 conditions per place. [2024-06-27 23:22:22,209 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 229 selfloop transitions, 40 changer transitions 0/271 dead transitions. [2024-06-27 23:22:22,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 271 transitions, 3451 flow [2024-06-27 23:22:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:22:22,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:22:22,210 INFO L175 Difference]: Start difference. First operand has 294 places, 260 transitions, 2887 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:22:22,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 271 transitions, 3451 flow [2024-06-27 23:22:22,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 271 transitions, 3287 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:22,533 INFO L231 Difference]: Finished difference. Result has 297 places, 260 transitions, 2807 flow [2024-06-27 23:22:22,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2807, PETRI_PLACES=297, PETRI_TRANSITIONS=260} [2024-06-27 23:22:22,533 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 268 predicate places. [2024-06-27 23:22:22,533 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 260 transitions, 2807 flow [2024-06-27 23:22:22,534 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) [2024-06-27 23:22:22,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:22,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:22,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:22:22,534 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)] === [2024-06-27 23:22:22,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1433164187, now seen corresponding path program 8 times [2024-06-27 23:22:22,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743986968] [2024-06-27 23:22:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:24,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:24,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743986968] [2024-06-27 23:22:24,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743986968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:24,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:24,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:24,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135739188] [2024-06-27 23:22:24,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:24,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:24,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:24,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:24,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 260 transitions, 2807 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) [2024-06-27 23:22:24,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:24,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:24,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:24,586 INFO L124 PetriNetUnfolderBase]: 589/1050 cut-off events. [2024-06-27 23:22:24,586 INFO L125 PetriNetUnfolderBase]: For 100156/100156 co-relation queries the response was YES. [2024-06-27 23:22:24,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7909 conditions, 1050 events. 589/1050 cut-off events. For 100156/100156 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5403 event pairs, 121 based on Foata normal form. 2/1050 useless extension candidates. Maximal degree in co-relation 7767. Up to 980 conditions per place. [2024-06-27 23:22:24,596 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 245 selfloop transitions, 28 changer transitions 0/275 dead transitions. [2024-06-27 23:22:24,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 275 transitions, 3477 flow [2024-06-27 23:22:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 23:22:24,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-27 23:22:24,612 INFO L175 Difference]: Start difference. First operand has 297 places, 260 transitions, 2807 flow. Second operand 11 states and 118 transitions. [2024-06-27 23:22:24,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 275 transitions, 3477 flow [2024-06-27 23:22:24,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 275 transitions, 3387 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:24,971 INFO L231 Difference]: Finished difference. Result has 298 places, 262 transitions, 2846 flow [2024-06-27 23:22:24,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2846, PETRI_PLACES=298, PETRI_TRANSITIONS=262} [2024-06-27 23:22:24,972 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 269 predicate places. [2024-06-27 23:22:24,972 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 262 transitions, 2846 flow [2024-06-27 23:22:24,972 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) [2024-06-27 23:22:24,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:24,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:24,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:22:24,972 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)] === [2024-06-27 23:22:24,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1768904485, now seen corresponding path program 9 times [2024-06-27 23:22:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:24,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346982097] [2024-06-27 23:22:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:24,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:26,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:26,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346982097] [2024-06-27 23:22:26,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346982097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:26,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:26,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:26,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252765544] [2024-06-27 23:22:26,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:26,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:26,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:26,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:26,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 262 transitions, 2846 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) [2024-06-27 23:22:26,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:26,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:26,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:26,984 INFO L124 PetriNetUnfolderBase]: 605/1076 cut-off events. [2024-06-27 23:22:26,984 INFO L125 PetriNetUnfolderBase]: For 111701/111701 co-relation queries the response was YES. [2024-06-27 23:22:26,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8415 conditions, 1076 events. 605/1076 cut-off events. For 111701/111701 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5534 event pairs, 125 based on Foata normal form. 2/1076 useless extension candidates. Maximal degree in co-relation 8272. Up to 1013 conditions per place. [2024-06-27 23:22:26,995 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 246 selfloop transitions, 30 changer transitions 0/278 dead transitions. [2024-06-27 23:22:26,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 278 transitions, 3758 flow [2024-06-27 23:22:26,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:22:26,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:22:26,997 INFO L175 Difference]: Start difference. First operand has 298 places, 262 transitions, 2846 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:22:26,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 278 transitions, 3758 flow [2024-06-27 23:22:27,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 278 transitions, 3638 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:27,350 INFO L231 Difference]: Finished difference. Result has 300 places, 266 transitions, 2931 flow [2024-06-27 23:22:27,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2931, PETRI_PLACES=300, PETRI_TRANSITIONS=266} [2024-06-27 23:22:27,351 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 271 predicate places. [2024-06-27 23:22:27,351 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 266 transitions, 2931 flow [2024-06-27 23:22:27,351 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) [2024-06-27 23:22:27,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:27,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:27,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:22:27,352 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)] === [2024-06-27 23:22:27,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:27,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1962838315, now seen corresponding path program 10 times [2024-06-27 23:22:27,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:27,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092302876] [2024-06-27 23:22:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:27,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:28,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:28,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092302876] [2024-06-27 23:22:28,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092302876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:28,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:28,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:28,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405509277] [2024-06-27 23:22:28,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:28,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:28,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:28,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:29,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:29,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 266 transitions, 2931 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) [2024-06-27 23:22:29,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:29,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:29,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:29,548 INFO L124 PetriNetUnfolderBase]: 617/1096 cut-off events. [2024-06-27 23:22:29,548 INFO L125 PetriNetUnfolderBase]: For 114624/114624 co-relation queries the response was YES. [2024-06-27 23:22:29,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8566 conditions, 1096 events. 617/1096 cut-off events. For 114624/114624 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5677 event pairs, 121 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 8422. Up to 985 conditions per place. [2024-06-27 23:22:29,561 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 245 selfloop transitions, 37 changer transitions 0/284 dead transitions. [2024-06-27 23:22:29,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 284 transitions, 3653 flow [2024-06-27 23:22:29,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:22:29,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 23:22:29,562 INFO L175 Difference]: Start difference. First operand has 300 places, 266 transitions, 2931 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:22:29,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 284 transitions, 3653 flow [2024-06-27 23:22:29,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 284 transitions, 3530 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 23:22:29,950 INFO L231 Difference]: Finished difference. Result has 305 places, 270 transitions, 2979 flow [2024-06-27 23:22:29,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2979, PETRI_PLACES=305, PETRI_TRANSITIONS=270} [2024-06-27 23:22:29,950 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 276 predicate places. [2024-06-27 23:22:29,950 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 270 transitions, 2979 flow [2024-06-27 23:22:29,951 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) [2024-06-27 23:22:29,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:29,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:29,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:22:29,951 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)] === [2024-06-27 23:22:29,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:29,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1259376117, now seen corresponding path program 11 times [2024-06-27 23:22:29,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:29,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232280612] [2024-06-27 23:22:29,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:29,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:31,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:31,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232280612] [2024-06-27 23:22:31,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232280612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:31,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:31,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:31,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566838786] [2024-06-27 23:22:31,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:31,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:31,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:31,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:31,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:31,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 270 transitions, 2979 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) [2024-06-27 23:22:31,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:31,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:31,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:32,076 INFO L124 PetriNetUnfolderBase]: 623/1106 cut-off events. [2024-06-27 23:22:32,077 INFO L125 PetriNetUnfolderBase]: For 116647/116647 co-relation queries the response was YES. [2024-06-27 23:22:32,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8686 conditions, 1106 events. 623/1106 cut-off events. For 116647/116647 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5739 event pairs, 128 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 8540. Up to 1048 conditions per place. [2024-06-27 23:22:32,090 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 251 selfloop transitions, 29 changer transitions 0/282 dead transitions. [2024-06-27 23:22:32,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 282 transitions, 3645 flow [2024-06-27 23:22:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 23:22:32,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-27 23:22:32,092 INFO L175 Difference]: Start difference. First operand has 305 places, 270 transitions, 2979 flow. Second operand 11 states and 118 transitions. [2024-06-27 23:22:32,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 282 transitions, 3645 flow [2024-06-27 23:22:32,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 282 transitions, 3508 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:32,455 INFO L231 Difference]: Finished difference. Result has 308 places, 272 transitions, 2985 flow [2024-06-27 23:22:32,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2985, PETRI_PLACES=308, PETRI_TRANSITIONS=272} [2024-06-27 23:22:32,456 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 279 predicate places. [2024-06-27 23:22:32,456 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 272 transitions, 2985 flow [2024-06-27 23:22:32,456 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) [2024-06-27 23:22:32,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:32,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:32,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:22:32,457 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)] === [2024-06-27 23:22:32,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1972403117, now seen corresponding path program 2 times [2024-06-27 23:22:32,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:32,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191583998] [2024-06-27 23:22:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:32,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:33,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191583998] [2024-06-27 23:22:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191583998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:33,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:33,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:33,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772595614] [2024-06-27 23:22:33,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:33,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:33,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:33,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:33,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:33,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:33,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 272 transitions, 2985 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) [2024-06-27 23:22:33,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:33,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:33,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:34,253 INFO L124 PetriNetUnfolderBase]: 627/1114 cut-off events. [2024-06-27 23:22:34,253 INFO L125 PetriNetUnfolderBase]: For 118765/118765 co-relation queries the response was YES. [2024-06-27 23:22:34,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8664 conditions, 1114 events. 627/1114 cut-off events. For 118765/118765 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5807 event pairs, 130 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 8517. Up to 1075 conditions per place. [2024-06-27 23:22:34,263 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 266 selfloop transitions, 15 changer transitions 0/283 dead transitions. [2024-06-27 23:22:34,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 283 transitions, 3587 flow [2024-06-27 23:22:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 23:22:34,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 23:22:34,265 INFO L175 Difference]: Start difference. First operand has 308 places, 272 transitions, 2985 flow. Second operand 10 states and 102 transitions. [2024-06-27 23:22:34,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 283 transitions, 3587 flow [2024-06-27 23:22:34,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 283 transitions, 3462 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:34,642 INFO L231 Difference]: Finished difference. Result has 309 places, 273 transitions, 2914 flow [2024-06-27 23:22:34,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2914, PETRI_PLACES=309, PETRI_TRANSITIONS=273} [2024-06-27 23:22:34,642 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 280 predicate places. [2024-06-27 23:22:34,642 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 273 transitions, 2914 flow [2024-06-27 23:22:34,642 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) [2024-06-27 23:22:34,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:34,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:34,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:22:34,643 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)] === [2024-06-27 23:22:34,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:34,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1158193622, now seen corresponding path program 11 times [2024-06-27 23:22:34,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:34,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191071335] [2024-06-27 23:22:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:34,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:36,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:36,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191071335] [2024-06-27 23:22:36,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191071335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:36,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:36,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:36,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708573207] [2024-06-27 23:22:36,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:36,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:36,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:36,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:36,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:36,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:36,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 273 transitions, 2914 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) [2024-06-27 23:22:36,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:36,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:36,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:36,754 INFO L124 PetriNetUnfolderBase]: 648/1160 cut-off events. [2024-06-27 23:22:36,754 INFO L125 PetriNetUnfolderBase]: For 167542/167542 co-relation queries the response was YES. [2024-06-27 23:22:36,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8824 conditions, 1160 events. 648/1160 cut-off events. For 167542/167542 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6113 event pairs, 135 based on Foata normal form. 14/1172 useless extension candidates. Maximal degree in co-relation 8676. Up to 1069 conditions per place. [2024-06-27 23:22:36,766 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 260 selfloop transitions, 21 changer transitions 8/291 dead transitions. [2024-06-27 23:22:36,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 291 transitions, 3696 flow [2024-06-27 23:22:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:22:36,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:22:36,767 INFO L175 Difference]: Start difference. First operand has 309 places, 273 transitions, 2914 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:22:36,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 291 transitions, 3696 flow [2024-06-27 23:22:37,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 291 transitions, 3652 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:37,193 INFO L231 Difference]: Finished difference. Result has 313 places, 273 transitions, 2941 flow [2024-06-27 23:22:37,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2870, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2941, PETRI_PLACES=313, PETRI_TRANSITIONS=273} [2024-06-27 23:22:37,194 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 284 predicate places. [2024-06-27 23:22:37,194 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 273 transitions, 2941 flow [2024-06-27 23:22:37,194 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) [2024-06-27 23:22:37,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:37,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:37,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:22:37,194 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)] === [2024-06-27 23:22:37,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:37,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1158409103, now seen corresponding path program 3 times [2024-06-27 23:22:37,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:37,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287136774] [2024-06-27 23:22:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:37,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:38,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:38,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287136774] [2024-06-27 23:22:38,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287136774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:38,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:38,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:38,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407140716] [2024-06-27 23:22:38,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:38,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:38,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:38,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:38,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:38,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 273 transitions, 2941 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) [2024-06-27 23:22:38,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:38,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:38,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:39,309 INFO L124 PetriNetUnfolderBase]: 628/1120 cut-off events. [2024-06-27 23:22:39,310 INFO L125 PetriNetUnfolderBase]: For 121136/121136 co-relation queries the response was YES. [2024-06-27 23:22:39,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8566 conditions, 1120 events. 628/1120 cut-off events. For 121136/121136 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5883 event pairs, 129 based on Foata normal form. 2/1120 useless extension candidates. Maximal degree in co-relation 8416. Up to 1077 conditions per place. [2024-06-27 23:22:39,323 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 263 selfloop transitions, 19 changer transitions 0/284 dead transitions. [2024-06-27 23:22:39,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 284 transitions, 3555 flow [2024-06-27 23:22:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 23:22:39,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-27 23:22:39,324 INFO L175 Difference]: Start difference. First operand has 313 places, 273 transitions, 2941 flow. Second operand 10 states and 106 transitions. [2024-06-27 23:22:39,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 284 transitions, 3555 flow [2024-06-27 23:22:39,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 284 transitions, 3480 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:39,774 INFO L231 Difference]: Finished difference. Result has 313 places, 274 transitions, 2930 flow [2024-06-27 23:22:39,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2866, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2930, PETRI_PLACES=313, PETRI_TRANSITIONS=274} [2024-06-27 23:22:39,775 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 284 predicate places. [2024-06-27 23:22:39,775 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 274 transitions, 2930 flow [2024-06-27 23:22:39,775 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) [2024-06-27 23:22:39,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:39,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:39,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:22:39,776 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)] === [2024-06-27 23:22:39,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash 964254212, now seen corresponding path program 12 times [2024-06-27 23:22:39,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:39,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268502771] [2024-06-27 23:22:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:39,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:41,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:41,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268502771] [2024-06-27 23:22:41,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268502771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:41,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:41,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:41,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899041745] [2024-06-27 23:22:41,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:41,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:41,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:41,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:41,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:41,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 274 transitions, 2930 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) [2024-06-27 23:22:41,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:41,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:41,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:41,888 INFO L124 PetriNetUnfolderBase]: 632/1128 cut-off events. [2024-06-27 23:22:41,888 INFO L125 PetriNetUnfolderBase]: For 121249/121249 co-relation queries the response was YES. [2024-06-27 23:22:41,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8589 conditions, 1128 events. 632/1128 cut-off events. For 121249/121249 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5944 event pairs, 131 based on Foata normal form. 2/1128 useless extension candidates. Maximal degree in co-relation 8439. Up to 1079 conditions per place. [2024-06-27 23:22:41,904 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 259 selfloop transitions, 24 changer transitions 0/285 dead transitions. [2024-06-27 23:22:41,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 285 transitions, 3550 flow [2024-06-27 23:22:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 23:22:41,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 23:22:41,906 INFO L175 Difference]: Start difference. First operand has 313 places, 274 transitions, 2930 flow. Second operand 11 states and 115 transitions. [2024-06-27 23:22:41,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 285 transitions, 3550 flow [2024-06-27 23:22:42,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 285 transitions, 3496 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:42,390 INFO L231 Difference]: Finished difference. Result has 316 places, 275 transitions, 2962 flow [2024-06-27 23:22:42,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2876, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2962, PETRI_PLACES=316, PETRI_TRANSITIONS=275} [2024-06-27 23:22:42,391 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 287 predicate places. [2024-06-27 23:22:42,391 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 275 transitions, 2962 flow [2024-06-27 23:22:42,391 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) [2024-06-27 23:22:42,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:42,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:42,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:22:42,392 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)] === [2024-06-27 23:22:42,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash -713427885, now seen corresponding path program 4 times [2024-06-27 23:22:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:42,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750829997] [2024-06-27 23:22:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:43,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750829997] [2024-06-27 23:22:43,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750829997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:43,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:43,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:43,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621581817] [2024-06-27 23:22:43,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:43,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:43,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:43,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:43,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:44,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:44,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 275 transitions, 2962 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) [2024-06-27 23:22:44,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:44,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:44,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:44,535 INFO L124 PetriNetUnfolderBase]: 636/1136 cut-off events. [2024-06-27 23:22:44,535 INFO L125 PetriNetUnfolderBase]: For 123754/123754 co-relation queries the response was YES. [2024-06-27 23:22:44,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8653 conditions, 1136 events. 636/1136 cut-off events. For 123754/123754 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5993 event pairs, 125 based on Foata normal form. 2/1136 useless extension candidates. Maximal degree in co-relation 8502. Up to 1081 conditions per place. [2024-06-27 23:22:44,546 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 262 selfloop transitions, 23 changer transitions 0/287 dead transitions. [2024-06-27 23:22:44,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 287 transitions, 3594 flow [2024-06-27 23:22:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 23:22:44,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-27 23:22:44,548 INFO L175 Difference]: Start difference. First operand has 316 places, 275 transitions, 2962 flow. Second operand 10 states and 108 transitions. [2024-06-27 23:22:44,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 287 transitions, 3594 flow [2024-06-27 23:22:44,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 287 transitions, 3518 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:44,958 INFO L231 Difference]: Finished difference. Result has 317 places, 276 transitions, 2960 flow [2024-06-27 23:22:44,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2960, PETRI_PLACES=317, PETRI_TRANSITIONS=276} [2024-06-27 23:22:44,958 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 288 predicate places. [2024-06-27 23:22:44,958 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 276 transitions, 2960 flow [2024-06-27 23:22:44,958 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) [2024-06-27 23:22:44,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:44,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:44,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:22:44,959 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)] === [2024-06-27 23:22:44,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash -719149741, now seen corresponding path program 12 times [2024-06-27 23:22:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:44,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260876159] [2024-06-27 23:22:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:46,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:46,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260876159] [2024-06-27 23:22:46,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260876159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:46,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:46,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:46,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271626560] [2024-06-27 23:22:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:46,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:46,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:46,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:46,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:46,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 276 transitions, 2960 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) [2024-06-27 23:22:46,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:46,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:46,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:47,016 INFO L124 PetriNetUnfolderBase]: 652/1162 cut-off events. [2024-06-27 23:22:47,016 INFO L125 PetriNetUnfolderBase]: For 137316/137316 co-relation queries the response was YES. [2024-06-27 23:22:47,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9181 conditions, 1162 events. 652/1162 cut-off events. For 137316/137316 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6144 event pairs, 132 based on Foata normal form. 2/1162 useless extension candidates. Maximal degree in co-relation 9029. Up to 1058 conditions per place. [2024-06-27 23:22:47,029 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 243 selfloop transitions, 47 changer transitions 0/292 dead transitions. [2024-06-27 23:22:47,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 292 transitions, 3940 flow [2024-06-27 23:22:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:22:47,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 23:22:47,030 INFO L175 Difference]: Start difference. First operand has 317 places, 276 transitions, 2960 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:22:47,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 292 transitions, 3940 flow [2024-06-27 23:22:47,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 292 transitions, 3876 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:47,415 INFO L231 Difference]: Finished difference. Result has 319 places, 280 transitions, 3159 flow [2024-06-27 23:22:47,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2896, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3159, PETRI_PLACES=319, PETRI_TRANSITIONS=280} [2024-06-27 23:22:47,415 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 290 predicate places. [2024-06-27 23:22:47,415 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 280 transitions, 3159 flow [2024-06-27 23:22:47,415 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) [2024-06-27 23:22:47,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:47,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:47,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:22:47,416 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)] === [2024-06-27 23:22:47,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:47,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1768697095, now seen corresponding path program 13 times [2024-06-27 23:22:47,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:47,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621962548] [2024-06-27 23:22:47,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:47,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:48,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621962548] [2024-06-27 23:22:48,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621962548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:48,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:48,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:48,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134355700] [2024-06-27 23:22:48,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:48,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:48,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:49,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:49,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 280 transitions, 3159 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) [2024-06-27 23:22:49,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:49,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:49,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:49,617 INFO L124 PetriNetUnfolderBase]: 658/1172 cut-off events. [2024-06-27 23:22:49,617 INFO L125 PetriNetUnfolderBase]: For 141245/141245 co-relation queries the response was YES. [2024-06-27 23:22:49,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9397 conditions, 1172 events. 658/1172 cut-off events. For 141245/141245 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6218 event pairs, 127 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 9244. Up to 1102 conditions per place. [2024-06-27 23:22:49,632 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 267 selfloop transitions, 25 changer transitions 0/294 dead transitions. [2024-06-27 23:22:49,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 294 transitions, 3877 flow [2024-06-27 23:22:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 23:22:49,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-27 23:22:49,633 INFO L175 Difference]: Start difference. First operand has 319 places, 280 transitions, 3159 flow. Second operand 11 states and 119 transitions. [2024-06-27 23:22:49,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 294 transitions, 3877 flow [2024-06-27 23:22:50,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 294 transitions, 3728 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-27 23:22:50,151 INFO L231 Difference]: Finished difference. Result has 324 places, 282 transitions, 3153 flow [2024-06-27 23:22:50,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3153, PETRI_PLACES=324, PETRI_TRANSITIONS=282} [2024-06-27 23:22:50,152 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 295 predicate places. [2024-06-27 23:22:50,152 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 282 transitions, 3153 flow [2024-06-27 23:22:50,152 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) [2024-06-27 23:22:50,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:50,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:50,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:22:50,152 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)] === [2024-06-27 23:22:50,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:50,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1981926317, now seen corresponding path program 5 times [2024-06-27 23:22:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:50,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389735794] [2024-06-27 23:22:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:50,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:51,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:51,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389735794] [2024-06-27 23:22:51,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389735794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:51,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:51,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:51,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307316796] [2024-06-27 23:22:51,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:51,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:51,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:51,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:51,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:51,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:51,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 282 transitions, 3153 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) [2024-06-27 23:22:51,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:51,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:51,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:52,334 INFO L124 PetriNetUnfolderBase]: 662/1180 cut-off events. [2024-06-27 23:22:52,335 INFO L125 PetriNetUnfolderBase]: For 142321/142321 co-relation queries the response was YES. [2024-06-27 23:22:52,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9362 conditions, 1180 events. 662/1180 cut-off events. For 142321/142321 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6264 event pairs, 138 based on Foata normal form. 2/1180 useless extension candidates. Maximal degree in co-relation 9207. Up to 1138 conditions per place. [2024-06-27 23:22:52,349 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 271 selfloop transitions, 19 changer transitions 0/292 dead transitions. [2024-06-27 23:22:52,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 292 transitions, 3777 flow [2024-06-27 23:22:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 23:22:52,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-27 23:22:52,350 INFO L175 Difference]: Start difference. First operand has 324 places, 282 transitions, 3153 flow. Second operand 10 states and 104 transitions. [2024-06-27 23:22:52,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 292 transitions, 3777 flow [2024-06-27 23:22:52,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 292 transitions, 3656 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:52,893 INFO L231 Difference]: Finished difference. Result has 325 places, 283 transitions, 3101 flow [2024-06-27 23:22:52,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3032, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3101, PETRI_PLACES=325, PETRI_TRANSITIONS=283} [2024-06-27 23:22:52,894 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 296 predicate places. [2024-06-27 23:22:52,894 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 283 transitions, 3101 flow [2024-06-27 23:22:52,894 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) [2024-06-27 23:22:52,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:52,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:52,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:22:52,894 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)] === [2024-06-27 23:22:52,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:52,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1259168727, now seen corresponding path program 14 times [2024-06-27 23:22:52,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:52,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968841093] [2024-06-27 23:22:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:52,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968841093] [2024-06-27 23:22:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968841093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:54,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:54,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:54,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600057930] [2024-06-27 23:22:54,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:54,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:54,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:54,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 283 transitions, 3101 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) [2024-06-27 23:22:54,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:54,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:54,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:55,151 INFO L124 PetriNetUnfolderBase]: 668/1190 cut-off events. [2024-06-27 23:22:55,152 INFO L125 PetriNetUnfolderBase]: For 145078/145078 co-relation queries the response was YES. [2024-06-27 23:22:55,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9422 conditions, 1190 events. 668/1190 cut-off events. For 145078/145078 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6358 event pairs, 128 based on Foata normal form. 2/1190 useless extension candidates. Maximal degree in co-relation 9266. Up to 1079 conditions per place. [2024-06-27 23:22:55,166 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 259 selfloop transitions, 37 changer transitions 0/298 dead transitions. [2024-06-27 23:22:55,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 298 transitions, 3837 flow [2024-06-27 23:22:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:22:55,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 23:22:55,167 INFO L175 Difference]: Start difference. First operand has 325 places, 283 transitions, 3101 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:22:55,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 298 transitions, 3837 flow [2024-06-27 23:22:55,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 298 transitions, 3780 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:55,702 INFO L231 Difference]: Finished difference. Result has 328 places, 285 transitions, 3211 flow [2024-06-27 23:22:55,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3044, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3211, PETRI_PLACES=328, PETRI_TRANSITIONS=285} [2024-06-27 23:22:55,702 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 299 predicate places. [2024-06-27 23:22:55,702 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 285 transitions, 3211 flow [2024-06-27 23:22:55,702 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) [2024-06-27 23:22:55,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:55,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:55,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:22:55,703 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)] === [2024-06-27 23:22:55,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:55,703 INFO L85 PathProgramCache]: Analyzing trace with hash -719153616, now seen corresponding path program 13 times [2024-06-27 23:22:55,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:55,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683651188] [2024-06-27 23:22:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:55,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:57,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683651188] [2024-06-27 23:22:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683651188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:57,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:57,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314567571] [2024-06-27 23:22:57,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:57,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:57,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:57,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 285 transitions, 3211 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) [2024-06-27 23:22:57,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:57,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:57,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:57,793 INFO L124 PetriNetUnfolderBase]: 679/1211 cut-off events. [2024-06-27 23:22:57,794 INFO L125 PetriNetUnfolderBase]: For 159186/159186 co-relation queries the response was YES. [2024-06-27 23:22:57,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9891 conditions, 1211 events. 679/1211 cut-off events. For 159186/159186 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6479 event pairs, 140 based on Foata normal form. 2/1211 useless extension candidates. Maximal degree in co-relation 9734. Up to 1110 conditions per place. [2024-06-27 23:22:57,804 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 258 selfloop transitions, 39 changer transitions 0/299 dead transitions. [2024-06-27 23:22:57,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 299 transitions, 4105 flow [2024-06-27 23:22:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:57,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:22:57,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-27 23:22:57,806 INFO L175 Difference]: Start difference. First operand has 328 places, 285 transitions, 3211 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:22:57,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 299 transitions, 4105 flow [2024-06-27 23:22:58,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 299 transitions, 3951 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:58,364 INFO L231 Difference]: Finished difference. Result has 329 places, 287 transitions, 3209 flow [2024-06-27 23:22:58,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3209, PETRI_PLACES=329, PETRI_TRANSITIONS=287} [2024-06-27 23:22:58,364 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 300 predicate places. [2024-06-27 23:22:58,364 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 287 transitions, 3209 flow [2024-06-27 23:22:58,364 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) [2024-06-27 23:22:58,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:58,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:58,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:22:58,365 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)] === [2024-06-27 23:22:58,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:58,365 INFO L85 PathProgramCache]: Analyzing trace with hash -719149896, now seen corresponding path program 14 times [2024-06-27 23:22:58,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:58,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095752972] [2024-06-27 23:22:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:58,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:59,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:59,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:59,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095752972] [2024-06-27 23:22:59,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095752972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:59,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:59,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:59,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20345924] [2024-06-27 23:22:59,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:59,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:59,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:59,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:59,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:59,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:22:59,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 287 transitions, 3209 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) [2024-06-27 23:22:59,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:59,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:22:59,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:00,270 INFO L124 PetriNetUnfolderBase]: 683/1219 cut-off events. [2024-06-27 23:23:00,271 INFO L125 PetriNetUnfolderBase]: For 161886/161886 co-relation queries the response was YES. [2024-06-27 23:23:00,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9899 conditions, 1219 events. 683/1219 cut-off events. For 161886/161886 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6548 event pairs, 142 based on Foata normal form. 2/1219 useless extension candidates. Maximal degree in co-relation 9741. Up to 1158 conditions per place. [2024-06-27 23:23:00,286 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 264 selfloop transitions, 32 changer transitions 0/298 dead transitions. [2024-06-27 23:23:00,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 298 transitions, 3859 flow [2024-06-27 23:23:00,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 23:23:00,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 23:23:00,288 INFO L175 Difference]: Start difference. First operand has 329 places, 287 transitions, 3209 flow. Second operand 11 states and 115 transitions. [2024-06-27 23:23:00,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 298 transitions, 3859 flow [2024-06-27 23:23:00,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 298 transitions, 3721 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 23:23:00,998 INFO L231 Difference]: Finished difference. Result has 333 places, 288 transitions, 3177 flow [2024-06-27 23:23:00,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3177, PETRI_PLACES=333, PETRI_TRANSITIONS=288} [2024-06-27 23:23:01,012 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 304 predicate places. [2024-06-27 23:23:01,012 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 288 transitions, 3177 flow [2024-06-27 23:23:01,012 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) [2024-06-27 23:23:01,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:01,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:01,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:23:01,013 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)] === [2024-06-27 23:23:01,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:01,013 INFO L85 PathProgramCache]: Analyzing trace with hash 958891832, now seen corresponding path program 15 times [2024-06-27 23:23:01,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:01,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585261298] [2024-06-27 23:23:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:01,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:02,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585261298] [2024-06-27 23:23:02,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585261298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:02,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:02,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661964801] [2024-06-27 23:23:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:02,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:02,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:02,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:02,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:23:02,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 288 transitions, 3177 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) [2024-06-27 23:23:02,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:02,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:23:02,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:03,094 INFO L124 PetriNetUnfolderBase]: 680/1214 cut-off events. [2024-06-27 23:23:03,094 INFO L125 PetriNetUnfolderBase]: For 152431/152431 co-relation queries the response was YES. [2024-06-27 23:23:03,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9535 conditions, 1214 events. 680/1214 cut-off events. For 152431/152431 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6519 event pairs, 141 based on Foata normal form. 2/1214 useless extension candidates. Maximal degree in co-relation 9376. Up to 1165 conditions per place. [2024-06-27 23:23:03,110 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 271 selfloop transitions, 25 changer transitions 0/298 dead transitions. [2024-06-27 23:23:03,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 298 transitions, 3791 flow [2024-06-27 23:23:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 23:23:03,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-27 23:23:03,111 INFO L175 Difference]: Start difference. First operand has 333 places, 288 transitions, 3177 flow. Second operand 11 states and 114 transitions. [2024-06-27 23:23:03,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 298 transitions, 3791 flow [2024-06-27 23:23:03,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 298 transitions, 3701 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:03,732 INFO L231 Difference]: Finished difference. Result has 335 places, 288 transitions, 3141 flow [2024-06-27 23:23:03,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3141, PETRI_PLACES=335, PETRI_TRANSITIONS=288} [2024-06-27 23:23:03,733 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 306 predicate places. [2024-06-27 23:23:03,733 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 288 transitions, 3141 flow [2024-06-27 23:23:03,733 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) [2024-06-27 23:23:03,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:03,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:03,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:23:03,733 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)] === [2024-06-27 23:23:03,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:03,734 INFO L85 PathProgramCache]: Analyzing trace with hash -719000011, now seen corresponding path program 15 times [2024-06-27 23:23:03,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:03,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894120015] [2024-06-27 23:23:03,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:03,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:05,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:05,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894120015] [2024-06-27 23:23:05,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894120015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:05,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:05,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664985290] [2024-06-27 23:23:05,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:05,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:05,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:05,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:23:05,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 288 transitions, 3141 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) [2024-06-27 23:23:05,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:05,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:23:05,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:05,956 INFO L124 PetriNetUnfolderBase]: 686/1224 cut-off events. [2024-06-27 23:23:05,957 INFO L125 PetriNetUnfolderBase]: For 155852/155852 co-relation queries the response was YES. [2024-06-27 23:23:05,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9649 conditions, 1224 events. 686/1224 cut-off events. For 155852/155852 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6585 event pairs, 130 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 9489. Up to 1113 conditions per place. [2024-06-27 23:23:05,971 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 261 selfloop transitions, 40 changer transitions 0/303 dead transitions. [2024-06-27 23:23:05,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 303 transitions, 3891 flow [2024-06-27 23:23:05,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:23:05,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:23:05,972 INFO L175 Difference]: Start difference. First operand has 335 places, 288 transitions, 3141 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:23:05,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 303 transitions, 3891 flow [2024-06-27 23:23:06,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 303 transitions, 3827 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:06,645 INFO L231 Difference]: Finished difference. Result has 336 places, 290 transitions, 3254 flow [2024-06-27 23:23:06,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3254, PETRI_PLACES=336, PETRI_TRANSITIONS=290} [2024-06-27 23:23:06,645 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 307 predicate places. [2024-06-27 23:23:06,645 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 290 transitions, 3254 flow [2024-06-27 23:23:06,646 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) [2024-06-27 23:23:06,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:06,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:06,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:23:06,646 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)] === [2024-06-27 23:23:06,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash -719005591, now seen corresponding path program 16 times [2024-06-27 23:23:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:06,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542158957] [2024-06-27 23:23:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:06,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:08,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:08,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542158957] [2024-06-27 23:23:08,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542158957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:08,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:08,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:08,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665379721] [2024-06-27 23:23:08,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:08,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:08,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:08,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:23:08,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 290 transitions, 3254 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) [2024-06-27 23:23:08,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:08,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:23:08,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:09,175 INFO L124 PetriNetUnfolderBase]: 682/1218 cut-off events. [2024-06-27 23:23:09,176 INFO L125 PetriNetUnfolderBase]: For 147463/147463 co-relation queries the response was YES. [2024-06-27 23:23:09,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9452 conditions, 1218 events. 682/1218 cut-off events. For 147463/147463 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6528 event pairs, 143 based on Foata normal form. 2/1218 useless extension candidates. Maximal degree in co-relation 9291. Up to 1160 conditions per place. [2024-06-27 23:23:09,190 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 268 selfloop transitions, 30 changer transitions 0/300 dead transitions. [2024-06-27 23:23:09,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 300 transitions, 3880 flow [2024-06-27 23:23:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 23:23:09,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-27 23:23:09,191 INFO L175 Difference]: Start difference. First operand has 336 places, 290 transitions, 3254 flow. Second operand 11 states and 118 transitions. [2024-06-27 23:23:09,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 300 transitions, 3880 flow [2024-06-27 23:23:09,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 300 transitions, 3721 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:09,873 INFO L231 Difference]: Finished difference. Result has 338 places, 290 transitions, 3160 flow [2024-06-27 23:23:09,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3095, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3160, PETRI_PLACES=338, PETRI_TRANSITIONS=290} [2024-06-27 23:23:09,874 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 309 predicate places. [2024-06-27 23:23:09,874 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 290 transitions, 3160 flow [2024-06-27 23:23:09,874 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) [2024-06-27 23:23:09,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:09,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:09,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:23:09,874 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)] === [2024-06-27 23:23:09,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1460309936, now seen corresponding path program 16 times [2024-06-27 23:23:09,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:09,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149891189] [2024-06-27 23:23:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:09,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:11,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:11,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149891189] [2024-06-27 23:23:11,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149891189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:11,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:11,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:23:11,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362179971] [2024-06-27 23:23:11,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:11,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:23:11,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:23:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:23:11,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:11,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 290 transitions, 3160 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-27 23:23:11,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:11,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:11,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:11,762 INFO L124 PetriNetUnfolderBase]: 652/1200 cut-off events. [2024-06-27 23:23:11,762 INFO L125 PetriNetUnfolderBase]: For 165664/165667 co-relation queries the response was YES. [2024-06-27 23:23:11,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9319 conditions, 1200 events. 652/1200 cut-off events. For 165664/165667 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6669 event pairs, 55 based on Foata normal form. 5/1202 useless extension candidates. Maximal degree in co-relation 9157. Up to 675 conditions per place. [2024-06-27 23:23:11,778 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 153 selfloop transitions, 51 changer transitions 0/310 dead transitions. [2024-06-27 23:23:11,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 310 transitions, 3894 flow [2024-06-27 23:23:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:23:11,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 23:23:11,779 INFO L175 Difference]: Start difference. First operand has 338 places, 290 transitions, 3160 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:23:11,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 310 transitions, 3894 flow [2024-06-27 23:23:12,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 310 transitions, 3751 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-27 23:23:12,503 INFO L231 Difference]: Finished difference. Result has 337 places, 292 transitions, 3199 flow [2024-06-27 23:23:12,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3199, PETRI_PLACES=337, PETRI_TRANSITIONS=292} [2024-06-27 23:23:12,503 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 308 predicate places. [2024-06-27 23:23:12,503 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 292 transitions, 3199 flow [2024-06-27 23:23:12,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-27 23:23:12,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:12,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:12,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:23:12,504 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)] === [2024-06-27 23:23:12,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:12,504 INFO L85 PathProgramCache]: Analyzing trace with hash 754223665, now seen corresponding path program 17 times [2024-06-27 23:23:12,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:12,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784697190] [2024-06-27 23:23:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:12,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:14,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:14,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784697190] [2024-06-27 23:23:14,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784697190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:14,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:14,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:14,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127084444] [2024-06-27 23:23:14,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:14,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:14,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:14,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:23:14,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 292 transitions, 3199 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) [2024-06-27 23:23:14,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:14,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:23:14,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:14,864 INFO L124 PetriNetUnfolderBase]: 712/1270 cut-off events. [2024-06-27 23:23:14,864 INFO L125 PetriNetUnfolderBase]: For 177701/177701 co-relation queries the response was YES. [2024-06-27 23:23:14,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10268 conditions, 1270 events. 712/1270 cut-off events. For 177701/177701 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6857 event pairs, 82 based on Foata normal form. 2/1270 useless extension candidates. Maximal degree in co-relation 10106. Up to 1094 conditions per place. [2024-06-27 23:23:14,879 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 248 selfloop transitions, 72 changer transitions 0/322 dead transitions. [2024-06-27 23:23:14,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 322 transitions, 4313 flow [2024-06-27 23:23:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:23:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:23:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 23:23:14,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-27 23:23:14,880 INFO L175 Difference]: Start difference. First operand has 337 places, 292 transitions, 3199 flow. Second operand 12 states and 141 transitions. [2024-06-27 23:23:14,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 322 transitions, 4313 flow [2024-06-27 23:23:15,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 322 transitions, 4227 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:23:15,581 INFO L231 Difference]: Finished difference. Result has 343 places, 301 transitions, 3518 flow [2024-06-27 23:23:15,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3518, PETRI_PLACES=343, PETRI_TRANSITIONS=301} [2024-06-27 23:23:15,581 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 314 predicate places. [2024-06-27 23:23:15,581 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 301 transitions, 3518 flow [2024-06-27 23:23:15,582 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) [2024-06-27 23:23:15,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:15,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:15,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:23:15,582 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)] === [2024-06-27 23:23:15,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:15,582 INFO L85 PathProgramCache]: Analyzing trace with hash 51791506, now seen corresponding path program 17 times [2024-06-27 23:23:15,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:15,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763665889] [2024-06-27 23:23:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:15,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:17,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:17,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763665889] [2024-06-27 23:23:17,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763665889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:17,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:17,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:17,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565329556] [2024-06-27 23:23:17,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:17,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:17,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:17,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:17,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 301 transitions, 3518 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:17,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:17,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:17,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:17,925 INFO L124 PetriNetUnfolderBase]: 720/1286 cut-off events. [2024-06-27 23:23:17,925 INFO L125 PetriNetUnfolderBase]: For 178425/178425 co-relation queries the response was YES. [2024-06-27 23:23:17,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10649 conditions, 1286 events. 720/1286 cut-off events. For 178425/178425 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6986 event pairs, 55 based on Foata normal form. 2/1286 useless extension candidates. Maximal degree in co-relation 10485. Up to 962 conditions per place. [2024-06-27 23:23:17,940 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 248 selfloop transitions, 73 changer transitions 0/323 dead transitions. [2024-06-27 23:23:17,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 323 transitions, 4467 flow [2024-06-27 23:23:17,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:23:17,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:23:17,941 INFO L175 Difference]: Start difference. First operand has 343 places, 301 transitions, 3518 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:23:17,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 323 transitions, 4467 flow [2024-06-27 23:23:18,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 323 transitions, 4264 flow, removed 46 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:18,692 INFO L231 Difference]: Finished difference. Result has 344 places, 303 transitions, 3510 flow [2024-06-27 23:23:18,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3315, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3510, PETRI_PLACES=344, PETRI_TRANSITIONS=303} [2024-06-27 23:23:18,693 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 315 predicate places. [2024-06-27 23:23:18,693 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 303 transitions, 3510 flow [2024-06-27 23:23:18,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:18,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:18,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:18,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:23:18,693 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)] === [2024-06-27 23:23:18,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1583374705, now seen corresponding path program 18 times [2024-06-27 23:23:18,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:18,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941075171] [2024-06-27 23:23:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:18,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:20,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:20,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:20,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941075171] [2024-06-27 23:23:20,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941075171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:20,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:20,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:20,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342083355] [2024-06-27 23:23:20,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:20,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:20,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:20,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:20,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:20,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:20,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 303 transitions, 3510 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) [2024-06-27 23:23:20,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:20,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:20,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:21,022 INFO L124 PetriNetUnfolderBase]: 736/1312 cut-off events. [2024-06-27 23:23:21,022 INFO L125 PetriNetUnfolderBase]: For 194806/194806 co-relation queries the response was YES. [2024-06-27 23:23:21,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11212 conditions, 1312 events. 736/1312 cut-off events. For 194806/194806 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7167 event pairs, 87 based on Foata normal form. 2/1312 useless extension candidates. Maximal degree in co-relation 11048. Up to 1082 conditions per place. [2024-06-27 23:23:21,038 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 237 selfloop transitions, 88 changer transitions 0/327 dead transitions. [2024-06-27 23:23:21,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 327 transitions, 4650 flow [2024-06-27 23:23:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:23:21,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-27 23:23:21,039 INFO L175 Difference]: Start difference. First operand has 344 places, 303 transitions, 3510 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:23:21,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 327 transitions, 4650 flow [2024-06-27 23:23:21,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 327 transitions, 4491 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:21,926 INFO L231 Difference]: Finished difference. Result has 346 places, 307 transitions, 3737 flow [2024-06-27 23:23:21,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3737, PETRI_PLACES=346, PETRI_TRANSITIONS=307} [2024-06-27 23:23:21,927 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 317 predicate places. [2024-06-27 23:23:21,927 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 307 transitions, 3737 flow [2024-06-27 23:23:21,927 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) [2024-06-27 23:23:21,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:21,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:21,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:23:21,928 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)] === [2024-06-27 23:23:21,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash 134964196, now seen corresponding path program 18 times [2024-06-27 23:23:21,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:21,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469927803] [2024-06-27 23:23:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:21,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:23,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:23,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469927803] [2024-06-27 23:23:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469927803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:23,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:23,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:23,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119140144] [2024-06-27 23:23:23,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:23,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:23,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:23,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:23,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:23,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:23,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 307 transitions, 3737 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) [2024-06-27 23:23:23,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:23,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:23,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:24,266 INFO L124 PetriNetUnfolderBase]: 744/1328 cut-off events. [2024-06-27 23:23:24,266 INFO L125 PetriNetUnfolderBase]: For 195382/195382 co-relation queries the response was YES. [2024-06-27 23:23:24,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11320 conditions, 1328 events. 744/1328 cut-off events. For 195382/195382 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7302 event pairs, 100 based on Foata normal form. 2/1328 useless extension candidates. Maximal degree in co-relation 11156. Up to 1178 conditions per place. [2024-06-27 23:23:24,282 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 257 selfloop transitions, 67 changer transitions 0/326 dead transitions. [2024-06-27 23:23:24,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 326 transitions, 4456 flow [2024-06-27 23:23:24,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:24,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:23:24,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-27 23:23:24,284 INFO L175 Difference]: Start difference. First operand has 346 places, 307 transitions, 3737 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:23:24,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 326 transitions, 4456 flow [2024-06-27 23:23:25,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 326 transitions, 4283 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:25,129 INFO L231 Difference]: Finished difference. Result has 348 places, 309 transitions, 3740 flow [2024-06-27 23:23:25,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3564, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3740, PETRI_PLACES=348, PETRI_TRANSITIONS=309} [2024-06-27 23:23:25,130 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 319 predicate places. [2024-06-27 23:23:25,130 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 309 transitions, 3740 flow [2024-06-27 23:23:25,130 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) [2024-06-27 23:23:25,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:25,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:25,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:23:25,131 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)] === [2024-06-27 23:23:25,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash 134821906, now seen corresponding path program 19 times [2024-06-27 23:23:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:25,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514220182] [2024-06-27 23:23:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:26,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:26,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514220182] [2024-06-27 23:23:26,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514220182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:26,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:26,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944930036] [2024-06-27 23:23:26,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:26,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:26,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:26,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:27,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:27,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 309 transitions, 3740 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:27,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:27,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:27,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:27,612 INFO L124 PetriNetUnfolderBase]: 748/1336 cut-off events. [2024-06-27 23:23:27,613 INFO L125 PetriNetUnfolderBase]: For 193144/193144 co-relation queries the response was YES. [2024-06-27 23:23:27,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11316 conditions, 1336 events. 748/1336 cut-off events. For 193144/193144 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7363 event pairs, 89 based on Foata normal form. 2/1336 useless extension candidates. Maximal degree in co-relation 11152. Up to 1142 conditions per place. [2024-06-27 23:23:27,626 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 256 selfloop transitions, 70 changer transitions 0/328 dead transitions. [2024-06-27 23:23:27,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 328 transitions, 4461 flow [2024-06-27 23:23:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:27,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:23:27,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:23:27,627 INFO L175 Difference]: Start difference. First operand has 348 places, 309 transitions, 3740 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:23:27,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 328 transitions, 4461 flow [2024-06-27 23:23:28,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 328 transitions, 4314 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:28,360 INFO L231 Difference]: Finished difference. Result has 350 places, 310 transitions, 3768 flow [2024-06-27 23:23:28,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3593, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3768, PETRI_PLACES=350, PETRI_TRANSITIONS=310} [2024-06-27 23:23:28,361 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 321 predicate places. [2024-06-27 23:23:28,361 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 310 transitions, 3768 flow [2024-06-27 23:23:28,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:28,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:28,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:28,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:23:28,362 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)] === [2024-06-27 23:23:28,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:28,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1472556990, now seen corresponding path program 20 times [2024-06-27 23:23:28,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:28,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532203967] [2024-06-27 23:23:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:28,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:29,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:29,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532203967] [2024-06-27 23:23:29,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532203967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:29,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:29,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:29,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92455154] [2024-06-27 23:23:29,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:29,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:29,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:29,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:29,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:30,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:30,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 310 transitions, 3768 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) [2024-06-27 23:23:30,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:30,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:30,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:30,571 INFO L124 PetriNetUnfolderBase]: 752/1344 cut-off events. [2024-06-27 23:23:30,572 INFO L125 PetriNetUnfolderBase]: For 193464/193464 co-relation queries the response was YES. [2024-06-27 23:23:30,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11387 conditions, 1344 events. 752/1344 cut-off events. For 193464/193464 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7397 event pairs, 117 based on Foata normal form. 2/1344 useless extension candidates. Maximal degree in co-relation 11222. Up to 1245 conditions per place. [2024-06-27 23:23:30,588 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 278 selfloop transitions, 45 changer transitions 0/325 dead transitions. [2024-06-27 23:23:30,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 325 transitions, 4475 flow [2024-06-27 23:23:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:23:30,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-27 23:23:30,589 INFO L175 Difference]: Start difference. First operand has 350 places, 310 transitions, 3768 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:23:30,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 325 transitions, 4475 flow [2024-06-27 23:23:31,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 325 transitions, 4317 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:31,246 INFO L231 Difference]: Finished difference. Result has 350 places, 311 transitions, 3736 flow [2024-06-27 23:23:31,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3736, PETRI_PLACES=350, PETRI_TRANSITIONS=311} [2024-06-27 23:23:31,247 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 321 predicate places. [2024-06-27 23:23:31,247 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 311 transitions, 3736 flow [2024-06-27 23:23:31,247 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) [2024-06-27 23:23:31,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:31,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:23:31,247 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)] === [2024-06-27 23:23:31,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1472552185, now seen corresponding path program 19 times [2024-06-27 23:23:31,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:31,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215414356] [2024-06-27 23:23:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:31,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:32,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:32,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215414356] [2024-06-27 23:23:32,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215414356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:32,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:32,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:32,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141613509] [2024-06-27 23:23:32,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:32,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:32,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:32,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:32,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:33,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:33,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 311 transitions, 3736 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) [2024-06-27 23:23:33,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:33,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:33,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:33,772 INFO L124 PetriNetUnfolderBase]: 758/1354 cut-off events. [2024-06-27 23:23:33,772 INFO L125 PetriNetUnfolderBase]: For 193941/193941 co-relation queries the response was YES. [2024-06-27 23:23:33,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11451 conditions, 1354 events. 758/1354 cut-off events. For 193941/193941 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7478 event pairs, 113 based on Foata normal form. 2/1354 useless extension candidates. Maximal degree in co-relation 11286. Up to 1185 conditions per place. [2024-06-27 23:23:33,792 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 263 selfloop transitions, 65 changer transitions 0/330 dead transitions. [2024-06-27 23:23:33,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 330 transitions, 4766 flow [2024-06-27 23:23:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:33,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:23:33,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-27 23:23:33,794 INFO L175 Difference]: Start difference. First operand has 350 places, 311 transitions, 3736 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:23:33,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 330 transitions, 4766 flow [2024-06-27 23:23:34,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 330 transitions, 4655 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:34,669 INFO L231 Difference]: Finished difference. Result has 351 places, 313 transitions, 3851 flow [2024-06-27 23:23:34,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3851, PETRI_PLACES=351, PETRI_TRANSITIONS=313} [2024-06-27 23:23:34,669 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 322 predicate places. [2024-06-27 23:23:34,669 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 313 transitions, 3851 flow [2024-06-27 23:23:34,669 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) [2024-06-27 23:23:34,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:34,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:34,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:23:34,670 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)] === [2024-06-27 23:23:34,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:34,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1472699280, now seen corresponding path program 21 times [2024-06-27 23:23:34,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:34,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296535375] [2024-06-27 23:23:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:34,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:36,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:36,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296535375] [2024-06-27 23:23:36,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296535375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:36,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:36,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:36,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527921449] [2024-06-27 23:23:36,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:36,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:36,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:36,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:36,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:36,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:36,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 313 transitions, 3851 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) [2024-06-27 23:23:36,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:36,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:36,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:36,854 INFO L124 PetriNetUnfolderBase]: 762/1362 cut-off events. [2024-06-27 23:23:36,854 INFO L125 PetriNetUnfolderBase]: For 194745/194745 co-relation queries the response was YES. [2024-06-27 23:23:36,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11558 conditions, 1362 events. 762/1362 cut-off events. For 194745/194745 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7545 event pairs, 111 based on Foata normal form. 2/1362 useless extension candidates. Maximal degree in co-relation 11393. Up to 1216 conditions per place. [2024-06-27 23:23:36,872 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 280 selfloop transitions, 48 changer transitions 0/330 dead transitions. [2024-06-27 23:23:36,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 330 transitions, 4794 flow [2024-06-27 23:23:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:23:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:23:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:23:36,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:23:36,873 INFO L175 Difference]: Start difference. First operand has 351 places, 313 transitions, 3851 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:23:36,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 330 transitions, 4794 flow [2024-06-27 23:23:37,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 330 transitions, 4577 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:37,738 INFO L231 Difference]: Finished difference. Result has 351 places, 314 transitions, 3767 flow [2024-06-27 23:23:37,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3636, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3767, PETRI_PLACES=351, PETRI_TRANSITIONS=314} [2024-06-27 23:23:37,739 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 322 predicate places. [2024-06-27 23:23:37,739 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 314 transitions, 3767 flow [2024-06-27 23:23:37,739 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) [2024-06-27 23:23:37,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:37,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:37,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:23:37,739 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)] === [2024-06-27 23:23:37,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:37,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1467932875, now seen corresponding path program 20 times [2024-06-27 23:23:37,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:37,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354799195] [2024-06-27 23:23:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:37,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:39,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:39,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354799195] [2024-06-27 23:23:39,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354799195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:39,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:39,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:39,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856062741] [2024-06-27 23:23:39,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:39,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:39,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:39,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:39,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:39,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:39,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 314 transitions, 3767 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) [2024-06-27 23:23:39,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:39,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:39,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:40,144 INFO L124 PetriNetUnfolderBase]: 750/1344 cut-off events. [2024-06-27 23:23:40,144 INFO L125 PetriNetUnfolderBase]: For 181220/181220 co-relation queries the response was YES. [2024-06-27 23:23:40,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10599 conditions, 1344 events. 750/1344 cut-off events. For 181220/181220 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7464 event pairs, 120 based on Foata normal form. 6/1348 useless extension candidates. Maximal degree in co-relation 10435. Up to 1241 conditions per place. [2024-06-27 23:23:40,161 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 279 selfloop transitions, 47 changer transitions 0/328 dead transitions. [2024-06-27 23:23:40,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 328 transitions, 4463 flow [2024-06-27 23:23:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:23:40,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-27 23:23:40,163 INFO L175 Difference]: Start difference. First operand has 351 places, 314 transitions, 3767 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:23:40,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 328 transitions, 4463 flow [2024-06-27 23:23:40,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 328 transitions, 4248 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:40,817 INFO L231 Difference]: Finished difference. Result has 353 places, 314 transitions, 3663 flow [2024-06-27 23:23:40,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3552, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3663, PETRI_PLACES=353, PETRI_TRANSITIONS=314} [2024-06-27 23:23:40,817 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 324 predicate places. [2024-06-27 23:23:40,817 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 314 transitions, 3663 flow [2024-06-27 23:23:40,817 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) [2024-06-27 23:23:40,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:40,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:40,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:23:40,818 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)] === [2024-06-27 23:23:40,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1468111435, now seen corresponding path program 21 times [2024-06-27 23:23:40,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:40,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031790152] [2024-06-27 23:23:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:40,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:42,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:42,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031790152] [2024-06-27 23:23:42,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031790152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:42,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:42,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:42,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489373260] [2024-06-27 23:23:42,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:42,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:42,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:42,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:42,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 314 transitions, 3663 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) [2024-06-27 23:23:42,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:42,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:42,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:42,950 INFO L124 PetriNetUnfolderBase]: 746/1338 cut-off events. [2024-06-27 23:23:42,950 INFO L125 PetriNetUnfolderBase]: For 144398/144398 co-relation queries the response was YES. [2024-06-27 23:23:42,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10153 conditions, 1338 events. 746/1338 cut-off events. For 144398/144398 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7427 event pairs, 116 based on Foata normal form. 2/1338 useless extension candidates. Maximal degree in co-relation 9988. Up to 1212 conditions per place. [2024-06-27 23:23:42,966 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 272 selfloop transitions, 55 changer transitions 0/329 dead transitions. [2024-06-27 23:23:42,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 329 transitions, 4373 flow [2024-06-27 23:23:42,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:42,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:23:42,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:23:42,967 INFO L175 Difference]: Start difference. First operand has 353 places, 314 transitions, 3663 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:23:42,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 329 transitions, 4373 flow [2024-06-27 23:23:43,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 329 transitions, 4166 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:43,578 INFO L231 Difference]: Finished difference. Result has 354 places, 314 transitions, 3576 flow [2024-06-27 23:23:43,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3576, PETRI_PLACES=354, PETRI_TRANSITIONS=314} [2024-06-27 23:23:43,578 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 325 predicate places. [2024-06-27 23:23:43,578 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 314 transitions, 3576 flow [2024-06-27 23:23:43,579 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) [2024-06-27 23:23:43,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:43,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:43,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:23:43,579 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)] === [2024-06-27 23:23:43,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1468088340, now seen corresponding path program 22 times [2024-06-27 23:23:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578953761] [2024-06-27 23:23:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:43,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:45,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:45,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578953761] [2024-06-27 23:23:45,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578953761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:45,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:45,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:45,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476647485] [2024-06-27 23:23:45,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:45,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:45,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:45,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:45,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:45,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:45,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 314 transitions, 3576 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) [2024-06-27 23:23:45,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:45,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:45,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:45,629 INFO L124 PetriNetUnfolderBase]: 743/1333 cut-off events. [2024-06-27 23:23:45,630 INFO L125 PetriNetUnfolderBase]: For 131359/131359 co-relation queries the response was YES. [2024-06-27 23:23:45,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9789 conditions, 1333 events. 743/1333 cut-off events. For 131359/131359 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7399 event pairs, 119 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 9623. Up to 1252 conditions per place. [2024-06-27 23:23:45,646 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 289 selfloop transitions, 37 changer transitions 0/328 dead transitions. [2024-06-27 23:23:45,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 328 transitions, 4262 flow [2024-06-27 23:23:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 23:23:45,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:23:45,648 INFO L175 Difference]: Start difference. First operand has 354 places, 314 transitions, 3576 flow. Second operand 10 states and 120 transitions. [2024-06-27 23:23:45,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 328 transitions, 4262 flow [2024-06-27 23:23:46,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 328 transitions, 4045 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-27 23:23:46,241 INFO L231 Difference]: Finished difference. Result has 353 places, 314 transitions, 3440 flow [2024-06-27 23:23:46,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3359, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3440, PETRI_PLACES=353, PETRI_TRANSITIONS=314} [2024-06-27 23:23:46,241 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 324 predicate places. [2024-06-27 23:23:46,241 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 314 transitions, 3440 flow [2024-06-27 23:23:46,241 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) [2024-06-27 23:23:46,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:46,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:46,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:23:46,242 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)] === [2024-06-27 23:23:46,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:46,242 INFO L85 PathProgramCache]: Analyzing trace with hash -946495499, now seen corresponding path program 22 times [2024-06-27 23:23:46,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:46,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581061234] [2024-06-27 23:23:46,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:46,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:47,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:47,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581061234] [2024-06-27 23:23:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581061234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:47,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:47,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990289340] [2024-06-27 23:23:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:47,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:47,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:47,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 314 transitions, 3440 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) [2024-06-27 23:23:47,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:47,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:47,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:48,302 INFO L124 PetriNetUnfolderBase]: 754/1351 cut-off events. [2024-06-27 23:23:48,303 INFO L125 PetriNetUnfolderBase]: For 138590/138590 co-relation queries the response was YES. [2024-06-27 23:23:48,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10012 conditions, 1351 events. 754/1351 cut-off events. For 138590/138590 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7524 event pairs, 78 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 9847. Up to 1003 conditions per place. [2024-06-27 23:23:48,317 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 228 selfloop transitions, 105 changer transitions 0/335 dead transitions. [2024-06-27 23:23:48,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 335 transitions, 4598 flow [2024-06-27 23:23:48,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:48,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:23:48,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-27 23:23:48,318 INFO L175 Difference]: Start difference. First operand has 353 places, 314 transitions, 3440 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:23:48,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 335 transitions, 4598 flow [2024-06-27 23:23:48,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 335 transitions, 4506 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:48,953 INFO L231 Difference]: Finished difference. Result has 353 places, 318 transitions, 3757 flow [2024-06-27 23:23:48,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3757, PETRI_PLACES=353, PETRI_TRANSITIONS=318} [2024-06-27 23:23:48,954 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 324 predicate places. [2024-06-27 23:23:48,954 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 318 transitions, 3757 flow [2024-06-27 23:23:48,954 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) [2024-06-27 23:23:48,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:48,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:48,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:23:48,954 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)] === [2024-06-27 23:23:48,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:48,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1730028464, now seen corresponding path program 23 times [2024-06-27 23:23:48,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:48,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527670787] [2024-06-27 23:23:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:48,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:50,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:50,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527670787] [2024-06-27 23:23:50,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527670787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:50,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:50,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:50,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771345028] [2024-06-27 23:23:50,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:50,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:50,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:50,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:50,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:50,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 318 transitions, 3757 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:50,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:50,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:50,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:51,232 INFO L124 PetriNetUnfolderBase]: 758/1359 cut-off events. [2024-06-27 23:23:51,233 INFO L125 PetriNetUnfolderBase]: For 139926/139926 co-relation queries the response was YES. [2024-06-27 23:23:51,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10279 conditions, 1359 events. 758/1359 cut-off events. For 139926/139926 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7585 event pairs, 79 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 10114. Up to 1043 conditions per place. [2024-06-27 23:23:51,245 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 239 selfloop transitions, 94 changer transitions 0/335 dead transitions. [2024-06-27 23:23:51,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 335 transitions, 4533 flow [2024-06-27 23:23:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:23:51,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 23:23:51,246 INFO L175 Difference]: Start difference. First operand has 353 places, 318 transitions, 3757 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:23:51,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 335 transitions, 4533 flow [2024-06-27 23:23:51,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 335 transitions, 4320 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 23:23:51,915 INFO L231 Difference]: Finished difference. Result has 356 places, 319 transitions, 3774 flow [2024-06-27 23:23:51,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3544, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3774, PETRI_PLACES=356, PETRI_TRANSITIONS=319} [2024-06-27 23:23:51,916 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 327 predicate places. [2024-06-27 23:23:51,916 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 319 transitions, 3774 flow [2024-06-27 23:23:51,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:51,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:51,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:51,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:23:51,917 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)] === [2024-06-27 23:23:51,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:51,917 INFO L85 PathProgramCache]: Analyzing trace with hash -946499374, now seen corresponding path program 24 times [2024-06-27 23:23:51,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:51,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308122865] [2024-06-27 23:23:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:51,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:53,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:53,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308122865] [2024-06-27 23:23:53,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308122865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:53,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:53,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:53,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766701368] [2024-06-27 23:23:53,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:53,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:53,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:53,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:53,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:53,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:23:53,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 319 transitions, 3774 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) [2024-06-27 23:23:53,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:53,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:23:53,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:54,114 INFO L124 PetriNetUnfolderBase]: 762/1367 cut-off events. [2024-06-27 23:23:54,114 INFO L125 PetriNetUnfolderBase]: For 138345/138345 co-relation queries the response was YES. [2024-06-27 23:23:54,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10388 conditions, 1367 events. 762/1367 cut-off events. For 138345/138345 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7633 event pairs, 92 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 10222. Up to 1165 conditions per place. [2024-06-27 23:23:54,130 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 262 selfloop transitions, 72 changer transitions 0/336 dead transitions. [2024-06-27 23:23:54,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 336 transitions, 4756 flow [2024-06-27 23:23:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:23:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:23:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:23:54,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 23:23:54,132 INFO L175 Difference]: Start difference. First operand has 356 places, 319 transitions, 3774 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:23:54,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 336 transitions, 4756 flow [2024-06-27 23:23:54,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 336 transitions, 4532 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:54,689 INFO L231 Difference]: Finished difference. Result has 357 places, 322 transitions, 3788 flow [2024-06-27 23:23:54,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3556, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3788, PETRI_PLACES=357, PETRI_TRANSITIONS=322} [2024-06-27 23:23:54,689 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 328 predicate places. [2024-06-27 23:23:54,690 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 322 transitions, 3788 flow [2024-06-27 23:23:54,690 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) [2024-06-27 23:23:54,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:54,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:54,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:23:54,691 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)] === [2024-06-27 23:23:54,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1730172769, now seen corresponding path program 23 times [2024-06-27 23:23:54,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:54,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472280452] [2024-06-27 23:23:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:54,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:56,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:56,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472280452] [2024-06-27 23:23:56,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472280452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:56,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:56,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:56,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101366816] [2024-06-27 23:23:56,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:56,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:56,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:56,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:56,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:56,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:56,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 322 transitions, 3788 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:56,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:56,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:56,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:57,048 INFO L124 PetriNetUnfolderBase]: 768/1377 cut-off events. [2024-06-27 23:23:57,049 INFO L125 PetriNetUnfolderBase]: For 138471/138471 co-relation queries the response was YES. [2024-06-27 23:23:57,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10444 conditions, 1377 events. 768/1377 cut-off events. For 138471/138471 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7712 event pairs, 80 based on Foata normal form. 2/1377 useless extension candidates. Maximal degree in co-relation 10278. Up to 1090 conditions per place. [2024-06-27 23:23:57,065 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 248 selfloop transitions, 91 changer transitions 0/341 dead transitions. [2024-06-27 23:23:57,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 341 transitions, 4640 flow [2024-06-27 23:23:57,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:57,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:23:57,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-27 23:23:57,066 INFO L175 Difference]: Start difference. First operand has 357 places, 322 transitions, 3788 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:23:57,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 341 transitions, 4640 flow [2024-06-27 23:23:57,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 341 transitions, 4433 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:57,696 INFO L231 Difference]: Finished difference. Result has 359 places, 324 transitions, 3852 flow [2024-06-27 23:23:57,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3581, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3852, PETRI_PLACES=359, PETRI_TRANSITIONS=324} [2024-06-27 23:23:57,696 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 330 predicate places. [2024-06-27 23:23:57,696 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 324 transitions, 3852 flow [2024-06-27 23:23:57,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:57,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:57,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:57,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:23:57,697 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)] === [2024-06-27 23:23:57,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1730172614, now seen corresponding path program 25 times [2024-06-27 23:23:57,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:57,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027720842] [2024-06-27 23:23:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:57,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:59,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:59,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027720842] [2024-06-27 23:23:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027720842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:59,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:59,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:59,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029211162] [2024-06-27 23:23:59,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:59,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:59,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:59,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:59,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 324 transitions, 3852 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) [2024-06-27 23:23:59,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:59,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:59,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:59,898 INFO L124 PetriNetUnfolderBase]: 788/1421 cut-off events. [2024-06-27 23:23:59,898 INFO L125 PetriNetUnfolderBase]: For 197587/197587 co-relation queries the response was YES. [2024-06-27 23:23:59,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10629 conditions, 1421 events. 788/1421 cut-off events. For 197587/197587 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8037 event pairs, 83 based on Foata normal form. 12/1431 useless extension candidates. Maximal degree in co-relation 10464. Up to 1101 conditions per place. [2024-06-27 23:23:59,915 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 256 selfloop transitions, 79 changer transitions 9/346 dead transitions. [2024-06-27 23:23:59,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 346 transitions, 4759 flow [2024-06-27 23:23:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:23:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:23:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:23:59,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2024-06-27 23:23:59,917 INFO L175 Difference]: Start difference. First operand has 359 places, 324 transitions, 3852 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:23:59,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 346 transitions, 4759 flow [2024-06-27 23:24:00,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 346 transitions, 4420 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:00,585 INFO L231 Difference]: Finished difference. Result has 357 places, 321 transitions, 3669 flow [2024-06-27 23:24:00,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3519, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3669, PETRI_PLACES=357, PETRI_TRANSITIONS=321} [2024-06-27 23:24:00,586 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 328 predicate places. [2024-06-27 23:24:00,586 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 321 transitions, 3669 flow [2024-06-27 23:24:00,586 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) [2024-06-27 23:24:00,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:00,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:00,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:24:00,587 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)] === [2024-06-27 23:24:00,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash -940773643, now seen corresponding path program 6 times [2024-06-27 23:24:00,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:00,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412737911] [2024-06-27 23:24:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:00,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:02,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:02,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412737911] [2024-06-27 23:24:02,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412737911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:02,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:02,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:24:02,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335260220] [2024-06-27 23:24:02,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:02,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:24:02,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:02,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:24:02,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:24:03,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:03,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 321 transitions, 3669 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) [2024-06-27 23:24:03,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:03,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:03,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:03,625 INFO L124 PetriNetUnfolderBase]: 755/1362 cut-off events. [2024-06-27 23:24:03,625 INFO L125 PetriNetUnfolderBase]: For 126847/126847 co-relation queries the response was YES. [2024-06-27 23:24:03,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9691 conditions, 1362 events. 755/1362 cut-off events. For 126847/126847 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7676 event pairs, 122 based on Foata normal form. 2/1362 useless extension candidates. Maximal degree in co-relation 9529. Up to 1272 conditions per place. [2024-06-27 23:24:03,641 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 300 selfloop transitions, 34 changer transitions 0/336 dead transitions. [2024-06-27 23:24:03,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 336 transitions, 4393 flow [2024-06-27 23:24:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:24:03,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-27 23:24:03,642 INFO L175 Difference]: Start difference. First operand has 357 places, 321 transitions, 3669 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:24:03,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 336 transitions, 4393 flow [2024-06-27 23:24:04,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 336 transitions, 4219 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:24:04,191 INFO L231 Difference]: Finished difference. Result has 360 places, 321 transitions, 3567 flow [2024-06-27 23:24:04,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3495, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3567, PETRI_PLACES=360, PETRI_TRANSITIONS=321} [2024-06-27 23:24:04,191 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 331 predicate places. [2024-06-27 23:24:04,191 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 321 transitions, 3567 flow [2024-06-27 23:24:04,191 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) [2024-06-27 23:24:04,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:04,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:04,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:24:04,193 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)] === [2024-06-27 23:24:04,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:04,193 INFO L85 PathProgramCache]: Analyzing trace with hash -940989124, now seen corresponding path program 26 times [2024-06-27 23:24:04,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:04,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291910203] [2024-06-27 23:24:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:04,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:05,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:05,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291910203] [2024-06-27 23:24:05,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291910203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:05,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:05,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:24:05,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754543566] [2024-06-27 23:24:05,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:05,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:24:05,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:05,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:24:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:24:06,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:24:06,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 321 transitions, 3567 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) [2024-06-27 23:24:06,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:06,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:24:06,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:06,536 INFO L124 PetriNetUnfolderBase]: 768/1393 cut-off events. [2024-06-27 23:24:06,537 INFO L125 PetriNetUnfolderBase]: For 174201/174201 co-relation queries the response was YES. [2024-06-27 23:24:06,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9555 conditions, 1393 events. 768/1393 cut-off events. For 174201/174201 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7883 event pairs, 81 based on Foata normal form. 12/1403 useless extension candidates. Maximal degree in co-relation 9391. Up to 1065 conditions per place. [2024-06-27 23:24:06,552 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 250 selfloop transitions, 78 changer transitions 11/341 dead transitions. [2024-06-27 23:24:06,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 341 transitions, 4423 flow [2024-06-27 23:24:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:24:06,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:24:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-27 23:24:06,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 23:24:06,553 INFO L175 Difference]: Start difference. First operand has 360 places, 321 transitions, 3567 flow. Second operand 9 states and 130 transitions. [2024-06-27 23:24:06,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 341 transitions, 4423 flow [2024-06-27 23:24:07,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 341 transitions, 4280 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:07,066 INFO L231 Difference]: Finished difference. Result has 358 places, 315 transitions, 3526 flow [2024-06-27 23:24:07,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3526, PETRI_PLACES=358, PETRI_TRANSITIONS=315} [2024-06-27 23:24:07,066 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 329 predicate places. [2024-06-27 23:24:07,066 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 315 transitions, 3526 flow [2024-06-27 23:24:07,067 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) [2024-06-27 23:24:07,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:07,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:07,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 23:24:07,067 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)] === [2024-06-27 23:24:07,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:07,067 INFO L85 PathProgramCache]: Analyzing trace with hash -940988969, now seen corresponding path program 24 times [2024-06-27 23:24:07,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:07,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109937676] [2024-06-27 23:24:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:07,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:08,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:08,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109937676] [2024-06-27 23:24:08,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109937676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:08,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:08,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:08,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023343273] [2024-06-27 23:24:08,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:08,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:08,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:08,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:08,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:24:08,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 315 transitions, 3526 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:08,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:08,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:24:08,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:09,307 INFO L124 PetriNetUnfolderBase]: 726/1325 cut-off events. [2024-06-27 23:24:09,307 INFO L125 PetriNetUnfolderBase]: For 103124/103124 co-relation queries the response was YES. [2024-06-27 23:24:09,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8848 conditions, 1325 events. 726/1325 cut-off events. For 103124/103124 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7557 event pairs, 77 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 8686. Up to 1050 conditions per place. [2024-06-27 23:24:09,322 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 242 selfloop transitions, 86 changer transitions 0/330 dead transitions. [2024-06-27 23:24:09,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 330 transitions, 4256 flow [2024-06-27 23:24:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:24:09,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-06-27 23:24:09,324 INFO L175 Difference]: Start difference. First operand has 358 places, 315 transitions, 3526 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:24:09,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 330 transitions, 4256 flow [2024-06-27 23:24:09,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 330 transitions, 3879 flow, removed 28 selfloop flow, removed 13 redundant places. [2024-06-27 23:24:09,800 INFO L231 Difference]: Finished difference. Result has 355 places, 315 transitions, 3330 flow [2024-06-27 23:24:09,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3149, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3330, PETRI_PLACES=355, PETRI_TRANSITIONS=315} [2024-06-27 23:24:09,804 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 326 predicate places. [2024-06-27 23:24:09,804 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 315 transitions, 3330 flow [2024-06-27 23:24:09,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:09,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:09,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:09,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 23:24:09,805 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)] === [2024-06-27 23:24:09,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1268906491, now seen corresponding path program 1 times [2024-06-27 23:24:09,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:09,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044237037] [2024-06-27 23:24:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:11,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:11,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044237037] [2024-06-27 23:24:11,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044237037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:11,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:11,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:11,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856993773] [2024-06-27 23:24:11,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:11,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:11,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:11,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:11,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:11,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:11,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 315 transitions, 3330 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) [2024-06-27 23:24:11,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:11,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:11,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:12,469 INFO L124 PetriNetUnfolderBase]: 767/1412 cut-off events. [2024-06-27 23:24:12,470 INFO L125 PetriNetUnfolderBase]: For 197342/197342 co-relation queries the response was YES. [2024-06-27 23:24:12,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10300 conditions, 1412 events. 767/1412 cut-off events. For 197342/197342 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8099 event pairs, 195 based on Foata normal form. 8/1418 useless extension candidates. Maximal degree in co-relation 10139. Up to 1119 conditions per place. [2024-06-27 23:24:12,490 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 298 selfloop transitions, 31 changer transitions 14/345 dead transitions. [2024-06-27 23:24:12,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 345 transitions, 4478 flow [2024-06-27 23:24:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:24:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:24:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-27 23:24:12,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382051282051282 [2024-06-27 23:24:12,491 INFO L175 Difference]: Start difference. First operand has 355 places, 315 transitions, 3330 flow. Second operand 13 states and 149 transitions. [2024-06-27 23:24:12,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 345 transitions, 4478 flow [2024-06-27 23:24:13,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 345 transitions, 4212 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:13,466 INFO L231 Difference]: Finished difference. Result has 358 places, 311 transitions, 3085 flow [2024-06-27 23:24:13,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3064, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3085, PETRI_PLACES=358, PETRI_TRANSITIONS=311} [2024-06-27 23:24:13,467 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 329 predicate places. [2024-06-27 23:24:13,467 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 311 transitions, 3085 flow [2024-06-27 23:24:13,467 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) [2024-06-27 23:24:13,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:13,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:13,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 23:24:13,468 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)] === [2024-06-27 23:24:13,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:13,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1327114261, now seen corresponding path program 2 times [2024-06-27 23:24:13,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:13,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624171749] [2024-06-27 23:24:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:15,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:15,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624171749] [2024-06-27 23:24:15,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624171749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:15,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:15,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:15,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802953634] [2024-06-27 23:24:15,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:15,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:15,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:15,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:15,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:15,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 311 transitions, 3085 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) [2024-06-27 23:24:15,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:15,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:15,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:16,063 INFO L124 PetriNetUnfolderBase]: 780/1441 cut-off events. [2024-06-27 23:24:16,063 INFO L125 PetriNetUnfolderBase]: For 262881/262881 co-relation queries the response was YES. [2024-06-27 23:24:16,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11413 conditions, 1441 events. 780/1441 cut-off events. For 262881/262881 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8231 event pairs, 210 based on Foata normal form. 8/1447 useless extension candidates. Maximal degree in co-relation 11252. Up to 1271 conditions per place. [2024-06-27 23:24:16,080 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 300 selfloop transitions, 27 changer transitions 7/336 dead transitions. [2024-06-27 23:24:16,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 336 transitions, 4193 flow [2024-06-27 23:24:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:24:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:24:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-27 23:24:16,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37435897435897436 [2024-06-27 23:24:16,081 INFO L175 Difference]: Start difference. First operand has 358 places, 311 transitions, 3085 flow. Second operand 13 states and 146 transitions. [2024-06-27 23:24:16,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 336 transitions, 4193 flow [2024-06-27 23:24:16,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 336 transitions, 4130 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:16,955 INFO L231 Difference]: Finished difference. Result has 355 places, 309 transitions, 3059 flow [2024-06-27 23:24:16,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3059, PETRI_PLACES=355, PETRI_TRANSITIONS=309} [2024-06-27 23:24:16,955 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 326 predicate places. [2024-06-27 23:24:16,955 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 309 transitions, 3059 flow [2024-06-27 23:24:16,955 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) [2024-06-27 23:24:16,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:16,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:16,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 23:24:16,956 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)] === [2024-06-27 23:24:16,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1327118911, now seen corresponding path program 3 times [2024-06-27 23:24:16,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:16,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739597009] [2024-06-27 23:24:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:16,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:18,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739597009] [2024-06-27 23:24:18,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739597009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:18,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:18,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61618669] [2024-06-27 23:24:18,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:18,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:18,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:18,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 309 transitions, 3059 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) [2024-06-27 23:24:18,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:18,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:18,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:19,514 INFO L124 PetriNetUnfolderBase]: 749/1380 cut-off events. [2024-06-27 23:24:19,514 INFO L125 PetriNetUnfolderBase]: For 214081/214081 co-relation queries the response was YES. [2024-06-27 23:24:19,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9938 conditions, 1380 events. 749/1380 cut-off events. For 214081/214081 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7845 event pairs, 201 based on Foata normal form. 10/1388 useless extension candidates. Maximal degree in co-relation 9778. Up to 1271 conditions per place. [2024-06-27 23:24:19,530 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 290 selfloop transitions, 24 changer transitions 13/329 dead transitions. [2024-06-27 23:24:19,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 329 transitions, 3863 flow [2024-06-27 23:24:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 23:24:19,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-27 23:24:19,536 INFO L175 Difference]: Start difference. First operand has 355 places, 309 transitions, 3059 flow. Second operand 12 states and 134 transitions. [2024-06-27 23:24:19,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 329 transitions, 3863 flow [2024-06-27 23:24:20,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 329 transitions, 3807 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:20,263 INFO L231 Difference]: Finished difference. Result has 354 places, 305 transitions, 3012 flow [2024-06-27 23:24:20,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3012, PETRI_PLACES=354, PETRI_TRANSITIONS=305} [2024-06-27 23:24:20,268 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 325 predicate places. [2024-06-27 23:24:20,268 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 305 transitions, 3012 flow [2024-06-27 23:24:20,268 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) [2024-06-27 23:24:20,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:20,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:20,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 23:24:20,269 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)] === [2024-06-27 23:24:20,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:20,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1326998941, now seen corresponding path program 4 times [2024-06-27 23:24:20,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:20,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036285775] [2024-06-27 23:24:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:20,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036285775] [2024-06-27 23:24:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036285775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:21,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:21,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118658860] [2024-06-27 23:24:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:21,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:21,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:21,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:21,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:22,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:22,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 305 transitions, 3012 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) [2024-06-27 23:24:22,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:22,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:22,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:22,801 INFO L124 PetriNetUnfolderBase]: 736/1357 cut-off events. [2024-06-27 23:24:22,801 INFO L125 PetriNetUnfolderBase]: For 200149/200149 co-relation queries the response was YES. [2024-06-27 23:24:22,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9750 conditions, 1357 events. 736/1357 cut-off events. For 200149/200149 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7691 event pairs, 193 based on Foata normal form. 8/1363 useless extension candidates. Maximal degree in co-relation 9590. Up to 1238 conditions per place. [2024-06-27 23:24:22,817 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 283 selfloop transitions, 26 changer transitions 16/327 dead transitions. [2024-06-27 23:24:22,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 327 transitions, 3780 flow [2024-06-27 23:24:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:24:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:24:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-27 23:24:22,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-06-27 23:24:22,818 INFO L175 Difference]: Start difference. First operand has 354 places, 305 transitions, 3012 flow. Second operand 13 states and 140 transitions. [2024-06-27 23:24:22,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 327 transitions, 3780 flow [2024-06-27 23:24:23,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 327 transitions, 3722 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:23,504 INFO L231 Difference]: Finished difference. Result has 352 places, 300 transitions, 2941 flow [2024-06-27 23:24:23,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2941, PETRI_PLACES=352, PETRI_TRANSITIONS=300} [2024-06-27 23:24:23,508 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 323 predicate places. [2024-06-27 23:24:23,508 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 300 transitions, 2941 flow [2024-06-27 23:24:23,508 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) [2024-06-27 23:24:23,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:23,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:23,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 23:24:23,509 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)] === [2024-06-27 23:24:23,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:23,509 INFO L85 PathProgramCache]: Analyzing trace with hash -275760645, now seen corresponding path program 5 times [2024-06-27 23:24:23,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:23,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377313758] [2024-06-27 23:24:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:23,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:25,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377313758] [2024-06-27 23:24:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377313758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:25,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:25,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854742294] [2024-06-27 23:24:25,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:25,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:25,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:25,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 300 transitions, 2941 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) [2024-06-27 23:24:25,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:25,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:25,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:26,360 INFO L124 PetriNetUnfolderBase]: 727/1339 cut-off events. [2024-06-27 23:24:26,360 INFO L125 PetriNetUnfolderBase]: For 213968/213968 co-relation queries the response was YES. [2024-06-27 23:24:26,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9692 conditions, 1339 events. 727/1339 cut-off events. For 213968/213968 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7579 event pairs, 197 based on Foata normal form. 10/1347 useless extension candidates. Maximal degree in co-relation 9532. Up to 1249 conditions per place. [2024-06-27 23:24:26,377 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 290 selfloop transitions, 14 changer transitions 13/319 dead transitions. [2024-06-27 23:24:26,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 319 transitions, 3723 flow [2024-06-27 23:24:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:26,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 23:24:26,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:24:26,378 INFO L175 Difference]: Start difference. First operand has 352 places, 300 transitions, 2941 flow. Second operand 12 states and 126 transitions. [2024-06-27 23:24:26,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 319 transitions, 3723 flow [2024-06-27 23:24:27,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 319 transitions, 3651 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:27,172 INFO L231 Difference]: Finished difference. Result has 346 places, 295 transitions, 2845 flow [2024-06-27 23:24:27,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2869, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2845, PETRI_PLACES=346, PETRI_TRANSITIONS=295} [2024-06-27 23:24:27,173 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 317 predicate places. [2024-06-27 23:24:27,173 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 295 transitions, 2845 flow [2024-06-27 23:24:27,173 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) [2024-06-27 23:24:27,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:27,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:27,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 23:24:27,174 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)] === [2024-06-27 23:24:27,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:27,175 INFO L85 PathProgramCache]: Analyzing trace with hash -280402275, now seen corresponding path program 6 times [2024-06-27 23:24:27,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:27,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347646150] [2024-06-27 23:24:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:27,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:29,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:29,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347646150] [2024-06-27 23:24:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347646150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:29,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:29,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:29,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2859464] [2024-06-27 23:24:29,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:29,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:29,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:29,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:29,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:29,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:29,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 295 transitions, 2845 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) [2024-06-27 23:24:29,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:29,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:29,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:29,808 INFO L124 PetriNetUnfolderBase]: 714/1320 cut-off events. [2024-06-27 23:24:29,809 INFO L125 PetriNetUnfolderBase]: For 213711/213711 co-relation queries the response was YES. [2024-06-27 23:24:29,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9516 conditions, 1320 events. 714/1320 cut-off events. For 213711/213711 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7449 event pairs, 197 based on Foata normal form. 10/1328 useless extension candidates. Maximal degree in co-relation 9357. Up to 1222 conditions per place. [2024-06-27 23:24:29,820 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 280 selfloop transitions, 19 changer transitions 12/313 dead transitions. [2024-06-27 23:24:29,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 313 transitions, 3611 flow [2024-06-27 23:24:29,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:29,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:24:29,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 23:24:29,821 INFO L175 Difference]: Start difference. First operand has 346 places, 295 transitions, 2845 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:24:29,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 313 transitions, 3611 flow [2024-06-27 23:24:30,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 313 transitions, 3573 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:30,493 INFO L231 Difference]: Finished difference. Result has 343 places, 290 transitions, 2803 flow [2024-06-27 23:24:30,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2803, PETRI_PLACES=343, PETRI_TRANSITIONS=290} [2024-06-27 23:24:30,497 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 314 predicate places. [2024-06-27 23:24:30,497 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 290 transitions, 2803 flow [2024-06-27 23:24:30,497 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) [2024-06-27 23:24:30,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:30,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:30,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 23:24:30,497 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)] === [2024-06-27 23:24:30,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:30,498 INFO L85 PathProgramCache]: Analyzing trace with hash -275753701, now seen corresponding path program 1 times [2024-06-27 23:24:30,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:30,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328694533] [2024-06-27 23:24:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:30,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:32,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:32,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328694533] [2024-06-27 23:24:32,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328694533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:32,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:32,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:32,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426289216] [2024-06-27 23:24:32,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:32,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:32,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:32,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:32,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:32,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:32,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 290 transitions, 2803 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) [2024-06-27 23:24:32,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:32,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:32,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:32,743 INFO L124 PetriNetUnfolderBase]: 694/1280 cut-off events. [2024-06-27 23:24:32,743 INFO L125 PetriNetUnfolderBase]: For 164969/164969 co-relation queries the response was YES. [2024-06-27 23:24:32,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9245 conditions, 1280 events. 694/1280 cut-off events. For 164969/164969 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7179 event pairs, 191 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 9087. Up to 1239 conditions per place. [2024-06-27 23:24:32,757 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 287 selfloop transitions, 15 changer transitions 0/304 dead transitions. [2024-06-27 23:24:32,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 304 transitions, 3469 flow [2024-06-27 23:24:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 23:24:32,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-27 23:24:32,758 INFO L175 Difference]: Start difference. First operand has 343 places, 290 transitions, 2803 flow. Second operand 11 states and 112 transitions. [2024-06-27 23:24:32,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 304 transitions, 3469 flow [2024-06-27 23:24:33,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 304 transitions, 3419 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:33,457 INFO L231 Difference]: Finished difference. Result has 340 places, 291 transitions, 2811 flow [2024-06-27 23:24:33,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2755, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2811, PETRI_PLACES=340, PETRI_TRANSITIONS=291} [2024-06-27 23:24:33,457 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 311 predicate places. [2024-06-27 23:24:33,457 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 291 transitions, 2811 flow [2024-06-27 23:24:33,457 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) [2024-06-27 23:24:33,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:33,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:33,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 23:24:33,459 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)] === [2024-06-27 23:24:33,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash -280406925, now seen corresponding path program 7 times [2024-06-27 23:24:33,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:33,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871774523] [2024-06-27 23:24:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:33,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:35,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:35,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871774523] [2024-06-27 23:24:35,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871774523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:35,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:35,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:35,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840961427] [2024-06-27 23:24:35,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:35,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:35,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:35,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:35,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:35,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 291 transitions, 2811 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) [2024-06-27 23:24:35,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:35,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:35,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:35,663 INFO L124 PetriNetUnfolderBase]: 706/1308 cut-off events. [2024-06-27 23:24:35,664 INFO L125 PetriNetUnfolderBase]: For 196646/196646 co-relation queries the response was YES. [2024-06-27 23:24:35,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9298 conditions, 1308 events. 706/1308 cut-off events. For 196646/196646 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7378 event pairs, 191 based on Foata normal form. 8/1314 useless extension candidates. Maximal degree in co-relation 9141. Up to 1229 conditions per place. [2024-06-27 23:24:35,678 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 279 selfloop transitions, 16 changer transitions 13/310 dead transitions. [2024-06-27 23:24:35,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 310 transitions, 3523 flow [2024-06-27 23:24:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 23:24:35,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 23:24:35,680 INFO L175 Difference]: Start difference. First operand has 340 places, 291 transitions, 2811 flow. Second operand 12 states and 128 transitions. [2024-06-27 23:24:35,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 310 transitions, 3523 flow [2024-06-27 23:24:36,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 310 transitions, 3477 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:36,326 INFO L231 Difference]: Finished difference. Result has 344 places, 288 transitions, 2772 flow [2024-06-27 23:24:36,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2772, PETRI_PLACES=344, PETRI_TRANSITIONS=288} [2024-06-27 23:24:36,327 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 315 predicate places. [2024-06-27 23:24:36,327 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 288 transitions, 2772 flow [2024-06-27 23:24:36,327 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) [2024-06-27 23:24:36,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:36,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:36,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 23:24:36,327 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)] === [2024-06-27 23:24:36,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:36,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1936930333, now seen corresponding path program 8 times [2024-06-27 23:24:36,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:36,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184265920] [2024-06-27 23:24:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:36,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:38,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:38,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184265920] [2024-06-27 23:24:38,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184265920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:38,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:38,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:38,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427564528] [2024-06-27 23:24:38,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:38,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:38,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:38,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:38,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 288 transitions, 2772 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) [2024-06-27 23:24:38,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:38,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:38,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:38,719 INFO L124 PetriNetUnfolderBase]: 696/1290 cut-off events. [2024-06-27 23:24:38,719 INFO L125 PetriNetUnfolderBase]: For 205026/205026 co-relation queries the response was YES. [2024-06-27 23:24:38,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9064 conditions, 1290 events. 696/1290 cut-off events. For 205026/205026 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7273 event pairs, 196 based on Foata normal form. 10/1298 useless extension candidates. Maximal degree in co-relation 8905. Up to 1210 conditions per place. [2024-06-27 23:24:38,734 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 277 selfloop transitions, 14 changer transitions 12/305 dead transitions. [2024-06-27 23:24:38,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 305 transitions, 3510 flow [2024-06-27 23:24:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 23:24:38,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-27 23:24:38,735 INFO L175 Difference]: Start difference. First operand has 344 places, 288 transitions, 2772 flow. Second operand 11 states and 119 transitions. [2024-06-27 23:24:38,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 305 transitions, 3510 flow [2024-06-27 23:24:39,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 305 transitions, 3464 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:39,297 INFO L231 Difference]: Finished difference. Result has 340 places, 283 transitions, 2714 flow [2024-06-27 23:24:39,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2714, PETRI_PLACES=340, PETRI_TRANSITIONS=283} [2024-06-27 23:24:39,297 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 311 predicate places. [2024-06-27 23:24:39,297 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 283 transitions, 2714 flow [2024-06-27 23:24:39,297 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) [2024-06-27 23:24:39,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:39,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:39,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 23:24:39,298 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)] === [2024-06-27 23:24:39,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:39,298 INFO L85 PathProgramCache]: Analyzing trace with hash -275938275, now seen corresponding path program 9 times [2024-06-27 23:24:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:39,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153848543] [2024-06-27 23:24:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:40,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153848543] [2024-06-27 23:24:40,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153848543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:40,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:40,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:40,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614821398] [2024-06-27 23:24:40,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:40,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:40,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:40,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:40,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:40,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:40,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 283 transitions, 2714 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) [2024-06-27 23:24:40,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:40,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:40,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:41,462 INFO L124 PetriNetUnfolderBase]: 676/1250 cut-off events. [2024-06-27 23:24:41,462 INFO L125 PetriNetUnfolderBase]: For 151915/151915 co-relation queries the response was YES. [2024-06-27 23:24:41,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8659 conditions, 1250 events. 676/1250 cut-off events. For 151915/151915 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7008 event pairs, 188 based on Foata normal form. 2/1250 useless extension candidates. Maximal degree in co-relation 8501. Up to 1204 conditions per place. [2024-06-27 23:24:41,477 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 280 selfloop transitions, 16 changer transitions 0/298 dead transitions. [2024-06-27 23:24:41,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 298 transitions, 3350 flow [2024-06-27 23:24:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 23:24:41,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-27 23:24:41,478 INFO L175 Difference]: Start difference. First operand has 340 places, 283 transitions, 2714 flow. Second operand 11 states and 114 transitions. [2024-06-27 23:24:41,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 298 transitions, 3350 flow [2024-06-27 23:24:42,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 298 transitions, 3309 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:42,033 INFO L231 Difference]: Finished difference. Result has 337 places, 284 transitions, 2721 flow [2024-06-27 23:24:42,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2721, PETRI_PLACES=337, PETRI_TRANSITIONS=284} [2024-06-27 23:24:42,034 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 308 predicate places. [2024-06-27 23:24:42,034 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 284 transitions, 2721 flow [2024-06-27 23:24:42,034 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) [2024-06-27 23:24:42,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:42,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:42,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 23:24:42,034 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)] === [2024-06-27 23:24:42,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:42,035 INFO L85 PathProgramCache]: Analyzing trace with hash -280522245, now seen corresponding path program 10 times [2024-06-27 23:24:42,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:42,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973051602] [2024-06-27 23:24:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:42,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:43,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:43,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973051602] [2024-06-27 23:24:43,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973051602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:43,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:43,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:43,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917705363] [2024-06-27 23:24:43,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:43,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:43,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:43,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:43,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 284 transitions, 2721 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) [2024-06-27 23:24:43,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:43,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:43,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:44,419 INFO L124 PetriNetUnfolderBase]: 681/1265 cut-off events. [2024-06-27 23:24:44,419 INFO L125 PetriNetUnfolderBase]: For 174680/174680 co-relation queries the response was YES. [2024-06-27 23:24:44,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8614 conditions, 1265 events. 681/1265 cut-off events. For 174680/174680 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7118 event pairs, 187 based on Foata normal form. 8/1271 useless extension candidates. Maximal degree in co-relation 8457. Up to 1133 conditions per place. [2024-06-27 23:24:44,433 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 280 selfloop transitions, 12 changer transitions 11/305 dead transitions. [2024-06-27 23:24:44,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 305 transitions, 3699 flow [2024-06-27 23:24:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:24:44,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 23:24:44,434 INFO L175 Difference]: Start difference. First operand has 337 places, 284 transitions, 2721 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:24:44,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 305 transitions, 3699 flow [2024-06-27 23:24:44,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 305 transitions, 3653 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:44,920 INFO L231 Difference]: Finished difference. Result has 338 places, 280 transitions, 2659 flow [2024-06-27 23:24:44,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2659, PETRI_PLACES=338, PETRI_TRANSITIONS=280} [2024-06-27 23:24:44,920 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 309 predicate places. [2024-06-27 23:24:44,920 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 280 transitions, 2659 flow [2024-06-27 23:24:44,921 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) [2024-06-27 23:24:44,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:44,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:44,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 23:24:44,921 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)] === [2024-06-27 23:24:44,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1479113017, now seen corresponding path program 11 times [2024-06-27 23:24:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:44,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047886008] [2024-06-27 23:24:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:44,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:46,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:46,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047886008] [2024-06-27 23:24:46,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047886008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:46,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:46,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:46,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807101086] [2024-06-27 23:24:46,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:46,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:46,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:46,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:46,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:46,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:46,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 280 transitions, 2659 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) [2024-06-27 23:24:46,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:46,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:46,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:47,332 INFO L124 PetriNetUnfolderBase]: 699/1303 cut-off events. [2024-06-27 23:24:47,332 INFO L125 PetriNetUnfolderBase]: For 237510/237510 co-relation queries the response was YES. [2024-06-27 23:24:47,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9930 conditions, 1303 events. 699/1303 cut-off events. For 237510/237510 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7350 event pairs, 196 based on Foata normal form. 8/1309 useless extension candidates. Maximal degree in co-relation 9773. Up to 945 conditions per place. [2024-06-27 23:24:47,347 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 235 selfloop transitions, 58 changer transitions 10/305 dead transitions. [2024-06-27 23:24:47,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 305 transitions, 3711 flow [2024-06-27 23:24:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:47,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 23:24:47,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 23:24:47,348 INFO L175 Difference]: Start difference. First operand has 338 places, 280 transitions, 2659 flow. Second operand 12 states and 148 transitions. [2024-06-27 23:24:47,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 305 transitions, 3711 flow [2024-06-27 23:24:48,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 305 transitions, 3664 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:48,024 INFO L231 Difference]: Finished difference. Result has 335 places, 277 transitions, 2705 flow [2024-06-27 23:24:48,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2705, PETRI_PLACES=335, PETRI_TRANSITIONS=277} [2024-06-27 23:24:48,024 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 306 predicate places. [2024-06-27 23:24:48,024 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 277 transitions, 2705 flow [2024-06-27 23:24:48,024 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) [2024-06-27 23:24:48,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:48,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:48,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 23:24:48,025 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)] === [2024-06-27 23:24:48,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:48,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1721335589, now seen corresponding path program 12 times [2024-06-27 23:24:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:48,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059720720] [2024-06-27 23:24:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:48,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:49,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:49,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059720720] [2024-06-27 23:24:49,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059720720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:49,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:49,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:49,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869617120] [2024-06-27 23:24:49,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:49,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:49,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:49,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:49,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:49,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:49,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 277 transitions, 2705 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) [2024-06-27 23:24:49,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:49,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:49,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:50,295 INFO L124 PetriNetUnfolderBase]: 718/1344 cut-off events. [2024-06-27 23:24:50,295 INFO L125 PetriNetUnfolderBase]: For 299883/299883 co-relation queries the response was YES. [2024-06-27 23:24:50,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11447 conditions, 1344 events. 718/1344 cut-off events. For 299883/299883 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7614 event pairs, 225 based on Foata normal form. 8/1350 useless extension candidates. Maximal degree in co-relation 11292. Up to 1122 conditions per place. [2024-06-27 23:24:50,309 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 241 selfloop transitions, 48 changer transitions 7/298 dead transitions. [2024-06-27 23:24:50,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 298 transitions, 3711 flow [2024-06-27 23:24:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:24:50,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:24:50,310 INFO L175 Difference]: Start difference. First operand has 335 places, 277 transitions, 2705 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:24:50,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 298 transitions, 3711 flow [2024-06-27 23:24:51,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 298 transitions, 3599 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:51,248 INFO L231 Difference]: Finished difference. Result has 332 places, 275 transitions, 2676 flow [2024-06-27 23:24:51,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2676, PETRI_PLACES=332, PETRI_TRANSITIONS=275} [2024-06-27 23:24:51,253 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 303 predicate places. [2024-06-27 23:24:51,253 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 275 transitions, 2676 flow [2024-06-27 23:24:51,253 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) [2024-06-27 23:24:51,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:51,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:51,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 23:24:51,254 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)] === [2024-06-27 23:24:51,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1479232987, now seen corresponding path program 13 times [2024-06-27 23:24:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:51,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571439192] [2024-06-27 23:24:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:53,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:53,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571439192] [2024-06-27 23:24:53,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571439192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:53,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:53,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:53,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107352979] [2024-06-27 23:24:53,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:53,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:53,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:53,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:53,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:53,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 275 transitions, 2676 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) [2024-06-27 23:24:53,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:53,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:53,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:53,923 INFO L124 PetriNetUnfolderBase]: 687/1283 cut-off events. [2024-06-27 23:24:53,923 INFO L125 PetriNetUnfolderBase]: For 250889/250889 co-relation queries the response was YES. [2024-06-27 23:24:53,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 1283 events. 687/1283 cut-off events. For 250889/250889 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7182 event pairs, 213 based on Foata normal form. 10/1291 useless extension candidates. Maximal degree in co-relation 9808. Up to 1131 conditions per place. [2024-06-27 23:24:53,935 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 235 selfloop transitions, 39 changer transitions 15/291 dead transitions. [2024-06-27 23:24:53,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 291 transitions, 3380 flow [2024-06-27 23:24:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 23:24:53,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-27 23:24:53,936 INFO L175 Difference]: Start difference. First operand has 332 places, 275 transitions, 2676 flow. Second operand 12 states and 137 transitions. [2024-06-27 23:24:53,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 291 transitions, 3380 flow [2024-06-27 23:24:54,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 291 transitions, 3283 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:54,730 INFO L231 Difference]: Finished difference. Result has 333 places, 268 transitions, 2595 flow [2024-06-27 23:24:54,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2579, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2595, PETRI_PLACES=333, PETRI_TRANSITIONS=268} [2024-06-27 23:24:54,734 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 304 predicate places. [2024-06-27 23:24:54,734 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 268 transitions, 2595 flow [2024-06-27 23:24:54,735 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) [2024-06-27 23:24:54,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:54,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:54,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 23:24:54,735 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)] === [2024-06-27 23:24:54,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1483696987, now seen corresponding path program 14 times [2024-06-27 23:24:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:54,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042218474] [2024-06-27 23:24:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:54,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:56,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:56,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042218474] [2024-06-27 23:24:56,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042218474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:56,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:56,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:56,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071481539] [2024-06-27 23:24:56,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:56,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:56,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:56,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:56,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:56,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:56,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 268 transitions, 2595 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) [2024-06-27 23:24:56,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:56,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:56,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:57,076 INFO L124 PetriNetUnfolderBase]: 702/1316 cut-off events. [2024-06-27 23:24:57,077 INFO L125 PetriNetUnfolderBase]: For 299650/299650 co-relation queries the response was YES. [2024-06-27 23:24:57,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11270 conditions, 1316 events. 702/1316 cut-off events. For 299650/299650 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7416 event pairs, 221 based on Foata normal form. 8/1322 useless extension candidates. Maximal degree in co-relation 11116. Up to 1115 conditions per place. [2024-06-27 23:24:57,093 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 241 selfloop transitions, 39 changer transitions 7/289 dead transitions. [2024-06-27 23:24:57,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 289 transitions, 3583 flow [2024-06-27 23:24:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 23:24:57,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-27 23:24:57,095 INFO L175 Difference]: Start difference. First operand has 333 places, 268 transitions, 2595 flow. Second operand 12 states and 142 transitions. [2024-06-27 23:24:57,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 289 transitions, 3583 flow [2024-06-27 23:24:58,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 289 transitions, 3491 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:58,031 INFO L231 Difference]: Finished difference. Result has 327 places, 266 transitions, 2566 flow [2024-06-27 23:24:58,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2566, PETRI_PLACES=327, PETRI_TRANSITIONS=266} [2024-06-27 23:24:58,031 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 298 predicate places. [2024-06-27 23:24:58,031 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 266 transitions, 2566 flow [2024-06-27 23:24:58,032 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) [2024-06-27 23:24:58,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:58,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:58,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 23:24:58,032 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)] === [2024-06-27 23:24:58,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:58,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1150268951, now seen corresponding path program 15 times [2024-06-27 23:24:58,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:58,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978492024] [2024-06-27 23:24:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:58,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:59,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:59,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978492024] [2024-06-27 23:24:59,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978492024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:59,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:59,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:59,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300376168] [2024-06-27 23:24:59,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:59,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:59,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:24:59,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 266 transitions, 2566 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) [2024-06-27 23:24:59,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:59,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:24:59,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:00,472 INFO L124 PetriNetUnfolderBase]: 671/1255 cut-off events. [2024-06-27 23:25:00,473 INFO L125 PetriNetUnfolderBase]: For 250730/250730 co-relation queries the response was YES. [2024-06-27 23:25:00,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9789 conditions, 1255 events. 671/1255 cut-off events. For 250730/250730 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7010 event pairs, 212 based on Foata normal form. 10/1263 useless extension candidates. Maximal degree in co-relation 9636. Up to 1115 conditions per place. [2024-06-27 23:25:00,488 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 231 selfloop transitions, 35 changer transitions 14/282 dead transitions. [2024-06-27 23:25:00,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 282 transitions, 3252 flow [2024-06-27 23:25:00,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 23:25:00,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:25:00,489 INFO L175 Difference]: Start difference. First operand has 327 places, 266 transitions, 2566 flow. Second operand 11 states and 130 transitions. [2024-06-27 23:25:00,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 282 transitions, 3252 flow [2024-06-27 23:25:01,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 282 transitions, 3165 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:25:01,217 INFO L231 Difference]: Finished difference. Result has 325 places, 260 transitions, 2493 flow [2024-06-27 23:25:01,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2493, PETRI_PLACES=325, PETRI_TRANSITIONS=260} [2024-06-27 23:25:01,217 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 296 predicate places. [2024-06-27 23:25:01,217 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 260 transitions, 2493 flow [2024-06-27 23:25:01,218 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) [2024-06-27 23:25:01,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:01,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:01,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 23:25:01,218 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)] === [2024-06-27 23:25:01,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1150089027, now seen corresponding path program 2 times [2024-06-27 23:25:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:01,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696215707] [2024-06-27 23:25:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:01,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:03,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:03,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696215707] [2024-06-27 23:25:03,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696215707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:03,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:03,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:03,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962911066] [2024-06-27 23:25:03,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:03,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:03,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:03,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:03,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:03,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:03,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 260 transitions, 2493 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) [2024-06-27 23:25:03,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:03,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:03,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:03,814 INFO L124 PetriNetUnfolderBase]: 650/1212 cut-off events. [2024-06-27 23:25:03,814 INFO L125 PetriNetUnfolderBase]: For 198228/198228 co-relation queries the response was YES. [2024-06-27 23:25:03,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9438 conditions, 1212 events. 650/1212 cut-off events. For 198228/198228 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6689 event pairs, 195 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 9286. Up to 1040 conditions per place. [2024-06-27 23:25:03,828 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 231 selfloop transitions, 43 changer transitions 0/276 dead transitions. [2024-06-27 23:25:03,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 276 transitions, 3129 flow [2024-06-27 23:25:03,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:03,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:25:03,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:25:03,829 INFO L175 Difference]: Start difference. First operand has 325 places, 260 transitions, 2493 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:25:03,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 276 transitions, 3129 flow [2024-06-27 23:25:04,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 276 transitions, 3036 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:25:04,672 INFO L231 Difference]: Finished difference. Result has 319 places, 261 transitions, 2514 flow [2024-06-27 23:25:04,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2514, PETRI_PLACES=319, PETRI_TRANSITIONS=261} [2024-06-27 23:25:04,673 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 290 predicate places. [2024-06-27 23:25:04,673 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 261 transitions, 2514 flow [2024-06-27 23:25:04,673 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) [2024-06-27 23:25:04,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:04,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:04,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 23:25:04,674 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)] === [2024-06-27 23:25:04,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash -977368497, now seen corresponding path program 3 times [2024-06-27 23:25:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225079792] [2024-06-27 23:25:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:04,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:06,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:06,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225079792] [2024-06-27 23:25:06,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225079792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:06,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:06,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:06,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227897337] [2024-06-27 23:25:06,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:06,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:06,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:06,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:06,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:06,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:06,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 261 transitions, 2514 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) [2024-06-27 23:25:06,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:06,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:06,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:07,545 INFO L124 PetriNetUnfolderBase]: 654/1220 cut-off events. [2024-06-27 23:25:07,546 INFO L125 PetriNetUnfolderBase]: For 195034/195034 co-relation queries the response was YES. [2024-06-27 23:25:07,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9484 conditions, 1220 events. 654/1220 cut-off events. For 195034/195034 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6756 event pairs, 195 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 9334. Up to 1048 conditions per place. [2024-06-27 23:25:07,561 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 228 selfloop transitions, 46 changer transitions 0/276 dead transitions. [2024-06-27 23:25:07,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 276 transitions, 3142 flow [2024-06-27 23:25:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:25:07,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 23:25:07,562 INFO L175 Difference]: Start difference. First operand has 319 places, 261 transitions, 2514 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:25:07,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 276 transitions, 3142 flow [2024-06-27 23:25:08,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 276 transitions, 3028 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 23:25:08,289 INFO L231 Difference]: Finished difference. Result has 320 places, 262 transitions, 2522 flow [2024-06-27 23:25:08,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2522, PETRI_PLACES=320, PETRI_TRANSITIONS=262} [2024-06-27 23:25:08,290 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 291 predicate places. [2024-06-27 23:25:08,290 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 262 transitions, 2522 flow [2024-06-27 23:25:08,290 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) [2024-06-27 23:25:08,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:08,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:08,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 23:25:08,291 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)] === [2024-06-27 23:25:08,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:08,291 INFO L85 PathProgramCache]: Analyzing trace with hash -983855247, now seen corresponding path program 4 times [2024-06-27 23:25:08,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:08,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19415615] [2024-06-27 23:25:08,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:08,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:09,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19415615] [2024-06-27 23:25:09,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19415615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:09,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:09,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:09,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831888602] [2024-06-27 23:25:09,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:09,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:09,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:09,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:10,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:10,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 262 transitions, 2522 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) [2024-06-27 23:25:10,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:10,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:10,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:10,545 INFO L124 PetriNetUnfolderBase]: 658/1228 cut-off events. [2024-06-27 23:25:10,546 INFO L125 PetriNetUnfolderBase]: For 195195/195195 co-relation queries the response was YES. [2024-06-27 23:25:10,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9484 conditions, 1228 events. 658/1228 cut-off events. For 195195/195195 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6814 event pairs, 191 based on Foata normal form. 2/1228 useless extension candidates. Maximal degree in co-relation 9334. Up to 1056 conditions per place. [2024-06-27 23:25:10,559 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 232 selfloop transitions, 44 changer transitions 0/278 dead transitions. [2024-06-27 23:25:10,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 278 transitions, 3166 flow [2024-06-27 23:25:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:10,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:25:10,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 23:25:10,561 INFO L175 Difference]: Start difference. First operand has 320 places, 262 transitions, 2522 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:25:10,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 278 transitions, 3166 flow [2024-06-27 23:25:11,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 278 transitions, 3054 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:25:11,307 INFO L231 Difference]: Finished difference. Result has 322 places, 263 transitions, 2530 flow [2024-06-27 23:25:11,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2530, PETRI_PLACES=322, PETRI_TRANSITIONS=263} [2024-06-27 23:25:11,313 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 293 predicate places. [2024-06-27 23:25:11,313 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 263 transitions, 2530 flow [2024-06-27 23:25:11,313 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) [2024-06-27 23:25:11,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:11,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:11,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 23:25:11,313 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)] === [2024-06-27 23:25:11,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1649930767, now seen corresponding path program 16 times [2024-06-27 23:25:11,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:11,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990170385] [2024-06-27 23:25:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:11,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:12,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:12,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990170385] [2024-06-27 23:25:12,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990170385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:12,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:12,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:12,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535628385] [2024-06-27 23:25:12,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:12,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:12,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:12,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:12,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:13,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:13,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 263 transitions, 2530 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) [2024-06-27 23:25:13,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:13,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:13,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:13,662 INFO L124 PetriNetUnfolderBase]: 670/1256 cut-off events. [2024-06-27 23:25:13,662 INFO L125 PetriNetUnfolderBase]: For 234198/234198 co-relation queries the response was YES. [2024-06-27 23:25:13,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9631 conditions, 1256 events. 670/1256 cut-off events. For 234198/234198 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7051 event pairs, 204 based on Foata normal form. 8/1262 useless extension candidates. Maximal degree in co-relation 9480. Up to 1055 conditions per place. [2024-06-27 23:25:13,676 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 236 selfloop transitions, 39 changer transitions 7/284 dead transitions. [2024-06-27 23:25:13,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 284 transitions, 3496 flow [2024-06-27 23:25:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 23:25:13,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:25:13,677 INFO L175 Difference]: Start difference. First operand has 322 places, 263 transitions, 2530 flow. Second operand 12 states and 140 transitions. [2024-06-27 23:25:13,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 284 transitions, 3496 flow [2024-06-27 23:25:14,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 284 transitions, 3386 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:25:14,349 INFO L231 Difference]: Finished difference. Result has 325 places, 261 transitions, 2482 flow [2024-06-27 23:25:14,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2482, PETRI_PLACES=325, PETRI_TRANSITIONS=261} [2024-06-27 23:25:14,350 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 296 predicate places. [2024-06-27 23:25:14,350 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 261 transitions, 2482 flow [2024-06-27 23:25:14,350 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) [2024-06-27 23:25:14,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:14,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:14,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 23:25:14,350 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)] === [2024-06-27 23:25:14,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:14,351 INFO L85 PathProgramCache]: Analyzing trace with hash -984035171, now seen corresponding path program 17 times [2024-06-27 23:25:14,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:14,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829253267] [2024-06-27 23:25:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:14,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:16,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:16,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829253267] [2024-06-27 23:25:16,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829253267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:16,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:16,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:16,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872827562] [2024-06-27 23:25:16,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:16,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:16,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:16,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:16,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:16,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:16,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 261 transitions, 2482 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) [2024-06-27 23:25:16,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:16,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:16,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:16,725 INFO L124 PetriNetUnfolderBase]: 639/1195 cut-off events. [2024-06-27 23:25:16,725 INFO L125 PetriNetUnfolderBase]: For 188922/188922 co-relation queries the response was YES. [2024-06-27 23:25:16,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8136 conditions, 1195 events. 639/1195 cut-off events. For 188922/188922 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6654 event pairs, 195 based on Foata normal form. 10/1203 useless extension candidates. Maximal degree in co-relation 7984. Up to 1055 conditions per place. [2024-06-27 23:25:16,743 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 226 selfloop transitions, 35 changer transitions 14/277 dead transitions. [2024-06-27 23:25:16,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 277 transitions, 3152 flow [2024-06-27 23:25:16,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:25:16,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 23:25:16,744 INFO L175 Difference]: Start difference. First operand has 325 places, 261 transitions, 2482 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:25:16,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 277 transitions, 3152 flow [2024-06-27 23:25:17,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 277 transitions, 3053 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:25:17,309 INFO L231 Difference]: Finished difference. Result has 323 places, 255 transitions, 2403 flow [2024-06-27 23:25:17,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2403, PETRI_PLACES=323, PETRI_TRANSITIONS=255} [2024-06-27 23:25:17,309 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 294 predicate places. [2024-06-27 23:25:17,310 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 255 transitions, 2403 flow [2024-06-27 23:25:17,310 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) [2024-06-27 23:25:17,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:17,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:17,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 23:25:17,310 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)] === [2024-06-27 23:25:17,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash -977360127, now seen corresponding path program 5 times [2024-06-27 23:25:17,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:17,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133941682] [2024-06-27 23:25:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:17,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:19,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:19,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133941682] [2024-06-27 23:25:19,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133941682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:19,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:19,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:19,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406252902] [2024-06-27 23:25:19,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:19,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:19,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:19,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:19,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:19,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:19,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 255 transitions, 2403 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) [2024-06-27 23:25:19,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:19,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:19,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:19,577 INFO L124 PetriNetUnfolderBase]: 618/1152 cut-off events. [2024-06-27 23:25:19,577 INFO L125 PetriNetUnfolderBase]: For 139881/139881 co-relation queries the response was YES. [2024-06-27 23:25:19,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7835 conditions, 1152 events. 618/1152 cut-off events. For 139881/139881 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6359 event pairs, 170 based on Foata normal form. 2/1152 useless extension candidates. Maximal degree in co-relation 7684. Up to 948 conditions per place. [2024-06-27 23:25:19,590 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 219 selfloop transitions, 49 changer transitions 0/270 dead transitions. [2024-06-27 23:25:19,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 270 transitions, 3015 flow [2024-06-27 23:25:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:25:19,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:25:19,591 INFO L175 Difference]: Start difference. First operand has 323 places, 255 transitions, 2403 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:25:19,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 270 transitions, 3015 flow [2024-06-27 23:25:20,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 270 transitions, 2912 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 23:25:20,082 INFO L231 Difference]: Finished difference. Result has 317 places, 256 transitions, 2432 flow [2024-06-27 23:25:20,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2300, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2432, PETRI_PLACES=317, PETRI_TRANSITIONS=256} [2024-06-27 23:25:20,083 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 288 predicate places. [2024-06-27 23:25:20,083 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 256 transitions, 2432 flow [2024-06-27 23:25:20,083 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) [2024-06-27 23:25:20,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:20,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:20,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 23:25:20,084 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)] === [2024-06-27 23:25:20,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:20,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1484681143, now seen corresponding path program 6 times [2024-06-27 23:25:20,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:20,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707912521] [2024-06-27 23:25:20,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:20,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:21,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:21,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707912521] [2024-06-27 23:25:21,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707912521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:21,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:21,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:21,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342325188] [2024-06-27 23:25:21,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:21,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:21,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:21,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:21,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:21,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:21,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 256 transitions, 2432 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) [2024-06-27 23:25:21,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:21,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:21,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:22,339 INFO L124 PetriNetUnfolderBase]: 622/1160 cut-off events. [2024-06-27 23:25:22,339 INFO L125 PetriNetUnfolderBase]: For 139199/139199 co-relation queries the response was YES. [2024-06-27 23:25:22,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7916 conditions, 1160 events. 622/1160 cut-off events. For 139199/139199 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6434 event pairs, 178 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 7766. Up to 1092 conditions per place. [2024-06-27 23:25:22,350 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 243 selfloop transitions, 24 changer transitions 0/269 dead transitions. [2024-06-27 23:25:22,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 269 transitions, 3038 flow [2024-06-27 23:25:22,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:25:22,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 23:25:22,351 INFO L175 Difference]: Start difference. First operand has 317 places, 256 transitions, 2432 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:25:22,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 269 transitions, 3038 flow [2024-06-27 23:25:22,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 269 transitions, 2900 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-27 23:25:22,846 INFO L231 Difference]: Finished difference. Result has 316 places, 257 transitions, 2378 flow [2024-06-27 23:25:22,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2378, PETRI_PLACES=316, PETRI_TRANSITIONS=257} [2024-06-27 23:25:22,846 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 287 predicate places. [2024-06-27 23:25:22,846 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 257 transitions, 2378 flow [2024-06-27 23:25:22,847 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) [2024-06-27 23:25:22,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:22,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:22,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 23:25:22,847 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)] === [2024-06-27 23:25:22,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:22,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1014953293, now seen corresponding path program 7 times [2024-06-27 23:25:22,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:22,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826948252] [2024-06-27 23:25:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:22,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:24,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:24,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826948252] [2024-06-27 23:25:24,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826948252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:24,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:24,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:24,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542558192] [2024-06-27 23:25:24,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:24,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:24,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:24,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 257 transitions, 2378 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) [2024-06-27 23:25:24,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:24,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:24,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:24,708 INFO L124 PetriNetUnfolderBase]: 626/1168 cut-off events. [2024-06-27 23:25:24,708 INFO L125 PetriNetUnfolderBase]: For 138014/138014 co-relation queries the response was YES. [2024-06-27 23:25:24,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7827 conditions, 1168 events. 626/1168 cut-off events. For 138014/138014 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6494 event pairs, 185 based on Foata normal form. 2/1168 useless extension candidates. Maximal degree in co-relation 7678. Up to 1121 conditions per place. [2024-06-27 23:25:24,720 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 252 selfloop transitions, 16 changer transitions 0/270 dead transitions. [2024-06-27 23:25:24,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 270 transitions, 2972 flow [2024-06-27 23:25:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 23:25:24,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-27 23:25:24,722 INFO L175 Difference]: Start difference. First operand has 316 places, 257 transitions, 2378 flow. Second operand 11 states and 111 transitions. [2024-06-27 23:25:24,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 270 transitions, 2972 flow [2024-06-27 23:25:25,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 270 transitions, 2898 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:25:25,159 INFO L231 Difference]: Finished difference. Result has 319 places, 258 transitions, 2374 flow [2024-06-27 23:25:25,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2374, PETRI_PLACES=319, PETRI_TRANSITIONS=258} [2024-06-27 23:25:25,159 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 290 predicate places. [2024-06-27 23:25:25,159 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 258 transitions, 2374 flow [2024-06-27 23:25:25,159 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) [2024-06-27 23:25:25,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:25,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:25,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 23:25:25,160 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)] === [2024-06-27 23:25:25,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:25,160 INFO L85 PathProgramCache]: Analyzing trace with hash -678248831, now seen corresponding path program 8 times [2024-06-27 23:25:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:25,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794022449] [2024-06-27 23:25:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:25,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:26,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794022449] [2024-06-27 23:25:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794022449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:26,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:26,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632849475] [2024-06-27 23:25:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:27,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:27,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 258 transitions, 2374 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) [2024-06-27 23:25:27,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:27,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:27,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:27,548 INFO L124 PetriNetUnfolderBase]: 630/1176 cut-off events. [2024-06-27 23:25:27,549 INFO L125 PetriNetUnfolderBase]: For 140630/140630 co-relation queries the response was YES. [2024-06-27 23:25:27,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7866 conditions, 1176 events. 630/1176 cut-off events. For 140630/140630 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6573 event pairs, 183 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 7716. Up to 1108 conditions per place. [2024-06-27 23:25:27,558 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 244 selfloop transitions, 26 changer transitions 0/272 dead transitions. [2024-06-27 23:25:27,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 272 transitions, 3000 flow [2024-06-27 23:25:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:25:27,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-27 23:25:27,559 INFO L175 Difference]: Start difference. First operand has 319 places, 258 transitions, 2374 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:25:27,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 272 transitions, 3000 flow [2024-06-27 23:25:28,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 272 transitions, 2940 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 23:25:28,033 INFO L231 Difference]: Finished difference. Result has 320 places, 259 transitions, 2406 flow [2024-06-27 23:25:28,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2406, PETRI_PLACES=320, PETRI_TRANSITIONS=259} [2024-06-27 23:25:28,033 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 291 predicate places. [2024-06-27 23:25:28,033 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 259 transitions, 2406 flow [2024-06-27 23:25:28,033 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) [2024-06-27 23:25:28,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:28,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:28,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 23:25:28,034 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)] === [2024-06-27 23:25:28,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:28,034 INFO L85 PathProgramCache]: Analyzing trace with hash -647921885, now seen corresponding path program 9 times [2024-06-27 23:25:28,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:28,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601192573] [2024-06-27 23:25:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:29,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:29,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601192573] [2024-06-27 23:25:29,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601192573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:29,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:29,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:29,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463405286] [2024-06-27 23:25:29,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:29,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:29,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:29,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:29,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:29,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:29,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 259 transitions, 2406 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) [2024-06-27 23:25:29,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:29,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:29,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:30,303 INFO L124 PetriNetUnfolderBase]: 634/1184 cut-off events. [2024-06-27 23:25:30,303 INFO L125 PetriNetUnfolderBase]: For 143300/143300 co-relation queries the response was YES. [2024-06-27 23:25:30,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 1184 events. 634/1184 cut-off events. For 143300/143300 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6643 event pairs, 179 based on Foata normal form. 2/1184 useless extension candidates. Maximal degree in co-relation 7796. Up to 1075 conditions per place. [2024-06-27 23:25:30,316 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 237 selfloop transitions, 35 changer transitions 0/274 dead transitions. [2024-06-27 23:25:30,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 274 transitions, 3048 flow [2024-06-27 23:25:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:25:30,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:25:30,317 INFO L175 Difference]: Start difference. First operand has 320 places, 259 transitions, 2406 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:25:30,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 274 transitions, 3048 flow [2024-06-27 23:25:30,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 274 transitions, 2966 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:25:30,739 INFO L231 Difference]: Finished difference. Result has 323 places, 260 transitions, 2436 flow [2024-06-27 23:25:30,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2436, PETRI_PLACES=323, PETRI_TRANSITIONS=260} [2024-06-27 23:25:30,739 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 294 predicate places. [2024-06-27 23:25:30,739 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 260 transitions, 2436 flow [2024-06-27 23:25:30,740 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) [2024-06-27 23:25:30,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:30,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:30,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 23:25:30,740 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)] === [2024-06-27 23:25:30,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -678255775, now seen corresponding path program 18 times [2024-06-27 23:25:30,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:30,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472947994] [2024-06-27 23:25:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:30,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:32,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:32,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472947994] [2024-06-27 23:25:32,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472947994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:32,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:32,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:32,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082181465] [2024-06-27 23:25:32,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:32,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:32,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:32,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:32,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:32,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 260 transitions, 2436 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) [2024-06-27 23:25:32,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:32,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:32,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:33,071 INFO L124 PetriNetUnfolderBase]: 650/1220 cut-off events. [2024-06-27 23:25:33,072 INFO L125 PetriNetUnfolderBase]: For 196933/196933 co-relation queries the response was YES. [2024-06-27 23:25:33,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8168 conditions, 1220 events. 650/1220 cut-off events. For 196933/196933 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6864 event pairs, 189 based on Foata normal form. 10/1228 useless extension candidates. Maximal degree in co-relation 8016. Up to 1108 conditions per place. [2024-06-27 23:25:33,086 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 242 selfloop transitions, 24 changer transitions 11/279 dead transitions. [2024-06-27 23:25:33,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 279 transitions, 3140 flow [2024-06-27 23:25:33,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 23:25:33,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 23:25:33,087 INFO L175 Difference]: Start difference. First operand has 323 places, 260 transitions, 2436 flow. Second operand 12 states and 130 transitions. [2024-06-27 23:25:33,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 279 transitions, 3140 flow [2024-06-27 23:25:33,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 279 transitions, 3038 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:25:33,674 INFO L231 Difference]: Finished difference. Result has 326 places, 257 transitions, 2365 flow [2024-06-27 23:25:33,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2365, PETRI_PLACES=326, PETRI_TRANSITIONS=257} [2024-06-27 23:25:33,675 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 297 predicate places. [2024-06-27 23:25:33,675 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 257 transitions, 2365 flow [2024-06-27 23:25:33,675 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) [2024-06-27 23:25:33,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:33,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:33,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 23:25:33,676 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)] === [2024-06-27 23:25:33,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:33,676 INFO L85 PathProgramCache]: Analyzing trace with hash -678428755, now seen corresponding path program 19 times [2024-06-27 23:25:33,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:33,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6785105] [2024-06-27 23:25:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:33,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6785105] [2024-06-27 23:25:35,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6785105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:35,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:35,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:35,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654157806] [2024-06-27 23:25:35,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:35,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:35,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:35,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:35,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:35,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 257 transitions, 2365 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) [2024-06-27 23:25:35,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:35,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:35,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:36,198 INFO L124 PetriNetUnfolderBase]: 640/1206 cut-off events. [2024-06-27 23:25:36,198 INFO L125 PetriNetUnfolderBase]: For 199742/199742 co-relation queries the response was YES. [2024-06-27 23:25:36,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8025 conditions, 1206 events. 640/1206 cut-off events. For 199742/199742 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6779 event pairs, 191 based on Foata normal form. 10/1214 useless extension candidates. Maximal degree in co-relation 7872. Up to 1108 conditions per place. [2024-06-27 23:25:36,208 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 235 selfloop transitions, 26 changer transitions 11/274 dead transitions. [2024-06-27 23:25:36,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 274 transitions, 3263 flow [2024-06-27 23:25:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 23:25:36,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:25:36,210 INFO L175 Difference]: Start difference. First operand has 326 places, 257 transitions, 2365 flow. Second operand 12 states and 132 transitions. [2024-06-27 23:25:36,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 274 transitions, 3263 flow [2024-06-27 23:25:36,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 274 transitions, 3195 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 23:25:36,805 INFO L231 Difference]: Finished difference. Result has 324 places, 254 transitions, 2340 flow [2024-06-27 23:25:36,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2340, PETRI_PLACES=324, PETRI_TRANSITIONS=254} [2024-06-27 23:25:36,806 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 295 predicate places. [2024-06-27 23:25:36,806 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 254 transitions, 2340 flow [2024-06-27 23:25:36,806 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) [2024-06-27 23:25:36,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:36,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:36,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 23:25:36,806 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)] === [2024-06-27 23:25:36,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash -648101809, now seen corresponding path program 20 times [2024-06-27 23:25:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:36,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130525144] [2024-06-27 23:25:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:38,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:38,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130525144] [2024-06-27 23:25:38,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130525144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:38,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:38,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:38,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925857694] [2024-06-27 23:25:38,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:38,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:38,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:38,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:38,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:38,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:38,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 254 transitions, 2340 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) [2024-06-27 23:25:38,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:38,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:38,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:38,995 INFO L124 PetriNetUnfolderBase]: 632/1194 cut-off events. [2024-06-27 23:25:38,996 INFO L125 PetriNetUnfolderBase]: For 196197/196197 co-relation queries the response was YES. [2024-06-27 23:25:39,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7914 conditions, 1194 events. 632/1194 cut-off events. For 196197/196197 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6718 event pairs, 191 based on Foata normal form. 10/1202 useless extension candidates. Maximal degree in co-relation 7762. Up to 1085 conditions per place. [2024-06-27 23:25:39,010 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 228 selfloop transitions, 29 changer transitions 11/270 dead transitions. [2024-06-27 23:25:39,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 270 transitions, 2992 flow [2024-06-27 23:25:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:39,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:25:39,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:25:39,011 INFO L175 Difference]: Start difference. First operand has 324 places, 254 transitions, 2340 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:25:39,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 270 transitions, 2992 flow [2024-06-27 23:25:39,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 270 transitions, 2936 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:25:39,603 INFO L231 Difference]: Finished difference. Result has 321 places, 251 transitions, 2326 flow [2024-06-27 23:25:39,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2326, PETRI_PLACES=321, PETRI_TRANSITIONS=251} [2024-06-27 23:25:39,604 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 292 predicate places. [2024-06-27 23:25:39,604 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 251 transitions, 2326 flow [2024-06-27 23:25:39,604 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) [2024-06-27 23:25:39,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:39,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:39,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 23:25:39,605 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)] === [2024-06-27 23:25:39,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:39,605 INFO L85 PathProgramCache]: Analyzing trace with hash -648106459, now seen corresponding path program 21 times [2024-06-27 23:25:39,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:39,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640055774] [2024-06-27 23:25:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:39,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:41,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:41,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640055774] [2024-06-27 23:25:41,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640055774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:41,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:41,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:25:41,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931110302] [2024-06-27 23:25:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:41,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:25:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:41,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:25:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:25:41,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:41,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 251 transitions, 2326 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) [2024-06-27 23:25:41,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:41,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:41,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:42,041 INFO L124 PetriNetUnfolderBase]: 620/1174 cut-off events. [2024-06-27 23:25:42,042 INFO L125 PetriNetUnfolderBase]: For 179324/179324 co-relation queries the response was YES. [2024-06-27 23:25:42,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7767 conditions, 1174 events. 620/1174 cut-off events. For 179324/179324 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6606 event pairs, 189 based on Foata normal form. 8/1180 useless extension candidates. Maximal degree in co-relation 7616. Up to 1075 conditions per place. [2024-06-27 23:25:42,055 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 226 selfloop transitions, 27 changer transitions 11/266 dead transitions. [2024-06-27 23:25:42,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 266 transitions, 2930 flow [2024-06-27 23:25:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 23:25:42,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 23:25:42,056 INFO L175 Difference]: Start difference. First operand has 321 places, 251 transitions, 2326 flow. Second operand 12 states and 129 transitions. [2024-06-27 23:25:42,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 266 transitions, 2930 flow [2024-06-27 23:25:42,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 266 transitions, 2862 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 23:25:42,579 INFO L231 Difference]: Finished difference. Result has 320 places, 248 transitions, 2294 flow [2024-06-27 23:25:42,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2294, PETRI_PLACES=320, PETRI_TRANSITIONS=248} [2024-06-27 23:25:42,579 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 291 predicate places. [2024-06-27 23:25:42,579 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 248 transitions, 2294 flow [2024-06-27 23:25:42,579 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) [2024-06-27 23:25:42,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:42,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:42,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 23:25:42,580 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)] === [2024-06-27 23:25:42,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash -671753711, now seen corresponding path program 10 times [2024-06-27 23:25:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641281987] [2024-06-27 23:25:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:44,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:44,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641281987] [2024-06-27 23:25:44,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641281987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:44,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:44,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:44,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873869450] [2024-06-27 23:25:44,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:44,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:44,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:44,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:44,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:44,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:44,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 248 transitions, 2294 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) [2024-06-27 23:25:44,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:44,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:44,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:45,046 INFO L124 PetriNetUnfolderBase]: 605/1141 cut-off events. [2024-06-27 23:25:45,046 INFO L125 PetriNetUnfolderBase]: For 140361/140361 co-relation queries the response was YES. [2024-06-27 23:25:45,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7610 conditions, 1141 events. 605/1141 cut-off events. For 140361/140361 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6391 event pairs, 185 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 7460. Up to 1053 conditions per place. [2024-06-27 23:25:45,056 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 234 selfloop transitions, 25 changer transitions 0/261 dead transitions. [2024-06-27 23:25:45,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 261 transitions, 2884 flow [2024-06-27 23:25:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:25:45,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 23:25:45,057 INFO L175 Difference]: Start difference. First operand has 320 places, 248 transitions, 2294 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:25:45,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 261 transitions, 2884 flow [2024-06-27 23:25:45,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 261 transitions, 2820 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 23:25:45,566 INFO L231 Difference]: Finished difference. Result has 314 places, 249 transitions, 2324 flow [2024-06-27 23:25:45,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2230, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2324, PETRI_PLACES=314, PETRI_TRANSITIONS=249} [2024-06-27 23:25:45,567 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 285 predicate places. [2024-06-27 23:25:45,567 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 249 transitions, 2324 flow [2024-06-27 23:25:45,567 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) [2024-06-27 23:25:45,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:45,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:45,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 23:25:45,567 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)] === [2024-06-27 23:25:45,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:45,568 INFO L85 PathProgramCache]: Analyzing trace with hash -678433405, now seen corresponding path program 22 times [2024-06-27 23:25:45,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:45,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371981343] [2024-06-27 23:25:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:45,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:47,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:47,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371981343] [2024-06-27 23:25:47,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371981343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:47,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:47,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:47,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761452332] [2024-06-27 23:25:47,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:47,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:47,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:47,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:47,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:47,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 249 transitions, 2324 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) [2024-06-27 23:25:47,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:47,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:47,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:47,840 INFO L124 PetriNetUnfolderBase]: 617/1169 cut-off events. [2024-06-27 23:25:47,841 INFO L125 PetriNetUnfolderBase]: For 171321/171321 co-relation queries the response was YES. [2024-06-27 23:25:47,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 1169 events. 617/1169 cut-off events. For 171321/171321 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6571 event pairs, 189 based on Foata normal form. 8/1175 useless extension candidates. Maximal degree in co-relation 7564. Up to 1094 conditions per place. [2024-06-27 23:25:47,852 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 234 selfloop transitions, 17 changer transitions 11/264 dead transitions. [2024-06-27 23:25:47,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 264 transitions, 2922 flow [2024-06-27 23:25:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-27 23:25:47,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-27 23:25:47,853 INFO L175 Difference]: Start difference. First operand has 314 places, 249 transitions, 2324 flow. Second operand 12 states and 124 transitions. [2024-06-27 23:25:47,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 264 transitions, 2922 flow [2024-06-27 23:25:48,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 264 transitions, 2838 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:25:48,295 INFO L231 Difference]: Finished difference. Result has 318 places, 246 transitions, 2248 flow [2024-06-27 23:25:48,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2248, PETRI_PLACES=318, PETRI_TRANSITIONS=246} [2024-06-27 23:25:48,296 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 289 predicate places. [2024-06-27 23:25:48,296 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 246 transitions, 2248 flow [2024-06-27 23:25:48,296 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) [2024-06-27 23:25:48,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:48,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:48,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 23:25:48,296 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)] === [2024-06-27 23:25:48,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:48,297 INFO L85 PathProgramCache]: Analyzing trace with hash -647928829, now seen corresponding path program 23 times [2024-06-27 23:25:48,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:48,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310351849] [2024-06-27 23:25:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:48,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:49,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310351849] [2024-06-27 23:25:49,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310351849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:49,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671283477] [2024-06-27 23:25:49,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:49,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:49,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:49,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:49,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:50,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:50,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 246 transitions, 2248 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) [2024-06-27 23:25:50,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:50,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:50,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:50,573 INFO L124 PetriNetUnfolderBase]: 614/1164 cut-off events. [2024-06-27 23:25:50,573 INFO L125 PetriNetUnfolderBase]: For 186296/186296 co-relation queries the response was YES. [2024-06-27 23:25:50,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7653 conditions, 1164 events. 614/1164 cut-off events. For 186296/186296 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6554 event pairs, 180 based on Foata normal form. 10/1172 useless extension candidates. Maximal degree in co-relation 7504. Up to 1011 conditions per place. [2024-06-27 23:25:50,585 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 223 selfloop transitions, 30 changer transitions 11/266 dead transitions. [2024-06-27 23:25:50,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 266 transitions, 2926 flow [2024-06-27 23:25:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:25:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:25:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 23:25:50,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-27 23:25:50,586 INFO L175 Difference]: Start difference. First operand has 318 places, 246 transitions, 2248 flow. Second operand 12 states and 136 transitions. [2024-06-27 23:25:50,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 266 transitions, 2926 flow [2024-06-27 23:25:51,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 266 transitions, 2866 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 23:25:51,049 INFO L231 Difference]: Finished difference. Result has 313 places, 243 transitions, 2231 flow [2024-06-27 23:25:51,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2231, PETRI_PLACES=313, PETRI_TRANSITIONS=243} [2024-06-27 23:25:51,050 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 284 predicate places. [2024-06-27 23:25:51,050 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 243 transitions, 2231 flow [2024-06-27 23:25:51,050 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) [2024-06-27 23:25:51,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:51,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:51,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 23:25:51,051 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)] === [2024-06-27 23:25:51,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:51,051 INFO L85 PathProgramCache]: Analyzing trace with hash -442065101, now seen corresponding path program 11 times [2024-06-27 23:25:51,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:51,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449646753] [2024-06-27 23:25:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:51,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:52,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:52,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449646753] [2024-06-27 23:25:52,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449646753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:52,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:52,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346258413] [2024-06-27 23:25:52,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:52,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:52,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:52,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:52,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:52,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:52,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 243 transitions, 2231 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) [2024-06-27 23:25:52,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:52,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:52,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:53,024 INFO L124 PetriNetUnfolderBase]: 599/1135 cut-off events. [2024-06-27 23:25:53,025 INFO L125 PetriNetUnfolderBase]: For 146412/146412 co-relation queries the response was YES. [2024-06-27 23:25:53,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7786 conditions, 1135 events. 599/1135 cut-off events. For 146412/146412 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6362 event pairs, 188 based on Foata normal form. 2/1135 useless extension candidates. Maximal degree in co-relation 7640. Up to 1063 conditions per place. [2024-06-27 23:25:53,036 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 233 selfloop transitions, 22 changer transitions 0/257 dead transitions. [2024-06-27 23:25:53,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 257 transitions, 3067 flow [2024-06-27 23:25:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 23:25:53,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-27 23:25:53,038 INFO L175 Difference]: Start difference. First operand has 313 places, 243 transitions, 2231 flow. Second operand 11 states and 116 transitions. [2024-06-27 23:25:53,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 257 transitions, 3067 flow [2024-06-27 23:25:53,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 257 transitions, 2995 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:25:53,535 INFO L231 Difference]: Finished difference. Result has 310 places, 245 transitions, 2293 flow [2024-06-27 23:25:53,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2293, PETRI_PLACES=310, PETRI_TRANSITIONS=245} [2024-06-27 23:25:53,535 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 281 predicate places. [2024-06-27 23:25:53,535 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 245 transitions, 2293 flow [2024-06-27 23:25:53,535 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) [2024-06-27 23:25:53,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:53,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:53,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 23:25:53,536 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)] === [2024-06-27 23:25:53,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:53,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1337630793, now seen corresponding path program 24 times [2024-06-27 23:25:53,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:53,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650236626] [2024-06-27 23:25:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:53,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:55,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:55,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650236626] [2024-06-27 23:25:55,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650236626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:55,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:55,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:55,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650059952] [2024-06-27 23:25:55,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:55,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:55,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:55,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:55,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 245 transitions, 2293 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) [2024-06-27 23:25:55,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:55,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:55,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:55,779 INFO L124 PetriNetUnfolderBase]: 615/1171 cut-off events. [2024-06-27 23:25:55,780 INFO L125 PetriNetUnfolderBase]: For 189776/189776 co-relation queries the response was YES. [2024-06-27 23:25:55,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7933 conditions, 1171 events. 615/1171 cut-off events. For 189776/189776 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6616 event pairs, 185 based on Foata normal form. 10/1179 useless extension candidates. Maximal degree in co-relation 7788. Up to 1059 conditions per place. [2024-06-27 23:25:55,788 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 230 selfloop transitions, 20 changer transitions 11/263 dead transitions. [2024-06-27 23:25:55,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 263 transitions, 2941 flow [2024-06-27 23:25:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:25:55,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 23:25:55,789 INFO L175 Difference]: Start difference. First operand has 310 places, 245 transitions, 2293 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:25:55,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 263 transitions, 2941 flow [2024-06-27 23:25:56,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 263 transitions, 2871 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:56,321 INFO L231 Difference]: Finished difference. Result has 314 places, 242 transitions, 2245 flow [2024-06-27 23:25:56,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2223, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2245, PETRI_PLACES=314, PETRI_TRANSITIONS=242} [2024-06-27 23:25:56,321 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 285 predicate places. [2024-06-27 23:25:56,321 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 242 transitions, 2245 flow [2024-06-27 23:25:56,322 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) [2024-06-27 23:25:56,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:56,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:56,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 23:25:56,322 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)] === [2024-06-27 23:25:56,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:56,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1297133679, now seen corresponding path program 12 times [2024-06-27 23:25:56,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:56,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953751182] [2024-06-27 23:25:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:56,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:57,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:57,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953751182] [2024-06-27 23:25:57,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953751182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:57,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:57,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:57,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700140314] [2024-06-27 23:25:57,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:57,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:57,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:57,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:57,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:57,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:25:57,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 242 transitions, 2245 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) [2024-06-27 23:25:57,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:57,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:25:57,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:58,267 INFO L124 PetriNetUnfolderBase]: 593/1129 cut-off events. [2024-06-27 23:25:58,267 INFO L125 PetriNetUnfolderBase]: For 146478/146478 co-relation queries the response was YES. [2024-06-27 23:25:58,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7708 conditions, 1129 events. 593/1129 cut-off events. For 146478/146478 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6343 event pairs, 188 based on Foata normal form. 2/1129 useless extension candidates. Maximal degree in co-relation 7561. Up to 1087 conditions per place. [2024-06-27 23:25:58,278 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 233 selfloop transitions, 18 changer transitions 0/253 dead transitions. [2024-06-27 23:25:58,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 253 transitions, 2805 flow [2024-06-27 23:25:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 23:25:58,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 23:25:58,279 INFO L175 Difference]: Start difference. First operand has 314 places, 242 transitions, 2245 flow. Second operand 10 states and 107 transitions. [2024-06-27 23:25:58,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 253 transitions, 2805 flow [2024-06-27 23:25:58,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 253 transitions, 2757 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:25:58,698 INFO L231 Difference]: Finished difference. Result has 311 places, 243 transitions, 2275 flow [2024-06-27 23:25:58,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2275, PETRI_PLACES=311, PETRI_TRANSITIONS=243} [2024-06-27 23:25:58,699 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 282 predicate places. [2024-06-27 23:25:58,699 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 243 transitions, 2275 flow [2024-06-27 23:25:58,699 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) [2024-06-27 23:25:58,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:58,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:58,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 23:25:58,699 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)] === [2024-06-27 23:25:58,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:58,700 INFO L85 PathProgramCache]: Analyzing trace with hash -379286037, now seen corresponding path program 13 times [2024-06-27 23:25:58,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:58,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305892607] [2024-06-27 23:25:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:58,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:00,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:00,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305892607] [2024-06-27 23:26:00,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305892607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:00,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:00,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:00,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499075994] [2024-06-27 23:26:00,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:00,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:00,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:00,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:00,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:00,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:00,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 243 transitions, 2275 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) [2024-06-27 23:26:00,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:00,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:00,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:01,185 INFO L124 PetriNetUnfolderBase]: 597/1137 cut-off events. [2024-06-27 23:26:01,185 INFO L125 PetriNetUnfolderBase]: For 144025/144025 co-relation queries the response was YES. [2024-06-27 23:26:01,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7763 conditions, 1137 events. 597/1137 cut-off events. For 144025/144025 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6427 event pairs, 179 based on Foata normal form. 2/1137 useless extension candidates. Maximal degree in co-relation 7617. Up to 1028 conditions per place. [2024-06-27 23:26:01,197 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 224 selfloop transitions, 31 changer transitions 0/257 dead transitions. [2024-06-27 23:26:01,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 257 transitions, 2879 flow [2024-06-27 23:26:01,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:26:01,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:26:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:26:01,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:26:01,198 INFO L175 Difference]: Start difference. First operand has 311 places, 243 transitions, 2275 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:26:01,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 257 transitions, 2879 flow [2024-06-27 23:26:01,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 257 transitions, 2804 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:26:01,633 INFO L231 Difference]: Finished difference. Result has 313 places, 244 transitions, 2310 flow [2024-06-27 23:26:01,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2310, PETRI_PLACES=313, PETRI_TRANSITIONS=244} [2024-06-27 23:26:01,634 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 284 predicate places. [2024-06-27 23:26:01,634 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 244 transitions, 2310 flow [2024-06-27 23:26:01,634 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) [2024-06-27 23:26:01,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:01,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:01,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 23:26:01,635 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)] === [2024-06-27 23:26:01,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash -187968191, now seen corresponding path program 1 times [2024-06-27 23:26:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:01,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095657314] [2024-06-27 23:26:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:03,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095657314] [2024-06-27 23:26:03,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095657314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:03,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:03,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:03,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445331195] [2024-06-27 23:26:03,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:03,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:03,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:03,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:03,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:03,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:03,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 244 transitions, 2310 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) [2024-06-27 23:26:03,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:03,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:03,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:04,288 INFO L124 PetriNetUnfolderBase]: 593/1131 cut-off events. [2024-06-27 23:26:04,288 INFO L125 PetriNetUnfolderBase]: For 134190/134190 co-relation queries the response was YES. [2024-06-27 23:26:04,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7487 conditions, 1131 events. 593/1131 cut-off events. For 134190/134190 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6372 event pairs, 182 based on Foata normal form. 2/1131 useless extension candidates. Maximal degree in co-relation 7339. Up to 1080 conditions per place. [2024-06-27 23:26:04,300 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 227 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-27 23:26:04,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 255 transitions, 2892 flow [2024-06-27 23:26:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:04,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 23:26:04,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-27 23:26:04,301 INFO L175 Difference]: Start difference. First operand has 313 places, 244 transitions, 2310 flow. Second operand 11 states and 114 transitions. [2024-06-27 23:26:04,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 255 transitions, 2892 flow [2024-06-27 23:26:04,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 255 transitions, 2772 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 23:26:04,750 INFO L231 Difference]: Finished difference. Result has 316 places, 246 transitions, 2310 flow [2024-06-27 23:26:04,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2310, PETRI_PLACES=316, PETRI_TRANSITIONS=246} [2024-06-27 23:26:04,751 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 287 predicate places. [2024-06-27 23:26:04,751 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 246 transitions, 2310 flow [2024-06-27 23:26:04,751 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) [2024-06-27 23:26:04,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:04,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:04,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 23:26:04,751 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)] === [2024-06-27 23:26:04,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:04,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1025080993, now seen corresponding path program 14 times [2024-06-27 23:26:04,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:04,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517830943] [2024-06-27 23:26:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:04,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517830943] [2024-06-27 23:26:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517830943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:06,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:06,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428515613] [2024-06-27 23:26:06,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:06,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:06,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:06,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:06,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:06,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 246 transitions, 2310 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) [2024-06-27 23:26:06,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:06,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:06,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:06,680 INFO L124 PetriNetUnfolderBase]: 590/1126 cut-off events. [2024-06-27 23:26:06,680 INFO L125 PetriNetUnfolderBase]: For 123005/123005 co-relation queries the response was YES. [2024-06-27 23:26:06,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7150 conditions, 1126 events. 590/1126 cut-off events. For 123005/123005 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6363 event pairs, 183 based on Foata normal form. 2/1126 useless extension candidates. Maximal degree in co-relation 7001. Up to 1069 conditions per place. [2024-06-27 23:26:06,696 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 230 selfloop transitions, 24 changer transitions 0/256 dead transitions. [2024-06-27 23:26:06,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 256 transitions, 2840 flow [2024-06-27 23:26:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:26:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:26:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 23:26:06,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-27 23:26:06,701 INFO L175 Difference]: Start difference. First operand has 316 places, 246 transitions, 2310 flow. Second operand 10 states and 108 transitions. [2024-06-27 23:26:06,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 256 transitions, 2840 flow [2024-06-27 23:26:07,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 256 transitions, 2714 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 23:26:07,155 INFO L231 Difference]: Finished difference. Result has 317 places, 246 transitions, 2238 flow [2024-06-27 23:26:07,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2238, PETRI_PLACES=317, PETRI_TRANSITIONS=246} [2024-06-27 23:26:07,156 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 288 predicate places. [2024-06-27 23:26:07,156 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 246 transitions, 2238 flow [2024-06-27 23:26:07,156 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) [2024-06-27 23:26:07,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:07,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:07,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 23:26:07,156 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)] === [2024-06-27 23:26:07,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:07,157 INFO L85 PathProgramCache]: Analyzing trace with hash -166209399, now seen corresponding path program 15 times [2024-06-27 23:26:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:07,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746944743] [2024-06-27 23:26:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:07,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:09,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:09,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746944743] [2024-06-27 23:26:09,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746944743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:09,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:09,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:09,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336654755] [2024-06-27 23:26:09,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:09,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:09,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:09,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:09,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:09,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 246 transitions, 2238 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) [2024-06-27 23:26:09,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:09,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:09,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:09,679 INFO L124 PetriNetUnfolderBase]: 638/1226 cut-off events. [2024-06-27 23:26:09,680 INFO L125 PetriNetUnfolderBase]: For 234477/234477 co-relation queries the response was YES. [2024-06-27 23:26:09,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9063 conditions, 1226 events. 638/1226 cut-off events. For 234477/234477 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6999 event pairs, 195 based on Foata normal form. 8/1232 useless extension candidates. Maximal degree in co-relation 8913. Up to 963 conditions per place. [2024-06-27 23:26:09,693 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 229 selfloop transitions, 32 changer transitions 7/270 dead transitions. [2024-06-27 23:26:09,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 270 transitions, 3244 flow [2024-06-27 23:26:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:26:09,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:26:09,694 INFO L175 Difference]: Start difference. First operand has 317 places, 246 transitions, 2238 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:26:09,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 270 transitions, 3244 flow [2024-06-27 23:26:10,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 270 transitions, 3189 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:26:10,311 INFO L231 Difference]: Finished difference. Result has 319 places, 244 transitions, 2238 flow [2024-06-27 23:26:10,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2238, PETRI_PLACES=319, PETRI_TRANSITIONS=244} [2024-06-27 23:26:10,312 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 290 predicate places. [2024-06-27 23:26:10,312 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 244 transitions, 2238 flow [2024-06-27 23:26:10,312 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) [2024-06-27 23:26:10,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:10,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:10,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 23:26:10,312 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)] === [2024-06-27 23:26:10,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:10,313 INFO L85 PathProgramCache]: Analyzing trace with hash -379523621, now seen corresponding path program 25 times [2024-06-27 23:26:10,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:10,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454458954] [2024-06-27 23:26:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:10,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:11,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:11,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454458954] [2024-06-27 23:26:11,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454458954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:11,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:11,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:11,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317630747] [2024-06-27 23:26:11,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:11,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:11,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:11,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:11,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:12,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:12,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 244 transitions, 2238 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) [2024-06-27 23:26:12,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:12,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:12,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:12,771 INFO L124 PetriNetUnfolderBase]: 636/1224 cut-off events. [2024-06-27 23:26:12,771 INFO L125 PetriNetUnfolderBase]: For 249775/249775 co-relation queries the response was YES. [2024-06-27 23:26:12,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9056 conditions, 1224 events. 636/1224 cut-off events. For 249775/249775 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6980 event pairs, 205 based on Foata normal form. 10/1232 useless extension candidates. Maximal degree in co-relation 8905. Up to 1071 conditions per place. [2024-06-27 23:26:12,781 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 222 selfloop transitions, 28 changer transitions 11/263 dead transitions. [2024-06-27 23:26:12,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 263 transitions, 2896 flow [2024-06-27 23:26:12,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:12,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 23:26:12,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-27 23:26:12,783 INFO L175 Difference]: Start difference. First operand has 319 places, 244 transitions, 2238 flow. Second operand 12 states and 134 transitions. [2024-06-27 23:26:12,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 263 transitions, 2896 flow [2024-06-27 23:26:13,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 263 transitions, 2835 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:26:13,371 INFO L231 Difference]: Finished difference. Result has 319 places, 241 transitions, 2214 flow [2024-06-27 23:26:13,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2214, PETRI_PLACES=319, PETRI_TRANSITIONS=241} [2024-06-27 23:26:13,371 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 290 predicate places. [2024-06-27 23:26:13,371 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 241 transitions, 2214 flow [2024-06-27 23:26:13,371 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) [2024-06-27 23:26:13,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:13,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:13,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 23:26:13,372 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)] === [2024-06-27 23:26:13,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash -814155665, now seen corresponding path program 16 times [2024-06-27 23:26:13,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:13,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338113296] [2024-06-27 23:26:13,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:15,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:15,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338113296] [2024-06-27 23:26:15,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338113296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:15,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:15,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:15,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568995485] [2024-06-27 23:26:15,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:15,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:15,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:15,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:15,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:15,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 241 transitions, 2214 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) [2024-06-27 23:26:15,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:15,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:15,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:15,602 INFO L124 PetriNetUnfolderBase]: 607/1169 cut-off events. [2024-06-27 23:26:15,602 INFO L125 PetriNetUnfolderBase]: For 184691/184691 co-relation queries the response was YES. [2024-06-27 23:26:15,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8485 conditions, 1169 events. 607/1169 cut-off events. For 184691/184691 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6650 event pairs, 202 based on Foata normal form. 2/1169 useless extension candidates. Maximal degree in co-relation 8335. Up to 1060 conditions per place. [2024-06-27 23:26:15,616 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 221 selfloop transitions, 32 changer transitions 0/255 dead transitions. [2024-06-27 23:26:15,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 255 transitions, 2816 flow [2024-06-27 23:26:15,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:15,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:26:15,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:26:15,618 INFO L175 Difference]: Start difference. First operand has 319 places, 241 transitions, 2214 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:26:15,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 255 transitions, 2816 flow [2024-06-27 23:26:16,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 255 transitions, 2752 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:26:16,223 INFO L231 Difference]: Finished difference. Result has 316 places, 242 transitions, 2264 flow [2024-06-27 23:26:16,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2264, PETRI_PLACES=316, PETRI_TRANSITIONS=242} [2024-06-27 23:26:16,223 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 287 predicate places. [2024-06-27 23:26:16,223 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 242 transitions, 2264 flow [2024-06-27 23:26:16,223 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) [2024-06-27 23:26:16,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:16,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:16,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 23:26:16,224 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)] === [2024-06-27 23:26:16,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash -814340239, now seen corresponding path program 26 times [2024-06-27 23:26:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:16,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362010000] [2024-06-27 23:26:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:16,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:17,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362010000] [2024-06-27 23:26:17,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362010000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:17,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:17,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921941888] [2024-06-27 23:26:17,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:17,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:17,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:17,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:17,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:18,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:18,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 242 transitions, 2264 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) [2024-06-27 23:26:18,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:18,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:18,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:18,631 INFO L124 PetriNetUnfolderBase]: 648/1256 cut-off events. [2024-06-27 23:26:18,631 INFO L125 PetriNetUnfolderBase]: For 276331/276331 co-relation queries the response was YES. [2024-06-27 23:26:18,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9978 conditions, 1256 events. 648/1256 cut-off events. For 276331/276331 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7245 event pairs, 213 based on Foata normal form. 8/1262 useless extension candidates. Maximal degree in co-relation 9829. Up to 1086 conditions per place. [2024-06-27 23:26:18,644 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 223 selfloop transitions, 31 changer transitions 7/263 dead transitions. [2024-06-27 23:26:18,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 263 transitions, 3156 flow [2024-06-27 23:26:18,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 23:26:18,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:26:18,645 INFO L175 Difference]: Start difference. First operand has 316 places, 242 transitions, 2264 flow. Second operand 12 states and 138 transitions. [2024-06-27 23:26:18,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 263 transitions, 3156 flow [2024-06-27 23:26:19,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 263 transitions, 3052 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:26:19,352 INFO L231 Difference]: Finished difference. Result has 319 places, 240 transitions, 2214 flow [2024-06-27 23:26:19,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2214, PETRI_PLACES=319, PETRI_TRANSITIONS=240} [2024-06-27 23:26:19,352 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 290 predicate places. [2024-06-27 23:26:19,352 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 240 transitions, 2214 flow [2024-06-27 23:26:19,352 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) [2024-06-27 23:26:19,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:19,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:19,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 23:26:19,353 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)] === [2024-06-27 23:26:19,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash -818804239, now seen corresponding path program 27 times [2024-06-27 23:26:19,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:19,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734000233] [2024-06-27 23:26:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:19,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:21,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:21,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734000233] [2024-06-27 23:26:21,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734000233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:21,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:21,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:21,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281869386] [2024-06-27 23:26:21,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:21,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:21,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:21,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:21,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:21,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 240 transitions, 2214 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) [2024-06-27 23:26:21,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:21,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:21,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:21,764 INFO L124 PetriNetUnfolderBase]: 646/1254 cut-off events. [2024-06-27 23:26:21,764 INFO L125 PetriNetUnfolderBase]: For 293099/293099 co-relation queries the response was YES. [2024-06-27 23:26:21,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9957 conditions, 1254 events. 646/1254 cut-off events. For 293099/293099 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7255 event pairs, 229 based on Foata normal form. 10/1262 useless extension candidates. Maximal degree in co-relation 9807. Up to 1142 conditions per place. [2024-06-27 23:26:21,774 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 216 selfloop transitions, 28 changer transitions 11/257 dead transitions. [2024-06-27 23:26:21,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 257 transitions, 2836 flow [2024-06-27 23:26:21,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:21,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 23:26:21,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36944444444444446 [2024-06-27 23:26:21,776 INFO L175 Difference]: Start difference. First operand has 319 places, 240 transitions, 2214 flow. Second operand 12 states and 133 transitions. [2024-06-27 23:26:21,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 257 transitions, 2836 flow [2024-06-27 23:26:22,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 257 transitions, 2772 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:26:22,573 INFO L231 Difference]: Finished difference. Result has 318 places, 237 transitions, 2191 flow [2024-06-27 23:26:22,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2191, PETRI_PLACES=318, PETRI_TRANSITIONS=237} [2024-06-27 23:26:22,574 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 289 predicate places. [2024-06-27 23:26:22,574 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 237 transitions, 2191 flow [2024-06-27 23:26:22,574 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) [2024-06-27 23:26:22,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:22,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:22,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 23:26:22,574 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)] === [2024-06-27 23:26:22,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:22,575 INFO L85 PathProgramCache]: Analyzing trace with hash -814335589, now seen corresponding path program 28 times [2024-06-27 23:26:22,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:22,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045134504] [2024-06-27 23:26:22,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:22,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:24,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:24,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045134504] [2024-06-27 23:26:24,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045134504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:24,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:24,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:24,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479764316] [2024-06-27 23:26:24,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:24,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:24,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:24,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:24,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:24,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:24,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 237 transitions, 2191 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) [2024-06-27 23:26:24,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:24,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:24,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:24,904 INFO L124 PetriNetUnfolderBase]: 609/1183 cut-off events. [2024-06-27 23:26:24,905 INFO L125 PetriNetUnfolderBase]: For 228513/228513 co-relation queries the response was YES. [2024-06-27 23:26:24,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 1183 events. 609/1183 cut-off events. For 228513/228513 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6777 event pairs, 208 based on Foata normal form. 10/1191 useless extension candidates. Maximal degree in co-relation 8319. Up to 1074 conditions per place. [2024-06-27 23:26:24,917 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 210 selfloop transitions, 28 changer transitions 13/253 dead transitions. [2024-06-27 23:26:24,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 253 transitions, 2795 flow [2024-06-27 23:26:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:24,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:26:24,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:26:24,918 INFO L175 Difference]: Start difference. First operand has 318 places, 237 transitions, 2191 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:26:24,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 253 transitions, 2795 flow [2024-06-27 23:26:25,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 253 transitions, 2735 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:26:25,398 INFO L231 Difference]: Finished difference. Result has 315 places, 233 transitions, 2159 flow [2024-06-27 23:26:25,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2159, PETRI_PLACES=315, PETRI_TRANSITIONS=233} [2024-06-27 23:26:25,399 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 286 predicate places. [2024-06-27 23:26:25,399 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 233 transitions, 2159 flow [2024-06-27 23:26:25,399 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) [2024-06-27 23:26:25,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:25,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:25,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 23:26:25,400 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)] === [2024-06-27 23:26:25,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash -818808889, now seen corresponding path program 29 times [2024-06-27 23:26:25,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:25,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960487025] [2024-06-27 23:26:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960487025] [2024-06-27 23:26:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960487025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:27,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:27,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:27,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610739006] [2024-06-27 23:26:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:27,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:27,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:27,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:27,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:27,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 233 transitions, 2159 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) [2024-06-27 23:26:27,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:27,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:27,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:27,867 INFO L124 PetriNetUnfolderBase]: 596/1160 cut-off events. [2024-06-27 23:26:27,867 INFO L125 PetriNetUnfolderBase]: For 211732/211732 co-relation queries the response was YES. [2024-06-27 23:26:27,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8299 conditions, 1160 events. 596/1160 cut-off events. For 211732/211732 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6608 event pairs, 202 based on Foata normal form. 8/1166 useless extension candidates. Maximal degree in co-relation 8151. Up to 1067 conditions per place. [2024-06-27 23:26:27,879 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 212 selfloop transitions, 23 changer transitions 11/248 dead transitions. [2024-06-27 23:26:27,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 248 transitions, 2721 flow [2024-06-27 23:26:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 23:26:27,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3527777777777778 [2024-06-27 23:26:27,880 INFO L175 Difference]: Start difference. First operand has 315 places, 233 transitions, 2159 flow. Second operand 12 states and 127 transitions. [2024-06-27 23:26:27,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 248 transitions, 2721 flow [2024-06-27 23:26:28,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 248 transitions, 2659 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:26:28,516 INFO L231 Difference]: Finished difference. Result has 311 places, 230 transitions, 2131 flow [2024-06-27 23:26:28,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2131, PETRI_PLACES=311, PETRI_TRANSITIONS=230} [2024-06-27 23:26:28,516 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 282 predicate places. [2024-06-27 23:26:28,516 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 230 transitions, 2131 flow [2024-06-27 23:26:28,517 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) [2024-06-27 23:26:28,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:28,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:28,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 23:26:28,517 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)] === [2024-06-27 23:26:28,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:28,517 INFO L85 PathProgramCache]: Analyzing trace with hash -814162609, now seen corresponding path program 30 times [2024-06-27 23:26:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:28,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004014275] [2024-06-27 23:26:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:28,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:30,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:30,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004014275] [2024-06-27 23:26:30,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004014275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:30,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:30,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:30,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47051881] [2024-06-27 23:26:30,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:30,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:30,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:30,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:30,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 230 transitions, 2131 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) [2024-06-27 23:26:30,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:30,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:30,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:30,840 INFO L124 PetriNetUnfolderBase]: 579/1129 cut-off events. [2024-06-27 23:26:30,841 INFO L125 PetriNetUnfolderBase]: For 192840/192840 co-relation queries the response was YES. [2024-06-27 23:26:30,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7659 conditions, 1129 events. 579/1129 cut-off events. For 192840/192840 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6401 event pairs, 194 based on Foata normal form. 10/1137 useless extension candidates. Maximal degree in co-relation 7513. Up to 976 conditions per place. [2024-06-27 23:26:30,852 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 207 selfloop transitions, 29 changer transitions 11/249 dead transitions. [2024-06-27 23:26:30,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 249 transitions, 2757 flow [2024-06-27 23:26:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 23:26:30,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:26:30,853 INFO L175 Difference]: Start difference. First operand has 311 places, 230 transitions, 2131 flow. Second operand 12 states and 132 transitions. [2024-06-27 23:26:30,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 249 transitions, 2757 flow [2024-06-27 23:26:31,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 249 transitions, 2705 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:26:31,349 INFO L231 Difference]: Finished difference. Result has 307 places, 227 transitions, 2118 flow [2024-06-27 23:26:31,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2118, PETRI_PLACES=307, PETRI_TRANSITIONS=227} [2024-06-27 23:26:31,350 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 278 predicate places. [2024-06-27 23:26:31,350 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 227 transitions, 2118 flow [2024-06-27 23:26:31,350 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) [2024-06-27 23:26:31,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:31,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:31,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 23:26:31,350 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)] === [2024-06-27 23:26:31,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash -556775111, now seen corresponding path program 31 times [2024-06-27 23:26:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:31,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121080277] [2024-06-27 23:26:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:31,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:33,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:33,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121080277] [2024-06-27 23:26:33,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121080277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:33,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:33,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:33,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665238863] [2024-06-27 23:26:33,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:33,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:33,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:33,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:33,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:33,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:33,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 227 transitions, 2118 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) [2024-06-27 23:26:33,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:33,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:33,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:33,741 INFO L124 PetriNetUnfolderBase]: 587/1153 cut-off events. [2024-06-27 23:26:33,742 INFO L125 PetriNetUnfolderBase]: For 218371/218371 co-relation queries the response was YES. [2024-06-27 23:26:33,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8581 conditions, 1153 events. 587/1153 cut-off events. For 218371/218371 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6557 event pairs, 206 based on Foata normal form. 8/1159 useless extension candidates. Maximal degree in co-relation 8437. Up to 993 conditions per place. [2024-06-27 23:26:33,756 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 206 selfloop transitions, 28 changer transitions 11/247 dead transitions. [2024-06-27 23:26:33,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 247 transitions, 2950 flow [2024-06-27 23:26:33,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:33,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:26:33,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:26:33,757 INFO L175 Difference]: Start difference. First operand has 307 places, 227 transitions, 2118 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:26:33,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 247 transitions, 2950 flow [2024-06-27 23:26:34,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 247 transitions, 2874 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 23:26:34,505 INFO L231 Difference]: Finished difference. Result has 304 places, 223 transitions, 2085 flow [2024-06-27 23:26:34,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2085, PETRI_PLACES=304, PETRI_TRANSITIONS=223} [2024-06-27 23:26:34,506 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 275 predicate places. [2024-06-27 23:26:34,506 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 223 transitions, 2085 flow [2024-06-27 23:26:34,506 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) [2024-06-27 23:26:34,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:34,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:34,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 23:26:34,507 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)] === [2024-06-27 23:26:34,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1975030833, now seen corresponding path program 32 times [2024-06-27 23:26:34,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:34,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768782979] [2024-06-27 23:26:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:34,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:36,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:36,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768782979] [2024-06-27 23:26:36,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768782979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:36,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:36,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:36,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482820478] [2024-06-27 23:26:36,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:36,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:36,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:36,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:36,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:36,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:36,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 223 transitions, 2085 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) [2024-06-27 23:26:36,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:36,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:36,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:37,132 INFO L124 PetriNetUnfolderBase]: 618/1218 cut-off events. [2024-06-27 23:26:37,132 INFO L125 PetriNetUnfolderBase]: For 266741/266741 co-relation queries the response was YES. [2024-06-27 23:26:37,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9844 conditions, 1218 events. 618/1218 cut-off events. For 266741/266741 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6998 event pairs, 114 based on Foata normal form. 8/1224 useless extension candidates. Maximal degree in co-relation 9701. Up to 655 conditions per place. [2024-06-27 23:26:37,145 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 183 selfloop transitions, 58 changer transitions 17/260 dead transitions. [2024-06-27 23:26:37,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 260 transitions, 3016 flow [2024-06-27 23:26:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:26:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:26:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 156 transitions. [2024-06-27 23:26:37,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:26:37,146 INFO L175 Difference]: Start difference. First operand has 304 places, 223 transitions, 2085 flow. Second operand 13 states and 156 transitions. [2024-06-27 23:26:37,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 260 transitions, 3016 flow [2024-06-27 23:26:37,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 260 transitions, 2942 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 23:26:37,837 INFO L231 Difference]: Finished difference. Result has 304 places, 222 transitions, 2139 flow [2024-06-27 23:26:37,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2139, PETRI_PLACES=304, PETRI_TRANSITIONS=222} [2024-06-27 23:26:37,838 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 275 predicate places. [2024-06-27 23:26:37,838 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 222 transitions, 2139 flow [2024-06-27 23:26:37,838 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) [2024-06-27 23:26:37,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:37,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 23:26:37,838 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)] === [2024-06-27 23:26:37,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash -669430573, now seen corresponding path program 33 times [2024-06-27 23:26:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:37,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307058078] [2024-06-27 23:26:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:39,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:39,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307058078] [2024-06-27 23:26:39,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307058078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:39,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367014411] [2024-06-27 23:26:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:39,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:39,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:39,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:40,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:40,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 222 transitions, 2139 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) [2024-06-27 23:26:40,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:40,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:40,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:40,698 INFO L124 PetriNetUnfolderBase]: 632/1246 cut-off events. [2024-06-27 23:26:40,698 INFO L125 PetriNetUnfolderBase]: For 302698/302698 co-relation queries the response was YES. [2024-06-27 23:26:40,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10990 conditions, 1246 events. 632/1246 cut-off events. For 302698/302698 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7199 event pairs, 152 based on Foata normal form. 8/1252 useless extension candidates. Maximal degree in co-relation 10847. Up to 918 conditions per place. [2024-06-27 23:26:40,709 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 182 selfloop transitions, 58 changer transitions 15/257 dead transitions. [2024-06-27 23:26:40,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 257 transitions, 3047 flow [2024-06-27 23:26:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:26:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:26:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-27 23:26:40,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128205128205128 [2024-06-27 23:26:40,710 INFO L175 Difference]: Start difference. First operand has 304 places, 222 transitions, 2139 flow. Second operand 13 states and 161 transitions. [2024-06-27 23:26:40,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 257 transitions, 3047 flow [2024-06-27 23:26:41,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 257 transitions, 2941 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 23:26:41,510 INFO L231 Difference]: Finished difference. Result has 301 places, 218 transitions, 2123 flow [2024-06-27 23:26:41,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2123, PETRI_PLACES=301, PETRI_TRANSITIONS=218} [2024-06-27 23:26:41,511 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 272 predicate places. [2024-06-27 23:26:41,511 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 218 transitions, 2123 flow [2024-06-27 23:26:41,511 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) [2024-06-27 23:26:41,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:41,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:41,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 23:26:41,511 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)] === [2024-06-27 23:26:41,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:41,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1879310667, now seen corresponding path program 34 times [2024-06-27 23:26:41,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:41,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926890031] [2024-06-27 23:26:41,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:41,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:43,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:43,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926890031] [2024-06-27 23:26:43,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926890031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:43,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:43,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741357915] [2024-06-27 23:26:43,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:43,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:43,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:43,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 218 transitions, 2123 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) [2024-06-27 23:26:43,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:43,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:43,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:44,049 INFO L124 PetriNetUnfolderBase]: 638/1262 cut-off events. [2024-06-27 23:26:44,049 INFO L125 PetriNetUnfolderBase]: For 342193/342193 co-relation queries the response was YES. [2024-06-27 23:26:44,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11939 conditions, 1262 events. 638/1262 cut-off events. For 342193/342193 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7310 event pairs, 175 based on Foata normal form. 8/1268 useless extension candidates. Maximal degree in co-relation 11800. Up to 1012 conditions per place. [2024-06-27 23:26:44,063 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 183 selfloop transitions, 57 changer transitions 8/250 dead transitions. [2024-06-27 23:26:44,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 250 transitions, 3001 flow [2024-06-27 23:26:44,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 23:26:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 23:26:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 163 transitions. [2024-06-27 23:26:44,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880952380952381 [2024-06-27 23:26:44,064 INFO L175 Difference]: Start difference. First operand has 301 places, 218 transitions, 2123 flow. Second operand 14 states and 163 transitions. [2024-06-27 23:26:44,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 250 transitions, 3001 flow [2024-06-27 23:26:45,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 250 transitions, 2903 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:26:45,016 INFO L231 Difference]: Finished difference. Result has 302 places, 216 transitions, 2128 flow [2024-06-27 23:26:45,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2128, PETRI_PLACES=302, PETRI_TRANSITIONS=216} [2024-06-27 23:26:45,019 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 273 predicate places. [2024-06-27 23:26:45,019 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 216 transitions, 2128 flow [2024-06-27 23:26:45,019 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) [2024-06-27 23:26:45,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:45,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:45,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 23:26:45,020 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)] === [2024-06-27 23:26:45,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:45,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1901538597, now seen corresponding path program 35 times [2024-06-27 23:26:45,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:45,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143658758] [2024-06-27 23:26:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:45,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:47,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:47,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143658758] [2024-06-27 23:26:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143658758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:47,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:47,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:47,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638060252] [2024-06-27 23:26:47,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:47,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:47,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:47,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:47,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:47,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:47,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 216 transitions, 2128 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) [2024-06-27 23:26:47,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:47,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:47,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:47,891 INFO L124 PetriNetUnfolderBase]: 610/1206 cut-off events. [2024-06-27 23:26:47,892 INFO L125 PetriNetUnfolderBase]: For 302816/302816 co-relation queries the response was YES. [2024-06-27 23:26:47,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10904 conditions, 1206 events. 610/1206 cut-off events. For 302816/302816 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6886 event pairs, 140 based on Foata normal form. 8/1212 useless extension candidates. Maximal degree in co-relation 10765. Up to 918 conditions per place. [2024-06-27 23:26:47,904 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 179 selfloop transitions, 57 changer transitions 11/249 dead transitions. [2024-06-27 23:26:47,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 249 transitions, 3014 flow [2024-06-27 23:26:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:26:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:26:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 156 transitions. [2024-06-27 23:26:47,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:26:47,905 INFO L175 Difference]: Start difference. First operand has 302 places, 216 transitions, 2128 flow. Second operand 13 states and 156 transitions. [2024-06-27 23:26:47,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 249 transitions, 3014 flow [2024-06-27 23:26:48,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 249 transitions, 2898 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 23:26:48,782 INFO L231 Difference]: Finished difference. Result has 302 places, 213 transitions, 2107 flow [2024-06-27 23:26:48,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2107, PETRI_PLACES=302, PETRI_TRANSITIONS=213} [2024-06-27 23:26:48,782 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 273 predicate places. [2024-06-27 23:26:48,783 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 213 transitions, 2107 flow [2024-06-27 23:26:48,783 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) [2024-06-27 23:26:48,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:48,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:48,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 23:26:48,783 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)] === [2024-06-27 23:26:48,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:48,784 INFO L85 PathProgramCache]: Analyzing trace with hash -611218153, now seen corresponding path program 36 times [2024-06-27 23:26:48,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:48,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777071698] [2024-06-27 23:26:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:48,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:50,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:50,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777071698] [2024-06-27 23:26:50,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777071698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:50,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:50,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:50,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083746559] [2024-06-27 23:26:50,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:50,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:50,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:50,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:50,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:50,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:26:50,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 213 transitions, 2107 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) [2024-06-27 23:26:50,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:50,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:26:50,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:51,506 INFO L124 PetriNetUnfolderBase]: 575/1137 cut-off events. [2024-06-27 23:26:51,507 INFO L125 PetriNetUnfolderBase]: For 263335/263335 co-relation queries the response was YES. [2024-06-27 23:26:51,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9610 conditions, 1137 events. 575/1137 cut-off events. For 263335/263335 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6427 event pairs, 135 based on Foata normal form. 10/1145 useless extension candidates. Maximal degree in co-relation 9471. Up to 948 conditions per place. [2024-06-27 23:26:51,518 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 167 selfloop transitions, 49 changer transitions 21/239 dead transitions. [2024-06-27 23:26:51,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 239 transitions, 2713 flow [2024-06-27 23:26:51,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:26:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:26:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-27 23:26:51,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37948717948717947 [2024-06-27 23:26:51,520 INFO L175 Difference]: Start difference. First operand has 302 places, 213 transitions, 2107 flow. Second operand 13 states and 148 transitions. [2024-06-27 23:26:51,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 239 transitions, 2713 flow [2024-06-27 23:26:52,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 239 transitions, 2553 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-27 23:26:52,310 INFO L231 Difference]: Finished difference. Result has 299 places, 206 transitions, 1976 flow [2024-06-27 23:26:52,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1976, PETRI_PLACES=299, PETRI_TRANSITIONS=206} [2024-06-27 23:26:52,310 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2024-06-27 23:26:52,310 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 206 transitions, 1976 flow [2024-06-27 23:26:52,310 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) [2024-06-27 23:26:52,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:52,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:52,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 23:26:52,311 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)] === [2024-06-27 23:26:52,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:52,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1605538093, now seen corresponding path program 37 times [2024-06-27 23:26:52,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:52,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017971950] [2024-06-27 23:26:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:52,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:54,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:54,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017971950] [2024-06-27 23:26:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017971950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:54,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:54,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:54,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760991576] [2024-06-27 23:26:54,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:54,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:54,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:54,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:54,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:54,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:26:54,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 206 transitions, 1976 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:54,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:54,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:26:54,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:55,127 INFO L124 PetriNetUnfolderBase]: 558/1098 cut-off events. [2024-06-27 23:26:55,127 INFO L125 PetriNetUnfolderBase]: For 252841/252841 co-relation queries the response was YES. [2024-06-27 23:26:55,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9338 conditions, 1098 events. 558/1098 cut-off events. For 252841/252841 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6115 event pairs, 100 based on Foata normal form. 8/1104 useless extension candidates. Maximal degree in co-relation 9199. Up to 655 conditions per place. [2024-06-27 23:26:55,139 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 50 changer transitions 15/235 dead transitions. [2024-06-27 23:26:55,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 235 transitions, 2816 flow [2024-06-27 23:26:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:55,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-27 23:26:55,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-27 23:26:55,140 INFO L175 Difference]: Start difference. First operand has 299 places, 206 transitions, 1976 flow. Second operand 12 states and 154 transitions. [2024-06-27 23:26:55,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 235 transitions, 2816 flow [2024-06-27 23:26:55,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 235 transitions, 2612 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-27 23:26:55,886 INFO L231 Difference]: Finished difference. Result has 285 places, 201 transitions, 1847 flow [2024-06-27 23:26:55,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1847, PETRI_PLACES=285, PETRI_TRANSITIONS=201} [2024-06-27 23:26:55,886 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-27 23:26:55,887 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 201 transitions, 1847 flow [2024-06-27 23:26:55,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:55,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:55,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:55,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 23:26:55,887 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)] === [2024-06-27 23:26:55,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:55,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1680886739, now seen corresponding path program 38 times [2024-06-27 23:26:55,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:55,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101375652] [2024-06-27 23:26:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:55,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:57,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:57,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101375652] [2024-06-27 23:26:57,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101375652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:57,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:57,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:26:57,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174999018] [2024-06-27 23:26:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:26:57,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:57,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:26:57,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:26:57,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:26:57,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 201 transitions, 1847 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:57,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:57,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:26:57,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:58,468 INFO L124 PetriNetUnfolderBase]: 568/1124 cut-off events. [2024-06-27 23:26:58,468 INFO L125 PetriNetUnfolderBase]: For 298083/298083 co-relation queries the response was YES. [2024-06-27 23:26:58,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10334 conditions, 1124 events. 568/1124 cut-off events. For 298083/298083 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6323 event pairs, 122 based on Foata normal form. 8/1130 useless extension candidates. Maximal degree in co-relation 10197. Up to 841 conditions per place. [2024-06-27 23:26:58,481 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 166 selfloop transitions, 50 changer transitions 11/229 dead transitions. [2024-06-27 23:26:58,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 229 transitions, 2671 flow [2024-06-27 23:26:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:26:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:26:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-27 23:26:58,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-27 23:26:58,483 INFO L175 Difference]: Start difference. First operand has 285 places, 201 transitions, 1847 flow. Second operand 12 states and 155 transitions. [2024-06-27 23:26:58,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 229 transitions, 2671 flow [2024-06-27 23:26:59,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 229 transitions, 2580 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 23:26:59,336 INFO L231 Difference]: Finished difference. Result has 280 places, 197 transitions, 1832 flow [2024-06-27 23:26:59,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1832, PETRI_PLACES=280, PETRI_TRANSITIONS=197} [2024-06-27 23:26:59,336 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 251 predicate places. [2024-06-27 23:26:59,337 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 197 transitions, 1832 flow [2024-06-27 23:26:59,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:59,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:59,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:59,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 23:26:59,337 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)] === [2024-06-27 23:26:59,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:59,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1680766769, now seen corresponding path program 39 times [2024-06-27 23:26:59,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:59,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824837575] [2024-06-27 23:26:59,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:59,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:01,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824837575] [2024-06-27 23:27:01,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824837575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:01,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:01,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:01,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918323458] [2024-06-27 23:27:01,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:01,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:01,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:01,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:01,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:01,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:01,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 197 transitions, 1832 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) [2024-06-27 23:27:01,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:01,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:01,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:01,938 INFO L124 PetriNetUnfolderBase]: 553/1099 cut-off events. [2024-06-27 23:27:01,939 INFO L125 PetriNetUnfolderBase]: For 280486/280486 co-relation queries the response was YES. [2024-06-27 23:27:01,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9937 conditions, 1099 events. 553/1099 cut-off events. For 280486/280486 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6179 event pairs, 140 based on Foata normal form. 10/1107 useless extension candidates. Maximal degree in co-relation 9803. Up to 899 conditions per place. [2024-06-27 23:27:01,951 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 155 selfloop transitions, 50 changer transitions 12/219 dead transitions. [2024-06-27 23:27:01,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 219 transitions, 2390 flow [2024-06-27 23:27:01,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:27:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:27:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 23:27:01,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 23:27:01,952 INFO L175 Difference]: Start difference. First operand has 280 places, 197 transitions, 1832 flow. Second operand 12 states and 147 transitions. [2024-06-27 23:27:01,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 219 transitions, 2390 flow [2024-06-27 23:27:02,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 219 transitions, 2288 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:27:02,705 INFO L231 Difference]: Finished difference. Result has 277 places, 193 transitions, 1796 flow [2024-06-27 23:27:02,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1796, PETRI_PLACES=277, PETRI_TRANSITIONS=193} [2024-06-27 23:27:02,705 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 248 predicate places. [2024-06-27 23:27:02,705 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 193 transitions, 1796 flow [2024-06-27 23:27:02,705 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) [2024-06-27 23:27:02,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:02,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:02,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 23:27:02,706 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)] === [2024-06-27 23:27:02,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash -111075813, now seen corresponding path program 40 times [2024-06-27 23:27:02,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:02,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055616005] [2024-06-27 23:27:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:02,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:04,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:04,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055616005] [2024-06-27 23:27:04,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055616005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:04,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:04,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:04,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190583204] [2024-06-27 23:27:04,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:04,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:04,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:04,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:04,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:04,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:04,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 193 transitions, 1796 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) [2024-06-27 23:27:04,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:04,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:04,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:04,915 INFO L124 PetriNetUnfolderBase]: 517/1031 cut-off events. [2024-06-27 23:27:04,915 INFO L125 PetriNetUnfolderBase]: For 224487/224487 co-relation queries the response was YES. [2024-06-27 23:27:04,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8755 conditions, 1031 events. 517/1031 cut-off events. For 224487/224487 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5716 event pairs, 109 based on Foata normal form. 8/1037 useless extension candidates. Maximal degree in co-relation 8623. Up to 841 conditions per place. [2024-06-27 23:27:04,926 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 151 selfloop transitions, 42 changer transitions 19/214 dead transitions. [2024-06-27 23:27:04,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 214 transitions, 2318 flow [2024-06-27 23:27:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:27:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:27:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-27 23:27:04,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:27:04,927 INFO L175 Difference]: Start difference. First operand has 277 places, 193 transitions, 1796 flow. Second operand 12 states and 144 transitions. [2024-06-27 23:27:04,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 214 transitions, 2318 flow [2024-06-27 23:27:05,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 214 transitions, 2214 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:27:05,548 INFO L231 Difference]: Finished difference. Result has 275 places, 184 transitions, 1694 flow [2024-06-27 23:27:05,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1694, PETRI_PLACES=275, PETRI_TRANSITIONS=184} [2024-06-27 23:27:05,549 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 246 predicate places. [2024-06-27 23:27:05,549 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 184 transitions, 1694 flow [2024-06-27 23:27:05,549 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) [2024-06-27 23:27:05,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:05,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:05,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 23:27:05,550 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)] === [2024-06-27 23:27:05,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1734075173, now seen corresponding path program 41 times [2024-06-27 23:27:05,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:05,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629969943] [2024-06-27 23:27:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:05,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:07,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:07,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629969943] [2024-06-27 23:27:07,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629969943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:07,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:07,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:27:07,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521992718] [2024-06-27 23:27:07,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:07,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:27:07,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:07,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:27:07,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:27:07,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:27:07,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 184 transitions, 1694 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) [2024-06-27 23:27:07,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:07,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:27:07,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:08,450 INFO L124 PetriNetUnfolderBase]: 511/1015 cut-off events. [2024-06-27 23:27:08,450 INFO L125 PetriNetUnfolderBase]: For 228741/228741 co-relation queries the response was YES. [2024-06-27 23:27:08,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 1015 events. 511/1015 cut-off events. For 228741/228741 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5595 event pairs, 121 based on Foata normal form. 10/1023 useless extension candidates. Maximal degree in co-relation 8524. Up to 882 conditions per place. [2024-06-27 23:27:08,460 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 167 selfloop transitions, 30 changer transitions 11/210 dead transitions. [2024-06-27 23:27:08,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 210 transitions, 2260 flow [2024-06-27 23:27:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:27:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:27:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-27 23:27:08,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:27:08,461 INFO L175 Difference]: Start difference. First operand has 275 places, 184 transitions, 1694 flow. Second operand 13 states and 143 transitions. [2024-06-27 23:27:08,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 210 transitions, 2260 flow [2024-06-27 23:27:09,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 210 transitions, 2158 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 23:27:09,049 INFO L231 Difference]: Finished difference. Result has 266 places, 183 transitions, 1654 flow [2024-06-27 23:27:09,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1654, PETRI_PLACES=266, PETRI_TRANSITIONS=183} [2024-06-27 23:27:09,049 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-27 23:27:09,049 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 183 transitions, 1654 flow [2024-06-27 23:27:09,049 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) [2024-06-27 23:27:09,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:09,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:09,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 23:27:09,050 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)] === [2024-06-27 23:27:09,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:09,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1733903123, now seen corresponding path program 42 times [2024-06-27 23:27:09,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:09,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485339064] [2024-06-27 23:27:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:09,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:10,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:10,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485339064] [2024-06-27 23:27:10,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485339064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:10,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:10,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:10,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594031245] [2024-06-27 23:27:10,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:10,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:10,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:10,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:10,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:11,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:11,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 183 transitions, 1654 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) [2024-06-27 23:27:11,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:11,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:11,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:11,627 INFO L124 PetriNetUnfolderBase]: 521/1041 cut-off events. [2024-06-27 23:27:11,627 INFO L125 PetriNetUnfolderBase]: For 241685/241685 co-relation queries the response was YES. [2024-06-27 23:27:11,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8866 conditions, 1041 events. 521/1041 cut-off events. For 241685/241685 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5789 event pairs, 115 based on Foata normal form. 14/1053 useless extension candidates. Maximal degree in co-relation 8753. Up to 772 conditions per place. [2024-06-27 23:27:11,637 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 158 selfloop transitions, 34 changer transitions 13/207 dead transitions. [2024-06-27 23:27:11,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 207 transitions, 2394 flow [2024-06-27 23:27:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:27:11,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-27 23:27:11,638 INFO L175 Difference]: Start difference. First operand has 266 places, 183 transitions, 1654 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:27:11,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 207 transitions, 2394 flow [2024-06-27 23:27:12,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 207 transitions, 2333 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:27:12,139 INFO L231 Difference]: Finished difference. Result has 264 places, 175 transitions, 1576 flow [2024-06-27 23:27:12,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1576, PETRI_PLACES=264, PETRI_TRANSITIONS=175} [2024-06-27 23:27:12,140 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-27 23:27:12,140 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 175 transitions, 1576 flow [2024-06-27 23:27:12,140 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) [2024-06-27 23:27:12,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:12,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:12,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 23:27:12,141 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)] === [2024-06-27 23:27:12,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1568620733, now seen corresponding path program 43 times [2024-06-27 23:27:12,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:12,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105727180] [2024-06-27 23:27:12,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:12,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:13,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105727180] [2024-06-27 23:27:13,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105727180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:13,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:13,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665394079] [2024-06-27 23:27:13,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:13,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:13,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:13,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:14,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:14,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 175 transitions, 1576 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) [2024-06-27 23:27:14,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:14,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:14,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:14,693 INFO L124 PetriNetUnfolderBase]: 493/985 cut-off events. [2024-06-27 23:27:14,694 INFO L125 PetriNetUnfolderBase]: For 218192/218192 co-relation queries the response was YES. [2024-06-27 23:27:14,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8606 conditions, 985 events. 493/985 cut-off events. For 218192/218192 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5365 event pairs, 94 based on Foata normal form. 8/991 useless extension candidates. Maximal degree in co-relation 8494. Up to 655 conditions per place. [2024-06-27 23:27:14,704 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 152 selfloop transitions, 35 changer transitions 11/200 dead transitions. [2024-06-27 23:27:14,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 200 transitions, 2304 flow [2024-06-27 23:27:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:27:14,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:27:14,705 INFO L175 Difference]: Start difference. First operand has 264 places, 175 transitions, 1576 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:27:14,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 200 transitions, 2304 flow [2024-06-27 23:27:15,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 200 transitions, 2224 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 23:27:15,056 INFO L231 Difference]: Finished difference. Result has 256 places, 171 transitions, 1538 flow [2024-06-27 23:27:15,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1538, PETRI_PLACES=256, PETRI_TRANSITIONS=171} [2024-06-27 23:27:15,057 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-27 23:27:15,057 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 171 transitions, 1538 flow [2024-06-27 23:27:15,057 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) [2024-06-27 23:27:15,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:15,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:15,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 23:27:15,057 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:15,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:15,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1739652817, now seen corresponding path program 17 times [2024-06-27 23:27:15,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:15,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785626211] [2024-06-27 23:27:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:15,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:16,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:16,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785626211] [2024-06-27 23:27:16,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785626211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:16,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:16,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:16,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000618362] [2024-06-27 23:27:16,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:16,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:16,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:16,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:16,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:17,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:27:17,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 171 transitions, 1538 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) [2024-06-27 23:27:17,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:17,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:27:17,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:17,579 INFO L124 PetriNetUnfolderBase]: 473/945 cut-off events. [2024-06-27 23:27:17,579 INFO L125 PetriNetUnfolderBase]: For 191674/191674 co-relation queries the response was YES. [2024-06-27 23:27:17,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8469 conditions, 945 events. 473/945 cut-off events. For 191674/191674 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5083 event pairs, 123 based on Foata normal form. 2/945 useless extension candidates. Maximal degree in co-relation 8360. Up to 866 conditions per place. [2024-06-27 23:27:17,588 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 162 selfloop transitions, 25 changer transitions 0/189 dead transitions. [2024-06-27 23:27:17,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 189 transitions, 2014 flow [2024-06-27 23:27:17,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:27:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:27:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 23:27:17,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:27:17,589 INFO L175 Difference]: Start difference. First operand has 256 places, 171 transitions, 1538 flow. Second operand 12 states and 126 transitions. [2024-06-27 23:27:17,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 189 transitions, 2014 flow [2024-06-27 23:27:17,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 189 transitions, 1952 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:27:17,989 INFO L231 Difference]: Finished difference. Result has 254 places, 172 transitions, 1578 flow [2024-06-27 23:27:17,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1578, PETRI_PLACES=254, PETRI_TRANSITIONS=172} [2024-06-27 23:27:17,990 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 225 predicate places. [2024-06-27 23:27:17,990 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 172 transitions, 1578 flow [2024-06-27 23:27:17,990 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) [2024-06-27 23:27:17,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:17,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:17,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 23:27:17,990 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:17,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1568740703, now seen corresponding path program 44 times [2024-06-27 23:27:17,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:17,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996154733] [2024-06-27 23:27:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:17,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:19,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:19,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996154733] [2024-06-27 23:27:19,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996154733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:19,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:19,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:19,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026459371] [2024-06-27 23:27:19,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:19,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:19,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:19,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:20,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:27:20,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 172 transitions, 1578 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) [2024-06-27 23:27:20,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:20,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:27:20,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:20,638 INFO L124 PetriNetUnfolderBase]: 495/991 cut-off events. [2024-06-27 23:27:20,638 INFO L125 PetriNetUnfolderBase]: For 212946/212946 co-relation queries the response was YES. [2024-06-27 23:27:20,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8624 conditions, 991 events. 495/991 cut-off events. For 212946/212946 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5449 event pairs, 119 based on Foata normal form. 10/999 useless extension candidates. Maximal degree in co-relation 8517. Up to 855 conditions per place. [2024-06-27 23:27:20,649 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 158 selfloop transitions, 28 changer transitions 11/199 dead transitions. [2024-06-27 23:27:20,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 199 transitions, 2122 flow [2024-06-27 23:27:20,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:27:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:27:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-27 23:27:20,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36923076923076925 [2024-06-27 23:27:20,650 INFO L175 Difference]: Start difference. First operand has 254 places, 172 transitions, 1578 flow. Second operand 13 states and 144 transitions. [2024-06-27 23:27:20,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 199 transitions, 2122 flow [2024-06-27 23:27:21,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 199 transitions, 2030 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 23:27:21,192 INFO L231 Difference]: Finished difference. Result has 259 places, 172 transitions, 1551 flow [2024-06-27 23:27:21,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1551, PETRI_PLACES=259, PETRI_TRANSITIONS=172} [2024-06-27 23:27:21,192 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-27 23:27:21,192 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 172 transitions, 1551 flow [2024-06-27 23:27:21,192 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) [2024-06-27 23:27:21,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:21,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:21,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 23:27:21,193 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:21,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:21,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1595374973, now seen corresponding path program 45 times [2024-06-27 23:27:21,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:21,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255469362] [2024-06-27 23:27:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:21,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:23,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:23,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255469362] [2024-06-27 23:27:23,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255469362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:23,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:23,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298405053] [2024-06-27 23:27:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:23,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:23,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:23,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:23,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 172 transitions, 1551 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) [2024-06-27 23:27:23,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:23,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:23,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:23,802 INFO L124 PetriNetUnfolderBase]: 483/971 cut-off events. [2024-06-27 23:27:23,802 INFO L125 PetriNetUnfolderBase]: For 208981/208981 co-relation queries the response was YES. [2024-06-27 23:27:23,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8493 conditions, 971 events. 483/971 cut-off events. For 208981/208981 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5311 event pairs, 100 based on Foata normal form. 8/977 useless extension candidates. Maximal degree in co-relation 8383. Up to 748 conditions per place. [2024-06-27 23:27:23,811 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 152 selfloop transitions, 33 changer transitions 10/197 dead transitions. [2024-06-27 23:27:23,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 197 transitions, 2277 flow [2024-06-27 23:27:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:27:23,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-27 23:27:23,812 INFO L175 Difference]: Start difference. First operand has 259 places, 172 transitions, 1551 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:27:23,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 197 transitions, 2277 flow [2024-06-27 23:27:24,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 197 transitions, 2215 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:27:24,235 INFO L231 Difference]: Finished difference. Result has 257 places, 167 transitions, 1507 flow [2024-06-27 23:27:24,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1507, PETRI_PLACES=257, PETRI_TRANSITIONS=167} [2024-06-27 23:27:24,235 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2024-06-27 23:27:24,235 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 167 transitions, 1507 flow [2024-06-27 23:27:24,235 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) [2024-06-27 23:27:24,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:24,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:24,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 23:27:24,236 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:24,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1739437553, now seen corresponding path program 46 times [2024-06-27 23:27:24,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:24,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916654467] [2024-06-27 23:27:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:24,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:25,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:25,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916654467] [2024-06-27 23:27:25,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916654467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:25,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:25,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:25,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860831604] [2024-06-27 23:27:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:25,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:25,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:25,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:26,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:26,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 167 transitions, 1507 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) [2024-06-27 23:27:26,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:26,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:26,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:26,648 INFO L124 PetriNetUnfolderBase]: 477/961 cut-off events. [2024-06-27 23:27:26,648 INFO L125 PetriNetUnfolderBase]: For 216956/216956 co-relation queries the response was YES. [2024-06-27 23:27:26,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8457 conditions, 961 events. 477/961 cut-off events. For 216956/216956 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5244 event pairs, 104 based on Foata normal form. 10/969 useless extension candidates. Maximal degree in co-relation 8348. Up to 814 conditions per place. [2024-06-27 23:27:26,657 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 141 selfloop transitions, 24 changer transitions 18/185 dead transitions. [2024-06-27 23:27:26,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 185 transitions, 1969 flow [2024-06-27 23:27:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 23:27:26,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:27:26,658 INFO L175 Difference]: Start difference. First operand has 257 places, 167 transitions, 1507 flow. Second operand 11 states and 130 transitions. [2024-06-27 23:27:26,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 185 transitions, 1969 flow [2024-06-27 23:27:27,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 185 transitions, 1887 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 23:27:27,079 INFO L231 Difference]: Finished difference. Result has 253 places, 156 transitions, 1340 flow [2024-06-27 23:27:27,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1340, PETRI_PLACES=253, PETRI_TRANSITIONS=156} [2024-06-27 23:27:27,079 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 224 predicate places. [2024-06-27 23:27:27,079 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 156 transitions, 1340 flow [2024-06-27 23:27:27,080 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) [2024-06-27 23:27:27,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:27,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:27,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 23:27:27,080 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:27,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:27,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1329351081, now seen corresponding path program 47 times [2024-06-27 23:27:27,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:27,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469212183] [2024-06-27 23:27:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:27,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:28,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:28,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469212183] [2024-06-27 23:27:28,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469212183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:28,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:28,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:28,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316441673] [2024-06-27 23:27:28,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:28,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:28,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:28,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:29,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:29,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 156 transitions, 1340 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) [2024-06-27 23:27:29,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:29,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:29,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:29,438 INFO L124 PetriNetUnfolderBase]: 422/864 cut-off events. [2024-06-27 23:27:29,438 INFO L125 PetriNetUnfolderBase]: For 174579/174579 co-relation queries the response was YES. [2024-06-27 23:27:29,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6937 conditions, 864 events. 422/864 cut-off events. For 174579/174579 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4626 event pairs, 83 based on Foata normal form. 10/872 useless extension candidates. Maximal degree in co-relation 6830. Up to 728 conditions per place. [2024-06-27 23:27:29,446 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 141 selfloop transitions, 19 changer transitions 14/176 dead transitions. [2024-06-27 23:27:29,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 176 transitions, 1804 flow [2024-06-27 23:27:29,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:27:29,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-27 23:27:29,447 INFO L175 Difference]: Start difference. First operand has 253 places, 156 transitions, 1340 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:27:29,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 176 transitions, 1804 flow [2024-06-27 23:27:29,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 176 transitions, 1719 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-27 23:27:29,800 INFO L231 Difference]: Finished difference. Result has 247 places, 151 transitions, 1268 flow [2024-06-27 23:27:29,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1268, PETRI_PLACES=247, PETRI_TRANSITIONS=151} [2024-06-27 23:27:29,801 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 218 predicate places. [2024-06-27 23:27:29,801 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 151 transitions, 1268 flow [2024-06-27 23:27:29,801 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) [2024-06-27 23:27:29,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:29,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:29,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 23:27:29,801 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:29,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:29,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1324702507, now seen corresponding path program 18 times [2024-06-27 23:27:29,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:29,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514026499] [2024-06-27 23:27:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:29,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:31,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514026499] [2024-06-27 23:27:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514026499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:31,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:31,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:31,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568603050] [2024-06-27 23:27:31,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:31,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:31,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:31,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:31,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:27:31,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 151 transitions, 1268 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) [2024-06-27 23:27:31,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:31,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:27:31,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:32,336 INFO L124 PetriNetUnfolderBase]: 400/818 cut-off events. [2024-06-27 23:27:32,336 INFO L125 PetriNetUnfolderBase]: For 142153/142153 co-relation queries the response was YES. [2024-06-27 23:27:32,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6624 conditions, 818 events. 400/818 cut-off events. For 142153/142153 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4311 event pairs, 80 based on Foata normal form. 2/818 useless extension candidates. Maximal degree in co-relation 6520. Up to 763 conditions per place. [2024-06-27 23:27:32,342 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 146 selfloop transitions, 18 changer transitions 0/166 dead transitions. [2024-06-27 23:27:32,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 166 transitions, 1682 flow [2024-06-27 23:27:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 23:27:32,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-27 23:27:32,343 INFO L175 Difference]: Start difference. First operand has 247 places, 151 transitions, 1268 flow. Second operand 11 states and 112 transitions. [2024-06-27 23:27:32,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 166 transitions, 1682 flow [2024-06-27 23:27:32,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 166 transitions, 1636 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:27:32,660 INFO L231 Difference]: Finished difference. Result has 240 places, 152 transitions, 1310 flow [2024-06-27 23:27:32,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1310, PETRI_PLACES=240, PETRI_TRANSITIONS=152} [2024-06-27 23:27:32,660 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 211 predicate places. [2024-06-27 23:27:32,661 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 152 transitions, 1310 flow [2024-06-27 23:27:32,661 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) [2024-06-27 23:27:32,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:32,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:32,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 23:27:32,661 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:32,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:32,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1324882431, now seen corresponding path program 48 times [2024-06-27 23:27:32,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:32,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539754813] [2024-06-27 23:27:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:32,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:34,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:34,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539754813] [2024-06-27 23:27:34,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539754813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:34,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:34,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:34,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600888042] [2024-06-27 23:27:34,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:34,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:34,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:34,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:34,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:34,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 152 transitions, 1310 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) [2024-06-27 23:27:34,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:34,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:34,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:35,174 INFO L124 PetriNetUnfolderBase]: 387/795 cut-off events. [2024-06-27 23:27:35,174 INFO L125 PetriNetUnfolderBase]: For 125779/125779 co-relation queries the response was YES. [2024-06-27 23:27:35,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5598 conditions, 795 events. 387/795 cut-off events. For 125779/125779 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4204 event pairs, 66 based on Foata normal form. 10/803 useless extension candidates. Maximal degree in co-relation 5497. Up to 671 conditions per place. [2024-06-27 23:27:35,181 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 137 selfloop transitions, 19 changer transitions 13/171 dead transitions. [2024-06-27 23:27:35,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 171 transitions, 1746 flow [2024-06-27 23:27:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:27:35,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:27:35,182 INFO L175 Difference]: Start difference. First operand has 240 places, 152 transitions, 1310 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:27:35,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 171 transitions, 1746 flow [2024-06-27 23:27:35,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 171 transitions, 1668 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 23:27:35,441 INFO L231 Difference]: Finished difference. Result has 242 places, 148 transitions, 1239 flow [2024-06-27 23:27:35,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1239, PETRI_PLACES=242, PETRI_TRANSITIONS=148} [2024-06-27 23:27:35,442 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 213 predicate places. [2024-06-27 23:27:35,442 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 148 transitions, 1239 flow [2024-06-27 23:27:35,442 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) [2024-06-27 23:27:35,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:35,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:35,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 23:27:35,442 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:35,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash 900780959, now seen corresponding path program 19 times [2024-06-27 23:27:35,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:35,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162449972] [2024-06-27 23:27:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:35,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:37,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:37,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162449972] [2024-06-27 23:27:37,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162449972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:37,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:37,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:37,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364728842] [2024-06-27 23:27:37,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:37,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:37,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:37,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:37,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:37,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:27:37,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 148 transitions, 1239 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) [2024-06-27 23:27:37,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:37,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:27:37,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:38,266 INFO L124 PetriNetUnfolderBase]: 366/753 cut-off events. [2024-06-27 23:27:38,267 INFO L125 PetriNetUnfolderBase]: For 101024/101024 co-relation queries the response was YES. [2024-06-27 23:27:38,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5403 conditions, 753 events. 366/753 cut-off events. For 101024/101024 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3928 event pairs, 66 based on Foata normal form. 2/753 useless extension candidates. Maximal degree in co-relation 5301. Up to 501 conditions per place. [2024-06-27 23:27:38,274 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 115 selfloop transitions, 47 changer transitions 0/164 dead transitions. [2024-06-27 23:27:38,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 164 transitions, 1663 flow [2024-06-27 23:27:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:27:38,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 23:27:38,275 INFO L175 Difference]: Start difference. First operand has 242 places, 148 transitions, 1239 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:27:38,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 164 transitions, 1663 flow [2024-06-27 23:27:38,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 164 transitions, 1608 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 23:27:38,485 INFO L231 Difference]: Finished difference. Result has 233 places, 149 transitions, 1332 flow [2024-06-27 23:27:38,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1332, PETRI_PLACES=233, PETRI_TRANSITIONS=149} [2024-06-27 23:27:38,485 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 204 predicate places. [2024-06-27 23:27:38,485 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 149 transitions, 1332 flow [2024-06-27 23:27:38,486 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) [2024-06-27 23:27:38,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:38,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:38,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 23:27:38,486 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:38,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:38,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2026308933, now seen corresponding path program 20 times [2024-06-27 23:27:38,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:38,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068936615] [2024-06-27 23:27:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:38,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:40,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:40,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068936615] [2024-06-27 23:27:40,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068936615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:40,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:40,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:40,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320965764] [2024-06-27 23:27:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:40,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:40,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:27:40,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 149 transitions, 1332 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) [2024-06-27 23:27:40,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:40,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:27:40,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:41,053 INFO L124 PetriNetUnfolderBase]: 370/760 cut-off events. [2024-06-27 23:27:41,053 INFO L125 PetriNetUnfolderBase]: For 97591/97591 co-relation queries the response was YES. [2024-06-27 23:27:41,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5483 conditions, 760 events. 370/760 cut-off events. For 97591/97591 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3983 event pairs, 66 based on Foata normal form. 2/760 useless extension candidates. Maximal degree in co-relation 5384. Up to 472 conditions per place. [2024-06-27 23:27:41,060 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 113 selfloop transitions, 51 changer transitions 0/166 dead transitions. [2024-06-27 23:27:41,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 166 transitions, 1922 flow [2024-06-27 23:27:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:27:41,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:27:41,061 INFO L175 Difference]: Start difference. First operand has 233 places, 149 transitions, 1332 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:27:41,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 166 transitions, 1922 flow [2024-06-27 23:27:41,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 166 transitions, 1784 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 23:27:41,274 INFO L231 Difference]: Finished difference. Result has 235 places, 150 transitions, 1350 flow [2024-06-27 23:27:41,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1350, PETRI_PLACES=235, PETRI_TRANSITIONS=150} [2024-06-27 23:27:41,275 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 206 predicate places. [2024-06-27 23:27:41,275 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 150 transitions, 1350 flow [2024-06-27 23:27:41,275 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) [2024-06-27 23:27:41,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:41,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:41,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 23:27:41,276 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:41,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2032983977, now seen corresponding path program 49 times [2024-06-27 23:27:41,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:41,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478175598] [2024-06-27 23:27:41,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:41,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:43,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:43,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478175598] [2024-06-27 23:27:43,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478175598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:43,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:43,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:43,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909012584] [2024-06-27 23:27:43,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:43,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:43,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:43,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:43,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:43,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:43,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 150 transitions, 1350 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) [2024-06-27 23:27:43,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:43,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:43,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:43,648 INFO L124 PetriNetUnfolderBase]: 386/796 cut-off events. [2024-06-27 23:27:43,648 INFO L125 PetriNetUnfolderBase]: For 125786/125786 co-relation queries the response was YES. [2024-06-27 23:27:43,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5594 conditions, 796 events. 386/796 cut-off events. For 125786/125786 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4238 event pairs, 71 based on Foata normal form. 10/804 useless extension candidates. Maximal degree in co-relation 5494. Up to 491 conditions per place. [2024-06-27 23:27:43,655 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 104 selfloop transitions, 52 changer transitions 11/169 dead transitions. [2024-06-27 23:27:43,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 169 transitions, 1788 flow [2024-06-27 23:27:43,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:27:43,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-27 23:27:43,656 INFO L175 Difference]: Start difference. First operand has 235 places, 150 transitions, 1350 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:27:43,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 169 transitions, 1788 flow [2024-06-27 23:27:43,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 169 transitions, 1634 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 23:27:43,876 INFO L231 Difference]: Finished difference. Result has 237 places, 147 transitions, 1285 flow [2024-06-27 23:27:43,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1285, PETRI_PLACES=237, PETRI_TRANSITIONS=147} [2024-06-27 23:27:43,876 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2024-06-27 23:27:43,876 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 147 transitions, 1285 flow [2024-06-27 23:27:43,877 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) [2024-06-27 23:27:43,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:43,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:43,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 23:27:43,877 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:43,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:43,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2032988627, now seen corresponding path program 50 times [2024-06-27 23:27:43,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:43,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648021441] [2024-06-27 23:27:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:43,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:45,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:45,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648021441] [2024-06-27 23:27:45,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648021441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:45,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:45,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538976355] [2024-06-27 23:27:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:45,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:45,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:45,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:45,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 147 transitions, 1285 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) [2024-06-27 23:27:45,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:45,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:45,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:46,188 INFO L124 PetriNetUnfolderBase]: 374/776 cut-off events. [2024-06-27 23:27:46,188 INFO L125 PetriNetUnfolderBase]: For 120189/120189 co-relation queries the response was YES. [2024-06-27 23:27:46,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5399 conditions, 776 events. 374/776 cut-off events. For 120189/120189 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4104 event pairs, 65 based on Foata normal form. 8/782 useless extension candidates. Maximal degree in co-relation 5299. Up to 481 conditions per place. [2024-06-27 23:27:46,195 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 102 selfloop transitions, 50 changer transitions 11/165 dead transitions. [2024-06-27 23:27:46,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 165 transitions, 1695 flow [2024-06-27 23:27:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:27:46,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:27:46,196 INFO L175 Difference]: Start difference. First operand has 237 places, 147 transitions, 1285 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:27:46,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 165 transitions, 1695 flow [2024-06-27 23:27:46,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 165 transitions, 1554 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:27:46,422 INFO L231 Difference]: Finished difference. Result has 234 places, 144 transitions, 1234 flow [2024-06-27 23:27:46,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1234, PETRI_PLACES=234, PETRI_TRANSITIONS=144} [2024-06-27 23:27:46,422 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 205 predicate places. [2024-06-27 23:27:46,422 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 144 transitions, 1234 flow [2024-06-27 23:27:46,422 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) [2024-06-27 23:27:46,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:46,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:46,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 23:27:46,423 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:46,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:46,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2032804053, now seen corresponding path program 21 times [2024-06-27 23:27:46,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:46,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034126786] [2024-06-27 23:27:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:46,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:48,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:48,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034126786] [2024-06-27 23:27:48,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034126786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:48,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:48,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:48,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266364321] [2024-06-27 23:27:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:48,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:48,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:48,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:27:48,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 144 transitions, 1234 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) [2024-06-27 23:27:48,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:48,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:27:48,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:48,976 INFO L124 PetriNetUnfolderBase]: 359/743 cut-off events. [2024-06-27 23:27:48,976 INFO L125 PetriNetUnfolderBase]: For 98387/98387 co-relation queries the response was YES. [2024-06-27 23:27:48,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5243 conditions, 743 events. 359/743 cut-off events. For 98387/98387 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3882 event pairs, 66 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 5145. Up to 492 conditions per place. [2024-06-27 23:27:48,982 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 116 selfloop transitions, 43 changer transitions 0/161 dead transitions. [2024-06-27 23:27:48,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 161 transitions, 1657 flow [2024-06-27 23:27:48,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:48,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:27:48,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:27:48,984 INFO L175 Difference]: Start difference. First operand has 234 places, 144 transitions, 1234 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:27:48,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 161 transitions, 1657 flow [2024-06-27 23:27:49,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 161 transitions, 1551 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:27:49,163 INFO L231 Difference]: Finished difference. Result has 230 places, 145 transitions, 1265 flow [2024-06-27 23:27:49,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1265, PETRI_PLACES=230, PETRI_TRANSITIONS=145} [2024-06-27 23:27:49,163 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 201 predicate places. [2024-06-27 23:27:49,164 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 145 transitions, 1265 flow [2024-06-27 23:27:49,164 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) [2024-06-27 23:27:49,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:49,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:49,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 23:27:49,164 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:49,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:49,164 INFO L85 PathProgramCache]: Analyzing trace with hash 727880505, now seen corresponding path program 51 times [2024-06-27 23:27:49,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:49,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650109161] [2024-06-27 23:27:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:49,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:50,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:50,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650109161] [2024-06-27 23:27:50,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650109161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:50,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:50,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:50,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113252194] [2024-06-27 23:27:50,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:50,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:51,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:51,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 145 transitions, 1265 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) [2024-06-27 23:27:51,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:51,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:51,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:51,644 INFO L124 PetriNetUnfolderBase]: 375/779 cut-off events. [2024-06-27 23:27:51,645 INFO L125 PetriNetUnfolderBase]: For 119416/119416 co-relation queries the response was YES. [2024-06-27 23:27:51,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5327 conditions, 779 events. 375/779 cut-off events. For 119416/119416 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4136 event pairs, 71 based on Foata normal form. 10/787 useless extension candidates. Maximal degree in co-relation 5231. Up to 474 conditions per place. [2024-06-27 23:27:51,651 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 104 selfloop transitions, 48 changer transitions 11/165 dead transitions. [2024-06-27 23:27:51,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 165 transitions, 1699 flow [2024-06-27 23:27:51,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:27:51,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-27 23:27:51,652 INFO L175 Difference]: Start difference. First operand has 230 places, 145 transitions, 1265 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:27:51,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 165 transitions, 1699 flow [2024-06-27 23:27:51,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 165 transitions, 1573 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:27:51,849 INFO L231 Difference]: Finished difference. Result has 232 places, 142 transitions, 1220 flow [2024-06-27 23:27:51,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1220, PETRI_PLACES=232, PETRI_TRANSITIONS=142} [2024-06-27 23:27:51,850 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2024-06-27 23:27:51,850 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 142 transitions, 1220 flow [2024-06-27 23:27:51,850 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) [2024-06-27 23:27:51,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:51,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:51,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 23:27:51,850 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:51,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash 727875855, now seen corresponding path program 52 times [2024-06-27 23:27:51,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:51,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282679789] [2024-06-27 23:27:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:51,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:53,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:53,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282679789] [2024-06-27 23:27:53,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282679789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:53,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:53,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:53,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861004631] [2024-06-27 23:27:53,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:53,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:53,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:53,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 142 transitions, 1220 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) [2024-06-27 23:27:53,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:53,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:53,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:54,242 INFO L124 PetriNetUnfolderBase]: 363/759 cut-off events. [2024-06-27 23:27:54,242 INFO L125 PetriNetUnfolderBase]: For 114345/114345 co-relation queries the response was YES. [2024-06-27 23:27:54,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5194 conditions, 759 events. 363/759 cut-off events. For 114345/114345 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4021 event pairs, 67 based on Foata normal form. 8/765 useless extension candidates. Maximal degree in co-relation 5097. Up to 464 conditions per place. [2024-06-27 23:27:54,248 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 102 selfloop transitions, 46 changer transitions 11/161 dead transitions. [2024-06-27 23:27:54,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 161 transitions, 1626 flow [2024-06-27 23:27:54,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:27:54,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-27 23:27:54,249 INFO L175 Difference]: Start difference. First operand has 232 places, 142 transitions, 1220 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:27:54,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 161 transitions, 1626 flow [2024-06-27 23:27:54,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 161 transitions, 1526 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:27:54,454 INFO L231 Difference]: Finished difference. Result has 230 places, 139 transitions, 1198 flow [2024-06-27 23:27:54,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1198, PETRI_PLACES=230, PETRI_TRANSITIONS=139} [2024-06-27 23:27:54,455 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 201 predicate places. [2024-06-27 23:27:54,455 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 139 transitions, 1198 flow [2024-06-27 23:27:54,455 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) [2024-06-27 23:27:54,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:54,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:54,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 23:27:54,456 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:54,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:54,456 INFO L85 PathProgramCache]: Analyzing trace with hash 723407205, now seen corresponding path program 53 times [2024-06-27 23:27:54,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:54,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021314522] [2024-06-27 23:27:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:54,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:56,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:56,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021314522] [2024-06-27 23:27:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021314522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:56,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:56,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:56,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193462241] [2024-06-27 23:27:56,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:56,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:56,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:56,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:56,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 139 transitions, 1198 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) [2024-06-27 23:27:56,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:56,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:56,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:56,687 INFO L124 PetriNetUnfolderBase]: 385/805 cut-off events. [2024-06-27 23:27:56,687 INFO L125 PetriNetUnfolderBase]: For 143767/143767 co-relation queries the response was YES. [2024-06-27 23:27:56,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6159 conditions, 805 events. 385/805 cut-off events. For 143767/143767 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4307 event pairs, 80 based on Foata normal form. 8/811 useless extension candidates. Maximal degree in co-relation 6063. Up to 436 conditions per place. [2024-06-27 23:27:56,693 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 106 selfloop transitions, 48 changer transitions 7/163 dead transitions. [2024-06-27 23:27:56,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 163 transitions, 1816 flow [2024-06-27 23:27:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:27:56,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-27 23:27:56,694 INFO L175 Difference]: Start difference. First operand has 230 places, 139 transitions, 1198 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:27:56,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 163 transitions, 1816 flow [2024-06-27 23:27:56,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 163 transitions, 1702 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 23:27:56,924 INFO L231 Difference]: Finished difference. Result has 226 places, 137 transitions, 1184 flow [2024-06-27 23:27:56,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1184, PETRI_PLACES=226, PETRI_TRANSITIONS=137} [2024-06-27 23:27:56,924 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 197 predicate places. [2024-06-27 23:27:56,925 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 137 transitions, 1184 flow [2024-06-27 23:27:56,925 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) [2024-06-27 23:27:56,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:56,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:56,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 23:27:56,925 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:56,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:56,925 INFO L85 PathProgramCache]: Analyzing trace with hash 723411855, now seen corresponding path program 54 times [2024-06-27 23:27:56,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:56,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015828732] [2024-06-27 23:27:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:56,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:58,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:58,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015828732] [2024-06-27 23:27:58,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015828732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:58,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:58,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666742589] [2024-06-27 23:27:58,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:58,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:58,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:58,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:27:58,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 137 transitions, 1184 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) [2024-06-27 23:27:58,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:58,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:27:58,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:59,028 INFO L124 PetriNetUnfolderBase]: 354/744 cut-off events. [2024-06-27 23:27:59,028 INFO L125 PetriNetUnfolderBase]: For 113150/113150 co-relation queries the response was YES. [2024-06-27 23:27:59,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5047 conditions, 744 events. 354/744 cut-off events. For 113150/113150 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3940 event pairs, 71 based on Foata normal form. 10/752 useless extension candidates. Maximal degree in co-relation 4953. Up to 436 conditions per place. [2024-06-27 23:27:59,034 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 96 selfloop transitions, 45 changer transitions 13/156 dead transitions. [2024-06-27 23:27:59,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 156 transitions, 1588 flow [2024-06-27 23:27:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:27:59,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-27 23:27:59,035 INFO L175 Difference]: Start difference. First operand has 226 places, 137 transitions, 1184 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:27:59,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 156 transitions, 1588 flow [2024-06-27 23:27:59,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 156 transitions, 1490 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:27:59,204 INFO L231 Difference]: Finished difference. Result has 225 places, 133 transitions, 1155 flow [2024-06-27 23:27:59,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1155, PETRI_PLACES=225, PETRI_TRANSITIONS=133} [2024-06-27 23:27:59,205 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 196 predicate places. [2024-06-27 23:27:59,205 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 133 transitions, 1155 flow [2024-06-27 23:27:59,205 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) [2024-06-27 23:27:59,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:59,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:59,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 23:27:59,205 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:27:59,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2091160919, now seen corresponding path program 55 times [2024-06-27 23:27:59,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309014613] [2024-06-27 23:27:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:59,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:01,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:01,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309014613] [2024-06-27 23:28:01,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309014613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:01,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:01,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:28:01,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106842818] [2024-06-27 23:28:01,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:01,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:28:01,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:01,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:28:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:28:01,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:01,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 133 transitions, 1155 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) [2024-06-27 23:28:01,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:01,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:01,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:01,746 INFO L124 PetriNetUnfolderBase]: 334/708 cut-off events. [2024-06-27 23:28:01,746 INFO L125 PetriNetUnfolderBase]: For 97987/97987 co-relation queries the response was YES. [2024-06-27 23:28:01,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 708 events. 334/708 cut-off events. For 97987/97987 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3717 event pairs, 61 based on Foata normal form. 8/714 useless extension candidates. Maximal degree in co-relation 4625. Up to 414 conditions per place. [2024-06-27 23:28:01,752 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 96 selfloop transitions, 39 changer transitions 14/151 dead transitions. [2024-06-27 23:28:01,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 151 transitions, 1525 flow [2024-06-27 23:28:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:01,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:28:01,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 23:28:01,753 INFO L175 Difference]: Start difference. First operand has 225 places, 133 transitions, 1155 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:28:01,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 151 transitions, 1525 flow [2024-06-27 23:28:01,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 151 transitions, 1419 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 23:28:01,918 INFO L231 Difference]: Finished difference. Result has 220 places, 129 transitions, 1115 flow [2024-06-27 23:28:01,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1115, PETRI_PLACES=220, PETRI_TRANSITIONS=129} [2024-06-27 23:28:01,919 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-27 23:28:01,919 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 129 transitions, 1115 flow [2024-06-27 23:28:01,919 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) [2024-06-27 23:28:01,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:01,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:01,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 23:28:01,919 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:01,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2095929463, now seen corresponding path program 22 times [2024-06-27 23:28:01,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:01,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449333231] [2024-06-27 23:28:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:01,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:03,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:03,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449333231] [2024-06-27 23:28:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449333231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:03,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:03,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:28:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610196762] [2024-06-27 23:28:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:28:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:28:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:28:03,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:03,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 129 transitions, 1115 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) [2024-06-27 23:28:03,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:03,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:03,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:04,355 INFO L124 PetriNetUnfolderBase]: 308/654 cut-off events. [2024-06-27 23:28:04,355 INFO L125 PetriNetUnfolderBase]: For 70617/70617 co-relation queries the response was YES. [2024-06-27 23:28:04,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4236 conditions, 654 events. 308/654 cut-off events. For 70617/70617 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3357 event pairs, 62 based on Foata normal form. 2/654 useless extension candidates. Maximal degree in co-relation 4145. Up to 403 conditions per place. [2024-06-27 23:28:04,361 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 103 selfloop transitions, 39 changer transitions 0/144 dead transitions. [2024-06-27 23:28:04,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 144 transitions, 1445 flow [2024-06-27 23:28:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:28:04,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 23:28:04,361 INFO L175 Difference]: Start difference. First operand has 220 places, 129 transitions, 1115 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:28:04,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 144 transitions, 1445 flow [2024-06-27 23:28:04,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 144 transitions, 1317 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-27 23:28:04,508 INFO L231 Difference]: Finished difference. Result has 213 places, 129 transitions, 1069 flow [2024-06-27 23:28:04,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1069, PETRI_PLACES=213, PETRI_TRANSITIONS=129} [2024-06-27 23:28:04,509 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-27 23:28:04,509 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 129 transitions, 1069 flow [2024-06-27 23:28:04,509 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) [2024-06-27 23:28:04,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:04,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:04,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 23:28:04,509 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:04,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:04,510 INFO L85 PathProgramCache]: Analyzing trace with hash 90280686, now seen corresponding path program 1 times [2024-06-27 23:28:04,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:04,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930756068] [2024-06-27 23:28:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:04,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:06,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:06,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930756068] [2024-06-27 23:28:06,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930756068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:06,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:06,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:28:06,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020065910] [2024-06-27 23:28:06,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:06,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:28:06,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:06,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:28:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:28:06,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:06,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 129 transitions, 1069 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) [2024-06-27 23:28:06,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:06,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:06,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:07,216 INFO L124 PetriNetUnfolderBase]: 316/674 cut-off events. [2024-06-27 23:28:07,217 INFO L125 PetriNetUnfolderBase]: For 73194/73194 co-relation queries the response was YES. [2024-06-27 23:28:07,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 674 events. 316/674 cut-off events. For 73194/73194 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3516 event pairs, 96 based on Foata normal form. 6/678 useless extension candidates. Maximal degree in co-relation 3999. Up to 612 conditions per place. [2024-06-27 23:28:07,222 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 119 selfloop transitions, 7 changer transitions 18/146 dead transitions. [2024-06-27 23:28:07,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 146 transitions, 1405 flow [2024-06-27 23:28:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-27 23:28:07,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:28:07,224 INFO L175 Difference]: Start difference. First operand has 213 places, 129 transitions, 1069 flow. Second operand 12 states and 120 transitions. [2024-06-27 23:28:07,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 146 transitions, 1405 flow [2024-06-27 23:28:07,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 146 transitions, 1264 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:28:07,342 INFO L231 Difference]: Finished difference. Result has 214 places, 123 transitions, 908 flow [2024-06-27 23:28:07,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=908, PETRI_PLACES=214, PETRI_TRANSITIONS=123} [2024-06-27 23:28:07,342 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-27 23:28:07,342 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 123 transitions, 908 flow [2024-06-27 23:28:07,342 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) [2024-06-27 23:28:07,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:07,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:07,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 23:28:07,343 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:07,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1293020248, now seen corresponding path program 2 times [2024-06-27 23:28:07,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:07,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103623161] [2024-06-27 23:28:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:07,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103623161] [2024-06-27 23:28:09,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103623161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:09,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:09,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:28:09,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105662081] [2024-06-27 23:28:09,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:09,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:28:09,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:09,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:28:09,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:28:09,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:09,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 123 transitions, 908 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) [2024-06-27 23:28:09,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:09,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:09,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:09,825 INFO L124 PetriNetUnfolderBase]: 304/647 cut-off events. [2024-06-27 23:28:09,825 INFO L125 PetriNetUnfolderBase]: For 74952/74952 co-relation queries the response was YES. [2024-06-27 23:28:09,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 647 events. 304/647 cut-off events. For 74952/74952 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3330 event pairs, 97 based on Foata normal form. 6/651 useless extension candidates. Maximal degree in co-relation 3771. Up to 471 conditions per place. [2024-06-27 23:28:09,830 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 102 selfloop transitions, 24 changer transitions 14/142 dead transitions. [2024-06-27 23:28:09,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 142 transitions, 1250 flow [2024-06-27 23:28:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 23:28:09,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-27 23:28:09,831 INFO L175 Difference]: Start difference. First operand has 214 places, 123 transitions, 908 flow. Second operand 12 states and 134 transitions. [2024-06-27 23:28:09,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 142 transitions, 1250 flow [2024-06-27 23:28:09,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 142 transitions, 1224 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 23:28:09,936 INFO L231 Difference]: Finished difference. Result has 205 places, 118 transitions, 905 flow [2024-06-27 23:28:09,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=905, PETRI_PLACES=205, PETRI_TRANSITIONS=118} [2024-06-27 23:28:09,937 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-27 23:28:09,937 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 118 transitions, 905 flow [2024-06-27 23:28:09,937 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) [2024-06-27 23:28:09,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:09,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:09,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 23:28:09,937 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:09,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash -434740364, now seen corresponding path program 3 times [2024-06-27 23:28:09,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:09,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754709946] [2024-06-27 23:28:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:09,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:12,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:12,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754709946] [2024-06-27 23:28:12,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754709946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:12,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:12,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:28:12,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445847394] [2024-06-27 23:28:12,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:12,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:28:12,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:12,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:28:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:28:12,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:12,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 118 transitions, 905 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) [2024-06-27 23:28:12,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:12,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:12,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:12,581 INFO L124 PetriNetUnfolderBase]: 294/625 cut-off events. [2024-06-27 23:28:12,581 INFO L125 PetriNetUnfolderBase]: For 67035/67035 co-relation queries the response was YES. [2024-06-27 23:28:12,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3719 conditions, 625 events. 294/625 cut-off events. For 67035/67035 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3188 event pairs, 97 based on Foata normal form. 6/629 useless extension candidates. Maximal degree in co-relation 3635. Up to 461 conditions per place. [2024-06-27 23:28:12,586 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 100 selfloop transitions, 23 changer transitions 12/137 dead transitions. [2024-06-27 23:28:12,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 137 transitions, 1237 flow [2024-06-27 23:28:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 23:28:12,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:28:12,587 INFO L175 Difference]: Start difference. First operand has 205 places, 118 transitions, 905 flow. Second operand 12 states and 132 transitions. [2024-06-27 23:28:12,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 137 transitions, 1237 flow [2024-06-27 23:28:12,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 137 transitions, 1179 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 23:28:12,689 INFO L231 Difference]: Finished difference. Result has 197 places, 114 transitions, 873 flow [2024-06-27 23:28:12,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=873, PETRI_PLACES=197, PETRI_TRANSITIONS=114} [2024-06-27 23:28:12,689 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2024-06-27 23:28:12,689 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 114 transitions, 873 flow [2024-06-27 23:28:12,689 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) [2024-06-27 23:28:12,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:12,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:12,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 23:28:12,690 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:12,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:12,690 INFO L85 PathProgramCache]: Analyzing trace with hash -519007856, now seen corresponding path program 4 times [2024-06-27 23:28:12,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:12,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051205389] [2024-06-27 23:28:12,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:14,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:14,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051205389] [2024-06-27 23:28:14,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051205389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:14,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:14,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:14,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82640443] [2024-06-27 23:28:14,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:14,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:14,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:14,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:14,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:14,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:14,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 114 transitions, 873 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) [2024-06-27 23:28:14,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:14,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:14,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:15,173 INFO L124 PetriNetUnfolderBase]: 285/606 cut-off events. [2024-06-27 23:28:15,173 INFO L125 PetriNetUnfolderBase]: For 59535/59535 co-relation queries the response was YES. [2024-06-27 23:28:15,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3561 conditions, 606 events. 285/606 cut-off events. For 59535/59535 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3044 event pairs, 97 based on Foata normal form. 6/610 useless extension candidates. Maximal degree in co-relation 3481. Up to 451 conditions per place. [2024-06-27 23:28:15,177 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 97 selfloop transitions, 22 changer transitions 11/132 dead transitions. [2024-06-27 23:28:15,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 132 transitions, 1189 flow [2024-06-27 23:28:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:15,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 23:28:15,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 23:28:15,178 INFO L175 Difference]: Start difference. First operand has 197 places, 114 transitions, 873 flow. Second operand 12 states and 129 transitions. [2024-06-27 23:28:15,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 132 transitions, 1189 flow [2024-06-27 23:28:15,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 132 transitions, 1135 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 23:28:15,266 INFO L231 Difference]: Finished difference. Result has 191 places, 111 transitions, 849 flow [2024-06-27 23:28:15,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=849, PETRI_PLACES=191, PETRI_TRANSITIONS=111} [2024-06-27 23:28:15,266 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-27 23:28:15,266 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 111 transitions, 849 flow [2024-06-27 23:28:15,266 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) [2024-06-27 23:28:15,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:15,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:15,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 23:28:15,267 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:15,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash -184682040, now seen corresponding path program 5 times [2024-06-27 23:28:15,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:15,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096595797] [2024-06-27 23:28:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:15,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:17,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096595797] [2024-06-27 23:28:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096595797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:17,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:17,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:17,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663894285] [2024-06-27 23:28:17,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:17,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:17,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:17,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:17,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 111 transitions, 849 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) [2024-06-27 23:28:17,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:17,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:17,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:17,627 INFO L124 PetriNetUnfolderBase]: 275/588 cut-off events. [2024-06-27 23:28:17,627 INFO L125 PetriNetUnfolderBase]: For 54194/54194 co-relation queries the response was YES. [2024-06-27 23:28:17,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3428 conditions, 588 events. 275/588 cut-off events. For 54194/54194 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2917 event pairs, 95 based on Foata normal form. 6/592 useless extension candidates. Maximal degree in co-relation 3351. Up to 433 conditions per place. [2024-06-27 23:28:17,631 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 90 selfloop transitions, 17 changer transitions 20/129 dead transitions. [2024-06-27 23:28:17,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 129 transitions, 1155 flow [2024-06-27 23:28:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:17,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 23:28:17,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 23:28:17,632 INFO L175 Difference]: Start difference. First operand has 191 places, 111 transitions, 849 flow. Second operand 12 states and 128 transitions. [2024-06-27 23:28:17,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 129 transitions, 1155 flow [2024-06-27 23:28:17,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 129 transitions, 1105 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:28:17,703 INFO L231 Difference]: Finished difference. Result has 187 places, 104 transitions, 787 flow [2024-06-27 23:28:17,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=787, PETRI_PLACES=187, PETRI_TRANSITIONS=104} [2024-06-27 23:28:17,704 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 158 predicate places. [2024-06-27 23:28:17,704 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 104 transitions, 787 flow [2024-06-27 23:28:17,704 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) [2024-06-27 23:28:17,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:17,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:17,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 23:28:17,705 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:17,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1413463012, now seen corresponding path program 6 times [2024-06-27 23:28:17,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:17,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146600171] [2024-06-27 23:28:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:17,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146600171] [2024-06-27 23:28:19,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146600171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:19,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:19,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921842669] [2024-06-27 23:28:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:19,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:19,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:19,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:19,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 104 transitions, 787 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) [2024-06-27 23:28:19,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:19,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:19,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:20,034 INFO L124 PetriNetUnfolderBase]: 259/553 cut-off events. [2024-06-27 23:28:20,034 INFO L125 PetriNetUnfolderBase]: For 50730/50730 co-relation queries the response was YES. [2024-06-27 23:28:20,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 553 events. 259/553 cut-off events. For 50730/50730 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2686 event pairs, 90 based on Foata normal form. 6/557 useless extension candidates. Maximal degree in co-relation 3170. Up to 464 conditions per place. [2024-06-27 23:28:20,042 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 89 selfloop transitions, 18 changer transitions 12/121 dead transitions. [2024-06-27 23:28:20,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 121 transitions, 1077 flow [2024-06-27 23:28:20,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 23:28:20,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 23:28:20,043 INFO L175 Difference]: Start difference. First operand has 187 places, 104 transitions, 787 flow. Second operand 12 states and 125 transitions. [2024-06-27 23:28:20,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 121 transitions, 1077 flow [2024-06-27 23:28:20,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 121 transitions, 1026 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 23:28:20,102 INFO L231 Difference]: Finished difference. Result has 175 places, 100 transitions, 743 flow [2024-06-27 23:28:20,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=743, PETRI_PLACES=175, PETRI_TRANSITIONS=100} [2024-06-27 23:28:20,103 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-27 23:28:20,103 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 100 transitions, 743 flow [2024-06-27 23:28:20,103 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) [2024-06-27 23:28:20,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:20,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:20,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 23:28:20,103 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:20,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:20,104 INFO L85 PathProgramCache]: Analyzing trace with hash 186900636, now seen corresponding path program 7 times [2024-06-27 23:28:20,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:20,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026931155] [2024-06-27 23:28:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:20,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:22,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:22,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026931155] [2024-06-27 23:28:22,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026931155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:22,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:22,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:28:22,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715766871] [2024-06-27 23:28:22,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:22,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:28:22,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:22,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:28:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:28:22,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:22,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 100 transitions, 743 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) [2024-06-27 23:28:22,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:22,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:22,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:22,857 INFO L124 PetriNetUnfolderBase]: 250/534 cut-off events. [2024-06-27 23:28:22,857 INFO L125 PetriNetUnfolderBase]: For 42669/42669 co-relation queries the response was YES. [2024-06-27 23:28:22,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 534 events. 250/534 cut-off events. For 42669/42669 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2550 event pairs, 90 based on Foata normal form. 6/538 useless extension candidates. Maximal degree in co-relation 2984. Up to 454 conditions per place. [2024-06-27 23:28:22,860 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 88 selfloop transitions, 15 changer transitions 11/116 dead transitions. [2024-06-27 23:28:22,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 116 transitions, 1017 flow [2024-06-27 23:28:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 23:28:22,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 23:28:22,861 INFO L175 Difference]: Start difference. First operand has 175 places, 100 transitions, 743 flow. Second operand 12 states and 125 transitions. [2024-06-27 23:28:22,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 116 transitions, 1017 flow [2024-06-27 23:28:22,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 116 transitions, 966 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 23:28:22,926 INFO L231 Difference]: Finished difference. Result has 168 places, 97 transitions, 708 flow [2024-06-27 23:28:22,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=708, PETRI_PLACES=168, PETRI_TRANSITIONS=97} [2024-06-27 23:28:22,927 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-27 23:28:22,927 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 97 transitions, 708 flow [2024-06-27 23:28:22,927 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) [2024-06-27 23:28:22,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:22,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:22,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 23:28:22,927 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:22,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:22,928 INFO L85 PathProgramCache]: Analyzing trace with hash 925946712, now seen corresponding path program 8 times [2024-06-27 23:28:22,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:22,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856510722] [2024-06-27 23:28:22,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:22,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:24,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:24,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856510722] [2024-06-27 23:28:24,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856510722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:24,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:24,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:28:24,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346024676] [2024-06-27 23:28:24,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:24,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:28:24,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:24,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:28:24,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:28:24,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:24,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 97 transitions, 708 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) [2024-06-27 23:28:24,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:24,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:24,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:25,303 INFO L124 PetriNetUnfolderBase]: 240/516 cut-off events. [2024-06-27 23:28:25,303 INFO L125 PetriNetUnfolderBase]: For 38148/38148 co-relation queries the response was YES. [2024-06-27 23:28:25,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 516 events. 240/516 cut-off events. For 38148/38148 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2462 event pairs, 88 based on Foata normal form. 6/520 useless extension candidates. Maximal degree in co-relation 2844. Up to 403 conditions per place. [2024-06-27 23:28:25,306 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 83 selfloop transitions, 18 changer transitions 12/115 dead transitions. [2024-06-27 23:28:25,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 115 transitions, 992 flow [2024-06-27 23:28:25,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 23:28:25,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 23:28:25,307 INFO L175 Difference]: Start difference. First operand has 168 places, 97 transitions, 708 flow. Second operand 12 states and 129 transitions. [2024-06-27 23:28:25,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 115 transitions, 992 flow [2024-06-27 23:28:25,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 115 transitions, 956 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:28:25,367 INFO L231 Difference]: Finished difference. Result has 164 places, 93 transitions, 687 flow [2024-06-27 23:28:25,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=687, PETRI_PLACES=164, PETRI_TRANSITIONS=93} [2024-06-27 23:28:25,367 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-27 23:28:25,367 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 93 transitions, 687 flow [2024-06-27 23:28:25,367 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) [2024-06-27 23:28:25,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:25,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:25,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-27 23:28:25,368 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:25,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:25,368 INFO L85 PathProgramCache]: Analyzing trace with hash -595633224, now seen corresponding path program 9 times [2024-06-27 23:28:25,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:25,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888352040] [2024-06-27 23:28:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:25,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:27,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:27,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888352040] [2024-06-27 23:28:27,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888352040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:27,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:27,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:28:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307876565] [2024-06-27 23:28:27,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:27,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:28:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:28:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:28:27,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:27,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 93 transitions, 687 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) [2024-06-27 23:28:27,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:27,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:27,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:28,060 INFO L124 PetriNetUnfolderBase]: 231/497 cut-off events. [2024-06-27 23:28:28,060 INFO L125 PetriNetUnfolderBase]: For 35316/35316 co-relation queries the response was YES. [2024-06-27 23:28:28,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 497 events. 231/497 cut-off events. For 35316/35316 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2333 event pairs, 88 based on Foata normal form. 6/501 useless extension candidates. Maximal degree in co-relation 2740. Up to 393 conditions per place. [2024-06-27 23:28:28,063 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 79 selfloop transitions, 16 changer transitions 13/110 dead transitions. [2024-06-27 23:28:28,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 110 transitions, 955 flow [2024-06-27 23:28:28,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 23:28:28,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:28:28,067 INFO L175 Difference]: Start difference. First operand has 164 places, 93 transitions, 687 flow. Second operand 12 states and 126 transitions. [2024-06-27 23:28:28,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 110 transitions, 955 flow [2024-06-27 23:28:28,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 110 transitions, 915 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:28:28,123 INFO L231 Difference]: Finished difference. Result has 160 places, 88 transitions, 651 flow [2024-06-27 23:28:28,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=148, 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=651, PETRI_PLACES=160, PETRI_TRANSITIONS=88} [2024-06-27 23:28:28,123 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2024-06-27 23:28:28,123 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 88 transitions, 651 flow [2024-06-27 23:28:28,123 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) [2024-06-27 23:28:28,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:28,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:28,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-27 23:28:28,124 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:28,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash 67666828, now seen corresponding path program 10 times [2024-06-27 23:28:28,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:28,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786897291] [2024-06-27 23:28:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:28,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:30,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:30,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786897291] [2024-06-27 23:28:30,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786897291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:30,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:30,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:28:30,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184053056] [2024-06-27 23:28:30,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:30,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:28:30,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:30,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:28:30,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:28:30,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:30,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 88 transitions, 651 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) [2024-06-27 23:28:30,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:30,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:30,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:30,631 INFO L124 PetriNetUnfolderBase]: 203/437 cut-off events. [2024-06-27 23:28:30,631 INFO L125 PetriNetUnfolderBase]: For 26757/26757 co-relation queries the response was YES. [2024-06-27 23:28:30,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 437 events. 203/437 cut-off events. For 26757/26757 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1965 event pairs, 75 based on Foata normal form. 6/441 useless extension candidates. Maximal degree in co-relation 2244. Up to 350 conditions per place. [2024-06-27 23:28:30,633 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 73 selfloop transitions, 14 changer transitions 15/104 dead transitions. [2024-06-27 23:28:30,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 104 transitions, 901 flow [2024-06-27 23:28:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:30,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 23:28:30,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 23:28:30,635 INFO L175 Difference]: Start difference. First operand has 160 places, 88 transitions, 651 flow. Second operand 12 states and 125 transitions. [2024-06-27 23:28:30,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 104 transitions, 901 flow [2024-06-27 23:28:30,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 104 transitions, 859 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 23:28:30,669 INFO L231 Difference]: Finished difference. Result has 152 places, 82 transitions, 601 flow [2024-06-27 23:28:30,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=601, PETRI_PLACES=152, PETRI_TRANSITIONS=82} [2024-06-27 23:28:30,669 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-06-27 23:28:30,669 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 82 transitions, 601 flow [2024-06-27 23:28:30,669 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) [2024-06-27 23:28:30,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:30,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:30,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-27 23:28:30,670 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:30,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash 187160106, now seen corresponding path program 11 times [2024-06-27 23:28:30,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:30,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837037728] [2024-06-27 23:28:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:30,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:32,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:32,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837037728] [2024-06-27 23:28:32,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837037728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:32,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:32,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:28:32,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134335523] [2024-06-27 23:28:32,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:32,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:28:32,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:28:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:28:33,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:33,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 82 transitions, 601 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) [2024-06-27 23:28:33,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:33,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:33,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:33,439 INFO L124 PetriNetUnfolderBase]: 192/412 cut-off events. [2024-06-27 23:28:33,439 INFO L125 PetriNetUnfolderBase]: For 22611/22611 co-relation queries the response was YES. [2024-06-27 23:28:33,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2145 conditions, 412 events. 192/412 cut-off events. For 22611/22611 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1799 event pairs, 73 based on Foata normal form. 6/416 useless extension candidates. Maximal degree in co-relation 2086. Up to 332 conditions per place. [2024-06-27 23:28:33,442 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 70 selfloop transitions, 11 changer transitions 15/98 dead transitions. [2024-06-27 23:28:33,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 98 transitions, 835 flow [2024-06-27 23:28:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-27 23:28:33,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-27 23:28:33,443 INFO L175 Difference]: Start difference. First operand has 152 places, 82 transitions, 601 flow. Second operand 12 states and 123 transitions. [2024-06-27 23:28:33,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 98 transitions, 835 flow [2024-06-27 23:28:33,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 98 transitions, 791 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-27 23:28:33,469 INFO L231 Difference]: Finished difference. Result has 140 places, 77 transitions, 543 flow [2024-06-27 23:28:33,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=543, PETRI_PLACES=140, PETRI_TRANSITIONS=77} [2024-06-27 23:28:33,469 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-06-27 23:28:33,469 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 77 transitions, 543 flow [2024-06-27 23:28:33,471 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) [2024-06-27 23:28:33,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:33,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:33,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-27 23:28:33,471 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:33,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:33,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1871014344, now seen corresponding path program 12 times [2024-06-27 23:28:33,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:33,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925210601] [2024-06-27 23:28:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:33,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:35,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:35,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925210601] [2024-06-27 23:28:35,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925210601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:35,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:35,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907720035] [2024-06-27 23:28:35,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:35,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:35,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:35,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:35,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:35,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 77 transitions, 543 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) [2024-06-27 23:28:35,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:35,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:35,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:36,021 INFO L124 PetriNetUnfolderBase]: 179/385 cut-off events. [2024-06-27 23:28:36,022 INFO L125 PetriNetUnfolderBase]: For 17958/17958 co-relation queries the response was YES. [2024-06-27 23:28:36,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 385 events. 179/385 cut-off events. For 17958/17958 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1654 event pairs, 69 based on Foata normal form. 6/389 useless extension candidates. Maximal degree in co-relation 1902. Up to 291 conditions per place. [2024-06-27 23:28:36,024 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 64 selfloop transitions, 17 changer transitions 10/93 dead transitions. [2024-06-27 23:28:36,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 93 transitions, 763 flow [2024-06-27 23:28:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:28:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:28:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 130 transitions. [2024-06-27 23:28:36,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:28:36,025 INFO L175 Difference]: Start difference. First operand has 140 places, 77 transitions, 543 flow. Second operand 13 states and 130 transitions. [2024-06-27 23:28:36,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 93 transitions, 763 flow [2024-06-27 23:28:36,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 93 transitions, 724 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 23:28:36,046 INFO L231 Difference]: Finished difference. Result has 132 places, 73 transitions, 513 flow [2024-06-27 23:28:36,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=513, PETRI_PLACES=132, PETRI_TRANSITIONS=73} [2024-06-27 23:28:36,047 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-06-27 23:28:36,047 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 73 transitions, 513 flow [2024-06-27 23:28:36,047 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) [2024-06-27 23:28:36,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:36,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:36,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-27 23:28:36,047 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:36,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:36,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1863605034, now seen corresponding path program 13 times [2024-06-27 23:28:36,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:36,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680680583] [2024-06-27 23:28:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:36,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:37,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:37,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680680583] [2024-06-27 23:28:37,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680680583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:37,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:37,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:28:37,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691974083] [2024-06-27 23:28:37,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:37,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:28:37,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:37,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:28:37,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:28:38,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:38,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 73 transitions, 513 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) [2024-06-27 23:28:38,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:38,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:38,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:38,397 INFO L124 PetriNetUnfolderBase]: 167/365 cut-off events. [2024-06-27 23:28:38,397 INFO L125 PetriNetUnfolderBase]: For 14560/14560 co-relation queries the response was YES. [2024-06-27 23:28:38,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 365 events. 167/365 cut-off events. For 14560/14560 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1539 event pairs, 71 based on Foata normal form. 6/369 useless extension candidates. Maximal degree in co-relation 1780. Up to 283 conditions per place. [2024-06-27 23:28:38,399 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 60 selfloop transitions, 16 changer transitions 10/88 dead transitions. [2024-06-27 23:28:38,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 88 transitions, 721 flow [2024-06-27 23:28:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:28:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:28:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2024-06-27 23:28:38,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282051282051282 [2024-06-27 23:28:38,400 INFO L175 Difference]: Start difference. First operand has 132 places, 73 transitions, 513 flow. Second operand 13 states and 128 transitions. [2024-06-27 23:28:38,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 88 transitions, 721 flow [2024-06-27 23:28:38,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 88 transitions, 668 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-06-27 23:28:38,416 INFO L231 Difference]: Finished difference. Result has 126 places, 69 transitions, 463 flow [2024-06-27 23:28:38,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=463, PETRI_PLACES=126, PETRI_TRANSITIONS=69} [2024-06-27 23:28:38,416 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-27 23:28:38,416 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 69 transitions, 463 flow [2024-06-27 23:28:38,416 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) [2024-06-27 23:28:38,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:38,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:38,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-27 23:28:38,417 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:38,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash -373049064, now seen corresponding path program 14 times [2024-06-27 23:28:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:38,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574657669] [2024-06-27 23:28:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:38,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:40,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:40,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574657669] [2024-06-27 23:28:40,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574657669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:40,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:40,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:40,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029078413] [2024-06-27 23:28:40,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:40,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:40,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:40,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:40,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:40,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:40,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 69 transitions, 463 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) [2024-06-27 23:28:40,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:40,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:40,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:40,662 INFO L124 PetriNetUnfolderBase]: 137/307 cut-off events. [2024-06-27 23:28:40,662 INFO L125 PetriNetUnfolderBase]: For 9526/9526 co-relation queries the response was YES. [2024-06-27 23:28:40,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 307 events. 137/307 cut-off events. For 9526/9526 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1242 event pairs, 63 based on Foata normal form. 8/313 useless extension candidates. Maximal degree in co-relation 1280. Up to 238 conditions per place. [2024-06-27 23:28:40,664 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 58 selfloop transitions, 12 changer transitions 11/83 dead transitions. [2024-06-27 23:28:40,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 83 transitions, 673 flow [2024-06-27 23:28:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-27 23:28:40,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:28:40,665 INFO L175 Difference]: Start difference. First operand has 126 places, 69 transitions, 463 flow. Second operand 12 states and 120 transitions. [2024-06-27 23:28:40,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 83 transitions, 673 flow [2024-06-27 23:28:40,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 83 transitions, 637 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 23:28:40,675 INFO L231 Difference]: Finished difference. Result has 122 places, 64 transitions, 418 flow [2024-06-27 23:28:40,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=418, PETRI_PLACES=122, PETRI_TRANSITIONS=64} [2024-06-27 23:28:40,676 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2024-06-27 23:28:40,676 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 64 transitions, 418 flow [2024-06-27 23:28:40,676 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) [2024-06-27 23:28:40,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:40,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:40,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-27 23:28:40,676 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:40,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1862092344, now seen corresponding path program 15 times [2024-06-27 23:28:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:40,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415103224] [2024-06-27 23:28:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:40,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:42,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:42,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415103224] [2024-06-27 23:28:42,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415103224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:42,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:42,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:28:42,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792010856] [2024-06-27 23:28:42,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:42,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:28:42,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:42,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:28:42,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:28:42,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:42,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 64 transitions, 418 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) [2024-06-27 23:28:42,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:42,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:42,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:42,899 INFO L124 PetriNetUnfolderBase]: 126/286 cut-off events. [2024-06-27 23:28:42,899 INFO L125 PetriNetUnfolderBase]: For 7802/7802 co-relation queries the response was YES. [2024-06-27 23:28:42,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 286 events. 126/286 cut-off events. For 7802/7802 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1128 event pairs, 53 based on Foata normal form. 6/290 useless extension candidates. Maximal degree in co-relation 1164. Up to 218 conditions per place. [2024-06-27 23:28:42,900 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 55 selfloop transitions, 8 changer transitions 16/81 dead transitions. [2024-06-27 23:28:42,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 81 transitions, 616 flow [2024-06-27 23:28:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:28:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:28:42,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-27 23:28:42,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32051282051282054 [2024-06-27 23:28:42,901 INFO L175 Difference]: Start difference. First operand has 122 places, 64 transitions, 418 flow. Second operand 13 states and 125 transitions. [2024-06-27 23:28:42,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 81 transitions, 616 flow [2024-06-27 23:28:42,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 81 transitions, 572 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-27 23:28:42,910 INFO L231 Difference]: Finished difference. Result has 117 places, 59 transitions, 367 flow [2024-06-27 23:28:42,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=367, PETRI_PLACES=117, PETRI_TRANSITIONS=59} [2024-06-27 23:28:42,911 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-27 23:28:42,911 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 59 transitions, 367 flow [2024-06-27 23:28:42,911 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) [2024-06-27 23:28:42,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:42,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:42,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-27 23:28:42,911 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:42,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:42,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1870747434, now seen corresponding path program 16 times [2024-06-27 23:28:42,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:42,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411836232] [2024-06-27 23:28:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:42,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:44,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:44,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411836232] [2024-06-27 23:28:44,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411836232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:44,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:44,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:44,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924889356] [2024-06-27 23:28:44,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:44,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:44,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:44,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:44,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:45,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:45,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 59 transitions, 367 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) [2024-06-27 23:28:45,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:45,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:45,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:45,460 INFO L124 PetriNetUnfolderBase]: 108/252 cut-off events. [2024-06-27 23:28:45,461 INFO L125 PetriNetUnfolderBase]: For 7798/7798 co-relation queries the response was YES. [2024-06-27 23:28:45,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 252 events. 108/252 cut-off events. For 7798/7798 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 941 event pairs, 64 based on Foata normal form. 8/258 useless extension candidates. Maximal degree in co-relation 962. Up to 184 conditions per place. [2024-06-27 23:28:45,462 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 42 selfloop transitions, 3 changer transitions 25/72 dead transitions. [2024-06-27 23:28:45,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 72 transitions, 539 flow [2024-06-27 23:28:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 23:28:45,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-27 23:28:45,462 INFO L175 Difference]: Start difference. First operand has 117 places, 59 transitions, 367 flow. Second operand 11 states and 111 transitions. [2024-06-27 23:28:45,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 72 transitions, 539 flow [2024-06-27 23:28:45,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 72 transitions, 503 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-27 23:28:45,468 INFO L231 Difference]: Finished difference. Result has 107 places, 46 transitions, 265 flow [2024-06-27 23:28:45,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=265, PETRI_PLACES=107, PETRI_TRANSITIONS=46} [2024-06-27 23:28:45,468 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-27 23:28:45,469 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 46 transitions, 265 flow [2024-06-27 23:28:45,469 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) [2024-06-27 23:28:45,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:45,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:45,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-27 23:28:45,469 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:45,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:45,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1902690984, now seen corresponding path program 17 times [2024-06-27 23:28:45,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:45,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980762343] [2024-06-27 23:28:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:45,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:47,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:47,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980762343] [2024-06-27 23:28:47,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980762343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:47,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:47,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:47,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413595530] [2024-06-27 23:28:47,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:47,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:47,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:47,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:47,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:47,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:28:47,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 46 transitions, 265 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) [2024-06-27 23:28:47,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:47,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:28:47,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:48,128 INFO L124 PetriNetUnfolderBase]: 90/210 cut-off events. [2024-06-27 23:28:48,128 INFO L125 PetriNetUnfolderBase]: For 5404/5407 co-relation queries the response was YES. [2024-06-27 23:28:48,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 210 events. 90/210 cut-off events. For 5404/5407 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 713 event pairs, 17 based on Foata normal form. 8/216 useless extension candidates. Maximal degree in co-relation 763. Up to 123 conditions per place. [2024-06-27 23:28:48,129 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 29 selfloop transitions, 4 changer transitions 26/61 dead transitions. [2024-06-27 23:28:48,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 61 transitions, 421 flow [2024-06-27 23:28:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 23:28:48,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-27 23:28:48,130 INFO L175 Difference]: Start difference. First operand has 107 places, 46 transitions, 265 flow. Second operand 11 states and 119 transitions. [2024-06-27 23:28:48,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 61 transitions, 421 flow [2024-06-27 23:28:48,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 61 transitions, 378 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-27 23:28:48,133 INFO L231 Difference]: Finished difference. Result has 89 places, 33 transitions, 179 flow [2024-06-27 23:28:48,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=179, PETRI_PLACES=89, PETRI_TRANSITIONS=33} [2024-06-27 23:28:48,134 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-27 23:28:48,134 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 33 transitions, 179 flow [2024-06-27 23:28:48,134 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) [2024-06-27 23:28:48,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:48,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:48,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-27 23:28:48,134 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:48,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:48,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2147257334, now seen corresponding path program 18 times [2024-06-27 23:28:48,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:48,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738843055] [2024-06-27 23:28:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:50,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:50,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738843055] [2024-06-27 23:28:50,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738843055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:50,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:50,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:50,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204719353] [2024-06-27 23:28:50,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:50,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:50,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:50,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:50,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:28:50,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 33 transitions, 179 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) [2024-06-27 23:28:50,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:50,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:28:50,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:50,807 INFO L124 PetriNetUnfolderBase]: 67/154 cut-off events. [2024-06-27 23:28:50,807 INFO L125 PetriNetUnfolderBase]: For 3730/3730 co-relation queries the response was YES. [2024-06-27 23:28:50,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 154 events. 67/154 cut-off events. For 3730/3730 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 461 event pairs, 15 based on Foata normal form. 6/158 useless extension candidates. Maximal degree in co-relation 541. Up to 72 conditions per place. [2024-06-27 23:28:50,808 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 21 selfloop transitions, 12 changer transitions 11/46 dead transitions. [2024-06-27 23:28:50,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 46 transitions, 295 flow [2024-06-27 23:28:50,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 23:28:50,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 23:28:50,809 INFO L175 Difference]: Start difference. First operand has 89 places, 33 transitions, 179 flow. Second operand 11 states and 115 transitions. [2024-06-27 23:28:50,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 46 transitions, 295 flow [2024-06-27 23:28:50,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 46 transitions, 265 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-27 23:28:50,811 INFO L231 Difference]: Finished difference. Result has 68 places, 30 transitions, 162 flow [2024-06-27 23:28:50,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=30} [2024-06-27 23:28:50,811 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-27 23:28:50,811 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 30 transitions, 162 flow [2024-06-27 23:28:50,811 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) [2024-06-27 23:28:50,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:50,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:50,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-27 23:28:50,812 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:50,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:50,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2140300652, now seen corresponding path program 19 times [2024-06-27 23:28:50,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:50,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396348672] [2024-06-27 23:28:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:50,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:52,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:52,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396348672] [2024-06-27 23:28:52,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396348672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:52,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:52,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:52,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066702945] [2024-06-27 23:28:52,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:52,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:52,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:52,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:28:52,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 30 transitions, 162 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) [2024-06-27 23:28:52,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:52,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:28:52,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:53,157 INFO L124 PetriNetUnfolderBase]: 57/136 cut-off events. [2024-06-27 23:28:53,157 INFO L125 PetriNetUnfolderBase]: For 1736/1736 co-relation queries the response was YES. [2024-06-27 23:28:53,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 136 events. 57/136 cut-off events. For 1736/1736 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 377 event pairs, 4 based on Foata normal form. 6/140 useless extension candidates. Maximal degree in co-relation 458. Up to 42 conditions per place. [2024-06-27 23:28:53,158 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 19 selfloop transitions, 12 changer transitions 10/43 dead transitions. [2024-06-27 23:28:53,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 43 transitions, 272 flow [2024-06-27 23:28:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-27 23:28:53,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090909090909091 [2024-06-27 23:28:53,159 INFO L175 Difference]: Start difference. First operand has 68 places, 30 transitions, 162 flow. Second operand 11 states and 102 transitions. [2024-06-27 23:28:53,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 43 transitions, 272 flow [2024-06-27 23:28:53,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 43 transitions, 242 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:28:53,160 INFO L231 Difference]: Finished difference. Result has 64 places, 26 transitions, 140 flow [2024-06-27 23:28:53,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=140, PETRI_PLACES=64, PETRI_TRANSITIONS=26} [2024-06-27 23:28:53,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-27 23:28:53,161 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 26 transitions, 140 flow [2024-06-27 23:28:53,161 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) [2024-06-27 23:28:53,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:53,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:53,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-27 23:28:53,161 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:53,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:53,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1407585018, now seen corresponding path program 20 times [2024-06-27 23:28:53,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:53,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764576294] [2024-06-27 23:28:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:53,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:55,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764576294] [2024-06-27 23:28:55,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764576294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:55,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:55,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:55,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377670731] [2024-06-27 23:28:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:55,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:55,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:28:55,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 26 transitions, 140 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) [2024-06-27 23:28:55,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:55,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:28:55,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:55,961 INFO L124 PetriNetUnfolderBase]: 45/112 cut-off events. [2024-06-27 23:28:55,961 INFO L125 PetriNetUnfolderBase]: For 1369/1369 co-relation queries the response was YES. [2024-06-27 23:28:55,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 112 events. 45/112 cut-off events. For 1369/1369 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 278 event pairs, 13 based on Foata normal form. 6/116 useless extension candidates. Maximal degree in co-relation 386. Up to 44 conditions per place. [2024-06-27 23:28:55,961 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 18 selfloop transitions, 5 changer transitions 14/39 dead transitions. [2024-06-27 23:28:55,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 39 transitions, 242 flow [2024-06-27 23:28:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:28:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:28:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 23:28:55,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 23:28:55,962 INFO L175 Difference]: Start difference. First operand has 64 places, 26 transitions, 140 flow. Second operand 10 states and 107 transitions. [2024-06-27 23:28:55,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 39 transitions, 242 flow [2024-06-27 23:28:55,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 39 transitions, 210 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 23:28:55,964 INFO L231 Difference]: Finished difference. Result has 57 places, 21 transitions, 98 flow [2024-06-27 23:28:55,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=98, PETRI_PLACES=57, PETRI_TRANSITIONS=21} [2024-06-27 23:28:55,964 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-27 23:28:55,964 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 21 transitions, 98 flow [2024-06-27 23:28:55,964 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) [2024-06-27 23:28:55,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:55,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:55,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-27 23:28:55,965 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:55,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:55,965 INFO L85 PathProgramCache]: Analyzing trace with hash 549305134, now seen corresponding path program 21 times [2024-06-27 23:28:55,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:55,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845177519] [2024-06-27 23:28:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:55,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:58,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845177519] [2024-06-27 23:28:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845177519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:58,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:58,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:58,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207609679] [2024-06-27 23:28:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:58,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:58,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:58,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:28:58,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 21 transitions, 98 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) [2024-06-27 23:28:58,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:58,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:28:58,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:58,841 INFO L124 PetriNetUnfolderBase]: 20/57 cut-off events. [2024-06-27 23:28:58,842 INFO L125 PetriNetUnfolderBase]: For 440/440 co-relation queries the response was YES. [2024-06-27 23:28:58,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 57 events. 20/57 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 6/61 useless extension candidates. Maximal degree in co-relation 147. Up to 24 conditions per place. [2024-06-27 23:28:58,842 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-06-27 23:28:58,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 28 transitions, 140 flow [2024-06-27 23:28:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:28:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:28:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-27 23:28:58,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3233333333333333 [2024-06-27 23:28:58,843 INFO L175 Difference]: Start difference. First operand has 57 places, 21 transitions, 98 flow. Second operand 10 states and 97 transitions. [2024-06-27 23:28:58,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 28 transitions, 140 flow [2024-06-27 23:28:58,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 28 transitions, 114 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-27 23:28:58,843 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-27 23:28:58,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=10, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-27 23:28:58,844 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-27 23:28:58,844 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-27 23:28:58,844 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) [2024-06-27 23:28:58,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 23:28:58,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 23:28:58,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 23:28:58,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 23:28:58,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-27 23:28:58,848 INFO L445 BasicCegarLoop]: Path program histogram: [55, 26, 24, 22, 21, 18, 13, 10, 10, 8, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:58,850 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:28:58,850 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:28:58,857 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 23:28:58,858 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 23:28:58,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:28:58 BasicIcfg [2024-06-27 23:28:58,858 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:28:58,859 INFO L158 Benchmark]: Toolchain (without parser) took 579694.50ms. Allocated memory was 165.7MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 96.6MB in the beginning and 919.3MB in the end (delta: -822.7MB). Peak memory consumption was 642.6MB. Max. memory is 16.1GB. [2024-06-27 23:28:58,859 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 96.5MB. Free memory was 50.7MB in the beginning and 50.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:28:58,859 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 165.7MB. Free memory was 133.9MB in the beginning and 133.9MB in the end (delta: 24.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:28:58,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.71ms. Allocated memory is still 165.7MB. Free memory was 96.1MB in the beginning and 110.8MB in the end (delta: -14.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-27 23:28:58,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.24ms. Allocated memory is still 165.7MB. Free memory was 110.8MB in the beginning and 104.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 23:28:58,860 INFO L158 Benchmark]: Boogie Preprocessor took 76.45ms. Allocated memory is still 165.7MB. Free memory was 104.5MB in the beginning and 100.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:28:58,867 INFO L158 Benchmark]: RCFGBuilder took 814.33ms. Allocated memory is still 165.7MB. Free memory was 100.3MB in the beginning and 85.2MB in the end (delta: 15.2MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2024-06-27 23:28:58,867 INFO L158 Benchmark]: TraceAbstraction took 578162.01ms. Allocated memory was 165.7MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 84.1MB in the beginning and 919.3MB in the end (delta: -835.2MB). Peak memory consumption was 631.6MB. Max. memory is 16.1GB. [2024-06-27 23:28:58,868 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 96.5MB. Free memory was 50.7MB in the beginning and 50.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 165.7MB. Free memory was 133.9MB in the beginning and 133.9MB in the end (delta: 24.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.71ms. Allocated memory is still 165.7MB. Free memory was 96.1MB in the beginning and 110.8MB in the end (delta: -14.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.24ms. Allocated memory is still 165.7MB. Free memory was 110.8MB in the beginning and 104.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.45ms. Allocated memory is still 165.7MB. Free memory was 104.5MB in the beginning and 100.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 814.33ms. Allocated memory is still 165.7MB. Free memory was 100.3MB in the beginning and 85.2MB in the end (delta: 15.2MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. * TraceAbstraction took 578162.01ms. Allocated memory was 165.7MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 84.1MB in the beginning and 919.3MB in the end (delta: -835.2MB). Peak memory consumption was 631.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 815]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 816]: 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: 578.1s, OverallIterations: 239, TraceHistogramMax: 1, PathProgramHistogramMax: 55, EmptinessCheckTime: 0.0s, AutomataDifference: 203.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13200 SdHoareTripleChecker+Valid, 67.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10990 mSDsluCounter, 4728 SdHoareTripleChecker+Invalid, 59.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3624 mSDsCounter, 3733 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96075 IncrementalHoareTripleChecker+Invalid, 99808 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3733 mSolverCounterUnsat, 1104 mSDtfsCounter, 96075 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2761 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2756 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4060 ImplicationChecksByTransitivity, 84.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3852occurred in iteration=136, InterpolantAutomatonStates: 2455, 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: 0.3s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 368.8s InterpolantComputationTime, 3769 NumberOfCodeBlocks, 3769 NumberOfCodeBlocksAsserted, 239 NumberOfCheckSat, 3530 ConstructedInterpolants, 0 QuantifiedInterpolants, 185294 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 239 InterpolantComputations, 239 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! [2024-06-27 23:28:58,986 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