./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:34:10,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:34:10,683 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:34:10,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:34:10,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:34:10,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:34:10,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:34:10,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:34:10,720 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:34:10,725 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:34:10,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:34:10,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:34:10,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:34:10,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:34:10,728 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:34:10,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:34:10,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:34:10,728 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:34:10,729 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:34:10,729 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:34:10,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:34:10,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:34:10,730 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:34:10,730 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:34:10,730 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:34:10,730 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:34:10,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:34:10,731 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:34:10,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:34:10,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:34:10,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:34:10,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:34:10,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:34:10,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:34:10,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:34:10,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:34:10,733 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:34:10,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:34:10,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:34:10,734 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:34:10,734 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:34:10,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:34:10,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:34:10,735 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:34:10,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:34:10,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:34:10,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:34:10,995 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:34:10,996 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:34:10,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 00:34:11,114 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:34:11,114 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:34:11,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:34:12,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:34:12,384 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:34:12,384 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:34:12,396 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6b69a0f0/ff668be3e47c44a48c4609a8c521b7bc/FLAG476bb71d4 [2024-06-28 00:34:12,406 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6b69a0f0/ff668be3e47c44a48c4609a8c521b7bc [2024-06-28 00:34:12,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:34:12,407 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:34:12,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:34:12,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:34:12,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:34:12,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:34:11" (1/2) ... [2024-06-28 00:34:12,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663642ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:34:12, skipping insertion in model container [2024-06-28 00:34:12,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:34:11" (1/2) ... [2024-06-28 00:34:12,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6351494f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:34:12, skipping insertion in model container [2024-06-28 00:34:12,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:34:12" (2/2) ... [2024-06-28 00:34:12,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663642ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:12, skipping insertion in model container [2024-06-28 00:34:12,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:34:12" (2/2) ... [2024-06-28 00:34:12,416 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:34:12,433 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:34:12,434 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_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_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (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$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (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_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$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_buff0_thd3 >= 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$r_buff0_thd1 + (long long )y$r_buff1_thd3 >= 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$r_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$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$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$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$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )y$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$r_buff0_thd3 >= 0LL) && (long long )y$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$r_buff1_thd3 >= 0LL) && (long long )y$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$w_buff1_used >= 0LL) [2024-06-28 00:34:12,434 INFO L97 edCorrectnessWitness]: Location invariant before [L833-L833] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y$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$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$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$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$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$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_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$r_buff0_thd3 >= 0LL) && (long long )y$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$r_buff1_thd3 >= 0LL) && (long long )y$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_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (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$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (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$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )y$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$r_buff0_thd3 >= 0LL) && (long long )y$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$r_buff1_thd3 >= 0LL) && (long long )y$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$w_buff1_used >= 0LL) [2024-06-28 00:34:12,434 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y$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$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$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$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$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$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_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$r_buff0_thd3 >= 0LL) && (long long )y$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$r_buff1_thd3 >= 0LL) && (long long )y$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_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (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$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (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$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )y$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$r_buff0_thd3 >= 0LL) && (long long )y$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$r_buff1_thd3 >= 0LL) && (long long )y$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) [2024-06-28 00:34:12,434 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:34:12,435 INFO L106 edCorrectnessWitness]: ghost_update [L829-L829] multithreaded = 1; [2024-06-28 00:34:12,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:34:12,757 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:34:12,772 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:34:12,975 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:34:13,016 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:34:13,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13 WrapperNode [2024-06-28 00:34:13,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:34:13,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:34:13,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:34:13,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:34:13,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,113 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 124 [2024-06-28 00:34:13,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:34:13,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:34:13,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:34:13,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:34:13,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,161 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:34:13,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:34:13,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:34:13,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:34:13,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:34:13,263 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (1/1) ... [2024-06-28 00:34:13,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:34:13,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:34:13,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:34:13,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:34:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:34:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:34:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:34:13,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:34:13,321 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:34:13,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:34:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:34:13,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:34:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:34:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:34:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:34:13,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:34:13,323 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:34:13,412 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:34:13,414 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:34:13,862 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:34:13,863 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:34:14,013 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:34:14,013 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:34:14,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:34:14 BoogieIcfgContainer [2024-06-28 00:34:14,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:34:14,017 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:34:14,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:34:14,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:34:14,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:34:11" (1/4) ... [2024-06-28 00:34:14,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451e7762 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:34:14, skipping insertion in model container [2024-06-28 00:34:14,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:34:12" (2/4) ... [2024-06-28 00:34:14,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451e7762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:34:14, skipping insertion in model container [2024-06-28 00:34:14,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:34:13" (3/4) ... [2024-06-28 00:34:14,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451e7762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:34:14, skipping insertion in model container [2024-06-28 00:34:14,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:34:14" (4/4) ... [2024-06-28 00:34:14,023 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:34:14,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:34:14,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:34:14,036 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:34:14,095 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:34:14,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 39 transitions, 90 flow [2024-06-28 00:34:14,154 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2024-06-28 00:34:14,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:34:14,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 0/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:34:14,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 39 transitions, 90 flow [2024-06-28 00:34:14,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 30 transitions, 69 flow [2024-06-28 00:34:14,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:34:14,177 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;@60ba0411, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:34:14,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:34:14,183 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:34:14,183 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:34:14,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:34:14,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:14,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:34:14,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:14,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:14,191 INFO L85 PathProgramCache]: Analyzing trace with hash 367548594, now seen corresponding path program 1 times [2024-06-28 00:34:14,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:14,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400220734] [2024-06-28 00:34:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:14,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:15,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:15,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400220734] [2024-06-28 00:34:15,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400220734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:15,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:15,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:34:15,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632302245] [2024-06-28 00:34:15,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:15,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:34:15,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:15,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:34:15,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:34:15,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-28 00:34:15,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:15,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:15,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-28 00:34:15,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:15,879 INFO L124 PetriNetUnfolderBase]: 1150/1745 cut-off events. [2024-06-28 00:34:15,879 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-28 00:34:15,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 1745 events. 1150/1745 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8071 event pairs, 639 based on Foata normal form. 3/1711 useless extension candidates. Maximal degree in co-relation 3552. Up to 1726 conditions per place. [2024-06-28 00:34:15,890 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 33 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-28 00:34:15,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 173 flow [2024-06-28 00:34:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:34:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:34:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-28 00:34:15,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6239316239316239 [2024-06-28 00:34:15,900 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 69 flow. Second operand 3 states and 73 transitions. [2024-06-28 00:34:15,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 173 flow [2024-06-28 00:34:15,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:34:15,904 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 96 flow [2024-06-28 00:34:15,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-06-28 00:34:15,907 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-06-28 00:34:15,907 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 96 flow [2024-06-28 00:34:15,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:15,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:15,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:15,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:34:15,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:15,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:15,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1026900689, now seen corresponding path program 1 times [2024-06-28 00:34:15,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:15,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980737549] [2024-06-28 00:34:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:15,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980737549] [2024-06-28 00:34:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980737549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:34:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362744506] [2024-06-28 00:34:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:16,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:34:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:34:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:34:16,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-28 00:34:16,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:16,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:16,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-28 00:34:16,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:17,019 INFO L124 PetriNetUnfolderBase]: 1146/1739 cut-off events. [2024-06-28 00:34:17,020 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2024-06-28 00:34:17,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4046 conditions, 1739 events. 1146/1739 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7970 event pairs, 560 based on Foata normal form. 5/1742 useless extension candidates. Maximal degree in co-relation 4034. Up to 1700 conditions per place. [2024-06-28 00:34:17,027 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 44 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-28 00:34:17,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 262 flow [2024-06-28 00:34:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:34:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:34:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-28 00:34:17,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2024-06-28 00:34:17,029 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 96 flow. Second operand 4 states and 95 transitions. [2024-06-28 00:34:17,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 262 flow [2024-06-28 00:34:17,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:34:17,031 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 152 flow [2024-06-28 00:34:17,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-28 00:34:17,032 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-06-28 00:34:17,032 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 152 flow [2024-06-28 00:34:17,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:17,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:17,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:17,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:34:17,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:17,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1769150977, now seen corresponding path program 1 times [2024-06-28 00:34:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:17,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695305698] [2024-06-28 00:34:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:17,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:17,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:17,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695305698] [2024-06-28 00:34:17,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695305698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:17,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:17,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:34:17,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013029466] [2024-06-28 00:34:17,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:17,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:34:17,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:34:17,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:34:17,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 00:34:17,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:17,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:17,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 00:34:17,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:18,216 INFO L124 PetriNetUnfolderBase]: 1401/2107 cut-off events. [2024-06-28 00:34:18,217 INFO L125 PetriNetUnfolderBase]: For 1058/1058 co-relation queries the response was YES. [2024-06-28 00:34:18,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5515 conditions, 2107 events. 1401/2107 cut-off events. For 1058/1058 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9354 event pairs, 623 based on Foata normal form. 7/2113 useless extension candidates. Maximal degree in co-relation 5500. Up to 1969 conditions per place. [2024-06-28 00:34:18,227 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 63 selfloop transitions, 14 changer transitions 0/81 dead transitions. [2024-06-28 00:34:18,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 445 flow [2024-06-28 00:34:18,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:34:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:34:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 00:34:18,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6102564102564103 [2024-06-28 00:34:18,229 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 152 flow. Second operand 5 states and 119 transitions. [2024-06-28 00:34:18,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 445 flow [2024-06-28 00:34:18,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 81 transitions, 430 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 00:34:18,233 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 255 flow [2024-06-28 00:34:18,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2024-06-28 00:34:18,233 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-06-28 00:34:18,234 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 255 flow [2024-06-28 00:34:18,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:18,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:18,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:18,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:34:18,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:18,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:18,235 INFO L85 PathProgramCache]: Analyzing trace with hash -990893840, now seen corresponding path program 1 times [2024-06-28 00:34:18,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:18,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91454163] [2024-06-28 00:34:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:18,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:19,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:19,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91454163] [2024-06-28 00:34:19,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91454163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:19,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:19,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:34:19,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710575703] [2024-06-28 00:34:19,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:19,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:34:19,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:34:19,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:34:19,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 00:34:19,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:19,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:19,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 00:34:19,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:19,947 INFO L124 PetriNetUnfolderBase]: 1423/2141 cut-off events. [2024-06-28 00:34:19,948 INFO L125 PetriNetUnfolderBase]: For 2512/2514 co-relation queries the response was YES. [2024-06-28 00:34:19,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6730 conditions, 2141 events. 1423/2141 cut-off events. For 2512/2514 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9548 event pairs, 432 based on Foata normal form. 7/2147 useless extension candidates. Maximal degree in co-relation 6711. Up to 1912 conditions per place. [2024-06-28 00:34:19,960 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 74 selfloop transitions, 26 changer transitions 0/104 dead transitions. [2024-06-28 00:34:19,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 104 transitions, 655 flow [2024-06-28 00:34:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:34:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:34:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 00:34:19,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-28 00:34:19,962 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 255 flow. Second operand 6 states and 144 transitions. [2024-06-28 00:34:19,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 104 transitions, 655 flow [2024-06-28 00:34:19,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 104 transitions, 651 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 00:34:19,967 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 416 flow [2024-06-28 00:34:19,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=416, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2024-06-28 00:34:19,968 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2024-06-28 00:34:19,968 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 416 flow [2024-06-28 00:34:19,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:19,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:19,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:19,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:34:19,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:19,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:19,969 INFO L85 PathProgramCache]: Analyzing trace with hash -652937216, now seen corresponding path program 1 times [2024-06-28 00:34:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:19,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222378677] [2024-06-28 00:34:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:19,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:21,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:21,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222378677] [2024-06-28 00:34:21,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222378677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:21,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:21,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:34:21,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25389967] [2024-06-28 00:34:21,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:21,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:34:21,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:21,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:34:21,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:34:21,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 00:34:21,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 416 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:21,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:21,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 00:34:21,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:21,846 INFO L124 PetriNetUnfolderBase]: 1505/2287 cut-off events. [2024-06-28 00:34:21,847 INFO L125 PetriNetUnfolderBase]: For 4961/4967 co-relation queries the response was YES. [2024-06-28 00:34:21,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8366 conditions, 2287 events. 1505/2287 cut-off events. For 4961/4967 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10562 event pairs, 304 based on Foata normal form. 28/2314 useless extension candidates. Maximal degree in co-relation 8341. Up to 1876 conditions per place. [2024-06-28 00:34:21,861 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 82 selfloop transitions, 28 changer transitions 0/114 dead transitions. [2024-06-28 00:34:21,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 114 transitions, 824 flow [2024-06-28 00:34:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 00:34:21,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6007326007326007 [2024-06-28 00:34:21,863 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 416 flow. Second operand 7 states and 164 transitions. [2024-06-28 00:34:21,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 114 transitions, 824 flow [2024-06-28 00:34:21,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 114 transitions, 814 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 00:34:21,870 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 480 flow [2024-06-28 00:34:21,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2024-06-28 00:34:21,871 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2024-06-28 00:34:21,871 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 480 flow [2024-06-28 00:34:21,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:21,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:21,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:21,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:34:21,872 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:21,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:21,872 INFO L85 PathProgramCache]: Analyzing trace with hash -866148101, now seen corresponding path program 1 times [2024-06-28 00:34:21,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:21,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581190093] [2024-06-28 00:34:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:21,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:23,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:23,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581190093] [2024-06-28 00:34:23,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581190093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:23,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:23,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:34:23,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770057494] [2024-06-28 00:34:23,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:23,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:34:23,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:23,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:34:23,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:34:23,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:23,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 480 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:23,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:23,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:23,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:23,600 INFO L124 PetriNetUnfolderBase]: 1495/2271 cut-off events. [2024-06-28 00:34:23,601 INFO L125 PetriNetUnfolderBase]: For 6269/6269 co-relation queries the response was YES. [2024-06-28 00:34:23,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8880 conditions, 2271 events. 1495/2271 cut-off events. For 6269/6269 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10398 event pairs, 531 based on Foata normal form. 4/2274 useless extension candidates. Maximal degree in co-relation 8851. Up to 2241 conditions per place. [2024-06-28 00:34:23,617 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 65 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-06-28 00:34:23,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 696 flow [2024-06-28 00:34:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:34:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:34:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-28 00:34:23,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-06-28 00:34:23,618 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 480 flow. Second operand 5 states and 87 transitions. [2024-06-28 00:34:23,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 696 flow [2024-06-28 00:34:23,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 634 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:34:23,625 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 501 flow [2024-06-28 00:34:23,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=501, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-06-28 00:34:23,625 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2024-06-28 00:34:23,626 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 501 flow [2024-06-28 00:34:23,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:23,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:23,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:23,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:34:23,626 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:23,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:23,627 INFO L85 PathProgramCache]: Analyzing trace with hash 305369400, now seen corresponding path program 1 times [2024-06-28 00:34:23,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:23,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081724912] [2024-06-28 00:34:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:23,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:24,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081724912] [2024-06-28 00:34:24,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081724912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:24,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:24,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:34:24,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823609756] [2024-06-28 00:34:24,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:24,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:34:24,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:24,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:34:24,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:34:24,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:24,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 501 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:24,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:24,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:24,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:25,269 INFO L124 PetriNetUnfolderBase]: 1623/2470 cut-off events. [2024-06-28 00:34:25,270 INFO L125 PetriNetUnfolderBase]: For 7768/7770 co-relation queries the response was YES. [2024-06-28 00:34:25,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9847 conditions, 2470 events. 1623/2470 cut-off events. For 7768/7770 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11346 event pairs, 504 based on Foata normal form. 10/2479 useless extension candidates. Maximal degree in co-relation 9813. Up to 2317 conditions per place. [2024-06-28 00:34:25,293 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 79 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2024-06-28 00:34:25,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 102 transitions, 890 flow [2024-06-28 00:34:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:34:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:34:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 00:34:25,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700854700854701 [2024-06-28 00:34:25,295 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 501 flow. Second operand 6 states and 110 transitions. [2024-06-28 00:34:25,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 102 transitions, 890 flow [2024-06-28 00:34:25,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 872 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:34:25,306 INFO L231 Difference]: Finished difference. Result has 72 places, 81 transitions, 652 flow [2024-06-28 00:34:25,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=72, PETRI_TRANSITIONS=81} [2024-06-28 00:34:25,307 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 32 predicate places. [2024-06-28 00:34:25,308 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 81 transitions, 652 flow [2024-06-28 00:34:25,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:25,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:25,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:25,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:34:25,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:25,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash 829143766, now seen corresponding path program 2 times [2024-06-28 00:34:25,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:25,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123008720] [2024-06-28 00:34:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:25,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:26,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:26,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123008720] [2024-06-28 00:34:26,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123008720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:26,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:26,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:34:26,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509817666] [2024-06-28 00:34:26,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:26,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:34:26,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:26,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:34:26,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:34:26,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:26,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 81 transitions, 652 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:26,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:26,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:26,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:26,917 INFO L124 PetriNetUnfolderBase]: 1607/2443 cut-off events. [2024-06-28 00:34:26,917 INFO L125 PetriNetUnfolderBase]: For 9219/9219 co-relation queries the response was YES. [2024-06-28 00:34:26,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10181 conditions, 2443 events. 1607/2443 cut-off events. For 9219/9219 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11245 event pairs, 546 based on Foata normal form. 4/2446 useless extension candidates. Maximal degree in co-relation 10144. Up to 2396 conditions per place. [2024-06-28 00:34:26,931 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 82 selfloop transitions, 13 changer transitions 0/98 dead transitions. [2024-06-28 00:34:26,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 98 transitions, 907 flow [2024-06-28 00:34:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:34:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:34:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-28 00:34:26,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 00:34:26,934 INFO L175 Difference]: Start difference. First operand has 72 places, 81 transitions, 652 flow. Second operand 6 states and 102 transitions. [2024-06-28 00:34:26,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 98 transitions, 907 flow [2024-06-28 00:34:26,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 895 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:34:26,948 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 703 flow [2024-06-28 00:34:26,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=703, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2024-06-28 00:34:26,950 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-06-28 00:34:26,950 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 703 flow [2024-06-28 00:34:26,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:26,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:26,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:26,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:34:26,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:26,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash -679792068, now seen corresponding path program 3 times [2024-06-28 00:34:26,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:26,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352267179] [2024-06-28 00:34:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:26,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:28,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:28,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352267179] [2024-06-28 00:34:28,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352267179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:28,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:28,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:34:28,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823192606] [2024-06-28 00:34:28,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:28,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:34:28,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:28,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:34:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:34:28,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:28,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 703 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:28,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:28,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:28,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:28,930 INFO L124 PetriNetUnfolderBase]: 1643/2495 cut-off events. [2024-06-28 00:34:28,930 INFO L125 PetriNetUnfolderBase]: For 11299/11301 co-relation queries the response was YES. [2024-06-28 00:34:28,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10751 conditions, 2495 events. 1643/2495 cut-off events. For 11299/11301 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11483 event pairs, 473 based on Foata normal form. 6/2500 useless extension candidates. Maximal degree in co-relation 10712. Up to 2314 conditions per place. [2024-06-28 00:34:28,945 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 96 selfloop transitions, 38 changer transitions 0/137 dead transitions. [2024-06-28 00:34:28,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 137 transitions, 1390 flow [2024-06-28 00:34:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:34:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:34:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-28 00:34:28,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 00:34:28,949 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 703 flow. Second operand 6 states and 117 transitions. [2024-06-28 00:34:28,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 137 transitions, 1390 flow [2024-06-28 00:34:28,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 137 transitions, 1350 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:34:28,963 INFO L231 Difference]: Finished difference. Result has 80 places, 112 transitions, 1120 flow [2024-06-28 00:34:28,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1120, PETRI_PLACES=80, PETRI_TRANSITIONS=112} [2024-06-28 00:34:28,964 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 40 predicate places. [2024-06-28 00:34:28,964 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 112 transitions, 1120 flow [2024-06-28 00:34:28,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:28,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:28,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:28,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:34:28,965 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:28,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash 855372826, now seen corresponding path program 1 times [2024-06-28 00:34:28,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:28,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569575184] [2024-06-28 00:34:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:28,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:30,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:30,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569575184] [2024-06-28 00:34:30,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569575184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:30,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:30,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:34:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032723424] [2024-06-28 00:34:30,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:30,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:34:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:34:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:34:30,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:30,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 112 transitions, 1120 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:30,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:30,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:30,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:31,298 INFO L124 PetriNetUnfolderBase]: 1635/2483 cut-off events. [2024-06-28 00:34:31,298 INFO L125 PetriNetUnfolderBase]: For 13481/13481 co-relation queries the response was YES. [2024-06-28 00:34:31,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11411 conditions, 2483 events. 1635/2483 cut-off events. For 13481/13481 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11447 event pairs, 491 based on Foata normal form. 4/2486 useless extension candidates. Maximal degree in co-relation 11370. Up to 2423 conditions per place. [2024-06-28 00:34:31,314 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 112 selfloop transitions, 14 changer transitions 0/129 dead transitions. [2024-06-28 00:34:31,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 1432 flow [2024-06-28 00:34:31,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 00:34:31,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40293040293040294 [2024-06-28 00:34:31,316 INFO L175 Difference]: Start difference. First operand has 80 places, 112 transitions, 1120 flow. Second operand 7 states and 110 transitions. [2024-06-28 00:34:31,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 1432 flow [2024-06-28 00:34:31,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 129 transitions, 1413 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 00:34:31,336 INFO L231 Difference]: Finished difference. Result has 86 places, 114 transitions, 1156 flow [2024-06-28 00:34:31,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1156, PETRI_PLACES=86, PETRI_TRANSITIONS=114} [2024-06-28 00:34:31,338 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2024-06-28 00:34:31,339 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 114 transitions, 1156 flow [2024-06-28 00:34:31,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:31,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:31,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:31,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:34:31,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:31,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:31,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1053886804, now seen corresponding path program 1 times [2024-06-28 00:34:31,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:31,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559415785] [2024-06-28 00:34:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:31,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:32,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:32,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559415785] [2024-06-28 00:34:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559415785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:32,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:34:32,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689615146] [2024-06-28 00:34:32,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:32,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:34:32,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:32,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:34:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:34:32,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:32,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 114 transitions, 1156 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:32,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:32,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:32,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:33,290 INFO L124 PetriNetUnfolderBase]: 1630/2476 cut-off events. [2024-06-28 00:34:33,290 INFO L125 PetriNetUnfolderBase]: For 15114/15114 co-relation queries the response was YES. [2024-06-28 00:34:33,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11660 conditions, 2476 events. 1630/2476 cut-off events. For 15114/15114 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11362 event pairs, 504 based on Foata normal form. 2/2477 useless extension candidates. Maximal degree in co-relation 11616. Up to 2402 conditions per place. [2024-06-28 00:34:33,307 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 111 selfloop transitions, 21 changer transitions 0/135 dead transitions. [2024-06-28 00:34:33,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 135 transitions, 1490 flow [2024-06-28 00:34:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 00:34:33,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 00:34:33,309 INFO L175 Difference]: Start difference. First operand has 86 places, 114 transitions, 1156 flow. Second operand 7 states and 117 transitions. [2024-06-28 00:34:33,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 135 transitions, 1490 flow [2024-06-28 00:34:33,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 135 transitions, 1447 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:34:33,330 INFO L231 Difference]: Finished difference. Result has 88 places, 114 transitions, 1169 flow [2024-06-28 00:34:33,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1169, PETRI_PLACES=88, PETRI_TRANSITIONS=114} [2024-06-28 00:34:33,331 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-06-28 00:34:33,331 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 1169 flow [2024-06-28 00:34:33,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:33,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:33,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:33,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:34:33,332 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:33,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:33,332 INFO L85 PathProgramCache]: Analyzing trace with hash 401283698, now seen corresponding path program 2 times [2024-06-28 00:34:33,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:33,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434498351] [2024-06-28 00:34:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:33,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:34,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:34,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434498351] [2024-06-28 00:34:34,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434498351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:34,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:34,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:34:34,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307262306] [2024-06-28 00:34:34,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:34,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:34:34,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:34,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:34:34,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:34:34,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:34,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 1169 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:34,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:34,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:34,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:35,443 INFO L124 PetriNetUnfolderBase]: 1659/2517 cut-off events. [2024-06-28 00:34:35,443 INFO L125 PetriNetUnfolderBase]: For 17279/17281 co-relation queries the response was YES. [2024-06-28 00:34:35,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12154 conditions, 2517 events. 1659/2517 cut-off events. For 17279/17281 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11616 event pairs, 484 based on Foata normal form. 6/2522 useless extension candidates. Maximal degree in co-relation 12110. Up to 2219 conditions per place. [2024-06-28 00:34:35,460 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 83 selfloop transitions, 64 changer transitions 0/150 dead transitions. [2024-06-28 00:34:35,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 150 transitions, 1732 flow [2024-06-28 00:34:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 00:34:35,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2024-06-28 00:34:35,462 INFO L175 Difference]: Start difference. First operand has 88 places, 114 transitions, 1169 flow. Second operand 7 states and 128 transitions. [2024-06-28 00:34:35,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 150 transitions, 1732 flow [2024-06-28 00:34:35,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 1644 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:34:35,485 INFO L231 Difference]: Finished difference. Result has 91 places, 127 transitions, 1426 flow [2024-06-28 00:34:35,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1426, PETRI_PLACES=91, PETRI_TRANSITIONS=127} [2024-06-28 00:34:35,486 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 51 predicate places. [2024-06-28 00:34:35,486 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 127 transitions, 1426 flow [2024-06-28 00:34:35,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:35,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:35,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:35,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:34:35,486 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:35,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1398444503, now seen corresponding path program 1 times [2024-06-28 00:34:35,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:35,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482839444] [2024-06-28 00:34:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:35,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:37,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:37,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482839444] [2024-06-28 00:34:37,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482839444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:37,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:37,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:34:37,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766099007] [2024-06-28 00:34:37,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:37,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:34:37,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:37,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:34:37,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:34:37,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:37,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 127 transitions, 1426 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) [2024-06-28 00:34:37,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:37,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:37,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:37,613 INFO L124 PetriNetUnfolderBase]: 1747/2653 cut-off events. [2024-06-28 00:34:37,614 INFO L125 PetriNetUnfolderBase]: For 20520/20524 co-relation queries the response was YES. [2024-06-28 00:34:37,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13231 conditions, 2653 events. 1747/2653 cut-off events. For 20520/20524 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12290 event pairs, 476 based on Foata normal form. 8/2660 useless extension candidates. Maximal degree in co-relation 13185. Up to 2396 conditions per place. [2024-06-28 00:34:37,629 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 122 selfloop transitions, 43 changer transitions 0/168 dead transitions. [2024-06-28 00:34:37,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 168 transitions, 2057 flow [2024-06-28 00:34:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 00:34:37,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 00:34:37,631 INFO L175 Difference]: Start difference. First operand has 91 places, 127 transitions, 1426 flow. Second operand 7 states and 130 transitions. [2024-06-28 00:34:37,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 168 transitions, 2057 flow [2024-06-28 00:34:37,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 168 transitions, 1986 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 00:34:37,656 INFO L231 Difference]: Finished difference. Result has 98 places, 139 transitions, 1589 flow [2024-06-28 00:34:37,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1589, PETRI_PLACES=98, PETRI_TRANSITIONS=139} [2024-06-28 00:34:37,657 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2024-06-28 00:34:37,657 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 139 transitions, 1589 flow [2024-06-28 00:34:37,657 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) [2024-06-28 00:34:37,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:37,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:37,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:34:37,658 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:37,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:37,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1398534713, now seen corresponding path program 2 times [2024-06-28 00:34:37,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:37,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536823941] [2024-06-28 00:34:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:37,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:39,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:39,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536823941] [2024-06-28 00:34:39,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536823941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:39,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:39,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:34:39,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107853305] [2024-06-28 00:34:39,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:39,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:34:39,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:34:39,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:34:39,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:39,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 139 transitions, 1589 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) [2024-06-28 00:34:39,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:39,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:39,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:39,837 INFO L124 PetriNetUnfolderBase]: 1737/2641 cut-off events. [2024-06-28 00:34:39,837 INFO L125 PetriNetUnfolderBase]: For 21474/21478 co-relation queries the response was YES. [2024-06-28 00:34:39,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13669 conditions, 2641 events. 1737/2641 cut-off events. For 21474/21478 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12277 event pairs, 485 based on Foata normal form. 8/2648 useless extension candidates. Maximal degree in co-relation 13619. Up to 2448 conditions per place. [2024-06-28 00:34:39,854 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 119 selfloop transitions, 44 changer transitions 0/166 dead transitions. [2024-06-28 00:34:39,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 166 transitions, 2097 flow [2024-06-28 00:34:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 00:34:39,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 00:34:39,856 INFO L175 Difference]: Start difference. First operand has 98 places, 139 transitions, 1589 flow. Second operand 7 states and 126 transitions. [2024-06-28 00:34:39,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 166 transitions, 2097 flow [2024-06-28 00:34:39,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 166 transitions, 2062 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 00:34:39,887 INFO L231 Difference]: Finished difference. Result has 104 places, 142 transitions, 1700 flow [2024-06-28 00:34:39,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1700, PETRI_PLACES=104, PETRI_TRANSITIONS=142} [2024-06-28 00:34:39,887 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 64 predicate places. [2024-06-28 00:34:39,887 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 142 transitions, 1700 flow [2024-06-28 00:34:39,888 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) [2024-06-28 00:34:39,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:39,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:39,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:34:39,888 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:39,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:39,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1402259735, now seen corresponding path program 1 times [2024-06-28 00:34:39,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:39,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136654881] [2024-06-28 00:34:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:39,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:41,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:41,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136654881] [2024-06-28 00:34:41,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136654881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:41,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:41,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:34:41,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037030596] [2024-06-28 00:34:41,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:41,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:34:41,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:41,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:34:41,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:34:41,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:41,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 142 transitions, 1700 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:41,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:41,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:41,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:42,313 INFO L124 PetriNetUnfolderBase]: 1771/2694 cut-off events. [2024-06-28 00:34:42,314 INFO L125 PetriNetUnfolderBase]: For 24833/24835 co-relation queries the response was YES. [2024-06-28 00:34:42,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14287 conditions, 2694 events. 1771/2694 cut-off events. For 24833/24835 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12604 event pairs, 477 based on Foata normal form. 10/2703 useless extension candidates. Maximal degree in co-relation 14234. Up to 2422 conditions per place. [2024-06-28 00:34:42,342 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 110 selfloop transitions, 53 changer transitions 0/166 dead transitions. [2024-06-28 00:34:42,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 166 transitions, 2135 flow [2024-06-28 00:34:42,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 00:34:42,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542124542124542 [2024-06-28 00:34:42,344 INFO L175 Difference]: Start difference. First operand has 104 places, 142 transitions, 1700 flow. Second operand 7 states and 124 transitions. [2024-06-28 00:34:42,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 166 transitions, 2135 flow [2024-06-28 00:34:42,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 166 transitions, 2059 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:34:42,382 INFO L231 Difference]: Finished difference. Result has 107 places, 145 transitions, 1772 flow [2024-06-28 00:34:42,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1772, PETRI_PLACES=107, PETRI_TRANSITIONS=145} [2024-06-28 00:34:42,383 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 67 predicate places. [2024-06-28 00:34:42,383 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 145 transitions, 1772 flow [2024-06-28 00:34:42,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:42,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:42,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:42,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:34:42,383 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:42,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:42,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1666948217, now seen corresponding path program 2 times [2024-06-28 00:34:42,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:42,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765542093] [2024-06-28 00:34:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:42,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:44,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:44,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765542093] [2024-06-28 00:34:44,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765542093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:44,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:44,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:34:44,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740588066] [2024-06-28 00:34:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:34:44,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:34:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:34:44,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:44,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 145 transitions, 1772 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:44,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:44,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:44,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:44,678 INFO L124 PetriNetUnfolderBase]: 1788/2714 cut-off events. [2024-06-28 00:34:44,678 INFO L125 PetriNetUnfolderBase]: For 27622/27622 co-relation queries the response was YES. [2024-06-28 00:34:44,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14881 conditions, 2714 events. 1788/2714 cut-off events. For 27622/27622 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12661 event pairs, 495 based on Foata normal form. 4/2717 useless extension candidates. Maximal degree in co-relation 14827. Up to 2633 conditions per place. [2024-06-28 00:34:44,697 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 147 selfloop transitions, 19 changer transitions 0/169 dead transitions. [2024-06-28 00:34:44,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 169 transitions, 2218 flow [2024-06-28 00:34:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 00:34:44,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 00:34:44,698 INFO L175 Difference]: Start difference. First operand has 107 places, 145 transitions, 1772 flow. Second operand 7 states and 117 transitions. [2024-06-28 00:34:44,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 169 transitions, 2218 flow [2024-06-28 00:34:44,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 169 transitions, 2098 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:34:44,740 INFO L231 Difference]: Finished difference. Result has 109 places, 147 transitions, 1726 flow [2024-06-28 00:34:44,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1726, PETRI_PLACES=109, PETRI_TRANSITIONS=147} [2024-06-28 00:34:44,740 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2024-06-28 00:34:44,741 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 147 transitions, 1726 flow [2024-06-28 00:34:44,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:44,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:44,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:44,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:34:44,741 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:44,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1688979177, now seen corresponding path program 3 times [2024-06-28 00:34:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:44,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431350031] [2024-06-28 00:34:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:44,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:46,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:46,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431350031] [2024-06-28 00:34:46,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431350031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:46,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:46,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:34:46,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69810762] [2024-06-28 00:34:46,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:46,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:34:46,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:34:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:34:46,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:46,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 147 transitions, 1726 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:46,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:46,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:46,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:46,751 INFO L124 PetriNetUnfolderBase]: 1805/2740 cut-off events. [2024-06-28 00:34:46,751 INFO L125 PetriNetUnfolderBase]: For 30080/30080 co-relation queries the response was YES. [2024-06-28 00:34:46,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15129 conditions, 2740 events. 1805/2740 cut-off events. For 30080/30080 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12849 event pairs, 482 based on Foata normal form. 4/2743 useless extension candidates. Maximal degree in co-relation 15074. Up to 2656 conditions per place. [2024-06-28 00:34:46,768 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 153 selfloop transitions, 17 changer transitions 0/173 dead transitions. [2024-06-28 00:34:46,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 173 transitions, 2174 flow [2024-06-28 00:34:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:34:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:34:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 00:34:46,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396011396011396 [2024-06-28 00:34:46,769 INFO L175 Difference]: Start difference. First operand has 109 places, 147 transitions, 1726 flow. Second operand 9 states and 139 transitions. [2024-06-28 00:34:46,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 173 transitions, 2174 flow [2024-06-28 00:34:46,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 173 transitions, 2120 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:34:46,808 INFO L231 Difference]: Finished difference. Result has 113 places, 149 transitions, 1745 flow [2024-06-28 00:34:46,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1745, PETRI_PLACES=113, PETRI_TRANSITIONS=149} [2024-06-28 00:34:46,809 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 73 predicate places. [2024-06-28 00:34:46,809 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 149 transitions, 1745 flow [2024-06-28 00:34:46,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:46,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:46,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:46,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:34:46,809 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:46,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1689246087, now seen corresponding path program 4 times [2024-06-28 00:34:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:46,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56108405] [2024-06-28 00:34:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:48,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:48,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56108405] [2024-06-28 00:34:48,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56108405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:48,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:48,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:34:48,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751736506] [2024-06-28 00:34:48,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:48,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:34:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:48,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:34:48,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:34:48,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:48,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 149 transitions, 1745 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:48,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:48,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:48,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:49,136 INFO L124 PetriNetUnfolderBase]: 1822/2768 cut-off events. [2024-06-28 00:34:49,136 INFO L125 PetriNetUnfolderBase]: For 33393/33393 co-relation queries the response was YES. [2024-06-28 00:34:49,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15547 conditions, 2768 events. 1822/2768 cut-off events. For 33393/33393 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12982 event pairs, 508 based on Foata normal form. 4/2771 useless extension candidates. Maximal degree in co-relation 15491. Up to 2651 conditions per place. [2024-06-28 00:34:49,157 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 145 selfloop transitions, 26 changer transitions 0/174 dead transitions. [2024-06-28 00:34:49,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 174 transitions, 2215 flow [2024-06-28 00:34:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 00:34:49,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43223443223443225 [2024-06-28 00:34:49,161 INFO L175 Difference]: Start difference. First operand has 113 places, 149 transitions, 1745 flow. Second operand 7 states and 118 transitions. [2024-06-28 00:34:49,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 174 transitions, 2215 flow [2024-06-28 00:34:49,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 174 transitions, 2149 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:34:49,202 INFO L231 Difference]: Finished difference. Result has 112 places, 151 transitions, 1778 flow [2024-06-28 00:34:49,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1778, PETRI_PLACES=112, PETRI_TRANSITIONS=151} [2024-06-28 00:34:49,203 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 72 predicate places. [2024-06-28 00:34:49,203 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 151 transitions, 1778 flow [2024-06-28 00:34:49,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:49,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:49,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:49,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:34:49,204 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:49,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1689246304, now seen corresponding path program 1 times [2024-06-28 00:34:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:49,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330425634] [2024-06-28 00:34:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:49,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:50,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:50,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330425634] [2024-06-28 00:34:50,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330425634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:50,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:50,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:34:50,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250795447] [2024-06-28 00:34:50,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:50,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:34:50,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:34:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:34:50,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:50,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 151 transitions, 1778 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) [2024-06-28 00:34:50,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:50,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:50,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:51,095 INFO L124 PetriNetUnfolderBase]: 1802/2732 cut-off events. [2024-06-28 00:34:51,095 INFO L125 PetriNetUnfolderBase]: For 36178/36182 co-relation queries the response was YES. [2024-06-28 00:34:51,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15648 conditions, 2732 events. 1802/2732 cut-off events. For 36178/36182 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12720 event pairs, 502 based on Foata normal form. 6/2737 useless extension candidates. Maximal degree in co-relation 15593. Up to 2484 conditions per place. [2024-06-28 00:34:51,111 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 114 selfloop transitions, 59 changer transitions 0/176 dead transitions. [2024-06-28 00:34:51,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 176 transitions, 2237 flow [2024-06-28 00:34:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 00:34:51,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542124542124542 [2024-06-28 00:34:51,113 INFO L175 Difference]: Start difference. First operand has 112 places, 151 transitions, 1778 flow. Second operand 7 states and 124 transitions. [2024-06-28 00:34:51,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 176 transitions, 2237 flow [2024-06-28 00:34:51,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 176 transitions, 2160 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 00:34:51,149 INFO L231 Difference]: Finished difference. Result has 115 places, 152 transitions, 1895 flow [2024-06-28 00:34:51,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1895, PETRI_PLACES=115, PETRI_TRANSITIONS=152} [2024-06-28 00:34:51,149 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 75 predicate places. [2024-06-28 00:34:51,149 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 152 transitions, 1895 flow [2024-06-28 00:34:51,149 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) [2024-06-28 00:34:51,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:51,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:51,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:34:51,150 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:51,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:51,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1454048249, now seen corresponding path program 3 times [2024-06-28 00:34:51,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:51,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695847634] [2024-06-28 00:34:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:51,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:52,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:52,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695847634] [2024-06-28 00:34:52,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695847634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:52,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:52,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:34:52,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370605419] [2024-06-28 00:34:52,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:52,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:34:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:52,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:34:52,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:34:52,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:34:52,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 152 transitions, 1895 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:52,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:52,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:34:52,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:53,384 INFO L124 PetriNetUnfolderBase]: 1824/2760 cut-off events. [2024-06-28 00:34:53,384 INFO L125 PetriNetUnfolderBase]: For 37070/37082 co-relation queries the response was YES. [2024-06-28 00:34:53,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15959 conditions, 2760 events. 1824/2760 cut-off events. For 37070/37082 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12824 event pairs, 470 based on Foata normal form. 12/2771 useless extension candidates. Maximal degree in co-relation 15902. Up to 2247 conditions per place. [2024-06-28 00:34:53,403 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 102 selfloop transitions, 80 changer transitions 0/185 dead transitions. [2024-06-28 00:34:53,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 185 transitions, 2487 flow [2024-06-28 00:34:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 00:34:53,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-06-28 00:34:53,405 INFO L175 Difference]: Start difference. First operand has 115 places, 152 transitions, 1895 flow. Second operand 7 states and 138 transitions. [2024-06-28 00:34:53,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 185 transitions, 2487 flow [2024-06-28 00:34:53,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 185 transitions, 2396 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 00:34:53,450 INFO L231 Difference]: Finished difference. Result has 117 places, 158 transitions, 2046 flow [2024-06-28 00:34:53,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2046, PETRI_PLACES=117, PETRI_TRANSITIONS=158} [2024-06-28 00:34:53,451 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 77 predicate places. [2024-06-28 00:34:53,451 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 158 transitions, 2046 flow [2024-06-28 00:34:53,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:53,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:53,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:53,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:34:53,451 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:53,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1453929209, now seen corresponding path program 4 times [2024-06-28 00:34:53,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:53,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453512345] [2024-06-28 00:34:53,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:53,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:54,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:54,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453512345] [2024-06-28 00:34:54,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453512345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:54,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:54,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:34:54,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062881713] [2024-06-28 00:34:54,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:54,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:34:54,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:54,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:34:54,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:34:54,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:34:54,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 158 transitions, 2046 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:54,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:54,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:34:54,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:55,303 INFO L124 PetriNetUnfolderBase]: 1814/2748 cut-off events. [2024-06-28 00:34:55,303 INFO L125 PetriNetUnfolderBase]: For 41028/41044 co-relation queries the response was YES. [2024-06-28 00:34:55,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16439 conditions, 2748 events. 1814/2748 cut-off events. For 41028/41044 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12746 event pairs, 457 based on Foata normal form. 16/2763 useless extension candidates. Maximal degree in co-relation 16381. Up to 2361 conditions per place. [2024-06-28 00:34:55,323 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 100 selfloop transitions, 78 changer transitions 0/181 dead transitions. [2024-06-28 00:34:55,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 181 transitions, 2492 flow [2024-06-28 00:34:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 00:34:55,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-28 00:34:55,325 INFO L175 Difference]: Start difference. First operand has 117 places, 158 transitions, 2046 flow. Second operand 7 states and 133 transitions. [2024-06-28 00:34:55,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 181 transitions, 2492 flow [2024-06-28 00:34:55,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 181 transitions, 2379 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 00:34:55,386 INFO L231 Difference]: Finished difference. Result has 120 places, 158 transitions, 2107 flow [2024-06-28 00:34:55,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2107, PETRI_PLACES=120, PETRI_TRANSITIONS=158} [2024-06-28 00:34:55,386 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 80 predicate places. [2024-06-28 00:34:55,386 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 158 transitions, 2107 flow [2024-06-28 00:34:55,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:34:55,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:55,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:55,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:34:55,387 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:55,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash -462980493, now seen corresponding path program 5 times [2024-06-28 00:34:55,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:55,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153158148] [2024-06-28 00:34:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:55,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:56,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:56,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153158148] [2024-06-28 00:34:56,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153158148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:56,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:56,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:34:56,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640921525] [2024-06-28 00:34:56,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:56,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:34:56,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:34:56,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:34:56,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:56,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 158 transitions, 2107 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) [2024-06-28 00:34:56,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:56,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:56,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:57,432 INFO L124 PetriNetUnfolderBase]: 1845/2794 cut-off events. [2024-06-28 00:34:57,432 INFO L125 PetriNetUnfolderBase]: For 40490/40504 co-relation queries the response was YES. [2024-06-28 00:34:57,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16526 conditions, 2794 events. 1845/2794 cut-off events. For 40490/40504 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13018 event pairs, 446 based on Foata normal form. 18/2811 useless extension candidates. Maximal degree in co-relation 16467. Up to 2439 conditions per place. [2024-06-28 00:34:57,452 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 122 selfloop transitions, 69 changer transitions 0/194 dead transitions. [2024-06-28 00:34:57,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 194 transitions, 2710 flow [2024-06-28 00:34:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:34:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:34:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 00:34:57,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2024-06-28 00:34:57,453 INFO L175 Difference]: Start difference. First operand has 120 places, 158 transitions, 2107 flow. Second operand 7 states and 136 transitions. [2024-06-28 00:34:57,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 194 transitions, 2710 flow [2024-06-28 00:34:57,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 194 transitions, 2566 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:34:57,506 INFO L231 Difference]: Finished difference. Result has 121 places, 164 transitions, 2179 flow [2024-06-28 00:34:57,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2179, PETRI_PLACES=121, PETRI_TRANSITIONS=164} [2024-06-28 00:34:57,506 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 81 predicate places. [2024-06-28 00:34:57,506 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 164 transitions, 2179 flow [2024-06-28 00:34:57,506 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) [2024-06-28 00:34:57,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:57,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:57,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:34:57,506 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:57,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash 402105045, now seen corresponding path program 1 times [2024-06-28 00:34:57,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:57,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411755479] [2024-06-28 00:34:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:57,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:34:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:34:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:34:59,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:34:59,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411755479] [2024-06-28 00:34:59,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411755479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:34:59,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:34:59,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:34:59,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283077151] [2024-06-28 00:34:59,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:34:59,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:34:59,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:34:59,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:34:59,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:34:59,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:34:59,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 164 transitions, 2179 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) [2024-06-28 00:34:59,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:34:59,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:34:59,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:34:59,909 INFO L124 PetriNetUnfolderBase]: 1991/3042 cut-off events. [2024-06-28 00:34:59,909 INFO L125 PetriNetUnfolderBase]: For 43548/43552 co-relation queries the response was YES. [2024-06-28 00:34:59,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17728 conditions, 3042 events. 1991/3042 cut-off events. For 43548/43552 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14696 event pairs, 498 based on Foata normal form. 8/3049 useless extension candidates. Maximal degree in co-relation 17670. Up to 2630 conditions per place. [2024-06-28 00:34:59,931 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 159 selfloop transitions, 49 changer transitions 0/211 dead transitions. [2024-06-28 00:34:59,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 211 transitions, 2930 flow [2024-06-28 00:34:59,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:34:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:34:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 00:34:59,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-28 00:34:59,933 INFO L175 Difference]: Start difference. First operand has 121 places, 164 transitions, 2179 flow. Second operand 8 states and 147 transitions. [2024-06-28 00:34:59,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 211 transitions, 2930 flow [2024-06-28 00:34:59,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 211 transitions, 2772 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 00:34:59,983 INFO L231 Difference]: Finished difference. Result has 126 places, 178 transitions, 2305 flow [2024-06-28 00:34:59,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2305, PETRI_PLACES=126, PETRI_TRANSITIONS=178} [2024-06-28 00:34:59,983 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 86 predicate places. [2024-06-28 00:34:59,983 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 178 transitions, 2305 flow [2024-06-28 00:34:59,984 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) [2024-06-28 00:34:59,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:34:59,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:34:59,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:34:59,984 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:34:59,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:34:59,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1733827751, now seen corresponding path program 2 times [2024-06-28 00:34:59,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:34:59,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422447314] [2024-06-28 00:34:59,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:34:59,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:01,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:01,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422447314] [2024-06-28 00:35:01,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422447314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:01,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:01,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:01,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568382911] [2024-06-28 00:35:01,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:01,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:01,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:01,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:01,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:01,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:01,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 178 transitions, 2305 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) [2024-06-28 00:35:01,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:01,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:01,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:02,684 INFO L124 PetriNetUnfolderBase]: 2066/3166 cut-off events. [2024-06-28 00:35:02,685 INFO L125 PetriNetUnfolderBase]: For 50191/50193 co-relation queries the response was YES. [2024-06-28 00:35:02,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18708 conditions, 3166 events. 2066/3166 cut-off events. For 50191/50193 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15492 event pairs, 524 based on Foata normal form. 22/3187 useless extension candidates. Maximal degree in co-relation 18646. Up to 2828 conditions per place. [2024-06-28 00:35:02,708 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 163 selfloop transitions, 46 changer transitions 0/212 dead transitions. [2024-06-28 00:35:02,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 212 transitions, 2925 flow [2024-06-28 00:35:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:35:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:35:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 00:35:02,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-28 00:35:02,710 INFO L175 Difference]: Start difference. First operand has 126 places, 178 transitions, 2305 flow. Second operand 8 states and 142 transitions. [2024-06-28 00:35:02,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 212 transitions, 2925 flow [2024-06-28 00:35:02,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 212 transitions, 2847 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 00:35:02,772 INFO L231 Difference]: Finished difference. Result has 132 places, 182 transitions, 2432 flow [2024-06-28 00:35:02,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2432, PETRI_PLACES=132, PETRI_TRANSITIONS=182} [2024-06-28 00:35:02,772 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 92 predicate places. [2024-06-28 00:35:02,772 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 182 transitions, 2432 flow [2024-06-28 00:35:02,773 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) [2024-06-28 00:35:02,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:02,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:02,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:35:02,773 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:02,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:02,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1316637691, now seen corresponding path program 3 times [2024-06-28 00:35:02,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:02,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220720893] [2024-06-28 00:35:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:02,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:04,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:04,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220720893] [2024-06-28 00:35:04,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220720893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:04,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:04,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:04,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053088012] [2024-06-28 00:35:04,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:04,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:04,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:04,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:04,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 182 transitions, 2432 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) [2024-06-28 00:35:04,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:04,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:04,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:05,181 INFO L124 PetriNetUnfolderBase]: 2058/3157 cut-off events. [2024-06-28 00:35:05,181 INFO L125 PetriNetUnfolderBase]: For 50273/50277 co-relation queries the response was YES. [2024-06-28 00:35:05,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18907 conditions, 3157 events. 2058/3157 cut-off events. For 50273/50277 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15489 event pairs, 521 based on Foata normal form. 8/3164 useless extension candidates. Maximal degree in co-relation 18842. Up to 2953 conditions per place. [2024-06-28 00:35:05,205 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 160 selfloop transitions, 46 changer transitions 0/209 dead transitions. [2024-06-28 00:35:05,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 209 transitions, 2955 flow [2024-06-28 00:35:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:35:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:35:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 00:35:05,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-06-28 00:35:05,207 INFO L175 Difference]: Start difference. First operand has 132 places, 182 transitions, 2432 flow. Second operand 8 states and 138 transitions. [2024-06-28 00:35:05,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 209 transitions, 2955 flow [2024-06-28 00:35:05,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 209 transitions, 2871 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 00:35:05,287 INFO L231 Difference]: Finished difference. Result has 137 places, 184 transitions, 2467 flow [2024-06-28 00:35:05,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2467, PETRI_PLACES=137, PETRI_TRANSITIONS=184} [2024-06-28 00:35:05,288 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 97 predicate places. [2024-06-28 00:35:05,288 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 184 transitions, 2467 flow [2024-06-28 00:35:05,288 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) [2024-06-28 00:35:05,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:05,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:05,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:35:05,289 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:05,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:05,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1432106801, now seen corresponding path program 1 times [2024-06-28 00:35:05,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:05,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262031108] [2024-06-28 00:35:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:05,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:07,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:07,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262031108] [2024-06-28 00:35:07,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262031108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:07,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:07,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161546152] [2024-06-28 00:35:07,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:07,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:07,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:07,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:07,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:07,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 184 transitions, 2467 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) [2024-06-28 00:35:07,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:07,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:07,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:07,890 INFO L124 PetriNetUnfolderBase]: 2075/3180 cut-off events. [2024-06-28 00:35:07,891 INFO L125 PetriNetUnfolderBase]: For 53381/53385 co-relation queries the response was YES. [2024-06-28 00:35:07,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19179 conditions, 3180 events. 2075/3180 cut-off events. For 53381/53385 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15612 event pairs, 528 based on Foata normal form. 8/3187 useless extension candidates. Maximal degree in co-relation 19112. Up to 2934 conditions per place. [2024-06-28 00:35:07,911 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 154 selfloop transitions, 52 changer transitions 0/209 dead transitions. [2024-06-28 00:35:07,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 209 transitions, 3013 flow [2024-06-28 00:35:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:35:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:35:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 00:35:07,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542124542124542 [2024-06-28 00:35:07,913 INFO L175 Difference]: Start difference. First operand has 137 places, 184 transitions, 2467 flow. Second operand 7 states and 124 transitions. [2024-06-28 00:35:07,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 209 transitions, 3013 flow [2024-06-28 00:35:07,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 209 transitions, 2931 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:35:07,981 INFO L231 Difference]: Finished difference. Result has 140 places, 186 transitions, 2539 flow [2024-06-28 00:35:07,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2539, PETRI_PLACES=140, PETRI_TRANSITIONS=186} [2024-06-28 00:35:07,982 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 100 predicate places. [2024-06-28 00:35:07,982 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 186 transitions, 2539 flow [2024-06-28 00:35:07,982 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) [2024-06-28 00:35:07,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:07,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:07,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:35:07,982 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:07,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:07,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1432113311, now seen corresponding path program 2 times [2024-06-28 00:35:07,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:07,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701215918] [2024-06-28 00:35:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:07,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:09,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:09,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701215918] [2024-06-28 00:35:09,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701215918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:09,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:09,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:09,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550938570] [2024-06-28 00:35:09,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:09,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:09,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:09,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:09,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:09,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 186 transitions, 2539 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) [2024-06-28 00:35:09,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:09,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:09,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:10,430 INFO L124 PetriNetUnfolderBase]: 2092/3208 cut-off events. [2024-06-28 00:35:10,430 INFO L125 PetriNetUnfolderBase]: For 59227/59229 co-relation queries the response was YES. [2024-06-28 00:35:10,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19690 conditions, 3208 events. 2092/3208 cut-off events. For 59227/59229 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15797 event pairs, 527 based on Foata normal form. 6/3213 useless extension candidates. Maximal degree in co-relation 19622. Up to 2839 conditions per place. [2024-06-28 00:35:10,501 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 151 selfloop transitions, 54 changer transitions 0/208 dead transitions. [2024-06-28 00:35:10,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 208 transitions, 3051 flow [2024-06-28 00:35:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:35:10,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:35:10,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 00:35:10,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468864468864469 [2024-06-28 00:35:10,505 INFO L175 Difference]: Start difference. First operand has 140 places, 186 transitions, 2539 flow. Second operand 7 states and 122 transitions. [2024-06-28 00:35:10,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 208 transitions, 3051 flow [2024-06-28 00:35:10,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 208 transitions, 2935 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 00:35:10,579 INFO L231 Difference]: Finished difference. Result has 143 places, 188 transitions, 2582 flow [2024-06-28 00:35:10,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2582, PETRI_PLACES=143, PETRI_TRANSITIONS=188} [2024-06-28 00:35:10,579 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 103 predicate places. [2024-06-28 00:35:10,580 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 188 transitions, 2582 flow [2024-06-28 00:35:10,580 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) [2024-06-28 00:35:10,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:10,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:10,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:35:10,580 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:10,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash 363689465, now seen corresponding path program 3 times [2024-06-28 00:35:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:10,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333301377] [2024-06-28 00:35:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:10,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:12,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:12,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333301377] [2024-06-28 00:35:12,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333301377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:12,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:12,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:12,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906452205] [2024-06-28 00:35:12,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:12,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:12,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:12,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:12,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:12,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 188 transitions, 2582 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) [2024-06-28 00:35:12,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:12,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:12,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:13,078 INFO L124 PetriNetUnfolderBase]: 2134/3274 cut-off events. [2024-06-28 00:35:13,079 INFO L125 PetriNetUnfolderBase]: For 66124/66126 co-relation queries the response was YES. [2024-06-28 00:35:13,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20500 conditions, 3274 events. 2134/3274 cut-off events. For 66124/66126 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16207 event pairs, 529 based on Foata normal form. 6/3279 useless extension candidates. Maximal degree in co-relation 20431. Up to 2813 conditions per place. [2024-06-28 00:35:13,103 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 148 selfloop transitions, 68 changer transitions 0/219 dead transitions. [2024-06-28 00:35:13,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 219 transitions, 3278 flow [2024-06-28 00:35:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:35:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:35:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 00:35:13,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2024-06-28 00:35:13,105 INFO L175 Difference]: Start difference. First operand has 143 places, 188 transitions, 2582 flow. Second operand 9 states and 147 transitions. [2024-06-28 00:35:13,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 219 transitions, 3278 flow [2024-06-28 00:35:13,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 219 transitions, 3141 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 00:35:13,190 INFO L231 Difference]: Finished difference. Result has 147 places, 192 transitions, 2681 flow [2024-06-28 00:35:13,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2681, PETRI_PLACES=147, PETRI_TRANSITIONS=192} [2024-06-28 00:35:13,192 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 107 predicate places. [2024-06-28 00:35:13,192 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 192 transitions, 2681 flow [2024-06-28 00:35:13,192 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) [2024-06-28 00:35:13,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:13,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:13,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:35:13,192 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:13,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:13,193 INFO L85 PathProgramCache]: Analyzing trace with hash 363682955, now seen corresponding path program 4 times [2024-06-28 00:35:13,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:13,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260256497] [2024-06-28 00:35:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:13,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:14,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:14,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260256497] [2024-06-28 00:35:14,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260256497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:14,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:14,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:14,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877297770] [2024-06-28 00:35:14,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:14,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:14,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:14,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:14,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:14,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:14,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 192 transitions, 2681 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) [2024-06-28 00:35:14,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:14,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:14,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:15,562 INFO L124 PetriNetUnfolderBase]: 2126/3261 cut-off events. [2024-06-28 00:35:15,563 INFO L125 PetriNetUnfolderBase]: For 69187/69191 co-relation queries the response was YES. [2024-06-28 00:35:15,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20657 conditions, 3261 events. 2126/3261 cut-off events. For 69187/69191 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16144 event pairs, 538 based on Foata normal form. 8/3268 useless extension candidates. Maximal degree in co-relation 20587. Up to 2970 conditions per place. [2024-06-28 00:35:15,588 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 155 selfloop transitions, 63 changer transitions 0/221 dead transitions. [2024-06-28 00:35:15,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 221 transitions, 3239 flow [2024-06-28 00:35:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:35:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:35:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 00:35:15,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2024-06-28 00:35:15,589 INFO L175 Difference]: Start difference. First operand has 147 places, 192 transitions, 2681 flow. Second operand 9 states and 147 transitions. [2024-06-28 00:35:15,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 221 transitions, 3239 flow [2024-06-28 00:35:15,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 221 transitions, 3125 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 00:35:15,697 INFO L231 Difference]: Finished difference. Result has 151 places, 192 transitions, 2704 flow [2024-06-28 00:35:15,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2704, PETRI_PLACES=151, PETRI_TRANSITIONS=192} [2024-06-28 00:35:15,698 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 111 predicate places. [2024-06-28 00:35:15,698 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 192 transitions, 2704 flow [2024-06-28 00:35:15,698 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) [2024-06-28 00:35:15,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:15,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:15,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:35:15,699 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:15,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:15,699 INFO L85 PathProgramCache]: Analyzing trace with hash 371963675, now seen corresponding path program 5 times [2024-06-28 00:35:15,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:15,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645111929] [2024-06-28 00:35:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:15,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:17,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645111929] [2024-06-28 00:35:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645111929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:17,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:17,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:17,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324257615] [2024-06-28 00:35:17,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:17,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:17,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:17,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:17,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 192 transitions, 2704 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) [2024-06-28 00:35:17,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:17,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:17,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:17,953 INFO L124 PetriNetUnfolderBase]: 2143/3282 cut-off events. [2024-06-28 00:35:17,953 INFO L125 PetriNetUnfolderBase]: For 73234/73236 co-relation queries the response was YES. [2024-06-28 00:35:17,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21127 conditions, 3282 events. 2143/3282 cut-off events. For 73234/73236 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16202 event pairs, 537 based on Foata normal form. 6/3287 useless extension candidates. Maximal degree in co-relation 21055. Up to 3172 conditions per place. [2024-06-28 00:35:17,981 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 198 selfloop transitions, 18 changer transitions 0/219 dead transitions. [2024-06-28 00:35:17,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 219 transitions, 3264 flow [2024-06-28 00:35:17,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:35:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:35:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:35:17,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39886039886039887 [2024-06-28 00:35:17,983 INFO L175 Difference]: Start difference. First operand has 151 places, 192 transitions, 2704 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:35:17,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 219 transitions, 3264 flow [2024-06-28 00:35:18,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 219 transitions, 3112 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:35:18,078 INFO L231 Difference]: Finished difference. Result has 152 places, 194 transitions, 2645 flow [2024-06-28 00:35:18,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2552, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2645, PETRI_PLACES=152, PETRI_TRANSITIONS=194} [2024-06-28 00:35:18,079 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 112 predicate places. [2024-06-28 00:35:18,079 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 194 transitions, 2645 flow [2024-06-28 00:35:18,079 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) [2024-06-28 00:35:18,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:18,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:18,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:35:18,079 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:18,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:18,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1625697449, now seen corresponding path program 4 times [2024-06-28 00:35:18,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:18,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180153717] [2024-06-28 00:35:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:18,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:19,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:19,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180153717] [2024-06-28 00:35:19,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180153717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:19,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:19,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:19,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264680376] [2024-06-28 00:35:19,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:19,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:19,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:19,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:19,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:19,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:35:19,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 194 transitions, 2645 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:19,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:19,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:35:19,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:20,447 INFO L124 PetriNetUnfolderBase]: 2262/3480 cut-off events. [2024-06-28 00:35:20,447 INFO L125 PetriNetUnfolderBase]: For 88095/88103 co-relation queries the response was YES. [2024-06-28 00:35:20,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22536 conditions, 3480 events. 2262/3480 cut-off events. For 88095/88103 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17610 event pairs, 363 based on Foata normal form. 22/3501 useless extension candidates. Maximal degree in co-relation 22463. Up to 2332 conditions per place. [2024-06-28 00:35:20,475 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 147 selfloop transitions, 86 changer transitions 0/236 dead transitions. [2024-06-28 00:35:20,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 236 transitions, 3442 flow [2024-06-28 00:35:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:35:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:35:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 00:35:20,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5457875457875457 [2024-06-28 00:35:20,477 INFO L175 Difference]: Start difference. First operand has 152 places, 194 transitions, 2645 flow. Second operand 7 states and 149 transitions. [2024-06-28 00:35:20,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 236 transitions, 3442 flow [2024-06-28 00:35:20,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 236 transitions, 3367 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 00:35:20,573 INFO L231 Difference]: Finished difference. Result has 153 places, 197 transitions, 2852 flow [2024-06-28 00:35:20,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2570, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2852, PETRI_PLACES=153, PETRI_TRANSITIONS=197} [2024-06-28 00:35:20,574 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 113 predicate places. [2024-06-28 00:35:20,574 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 197 transitions, 2852 flow [2024-06-28 00:35:20,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:20,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:20,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:20,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:35:20,574 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:20,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1625757899, now seen corresponding path program 5 times [2024-06-28 00:35:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:20,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913429113] [2024-06-28 00:35:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:20,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:22,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:22,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913429113] [2024-06-28 00:35:22,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913429113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:22,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:22,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:22,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21409940] [2024-06-28 00:35:22,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:22,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:22,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:22,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:35:22,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 197 transitions, 2852 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:22,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:22,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:35:22,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:22,992 INFO L124 PetriNetUnfolderBase]: 2337/3605 cut-off events. [2024-06-28 00:35:22,993 INFO L125 PetriNetUnfolderBase]: For 99088/99096 co-relation queries the response was YES. [2024-06-28 00:35:23,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23873 conditions, 3605 events. 2337/3605 cut-off events. For 99088/99096 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 18460 event pairs, 512 based on Foata normal form. 26/3630 useless extension candidates. Maximal degree in co-relation 23799. Up to 2891 conditions per place. [2024-06-28 00:35:23,025 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 150 selfloop transitions, 81 changer transitions 0/234 dead transitions. [2024-06-28 00:35:23,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 234 transitions, 3499 flow [2024-06-28 00:35:23,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:35:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:35:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-28 00:35:23,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311355311355311 [2024-06-28 00:35:23,027 INFO L175 Difference]: Start difference. First operand has 153 places, 197 transitions, 2852 flow. Second operand 7 states and 145 transitions. [2024-06-28 00:35:23,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 234 transitions, 3499 flow [2024-06-28 00:35:23,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 234 transitions, 3411 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 00:35:23,170 INFO L231 Difference]: Finished difference. Result has 157 places, 198 transitions, 2975 flow [2024-06-28 00:35:23,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2975, PETRI_PLACES=157, PETRI_TRANSITIONS=198} [2024-06-28 00:35:23,171 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 117 predicate places. [2024-06-28 00:35:23,172 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 198 transitions, 2975 flow [2024-06-28 00:35:23,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:23,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:23,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:23,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:35:23,172 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:23,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2122131317, now seen corresponding path program 6 times [2024-06-28 00:35:23,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:23,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94215799] [2024-06-28 00:35:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:23,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:25,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94215799] [2024-06-28 00:35:25,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94215799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:25,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:25,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:25,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195597783] [2024-06-28 00:35:25,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:25,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:25,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:25,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:25,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:25,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:35:25,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 198 transitions, 2975 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:25,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:25,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:35:25,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:25,960 INFO L124 PetriNetUnfolderBase]: 2301/3552 cut-off events. [2024-06-28 00:35:25,961 INFO L125 PetriNetUnfolderBase]: For 91597/91613 co-relation queries the response was YES. [2024-06-28 00:35:25,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23236 conditions, 3552 events. 2301/3552 cut-off events. For 91597/91613 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18165 event pairs, 497 based on Foata normal form. 32/3583 useless extension candidates. Maximal degree in co-relation 23161. Up to 3007 conditions per place. [2024-06-28 00:35:25,996 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 145 selfloop transitions, 82 changer transitions 0/230 dead transitions. [2024-06-28 00:35:25,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 230 transitions, 3561 flow [2024-06-28 00:35:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:35:25,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:35:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 00:35:25,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-28 00:35:25,999 INFO L175 Difference]: Start difference. First operand has 157 places, 198 transitions, 2975 flow. Second operand 8 states and 152 transitions. [2024-06-28 00:35:25,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 230 transitions, 3561 flow [2024-06-28 00:35:26,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 230 transitions, 3367 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 00:35:26,229 INFO L231 Difference]: Finished difference. Result has 160 places, 198 transitions, 2956 flow [2024-06-28 00:35:26,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2781, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2956, PETRI_PLACES=160, PETRI_TRANSITIONS=198} [2024-06-28 00:35:26,230 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 120 predicate places. [2024-06-28 00:35:26,230 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 198 transitions, 2956 flow [2024-06-28 00:35:26,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:26,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:26,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:26,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:35:26,231 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:26,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash -894185385, now seen corresponding path program 6 times [2024-06-28 00:35:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:26,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285863860] [2024-06-28 00:35:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:26,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:28,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:28,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285863860] [2024-06-28 00:35:28,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285863860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:28,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:28,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:28,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254010712] [2024-06-28 00:35:28,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:28,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:28,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:28,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:28,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:28,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:28,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 198 transitions, 2956 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) [2024-06-28 00:35:28,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:28,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:28,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:29,143 INFO L124 PetriNetUnfolderBase]: 2362/3641 cut-off events. [2024-06-28 00:35:29,143 INFO L125 PetriNetUnfolderBase]: For 87512/87522 co-relation queries the response was YES. [2024-06-28 00:35:29,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23877 conditions, 3641 events. 2362/3641 cut-off events. For 87512/87522 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 18707 event pairs, 504 based on Foata normal form. 12/3652 useless extension candidates. Maximal degree in co-relation 23800. Up to 3292 conditions per place. [2024-06-28 00:35:29,169 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 163 selfloop transitions, 77 changer transitions 0/243 dead transitions. [2024-06-28 00:35:29,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 243 transitions, 3906 flow [2024-06-28 00:35:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:35:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:35:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 00:35:29,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2024-06-28 00:35:29,171 INFO L175 Difference]: Start difference. First operand has 160 places, 198 transitions, 2956 flow. Second operand 7 states and 136 transitions. [2024-06-28 00:35:29,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 243 transitions, 3906 flow [2024-06-28 00:35:29,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 243 transitions, 3721 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:35:29,278 INFO L231 Difference]: Finished difference. Result has 163 places, 216 transitions, 3393 flow [2024-06-28 00:35:29,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3393, PETRI_PLACES=163, PETRI_TRANSITIONS=216} [2024-06-28 00:35:29,279 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 123 predicate places. [2024-06-28 00:35:29,279 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 216 transitions, 3393 flow [2024-06-28 00:35:29,279 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) [2024-06-28 00:35:29,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:29,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:29,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:35:29,279 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:29,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:29,280 INFO L85 PathProgramCache]: Analyzing trace with hash -913379655, now seen corresponding path program 7 times [2024-06-28 00:35:29,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:29,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895237118] [2024-06-28 00:35:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:29,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:31,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895237118] [2024-06-28 00:35:31,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895237118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:31,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:31,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683638021] [2024-06-28 00:35:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:31,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:31,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:31,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:31,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:31,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 216 transitions, 3393 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) [2024-06-28 00:35:31,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:31,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:31,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:31,981 INFO L124 PetriNetUnfolderBase]: 2409/3716 cut-off events. [2024-06-28 00:35:31,982 INFO L125 PetriNetUnfolderBase]: For 91988/91993 co-relation queries the response was YES. [2024-06-28 00:35:31,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24473 conditions, 3716 events. 2409/3716 cut-off events. For 91988/91993 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19181 event pairs, 516 based on Foata normal form. 8/3723 useless extension candidates. Maximal degree in co-relation 24394. Up to 3221 conditions per place. [2024-06-28 00:35:32,008 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 167 selfloop transitions, 83 changer transitions 0/253 dead transitions. [2024-06-28 00:35:32,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 253 transitions, 4106 flow [2024-06-28 00:35:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:35:32,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:35:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 00:35:32,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2024-06-28 00:35:32,010 INFO L175 Difference]: Start difference. First operand has 163 places, 216 transitions, 3393 flow. Second operand 7 states and 134 transitions. [2024-06-28 00:35:32,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 253 transitions, 4106 flow [2024-06-28 00:35:32,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 253 transitions, 3980 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 00:35:32,146 INFO L231 Difference]: Finished difference. Result has 168 places, 227 transitions, 3620 flow [2024-06-28 00:35:32,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3267, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3620, PETRI_PLACES=168, PETRI_TRANSITIONS=227} [2024-06-28 00:35:32,146 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 128 predicate places. [2024-06-28 00:35:32,146 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 227 transitions, 3620 flow [2024-06-28 00:35:32,146 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) [2024-06-28 00:35:32,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:32,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:32,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:35:32,147 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:32,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:32,147 INFO L85 PathProgramCache]: Analyzing trace with hash -503231203, now seen corresponding path program 1 times [2024-06-28 00:35:32,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:32,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465259247] [2024-06-28 00:35:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:32,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:33,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:33,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465259247] [2024-06-28 00:35:33,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465259247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:33,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:33,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:35:33,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870141191] [2024-06-28 00:35:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:33,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:35:33,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:33,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:35:33,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:35:33,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:33,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 227 transitions, 3620 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:33,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:33,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:33,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:34,654 INFO L124 PetriNetUnfolderBase]: 2439/3759 cut-off events. [2024-06-28 00:35:34,654 INFO L125 PetriNetUnfolderBase]: For 99791/99791 co-relation queries the response was YES. [2024-06-28 00:35:34,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25128 conditions, 3759 events. 2439/3759 cut-off events. For 99791/99791 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19464 event pairs, 683 based on Foata normal form. 6/3764 useless extension candidates. Maximal degree in co-relation 25047. Up to 3641 conditions per place. [2024-06-28 00:35:34,689 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 227 selfloop transitions, 22 changer transitions 0/252 dead transitions. [2024-06-28 00:35:34,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 252 transitions, 4294 flow [2024-06-28 00:35:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:35:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:35:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 00:35:34,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 00:35:34,691 INFO L175 Difference]: Start difference. First operand has 168 places, 227 transitions, 3620 flow. Second operand 6 states and 108 transitions. [2024-06-28 00:35:34,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 252 transitions, 4294 flow [2024-06-28 00:35:34,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 252 transitions, 4116 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 00:35:34,901 INFO L231 Difference]: Finished difference. Result has 170 places, 233 transitions, 3547 flow [2024-06-28 00:35:34,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3547, PETRI_PLACES=170, PETRI_TRANSITIONS=233} [2024-06-28 00:35:34,901 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 130 predicate places. [2024-06-28 00:35:34,902 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 233 transitions, 3547 flow [2024-06-28 00:35:34,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:34,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:34,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:34,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:35:34,902 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:34,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:34,903 INFO L85 PathProgramCache]: Analyzing trace with hash 694933575, now seen corresponding path program 2 times [2024-06-28 00:35:34,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:34,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380773302] [2024-06-28 00:35:34,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:34,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:36,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:36,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380773302] [2024-06-28 00:35:36,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380773302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:36,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:36,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:35:36,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077568239] [2024-06-28 00:35:36,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:36,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:35:36,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:36,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:35:36,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:35:36,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:36,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 233 transitions, 3547 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:36,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:36,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:36,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:37,266 INFO L124 PetriNetUnfolderBase]: 2421/3735 cut-off events. [2024-06-28 00:35:37,266 INFO L125 PetriNetUnfolderBase]: For 100240/100240 co-relation queries the response was YES. [2024-06-28 00:35:37,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24928 conditions, 3735 events. 2421/3735 cut-off events. For 100240/100240 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19326 event pairs, 675 based on Foata normal form. 6/3740 useless extension candidates. Maximal degree in co-relation 24845. Up to 3672 conditions per place. [2024-06-28 00:35:37,299 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 227 selfloop transitions, 15 changer transitions 0/245 dead transitions. [2024-06-28 00:35:37,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 245 transitions, 4071 flow [2024-06-28 00:35:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:35:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:35:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-28 00:35:37,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39194139194139194 [2024-06-28 00:35:37,301 INFO L175 Difference]: Start difference. First operand has 170 places, 233 transitions, 3547 flow. Second operand 7 states and 107 transitions. [2024-06-28 00:35:37,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 245 transitions, 4071 flow [2024-06-28 00:35:37,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 245 transitions, 4033 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 00:35:37,494 INFO L231 Difference]: Finished difference. Result has 175 places, 233 transitions, 3546 flow [2024-06-28 00:35:37,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3509, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3546, PETRI_PLACES=175, PETRI_TRANSITIONS=233} [2024-06-28 00:35:37,494 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 135 predicate places. [2024-06-28 00:35:37,494 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 233 transitions, 3546 flow [2024-06-28 00:35:37,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:37,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:37,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:37,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:35:37,495 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:37,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:37,495 INFO L85 PathProgramCache]: Analyzing trace with hash 596937240, now seen corresponding path program 1 times [2024-06-28 00:35:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:37,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285442181] [2024-06-28 00:35:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:39,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285442181] [2024-06-28 00:35:39,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285442181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:39,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:39,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:35:39,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884224854] [2024-06-28 00:35:39,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:39,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:35:39,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:39,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:35:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:35:39,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:39,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 233 transitions, 3546 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:39,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:39,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:39,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:40,568 INFO L124 PetriNetUnfolderBase]: 2462/3820 cut-off events. [2024-06-28 00:35:40,569 INFO L125 PetriNetUnfolderBase]: For 109958/109960 co-relation queries the response was YES. [2024-06-28 00:35:40,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25423 conditions, 3820 events. 2462/3820 cut-off events. For 109958/109960 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 20090 event pairs, 625 based on Foata normal form. 14/3833 useless extension candidates. Maximal degree in co-relation 25338. Up to 3418 conditions per place. [2024-06-28 00:35:40,604 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 190 selfloop transitions, 68 changer transitions 0/261 dead transitions. [2024-06-28 00:35:40,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 261 transitions, 4200 flow [2024-06-28 00:35:40,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:35:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:35:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 00:35:40,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42165242165242167 [2024-06-28 00:35:40,606 INFO L175 Difference]: Start difference. First operand has 175 places, 233 transitions, 3546 flow. Second operand 9 states and 148 transitions. [2024-06-28 00:35:40,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 261 transitions, 4200 flow [2024-06-28 00:35:40,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 261 transitions, 4135 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:35:40,779 INFO L231 Difference]: Finished difference. Result has 176 places, 234 transitions, 3665 flow [2024-06-28 00:35:40,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3481, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3665, PETRI_PLACES=176, PETRI_TRANSITIONS=234} [2024-06-28 00:35:40,780 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 136 predicate places. [2024-06-28 00:35:40,780 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 234 transitions, 3665 flow [2024-06-28 00:35:40,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:40,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:40,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:40,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:35:40,781 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:40,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:40,781 INFO L85 PathProgramCache]: Analyzing trace with hash -893477242, now seen corresponding path program 2 times [2024-06-28 00:35:40,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:40,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220642184] [2024-06-28 00:35:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:40,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:42,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:42,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220642184] [2024-06-28 00:35:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220642184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:42,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:42,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:35:42,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908651511] [2024-06-28 00:35:42,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:42,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:35:42,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:42,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:35:42,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:35:42,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:42,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 234 transitions, 3665 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:42,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:42,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:42,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:43,824 INFO L124 PetriNetUnfolderBase]: 2503/3889 cut-off events. [2024-06-28 00:35:43,825 INFO L125 PetriNetUnfolderBase]: For 118285/118289 co-relation queries the response was YES. [2024-06-28 00:35:43,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26173 conditions, 3889 events. 2503/3889 cut-off events. For 118285/118289 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 20604 event pairs, 660 based on Foata normal form. 16/3904 useless extension candidates. Maximal degree in co-relation 26090. Up to 3472 conditions per place. [2024-06-28 00:35:43,859 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 187 selfloop transitions, 77 changer transitions 0/267 dead transitions. [2024-06-28 00:35:43,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 267 transitions, 4369 flow [2024-06-28 00:35:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:35:43,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:35:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 00:35:43,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42450142450142453 [2024-06-28 00:35:43,884 INFO L175 Difference]: Start difference. First operand has 176 places, 234 transitions, 3665 flow. Second operand 9 states and 149 transitions. [2024-06-28 00:35:43,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 267 transitions, 4369 flow [2024-06-28 00:35:44,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 267 transitions, 4203 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:35:44,071 INFO L231 Difference]: Finished difference. Result has 178 places, 235 transitions, 3704 flow [2024-06-28 00:35:44,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3499, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3704, PETRI_PLACES=178, PETRI_TRANSITIONS=235} [2024-06-28 00:35:44,073 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 138 predicate places. [2024-06-28 00:35:44,073 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 235 transitions, 3704 flow [2024-06-28 00:35:44,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:44,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:44,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:44,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:35:44,073 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:44,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:44,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1445840852, now seen corresponding path program 3 times [2024-06-28 00:35:44,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:44,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934636081] [2024-06-28 00:35:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:44,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:46,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:46,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934636081] [2024-06-28 00:35:46,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934636081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:46,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:46,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:35:46,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809859116] [2024-06-28 00:35:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:46,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:35:46,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:46,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:35:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:35:46,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:46,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 235 transitions, 3704 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:46,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:46,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:46,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:47,030 INFO L124 PetriNetUnfolderBase]: 2544/3958 cut-off events. [2024-06-28 00:35:47,031 INFO L125 PetriNetUnfolderBase]: For 125322/125326 co-relation queries the response was YES. [2024-06-28 00:35:47,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26625 conditions, 3958 events. 2544/3958 cut-off events. For 125322/125326 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 21077 event pairs, 658 based on Foata normal form. 16/3973 useless extension candidates. Maximal degree in co-relation 26541. Up to 3346 conditions per place. [2024-06-28 00:35:47,069 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 177 selfloop transitions, 84 changer transitions 0/264 dead transitions. [2024-06-28 00:35:47,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 264 transitions, 4362 flow [2024-06-28 00:35:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:35:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:35:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 00:35:47,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2024-06-28 00:35:47,073 INFO L175 Difference]: Start difference. First operand has 178 places, 235 transitions, 3704 flow. Second operand 9 states and 147 transitions. [2024-06-28 00:35:47,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 264 transitions, 4362 flow [2024-06-28 00:35:47,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 264 transitions, 4177 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 00:35:47,247 INFO L231 Difference]: Finished difference. Result has 180 places, 236 transitions, 3739 flow [2024-06-28 00:35:47,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3519, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3739, PETRI_PLACES=180, PETRI_TRANSITIONS=236} [2024-06-28 00:35:47,248 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 140 predicate places. [2024-06-28 00:35:47,248 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 236 transitions, 3739 flow [2024-06-28 00:35:47,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:47,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:47,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:47,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:35:47,248 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:47,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:47,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2136909385, now seen corresponding path program 1 times [2024-06-28 00:35:47,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:47,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020352153] [2024-06-28 00:35:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:47,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:48,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:48,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020352153] [2024-06-28 00:35:48,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020352153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:48,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:48,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:35:48,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885985362] [2024-06-28 00:35:48,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:48,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:35:48,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:48,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:35:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:35:48,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:48,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 236 transitions, 3739 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:48,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:48,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:48,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:49,477 INFO L124 PetriNetUnfolderBase]: 2591/4024 cut-off events. [2024-06-28 00:35:49,478 INFO L125 PetriNetUnfolderBase]: For 125241/125243 co-relation queries the response was YES. [2024-06-28 00:35:49,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27194 conditions, 4024 events. 2591/4024 cut-off events. For 125241/125243 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 21448 event pairs, 680 based on Foata normal form. 4/4027 useless extension candidates. Maximal degree in co-relation 27109. Up to 3802 conditions per place. [2024-06-28 00:35:49,514 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 224 selfloop transitions, 51 changer transitions 0/278 dead transitions. [2024-06-28 00:35:49,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 278 transitions, 4741 flow [2024-06-28 00:35:49,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:35:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:35:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 00:35:49,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542124542124542 [2024-06-28 00:35:49,516 INFO L175 Difference]: Start difference. First operand has 180 places, 236 transitions, 3739 flow. Second operand 7 states and 124 transitions. [2024-06-28 00:35:49,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 278 transitions, 4741 flow [2024-06-28 00:35:49,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 278 transitions, 4539 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 00:35:49,731 INFO L231 Difference]: Finished difference. Result has 182 places, 258 transitions, 3946 flow [2024-06-28 00:35:49,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3946, PETRI_PLACES=182, PETRI_TRANSITIONS=258} [2024-06-28 00:35:49,732 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 142 predicate places. [2024-06-28 00:35:49,732 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 258 transitions, 3946 flow [2024-06-28 00:35:49,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:49,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:49,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:49,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:35:49,733 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:49,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2136640615, now seen corresponding path program 2 times [2024-06-28 00:35:49,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:49,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073198627] [2024-06-28 00:35:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:49,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:51,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073198627] [2024-06-28 00:35:51,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073198627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:51,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:51,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:35:51,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330288872] [2024-06-28 00:35:51,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:51,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:35:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:51,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:35:51,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:35:51,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:51,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 258 transitions, 3946 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:51,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:51,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:51,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:52,112 INFO L124 PetriNetUnfolderBase]: 2647/4101 cut-off events. [2024-06-28 00:35:52,112 INFO L125 PetriNetUnfolderBase]: For 133778/133778 co-relation queries the response was YES. [2024-06-28 00:35:52,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28213 conditions, 4101 events. 2647/4101 cut-off events. For 133778/133778 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 21912 event pairs, 713 based on Foata normal form. 3/4103 useless extension candidates. Maximal degree in co-relation 28124. Up to 4007 conditions per place. [2024-06-28 00:35:52,154 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 258 selfloop transitions, 34 changer transitions 0/295 dead transitions. [2024-06-28 00:35:52,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 295 transitions, 4908 flow [2024-06-28 00:35:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:35:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:35:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:35:52,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41346153846153844 [2024-06-28 00:35:52,155 INFO L175 Difference]: Start difference. First operand has 182 places, 258 transitions, 3946 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:35:52,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 295 transitions, 4908 flow [2024-06-28 00:35:52,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 295 transitions, 4857 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-28 00:35:52,481 INFO L231 Difference]: Finished difference. Result has 191 places, 278 transitions, 4255 flow [2024-06-28 00:35:52,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3901, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4255, PETRI_PLACES=191, PETRI_TRANSITIONS=278} [2024-06-28 00:35:52,484 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 151 predicate places. [2024-06-28 00:35:52,484 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 278 transitions, 4255 flow [2024-06-28 00:35:52,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:52,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:52,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:52,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:35:52,487 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:52,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash 931792432, now seen corresponding path program 4 times [2024-06-28 00:35:52,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:52,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319202773] [2024-06-28 00:35:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:52,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:54,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:54,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319202773] [2024-06-28 00:35:54,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319202773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:54,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:54,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:35:54,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113755364] [2024-06-28 00:35:54,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:54,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:35:54,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:54,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:35:54,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:35:54,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:54,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 278 transitions, 4255 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:54,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:54,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:54,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:55,034 INFO L124 PetriNetUnfolderBase]: 2688/4164 cut-off events. [2024-06-28 00:35:55,034 INFO L125 PetriNetUnfolderBase]: For 149823/149827 co-relation queries the response was YES. [2024-06-28 00:35:55,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29302 conditions, 4164 events. 2688/4164 cut-off events. For 149823/149827 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 22264 event pairs, 731 based on Foata normal form. 16/4179 useless extension candidates. Maximal degree in co-relation 29207. Up to 3983 conditions per place. [2024-06-28 00:35:55,216 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 286 selfloop transitions, 18 changer transitions 0/307 dead transitions. [2024-06-28 00:35:55,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 307 transitions, 4999 flow [2024-06-28 00:35:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:35:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:35:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:35:55,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045584045584046 [2024-06-28 00:35:55,218 INFO L175 Difference]: Start difference. First operand has 191 places, 278 transitions, 4255 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:35:55,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 307 transitions, 4999 flow [2024-06-28 00:35:55,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 307 transitions, 4902 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-06-28 00:35:55,553 INFO L231 Difference]: Finished difference. Result has 199 places, 279 transitions, 4246 flow [2024-06-28 00:35:55,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4158, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4246, PETRI_PLACES=199, PETRI_TRANSITIONS=279} [2024-06-28 00:35:55,553 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 159 predicate places. [2024-06-28 00:35:55,554 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 279 transitions, 4246 flow [2024-06-28 00:35:55,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:55,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:55,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:55,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:35:55,554 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:55,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:55,555 INFO L85 PathProgramCache]: Analyzing trace with hash -327615719, now seen corresponding path program 3 times [2024-06-28 00:35:55,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:55,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656038944] [2024-06-28 00:35:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:55,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:56,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:56,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656038944] [2024-06-28 00:35:56,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656038944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:56,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:56,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:35:56,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893539190] [2024-06-28 00:35:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:35:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:56,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:35:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:35:56,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:35:56,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 279 transitions, 4246 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:56,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:56,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:35:56,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:35:57,602 INFO L124 PetriNetUnfolderBase]: 2731/4222 cut-off events. [2024-06-28 00:35:57,603 INFO L125 PetriNetUnfolderBase]: For 152204/152204 co-relation queries the response was YES. [2024-06-28 00:35:57,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29947 conditions, 4222 events. 2731/4222 cut-off events. For 152204/152204 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 22560 event pairs, 765 based on Foata normal form. 3/4224 useless extension candidates. Maximal degree in co-relation 29849. Up to 4151 conditions per place. [2024-06-28 00:35:57,647 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 275 selfloop transitions, 28 changer transitions 0/306 dead transitions. [2024-06-28 00:35:57,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 306 transitions, 5186 flow [2024-06-28 00:35:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:35:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:35:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 00:35:57,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-06-28 00:35:57,649 INFO L175 Difference]: Start difference. First operand has 199 places, 279 transitions, 4246 flow. Second operand 8 states and 124 transitions. [2024-06-28 00:35:57,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 306 transitions, 5186 flow [2024-06-28 00:35:57,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 306 transitions, 5095 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 00:35:57,923 INFO L231 Difference]: Finished difference. Result has 201 places, 293 transitions, 4473 flow [2024-06-28 00:35:57,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4157, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4473, PETRI_PLACES=201, PETRI_TRANSITIONS=293} [2024-06-28 00:35:57,924 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 161 predicate places. [2024-06-28 00:35:57,924 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 293 transitions, 4473 flow [2024-06-28 00:35:57,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:57,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:35:57,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:35:57,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:35:57,925 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:35:57,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:35:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1361406456, now seen corresponding path program 5 times [2024-06-28 00:35:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:35:57,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981504396] [2024-06-28 00:35:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:35:57,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:35:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:35:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:35:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:35:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981504396] [2024-06-28 00:35:59,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981504396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:35:59,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:35:59,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:35:59,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520549268] [2024-06-28 00:35:59,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:35:59,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:35:59,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:35:59,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:35:59,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:35:59,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:35:59,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 293 transitions, 4473 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:35:59,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:35:59,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:35:59,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:00,775 INFO L124 PetriNetUnfolderBase]: 2772/4296 cut-off events. [2024-06-28 00:36:00,775 INFO L125 PetriNetUnfolderBase]: For 160219/160232 co-relation queries the response was YES. [2024-06-28 00:36:00,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30585 conditions, 4296 events. 2772/4296 cut-off events. For 160219/160232 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 23126 event pairs, 523 based on Foata normal form. 22/4317 useless extension candidates. Maximal degree in co-relation 30485. Up to 3680 conditions per place. [2024-06-28 00:36:00,818 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 225 selfloop transitions, 96 changer transitions 0/324 dead transitions. [2024-06-28 00:36:00,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 324 transitions, 5275 flow [2024-06-28 00:36:00,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:36:00,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:36:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 00:36:00,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2024-06-28 00:36:00,820 INFO L175 Difference]: Start difference. First operand has 201 places, 293 transitions, 4473 flow. Second operand 7 states and 141 transitions. [2024-06-28 00:36:00,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 324 transitions, 5275 flow [2024-06-28 00:36:01,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 324 transitions, 5146 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-28 00:36:01,187 INFO L231 Difference]: Finished difference. Result has 205 places, 294 transitions, 4594 flow [2024-06-28 00:36:01,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4344, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4594, PETRI_PLACES=205, PETRI_TRANSITIONS=294} [2024-06-28 00:36:01,188 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 165 predicate places. [2024-06-28 00:36:01,188 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 294 transitions, 4594 flow [2024-06-28 00:36:01,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:01,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:01,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:01,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:36:01,189 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:01,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:01,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1870601523, now seen corresponding path program 4 times [2024-06-28 00:36:01,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:01,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663366390] [2024-06-28 00:36:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:01,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:02,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:02,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663366390] [2024-06-28 00:36:02,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663366390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:02,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:02,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:36:02,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725958475] [2024-06-28 00:36:02,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:02,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:36:02,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:02,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:36:02,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:36:02,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:02,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 294 transitions, 4594 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:02,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:02,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:02,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:03,566 INFO L124 PetriNetUnfolderBase]: 2814/4361 cut-off events. [2024-06-28 00:36:03,566 INFO L125 PetriNetUnfolderBase]: For 163757/163763 co-relation queries the response was YES. [2024-06-28 00:36:03,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31523 conditions, 4361 events. 2814/4361 cut-off events. For 163757/163763 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 23618 event pairs, 621 based on Foata normal form. 8/4368 useless extension candidates. Maximal degree in co-relation 31422. Up to 4008 conditions per place. [2024-06-28 00:36:03,609 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 241 selfloop transitions, 101 changer transitions 0/345 dead transitions. [2024-06-28 00:36:03,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 345 transitions, 5850 flow [2024-06-28 00:36:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:36:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:36:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 00:36:03,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2024-06-28 00:36:03,611 INFO L175 Difference]: Start difference. First operand has 205 places, 294 transitions, 4594 flow. Second operand 7 states and 136 transitions. [2024-06-28 00:36:03,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 345 transitions, 5850 flow [2024-06-28 00:36:04,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 345 transitions, 5608 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 00:36:04,026 INFO L231 Difference]: Finished difference. Result has 210 places, 319 transitions, 5037 flow [2024-06-28 00:36:04,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4362, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5037, PETRI_PLACES=210, PETRI_TRANSITIONS=319} [2024-06-28 00:36:04,026 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 170 predicate places. [2024-06-28 00:36:04,026 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 319 transitions, 5037 flow [2024-06-28 00:36:04,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:04,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:04,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:04,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:36:04,027 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:04,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:04,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1750002938, now seen corresponding path program 6 times [2024-06-28 00:36:04,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:04,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365788083] [2024-06-28 00:36:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:04,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:05,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:05,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:05,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365788083] [2024-06-28 00:36:05,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365788083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:05,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:05,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:36:05,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449218433] [2024-06-28 00:36:05,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:05,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:36:05,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:36:05,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:36:05,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:36:05,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 319 transitions, 5037 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:05,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:05,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:36:05,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:06,955 INFO L124 PetriNetUnfolderBase]: 2855/4427 cut-off events. [2024-06-28 00:36:06,955 INFO L125 PetriNetUnfolderBase]: For 172372/172379 co-relation queries the response was YES. [2024-06-28 00:36:06,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32665 conditions, 4427 events. 2855/4427 cut-off events. For 172372/172379 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 23980 event pairs, 431 based on Foata normal form. 18/4444 useless extension candidates. Maximal degree in co-relation 32560. Up to 2206 conditions per place. [2024-06-28 00:36:07,004 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 221 selfloop transitions, 138 changer transitions 0/362 dead transitions. [2024-06-28 00:36:07,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 362 transitions, 6061 flow [2024-06-28 00:36:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:36:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:36:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 00:36:07,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532051282051282 [2024-06-28 00:36:07,006 INFO L175 Difference]: Start difference. First operand has 210 places, 319 transitions, 5037 flow. Second operand 8 states and 166 transitions. [2024-06-28 00:36:07,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 362 transitions, 6061 flow [2024-06-28 00:36:07,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 362 transitions, 5998 flow, removed 25 selfloop flow, removed 1 redundant places. [2024-06-28 00:36:07,425 INFO L231 Difference]: Finished difference. Result has 217 places, 320 transitions, 5306 flow [2024-06-28 00:36:07,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4974, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5306, PETRI_PLACES=217, PETRI_TRANSITIONS=320} [2024-06-28 00:36:07,425 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 177 predicate places. [2024-06-28 00:36:07,425 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 320 transitions, 5306 flow [2024-06-28 00:36:07,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:07,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:07,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:07,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:36:07,430 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:07,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1744438748, now seen corresponding path program 7 times [2024-06-28 00:36:07,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:07,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34775618] [2024-06-28 00:36:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:07,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:09,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:09,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34775618] [2024-06-28 00:36:09,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34775618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:09,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:09,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:36:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672515212] [2024-06-28 00:36:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:09,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:36:09,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:09,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:36:09,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:36:09,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:36:09,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 320 transitions, 5306 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:09,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:09,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:36:09,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:10,614 INFO L124 PetriNetUnfolderBase]: 2876/4471 cut-off events. [2024-06-28 00:36:10,614 INFO L125 PetriNetUnfolderBase]: For 173719/173723 co-relation queries the response was YES. [2024-06-28 00:36:10,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33153 conditions, 4471 events. 2876/4471 cut-off events. For 173719/173723 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 24420 event pairs, 633 based on Foata normal form. 16/4486 useless extension candidates. Maximal degree in co-relation 33046. Up to 3922 conditions per place. [2024-06-28 00:36:10,663 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 254 selfloop transitions, 94 changer transitions 0/351 dead transitions. [2024-06-28 00:36:10,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 351 transitions, 6059 flow [2024-06-28 00:36:10,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:36:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:36:10,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 00:36:10,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-28 00:36:10,665 INFO L175 Difference]: Start difference. First operand has 217 places, 320 transitions, 5306 flow. Second operand 8 states and 150 transitions. [2024-06-28 00:36:10,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 351 transitions, 6059 flow [2024-06-28 00:36:11,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 351 transitions, 5796 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 00:36:11,190 INFO L231 Difference]: Finished difference. Result has 219 places, 320 transitions, 5179 flow [2024-06-28 00:36:11,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4974, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5179, PETRI_PLACES=219, PETRI_TRANSITIONS=320} [2024-06-28 00:36:11,191 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 179 predicate places. [2024-06-28 00:36:11,191 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 320 transitions, 5179 flow [2024-06-28 00:36:11,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:11,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:11,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:11,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:36:11,191 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:11,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:11,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1182584521, now seen corresponding path program 5 times [2024-06-28 00:36:11,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:11,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373735982] [2024-06-28 00:36:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:12,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:12,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373735982] [2024-06-28 00:36:12,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373735982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:12,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:12,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:36:12,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749927467] [2024-06-28 00:36:12,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:12,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:36:12,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:36:12,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:36:12,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:12,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 320 transitions, 5179 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:12,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:12,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:12,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:14,204 INFO L124 PetriNetUnfolderBase]: 2958/4584 cut-off events. [2024-06-28 00:36:14,207 INFO L125 PetriNetUnfolderBase]: For 174308/174312 co-relation queries the response was YES. [2024-06-28 00:36:14,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33915 conditions, 4584 events. 2958/4584 cut-off events. For 174308/174312 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 25161 event pairs, 652 based on Foata normal form. 6/4589 useless extension candidates. Maximal degree in co-relation 33806. Up to 4196 conditions per place. [2024-06-28 00:36:14,246 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 257 selfloop transitions, 112 changer transitions 0/372 dead transitions. [2024-06-28 00:36:14,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 372 transitions, 6633 flow [2024-06-28 00:36:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:36:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:36:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 00:36:14,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 00:36:14,248 INFO L175 Difference]: Start difference. First operand has 219 places, 320 transitions, 5179 flow. Second operand 8 states and 144 transitions. [2024-06-28 00:36:14,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 372 transitions, 6633 flow [2024-06-28 00:36:14,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 372 transitions, 6297 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:36:14,706 INFO L231 Difference]: Finished difference. Result has 221 places, 346 transitions, 5559 flow [2024-06-28 00:36:14,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4849, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5559, PETRI_PLACES=221, PETRI_TRANSITIONS=346} [2024-06-28 00:36:14,708 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 181 predicate places. [2024-06-28 00:36:14,708 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 346 transitions, 5559 flow [2024-06-28 00:36:14,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:14,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:14,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:14,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:36:14,709 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:14,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:14,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1149074761, now seen corresponding path program 6 times [2024-06-28 00:36:14,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:14,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015665689] [2024-06-28 00:36:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:14,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:16,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:16,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015665689] [2024-06-28 00:36:16,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015665689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:16,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:16,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:36:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015500349] [2024-06-28 00:36:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:16,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:36:16,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:36:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:36:16,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:16,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 346 transitions, 5559 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:16,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:16,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:16,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:17,512 INFO L124 PetriNetUnfolderBase]: 2978/4613 cut-off events. [2024-06-28 00:36:17,512 INFO L125 PetriNetUnfolderBase]: For 172613/172615 co-relation queries the response was YES. [2024-06-28 00:36:17,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34006 conditions, 4613 events. 2978/4613 cut-off events. For 172613/172615 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 25275 event pairs, 731 based on Foata normal form. 4/4616 useless extension candidates. Maximal degree in co-relation 33895. Up to 4509 conditions per place. [2024-06-28 00:36:17,564 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 329 selfloop transitions, 47 changer transitions 0/379 dead transitions. [2024-06-28 00:36:17,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 379 transitions, 6685 flow [2024-06-28 00:36:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:36:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:36:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 00:36:17,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 00:36:17,565 INFO L175 Difference]: Start difference. First operand has 221 places, 346 transitions, 5559 flow. Second operand 9 states and 143 transitions. [2024-06-28 00:36:17,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 379 transitions, 6685 flow [2024-06-28 00:36:17,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 379 transitions, 6521 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 00:36:17,950 INFO L231 Difference]: Finished difference. Result has 231 places, 359 transitions, 5789 flow [2024-06-28 00:36:17,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5418, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5789, PETRI_PLACES=231, PETRI_TRANSITIONS=359} [2024-06-28 00:36:17,951 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 191 predicate places. [2024-06-28 00:36:17,951 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 359 transitions, 5789 flow [2024-06-28 00:36:17,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:17,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:17,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:17,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:36:17,952 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:17,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash 68321002, now seen corresponding path program 1 times [2024-06-28 00:36:17,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704528020] [2024-06-28 00:36:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:20,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:20,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704528020] [2024-06-28 00:36:20,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704528020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:20,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:20,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:36:20,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813839716] [2024-06-28 00:36:20,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:20,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:36:20,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:20,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:36:20,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:36:20,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:20,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 359 transitions, 5789 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:20,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:20,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:20,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:21,417 INFO L124 PetriNetUnfolderBase]: 2973/4607 cut-off events. [2024-06-28 00:36:21,417 INFO L125 PetriNetUnfolderBase]: For 173507/173507 co-relation queries the response was YES. [2024-06-28 00:36:21,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33679 conditions, 4607 events. 2973/4607 cut-off events. For 173507/173507 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 25243 event pairs, 855 based on Foata normal form. 2/4608 useless extension candidates. Maximal degree in co-relation 33563. Up to 4554 conditions per place. [2024-06-28 00:36:21,468 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 351 selfloop transitions, 17 changer transitions 0/371 dead transitions. [2024-06-28 00:36:21,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 371 transitions, 6581 flow [2024-06-28 00:36:21,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:36:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:36:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-28 00:36:21,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2024-06-28 00:36:21,470 INFO L175 Difference]: Start difference. First operand has 231 places, 359 transitions, 5789 flow. Second operand 8 states and 114 transitions. [2024-06-28 00:36:21,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 371 transitions, 6581 flow [2024-06-28 00:36:21,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 371 transitions, 6445 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 00:36:21,884 INFO L231 Difference]: Finished difference. Result has 237 places, 361 transitions, 5722 flow [2024-06-28 00:36:21,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5653, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5722, PETRI_PLACES=237, PETRI_TRANSITIONS=361} [2024-06-28 00:36:21,885 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 197 predicate places. [2024-06-28 00:36:21,885 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 361 transitions, 5722 flow [2024-06-28 00:36:21,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:21,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:21,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:21,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:36:21,886 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:21,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:21,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1816106236, now seen corresponding path program 1 times [2024-06-28 00:36:21,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:21,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030624993] [2024-06-28 00:36:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:21,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:23,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:23,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030624993] [2024-06-28 00:36:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030624993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:23,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:23,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:36:23,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369350477] [2024-06-28 00:36:23,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:23,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:36:23,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:23,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:36:23,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:36:23,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:23,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 361 transitions, 5722 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:23,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:23,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:23,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:24,375 INFO L124 PetriNetUnfolderBase]: 3197/4927 cut-off events. [2024-06-28 00:36:24,375 INFO L125 PetriNetUnfolderBase]: For 208280/208282 co-relation queries the response was YES. [2024-06-28 00:36:24,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37183 conditions, 4927 events. 3197/4927 cut-off events. For 208280/208282 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 27149 event pairs, 850 based on Foata normal form. 8/4934 useless extension candidates. Maximal degree in co-relation 37064. Up to 4273 conditions per place. [2024-06-28 00:36:24,433 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 282 selfloop transitions, 137 changer transitions 0/422 dead transitions. [2024-06-28 00:36:24,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 422 transitions, 7461 flow [2024-06-28 00:36:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:36:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:36:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 00:36:24,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 00:36:24,434 INFO L175 Difference]: Start difference. First operand has 237 places, 361 transitions, 5722 flow. Second operand 7 states and 130 transitions. [2024-06-28 00:36:24,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 422 transitions, 7461 flow [2024-06-28 00:36:24,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 422 transitions, 7393 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:36:24,949 INFO L231 Difference]: Finished difference. Result has 240 places, 394 transitions, 6679 flow [2024-06-28 00:36:24,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5654, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6679, PETRI_PLACES=240, PETRI_TRANSITIONS=394} [2024-06-28 00:36:24,949 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 200 predicate places. [2024-06-28 00:36:24,949 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 394 transitions, 6679 flow [2024-06-28 00:36:24,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:24,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:24,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:24,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:36:24,950 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:24,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:24,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1107100538, now seen corresponding path program 2 times [2024-06-28 00:36:24,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:24,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896586295] [2024-06-28 00:36:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:26,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:26,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896586295] [2024-06-28 00:36:26,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896586295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:26,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:26,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:36:26,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690398732] [2024-06-28 00:36:26,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:26,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:36:26,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:26,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:36:26,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:36:26,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:26,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 394 transitions, 6679 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:26,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:26,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:26,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:27,644 INFO L124 PetriNetUnfolderBase]: 3173/4889 cut-off events. [2024-06-28 00:36:27,644 INFO L125 PetriNetUnfolderBase]: For 215969/215969 co-relation queries the response was YES. [2024-06-28 00:36:27,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38758 conditions, 4889 events. 3173/4889 cut-off events. For 215969/215969 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 26882 event pairs, 876 based on Foata normal form. 6/4894 useless extension candidates. Maximal degree in co-relation 38636. Up to 4770 conditions per place. [2024-06-28 00:36:27,701 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 360 selfloop transitions, 48 changer transitions 0/411 dead transitions. [2024-06-28 00:36:27,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 411 transitions, 7576 flow [2024-06-28 00:36:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:36:27,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:36:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 00:36:27,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 00:36:27,708 INFO L175 Difference]: Start difference. First operand has 240 places, 394 transitions, 6679 flow. Second operand 8 states and 130 transitions. [2024-06-28 00:36:27,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 411 transitions, 7576 flow [2024-06-28 00:36:28,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 411 transitions, 7341 flow, removed 116 selfloop flow, removed 1 redundant places. [2024-06-28 00:36:28,336 INFO L231 Difference]: Finished difference. Result has 248 places, 395 transitions, 6583 flow [2024-06-28 00:36:28,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6444, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6583, PETRI_PLACES=248, PETRI_TRANSITIONS=395} [2024-06-28 00:36:28,337 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 208 predicate places. [2024-06-28 00:36:28,337 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 395 transitions, 6583 flow [2024-06-28 00:36:28,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:28,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:28,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:28,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:36:28,338 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:28,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:28,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1819919484, now seen corresponding path program 1 times [2024-06-28 00:36:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:28,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354891455] [2024-06-28 00:36:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:28,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:30,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:30,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354891455] [2024-06-28 00:36:30,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354891455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:30,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:30,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:36:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344575374] [2024-06-28 00:36:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:30,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:36:30,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:30,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:36:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:36:30,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:30,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 395 transitions, 6583 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:30,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:30,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:30,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:31,568 INFO L124 PetriNetUnfolderBase]: 3228/4968 cut-off events. [2024-06-28 00:36:31,568 INFO L125 PetriNetUnfolderBase]: For 224433/224435 co-relation queries the response was YES. [2024-06-28 00:36:31,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39233 conditions, 4968 events. 3228/4968 cut-off events. For 224433/224435 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 27376 event pairs, 876 based on Foata normal form. 5/4972 useless extension candidates. Maximal degree in co-relation 39107. Up to 4520 conditions per place. [2024-06-28 00:36:31,630 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 307 selfloop transitions, 132 changer transitions 0/442 dead transitions. [2024-06-28 00:36:31,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 442 transitions, 8094 flow [2024-06-28 00:36:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:36:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:36:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 00:36:31,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-28 00:36:31,632 INFO L175 Difference]: Start difference. First operand has 248 places, 395 transitions, 6583 flow. Second operand 8 states and 147 transitions. [2024-06-28 00:36:31,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 442 transitions, 8094 flow [2024-06-28 00:36:32,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 442 transitions, 8026 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:36:32,200 INFO L231 Difference]: Finished difference. Result has 254 places, 414 transitions, 7203 flow [2024-06-28 00:36:32,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6515, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7203, PETRI_PLACES=254, PETRI_TRANSITIONS=414} [2024-06-28 00:36:32,201 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 214 predicate places. [2024-06-28 00:36:32,201 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 414 transitions, 7203 flow [2024-06-28 00:36:32,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:32,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:32,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:32,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:36:32,201 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:32,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1578884722, now seen corresponding path program 1 times [2024-06-28 00:36:32,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:32,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845083458] [2024-06-28 00:36:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:32,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845083458] [2024-06-28 00:36:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845083458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:33,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:33,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:36:33,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784906247] [2024-06-28 00:36:33,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:33,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:36:33,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:33,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:36:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:36:34,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:34,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 414 transitions, 7203 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:34,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:34,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:34,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:35,386 INFO L124 PetriNetUnfolderBase]: 3392/5196 cut-off events. [2024-06-28 00:36:35,387 INFO L125 PetriNetUnfolderBase]: For 261953/261955 co-relation queries the response was YES. [2024-06-28 00:36:35,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43550 conditions, 5196 events. 3392/5196 cut-off events. For 261953/261955 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 28700 event pairs, 845 based on Foata normal form. 8/5203 useless extension candidates. Maximal degree in co-relation 43419. Up to 4330 conditions per place. [2024-06-28 00:36:35,449 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 320 selfloop transitions, 138 changer transitions 0/461 dead transitions. [2024-06-28 00:36:35,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 461 transitions, 8892 flow [2024-06-28 00:36:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:36:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:36:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 00:36:35,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415954415954416 [2024-06-28 00:36:35,451 INFO L175 Difference]: Start difference. First operand has 254 places, 414 transitions, 7203 flow. Second operand 9 states and 155 transitions. [2024-06-28 00:36:35,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 461 transitions, 8892 flow [2024-06-28 00:36:35,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 461 transitions, 8837 flow, removed 26 selfloop flow, removed 1 redundant places. [2024-06-28 00:36:35,958 INFO L231 Difference]: Finished difference. Result has 264 places, 433 transitions, 7905 flow [2024-06-28 00:36:35,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7148, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7905, PETRI_PLACES=264, PETRI_TRANSITIONS=433} [2024-06-28 00:36:35,959 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2024-06-28 00:36:35,959 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 433 transitions, 7905 flow [2024-06-28 00:36:35,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:35,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:35,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:35,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:36:35,960 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:35,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1811636904, now seen corresponding path program 2 times [2024-06-28 00:36:35,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:35,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058989215] [2024-06-28 00:36:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:35,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:37,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:37,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058989215] [2024-06-28 00:36:37,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058989215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:37,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:37,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:36:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337594272] [2024-06-28 00:36:37,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:37,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:36:37,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:37,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:36:37,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:36:37,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:37,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 433 transitions, 7905 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:37,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:37,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:37,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:39,261 INFO L124 PetriNetUnfolderBase]: 3424/5242 cut-off events. [2024-06-28 00:36:39,261 INFO L125 PetriNetUnfolderBase]: For 277242/277244 co-relation queries the response was YES. [2024-06-28 00:36:39,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45464 conditions, 5242 events. 3424/5242 cut-off events. For 277242/277244 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28959 event pairs, 878 based on Foata normal form. 6/5247 useless extension candidates. Maximal degree in co-relation 45328. Up to 4671 conditions per place. [2024-06-28 00:36:39,319 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 303 selfloop transitions, 167 changer transitions 0/473 dead transitions. [2024-06-28 00:36:39,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 473 transitions, 9529 flow [2024-06-28 00:36:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:36:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:36:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 00:36:39,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-28 00:36:39,320 INFO L175 Difference]: Start difference. First operand has 264 places, 433 transitions, 7905 flow. Second operand 8 states and 142 transitions. [2024-06-28 00:36:39,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 473 transitions, 9529 flow [2024-06-28 00:36:39,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 473 transitions, 9405 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-28 00:36:39,927 INFO L231 Difference]: Finished difference. Result has 271 places, 450 transitions, 8641 flow [2024-06-28 00:36:39,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7781, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8641, PETRI_PLACES=271, PETRI_TRANSITIONS=450} [2024-06-28 00:36:39,927 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 231 predicate places. [2024-06-28 00:36:39,928 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 450 transitions, 8641 flow [2024-06-28 00:36:39,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:39,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:39,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:39,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:36:39,928 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:39,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:39,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1811348294, now seen corresponding path program 2 times [2024-06-28 00:36:39,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:39,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574519098] [2024-06-28 00:36:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:39,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:41,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:41,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574519098] [2024-06-28 00:36:41,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574519098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:41,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:41,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:36:41,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375110556] [2024-06-28 00:36:41,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:41,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:36:41,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:36:41,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:36:41,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:41,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 450 transitions, 8641 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:41,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:41,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:41,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:43,386 INFO L124 PetriNetUnfolderBase]: 3576/5447 cut-off events. [2024-06-28 00:36:43,386 INFO L125 PetriNetUnfolderBase]: For 311783/311783 co-relation queries the response was YES. [2024-06-28 00:36:43,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49396 conditions, 5447 events. 3576/5447 cut-off events. For 311783/311783 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 30040 event pairs, 895 based on Foata normal form. 6/5452 useless extension candidates. Maximal degree in co-relation 49257. Up to 5179 conditions per place. [2024-06-28 00:36:43,461 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 429 selfloop transitions, 60 changer transitions 0/492 dead transitions. [2024-06-28 00:36:43,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 492 transitions, 10272 flow [2024-06-28 00:36:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:36:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:36:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 00:36:43,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 00:36:43,462 INFO L175 Difference]: Start difference. First operand has 271 places, 450 transitions, 8641 flow. Second operand 9 states and 153 transitions. [2024-06-28 00:36:43,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 492 transitions, 10272 flow [2024-06-28 00:36:44,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 492 transitions, 10063 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 00:36:44,217 INFO L231 Difference]: Finished difference. Result has 277 places, 466 transitions, 8913 flow [2024-06-28 00:36:44,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8432, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8913, PETRI_PLACES=277, PETRI_TRANSITIONS=466} [2024-06-28 00:36:44,217 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-28 00:36:44,218 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 466 transitions, 8913 flow [2024-06-28 00:36:44,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:44,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:44,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:44,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:36:44,218 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:44,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:44,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1587226822, now seen corresponding path program 3 times [2024-06-28 00:36:44,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:44,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742607013] [2024-06-28 00:36:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:44,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:45,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:45,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742607013] [2024-06-28 00:36:45,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742607013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:45,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:45,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:36:45,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117220254] [2024-06-28 00:36:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:45,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:36:45,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:45,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:36:45,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:36:46,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:46,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 466 transitions, 8913 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:46,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:46,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:46,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:47,648 INFO L124 PetriNetUnfolderBase]: 3566/5435 cut-off events. [2024-06-28 00:36:47,649 INFO L125 PetriNetUnfolderBase]: For 316209/316209 co-relation queries the response was YES. [2024-06-28 00:36:47,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49146 conditions, 5435 events. 3566/5435 cut-off events. For 316209/316209 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 29950 event pairs, 898 based on Foata normal form. 6/5440 useless extension candidates. Maximal degree in co-relation 49006. Up to 5176 conditions per place. [2024-06-28 00:36:47,726 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 428 selfloop transitions, 59 changer transitions 0/490 dead transitions. [2024-06-28 00:36:47,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 490 transitions, 10112 flow [2024-06-28 00:36:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:36:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:36:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 00:36:47,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-06-28 00:36:47,727 INFO L175 Difference]: Start difference. First operand has 277 places, 466 transitions, 8913 flow. Second operand 10 states and 162 transitions. [2024-06-28 00:36:47,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 490 transitions, 10112 flow [2024-06-28 00:36:48,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 490 transitions, 9971 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-06-28 00:36:48,673 INFO L231 Difference]: Finished difference. Result has 285 places, 466 transitions, 8898 flow [2024-06-28 00:36:48,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8772, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8898, PETRI_PLACES=285, PETRI_TRANSITIONS=466} [2024-06-28 00:36:48,673 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 245 predicate places. [2024-06-28 00:36:48,673 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 466 transitions, 8898 flow [2024-06-28 00:36:48,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:48,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:48,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:48,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:36:48,674 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:48,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1587216282, now seen corresponding path program 3 times [2024-06-28 00:36:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:48,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117630760] [2024-06-28 00:36:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:50,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:50,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117630760] [2024-06-28 00:36:50,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117630760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:50,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:50,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:36:50,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365912833] [2024-06-28 00:36:50,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:50,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:36:50,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:50,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:36:50,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:36:50,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:50,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 466 transitions, 8898 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:50,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:50,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:50,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:51,765 INFO L124 PetriNetUnfolderBase]: 3581/5456 cut-off events. [2024-06-28 00:36:51,766 INFO L125 PetriNetUnfolderBase]: For 320842/320842 co-relation queries the response was YES. [2024-06-28 00:36:51,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49187 conditions, 5456 events. 3581/5456 cut-off events. For 320842/320842 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 30081 event pairs, 936 based on Foata normal form. 3/5458 useless extension candidates. Maximal degree in co-relation 49045. Up to 5350 conditions per place. [2024-06-28 00:36:51,841 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 440 selfloop transitions, 44 changer transitions 0/487 dead transitions. [2024-06-28 00:36:51,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 487 transitions, 10005 flow [2024-06-28 00:36:51,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:36:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:36:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 00:36:51,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396011396011396 [2024-06-28 00:36:51,843 INFO L175 Difference]: Start difference. First operand has 285 places, 466 transitions, 8898 flow. Second operand 9 states and 139 transitions. [2024-06-28 00:36:51,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 487 transitions, 10005 flow [2024-06-28 00:36:52,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 487 transitions, 9830 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 00:36:52,641 INFO L231 Difference]: Finished difference. Result has 288 places, 472 transitions, 8938 flow [2024-06-28 00:36:52,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8723, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8938, PETRI_PLACES=288, PETRI_TRANSITIONS=472} [2024-06-28 00:36:52,642 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 248 predicate places. [2024-06-28 00:36:52,642 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 472 transitions, 8938 flow [2024-06-28 00:36:52,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:52,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:52,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:52,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:36:52,642 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:52,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:52,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1848672946, now seen corresponding path program 3 times [2024-06-28 00:36:52,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:52,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915668831] [2024-06-28 00:36:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:52,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:53,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:53,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915668831] [2024-06-28 00:36:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915668831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:53,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:53,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:36:53,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436931905] [2024-06-28 00:36:53,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:53,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:36:53,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:53,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:36:53,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:36:53,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:53,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 472 transitions, 8938 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:53,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:53,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:53,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:55,241 INFO L124 PetriNetUnfolderBase]: 3588/5461 cut-off events. [2024-06-28 00:36:55,242 INFO L125 PetriNetUnfolderBase]: For 328846/328846 co-relation queries the response was YES. [2024-06-28 00:36:55,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49235 conditions, 5461 events. 3588/5461 cut-off events. For 328846/328846 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 30092 event pairs, 952 based on Foata normal form. 3/5463 useless extension candidates. Maximal degree in co-relation 49090. Up to 5346 conditions per place. [2024-06-28 00:36:55,332 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 450 selfloop transitions, 44 changer transitions 0/497 dead transitions. [2024-06-28 00:36:55,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 497 transitions, 10293 flow [2024-06-28 00:36:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:36:55,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:36:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 00:36:55,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 00:36:55,334 INFO L175 Difference]: Start difference. First operand has 288 places, 472 transitions, 8938 flow. Second operand 7 states and 117 transitions. [2024-06-28 00:36:55,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 497 transitions, 10293 flow [2024-06-28 00:36:56,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 497 transitions, 10185 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:36:56,099 INFO L231 Difference]: Finished difference. Result has 289 places, 477 transitions, 9066 flow [2024-06-28 00:36:56,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8830, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9066, PETRI_PLACES=289, PETRI_TRANSITIONS=477} [2024-06-28 00:36:56,099 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 249 predicate places. [2024-06-28 00:36:56,099 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 477 transitions, 9066 flow [2024-06-28 00:36:56,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:56,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:56,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:56,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:36:56,100 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:56,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:56,100 INFO L85 PathProgramCache]: Analyzing trace with hash 226975454, now seen corresponding path program 4 times [2024-06-28 00:36:56,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:56,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099566850] [2024-06-28 00:36:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:56,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:36:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:36:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:36:57,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099566850] [2024-06-28 00:36:57,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099566850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:36:57,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:36:57,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:36:57,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337810852] [2024-06-28 00:36:57,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:36:57,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:36:57,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:36:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:36:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:36:57,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:36:57,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 477 transitions, 9066 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:57,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:36:57,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:36:57,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:36:58,687 INFO L124 PetriNetUnfolderBase]: 3582/5452 cut-off events. [2024-06-28 00:36:58,687 INFO L125 PetriNetUnfolderBase]: For 335309/335309 co-relation queries the response was YES. [2024-06-28 00:36:58,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49203 conditions, 5452 events. 3582/5452 cut-off events. For 335309/335309 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 30012 event pairs, 954 based on Foata normal form. 2/5453 useless extension candidates. Maximal degree in co-relation 49057. Up to 5390 conditions per place. [2024-06-28 00:36:58,757 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 464 selfloop transitions, 23 changer transitions 0/490 dead transitions. [2024-06-28 00:36:58,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 490 transitions, 10100 flow [2024-06-28 00:36:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:36:58,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:36:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-28 00:36:58,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065934065934066 [2024-06-28 00:36:58,758 INFO L175 Difference]: Start difference. First operand has 289 places, 477 transitions, 9066 flow. Second operand 7 states and 111 transitions. [2024-06-28 00:36:58,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 490 transitions, 10100 flow [2024-06-28 00:36:59,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 490 transitions, 9942 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 00:36:59,527 INFO L231 Difference]: Finished difference. Result has 292 places, 477 transitions, 8962 flow [2024-06-28 00:36:59,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8908, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8962, PETRI_PLACES=292, PETRI_TRANSITIONS=477} [2024-06-28 00:36:59,528 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 252 predicate places. [2024-06-28 00:36:59,528 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 477 transitions, 8962 flow [2024-06-28 00:36:59,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:36:59,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:36:59,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:36:59,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:36:59,528 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:36:59,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:36:59,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1496776044, now seen corresponding path program 5 times [2024-06-28 00:36:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:36:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536782306] [2024-06-28 00:36:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:36:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:36:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:00,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536782306] [2024-06-28 00:37:00,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536782306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:00,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:00,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:37:00,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949842644] [2024-06-28 00:37:00,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:00,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:37:00,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:00,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:37:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:37:00,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:00,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 477 transitions, 8962 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:00,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:00,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:00,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:02,198 INFO L124 PetriNetUnfolderBase]: 3570/5436 cut-off events. [2024-06-28 00:37:02,198 INFO L125 PetriNetUnfolderBase]: For 341233/341233 co-relation queries the response was YES. [2024-06-28 00:37:02,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48888 conditions, 5436 events. 3570/5436 cut-off events. For 341233/341233 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29902 event pairs, 951 based on Foata normal form. 4/5439 useless extension candidates. Maximal degree in co-relation 48741. Up to 5350 conditions per place. [2024-06-28 00:37:02,275 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 457 selfloop transitions, 31 changer transitions 0/491 dead transitions. [2024-06-28 00:37:02,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 491 transitions, 10127 flow [2024-06-28 00:37:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:37:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:37:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 00:37:02,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-28 00:37:02,277 INFO L175 Difference]: Start difference. First operand has 292 places, 477 transitions, 8962 flow. Second operand 8 states and 123 transitions. [2024-06-28 00:37:02,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 491 transitions, 10127 flow [2024-06-28 00:37:03,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 491 transitions, 10023 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 00:37:03,211 INFO L231 Difference]: Finished difference. Result has 294 places, 477 transitions, 8931 flow [2024-06-28 00:37:03,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8931, PETRI_PLACES=294, PETRI_TRANSITIONS=477} [2024-06-28 00:37:03,211 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 254 predicate places. [2024-06-28 00:37:03,211 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 477 transitions, 8931 flow [2024-06-28 00:37:03,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:03,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:03,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:03,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:37:03,212 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:03,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:03,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1565997978, now seen corresponding path program 6 times [2024-06-28 00:37:03,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:03,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392397682] [2024-06-28 00:37:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:03,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:04,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:04,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392397682] [2024-06-28 00:37:04,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392397682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:04,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:04,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:37:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016956199] [2024-06-28 00:37:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:37:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:37:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:37:04,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:04,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 477 transitions, 8931 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:04,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:04,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:04,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:05,961 INFO L124 PetriNetUnfolderBase]: 3585/5457 cut-off events. [2024-06-28 00:37:05,962 INFO L125 PetriNetUnfolderBase]: For 352458/352458 co-relation queries the response was YES. [2024-06-28 00:37:06,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49163 conditions, 5457 events. 3585/5457 cut-off events. For 352458/352458 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30049 event pairs, 952 based on Foata normal form. 6/5462 useless extension candidates. Maximal degree in co-relation 49016. Up to 5387 conditions per place. [2024-06-28 00:37:06,036 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 466 selfloop transitions, 26 changer transitions 0/495 dead transitions. [2024-06-28 00:37:06,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 495 transitions, 10089 flow [2024-06-28 00:37:06,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:37:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:37:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-28 00:37:06,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782051282051282 [2024-06-28 00:37:06,037 INFO L175 Difference]: Start difference. First operand has 294 places, 477 transitions, 8931 flow. Second operand 8 states and 118 transitions. [2024-06-28 00:37:06,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 495 transitions, 10089 flow [2024-06-28 00:37:06,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 495 transitions, 9977 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-28 00:37:06,896 INFO L231 Difference]: Finished difference. Result has 299 places, 483 transitions, 9011 flow [2024-06-28 00:37:06,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8819, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9011, PETRI_PLACES=299, PETRI_TRANSITIONS=483} [2024-06-28 00:37:06,897 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2024-06-28 00:37:06,897 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 483 transitions, 9011 flow [2024-06-28 00:37:06,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:06,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:06,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:06,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:37:06,898 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:06,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:06,898 INFO L85 PathProgramCache]: Analyzing trace with hash -334308166, now seen corresponding path program 4 times [2024-06-28 00:37:06,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:06,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688435024] [2024-06-28 00:37:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:06,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:08,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:08,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688435024] [2024-06-28 00:37:08,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688435024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:08,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:08,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:37:08,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289335303] [2024-06-28 00:37:08,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:08,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:37:08,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:08,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:37:08,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:37:08,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:08,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 483 transitions, 9011 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:08,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:08,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:08,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:10,461 INFO L124 PetriNetUnfolderBase]: 3775/5719 cut-off events. [2024-06-28 00:37:10,461 INFO L125 PetriNetUnfolderBase]: For 398655/398655 co-relation queries the response was YES. [2024-06-28 00:37:10,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53073 conditions, 5719 events. 3775/5719 cut-off events. For 398655/398655 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 31507 event pairs, 964 based on Foata normal form. 6/5724 useless extension candidates. Maximal degree in co-relation 52924. Up to 5338 conditions per place. [2024-06-28 00:37:10,531 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 455 selfloop transitions, 64 changer transitions 0/522 dead transitions. [2024-06-28 00:37:10,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 522 transitions, 10790 flow [2024-06-28 00:37:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:37:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:37:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:37:10,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-06-28 00:37:10,533 INFO L175 Difference]: Start difference. First operand has 299 places, 483 transitions, 9011 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:37:10,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 522 transitions, 10790 flow [2024-06-28 00:37:11,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 522 transitions, 10708 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 00:37:11,543 INFO L231 Difference]: Finished difference. Result has 307 places, 501 transitions, 9556 flow [2024-06-28 00:37:11,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8929, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9556, PETRI_PLACES=307, PETRI_TRANSITIONS=501} [2024-06-28 00:37:11,543 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 267 predicate places. [2024-06-28 00:37:11,544 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 501 transitions, 9556 flow [2024-06-28 00:37:11,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:11,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:11,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:11,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:37:11,544 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:11,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:11,545 INFO L85 PathProgramCache]: Analyzing trace with hash -321917404, now seen corresponding path program 1 times [2024-06-28 00:37:11,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:11,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864216965] [2024-06-28 00:37:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:11,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:13,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:13,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864216965] [2024-06-28 00:37:13,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864216965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:13,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:13,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:37:13,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909212636] [2024-06-28 00:37:13,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:13,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:37:13,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:13,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:37:13,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:37:13,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:13,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 501 transitions, 9556 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:13,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:13,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:13,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:14,964 INFO L124 PetriNetUnfolderBase]: 3772/5715 cut-off events. [2024-06-28 00:37:14,965 INFO L125 PetriNetUnfolderBase]: For 405863/405863 co-relation queries the response was YES. [2024-06-28 00:37:15,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53775 conditions, 5715 events. 3772/5715 cut-off events. For 405863/405863 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 31542 event pairs, 1003 based on Foata normal form. 1/5715 useless extension candidates. Maximal degree in co-relation 53623. Up to 5659 conditions per place. [2024-06-28 00:37:15,036 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 490 selfloop transitions, 21 changer transitions 0/514 dead transitions. [2024-06-28 00:37:15,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 514 transitions, 10680 flow [2024-06-28 00:37:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:37:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:37:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-28 00:37:15,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3685897435897436 [2024-06-28 00:37:15,038 INFO L175 Difference]: Start difference. First operand has 307 places, 501 transitions, 9556 flow. Second operand 8 states and 115 transitions. [2024-06-28 00:37:15,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 514 transitions, 10680 flow [2024-06-28 00:37:16,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 514 transitions, 10493 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-06-28 00:37:16,259 INFO L231 Difference]: Finished difference. Result has 311 places, 504 transitions, 9495 flow [2024-06-28 00:37:16,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9369, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9495, PETRI_PLACES=311, PETRI_TRANSITIONS=504} [2024-06-28 00:37:16,260 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 271 predicate places. [2024-06-28 00:37:16,260 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 504 transitions, 9495 flow [2024-06-28 00:37:16,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:16,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:16,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:16,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:37:16,261 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:16,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:16,261 INFO L85 PathProgramCache]: Analyzing trace with hash 403934986, now seen corresponding path program 5 times [2024-06-28 00:37:16,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:16,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212234375] [2024-06-28 00:37:16,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:16,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:17,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:17,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212234375] [2024-06-28 00:37:17,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212234375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:17,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:17,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:37:17,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222084350] [2024-06-28 00:37:17,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:17,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:37:17,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:17,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:37:17,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:37:17,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:17,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 504 transitions, 9495 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:17,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:17,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:17,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:19,657 INFO L124 PetriNetUnfolderBase]: 3813/5774 cut-off events. [2024-06-28 00:37:19,657 INFO L125 PetriNetUnfolderBase]: For 419113/419113 co-relation queries the response was YES. [2024-06-28 00:37:19,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53976 conditions, 5774 events. 3813/5774 cut-off events. For 419113/419113 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 31825 event pairs, 994 based on Foata normal form. 9/5782 useless extension candidates. Maximal degree in co-relation 53822. Up to 5528 conditions per place. [2024-06-28 00:37:19,743 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 479 selfloop transitions, 51 changer transitions 0/533 dead transitions. [2024-06-28 00:37:19,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 533 transitions, 11004 flow [2024-06-28 00:37:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:37:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:37:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 00:37:19,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706293706293706 [2024-06-28 00:37:19,745 INFO L175 Difference]: Start difference. First operand has 311 places, 504 transitions, 9495 flow. Second operand 11 states and 159 transitions. [2024-06-28 00:37:19,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 533 transitions, 11004 flow [2024-06-28 00:37:21,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 533 transitions, 10914 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 00:37:21,346 INFO L231 Difference]: Finished difference. Result has 318 places, 516 transitions, 9837 flow [2024-06-28 00:37:21,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9405, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9837, PETRI_PLACES=318, PETRI_TRANSITIONS=516} [2024-06-28 00:37:21,347 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 278 predicate places. [2024-06-28 00:37:21,347 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 516 transitions, 9837 flow [2024-06-28 00:37:21,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:21,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:21,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:21,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:37:21,347 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:21,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash -334297936, now seen corresponding path program 6 times [2024-06-28 00:37:21,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:21,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909258432] [2024-06-28 00:37:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:21,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:23,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:23,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909258432] [2024-06-28 00:37:23,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909258432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:23,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:23,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:37:23,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097281297] [2024-06-28 00:37:23,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:23,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:37:23,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:23,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:37:23,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:37:23,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:23,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 516 transitions, 9837 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:23,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:23,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:23,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:24,897 INFO L124 PetriNetUnfolderBase]: 3803/5762 cut-off events. [2024-06-28 00:37:24,898 INFO L125 PetriNetUnfolderBase]: For 426047/426047 co-relation queries the response was YES. [2024-06-28 00:37:24,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54770 conditions, 5762 events. 3803/5762 cut-off events. For 426047/426047 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 31834 event pairs, 988 based on Foata normal form. 6/5767 useless extension candidates. Maximal degree in co-relation 54613. Up to 5399 conditions per place. [2024-06-28 00:37:24,980 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 476 selfloop transitions, 58 changer transitions 0/537 dead transitions. [2024-06-28 00:37:24,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 537 transitions, 11270 flow [2024-06-28 00:37:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:37:24,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:37:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:37:24,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-06-28 00:37:24,981 INFO L175 Difference]: Start difference. First operand has 318 places, 516 transitions, 9837 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:37:24,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 537 transitions, 11270 flow [2024-06-28 00:37:26,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 537 transitions, 11005 flow, removed 121 selfloop flow, removed 6 redundant places. [2024-06-28 00:37:26,392 INFO L231 Difference]: Finished difference. Result has 322 places, 516 transitions, 9696 flow [2024-06-28 00:37:26,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9572, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9696, PETRI_PLACES=322, PETRI_TRANSITIONS=516} [2024-06-28 00:37:26,392 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 282 predicate places. [2024-06-28 00:37:26,392 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 516 transitions, 9696 flow [2024-06-28 00:37:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:26,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:26,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:26,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:37:26,393 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:26,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:26,393 INFO L85 PathProgramCache]: Analyzing trace with hash -334308476, now seen corresponding path program 4 times [2024-06-28 00:37:26,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:26,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079900434] [2024-06-28 00:37:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:26,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:28,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:28,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079900434] [2024-06-28 00:37:28,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079900434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:28,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:28,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:37:28,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855293948] [2024-06-28 00:37:28,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:28,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:37:28,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:37:28,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:37:28,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:28,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 516 transitions, 9696 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:28,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:28,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:28,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:29,838 INFO L124 PetriNetUnfolderBase]: 3828/5797 cut-off events. [2024-06-28 00:37:29,839 INFO L125 PetriNetUnfolderBase]: For 432265/432265 co-relation queries the response was YES. [2024-06-28 00:37:29,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54765 conditions, 5797 events. 3828/5797 cut-off events. For 432265/432265 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 32022 event pairs, 1002 based on Foata normal form. 3/5799 useless extension candidates. Maximal degree in co-relation 54606. Up to 5711 conditions per place. [2024-06-28 00:37:29,926 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 501 selfloop transitions, 38 changer transitions 0/542 dead transitions. [2024-06-28 00:37:29,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 542 transitions, 11277 flow [2024-06-28 00:37:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:37:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:37:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 00:37:29,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396011396011396 [2024-06-28 00:37:29,928 INFO L175 Difference]: Start difference. First operand has 322 places, 516 transitions, 9696 flow. Second operand 9 states and 139 transitions. [2024-06-28 00:37:29,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 542 transitions, 11277 flow [2024-06-28 00:37:31,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 542 transitions, 11153 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 00:37:31,333 INFO L231 Difference]: Finished difference. Result has 327 places, 529 transitions, 9950 flow [2024-06-28 00:37:31,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9572, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9950, PETRI_PLACES=327, PETRI_TRANSITIONS=529} [2024-06-28 00:37:31,333 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 287 predicate places. [2024-06-28 00:37:31,334 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 529 transitions, 9950 flow [2024-06-28 00:37:31,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:31,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:31,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:31,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:37:31,334 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:31,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:31,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1223956774, now seen corresponding path program 5 times [2024-06-28 00:37:31,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:31,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243824651] [2024-06-28 00:37:31,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:31,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:32,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:32,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243824651] [2024-06-28 00:37:32,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243824651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:32,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:32,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:37:32,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496375666] [2024-06-28 00:37:32,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:32,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:37:32,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:32,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:37:32,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:37:32,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:32,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 529 transitions, 9950 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) [2024-06-28 00:37:32,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:32,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:32,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:34,562 INFO L124 PetriNetUnfolderBase]: 3972/6016 cut-off events. [2024-06-28 00:37:34,562 INFO L125 PetriNetUnfolderBase]: For 457576/457580 co-relation queries the response was YES. [2024-06-28 00:37:34,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56884 conditions, 6016 events. 3972/6016 cut-off events. For 457576/457580 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 33491 event pairs, 725 based on Foata normal form. 10/6025 useless extension candidates. Maximal degree in co-relation 56722. Up to 4797 conditions per place. [2024-06-28 00:37:34,656 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 350 selfloop transitions, 257 changer transitions 0/610 dead transitions. [2024-06-28 00:37:34,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 610 transitions, 12455 flow [2024-06-28 00:37:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:37:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:37:34,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 00:37:34,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-28 00:37:34,658 INFO L175 Difference]: Start difference. First operand has 327 places, 529 transitions, 9950 flow. Second operand 8 states and 152 transitions. [2024-06-28 00:37:34,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 610 transitions, 12455 flow [2024-06-28 00:37:36,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 610 transitions, 12316 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 00:37:36,161 INFO L231 Difference]: Finished difference. Result has 334 places, 580 transitions, 11581 flow [2024-06-28 00:37:36,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9811, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11581, PETRI_PLACES=334, PETRI_TRANSITIONS=580} [2024-06-28 00:37:36,162 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 294 predicate places. [2024-06-28 00:37:36,162 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 580 transitions, 11581 flow [2024-06-28 00:37:36,162 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) [2024-06-28 00:37:36,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:36,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:36,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:37:36,163 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:36,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1608172422, now seen corresponding path program 6 times [2024-06-28 00:37:36,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:36,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736597844] [2024-06-28 00:37:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:36,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:37,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:37,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736597844] [2024-06-28 00:37:37,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736597844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:37,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:37,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:37:37,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593120424] [2024-06-28 00:37:37,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:37,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:37:37,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:37:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:37:38,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:38,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 580 transitions, 11581 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:38,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:38,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:38,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:40,065 INFO L124 PetriNetUnfolderBase]: 4107/6204 cut-off events. [2024-06-28 00:37:40,065 INFO L125 PetriNetUnfolderBase]: For 488084/488094 co-relation queries the response was YES. [2024-06-28 00:37:40,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61844 conditions, 6204 events. 4107/6204 cut-off events. For 488084/488094 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 34680 event pairs, 819 based on Foata normal form. 11/6214 useless extension candidates. Maximal degree in co-relation 61678. Up to 5632 conditions per place. [2024-06-28 00:37:40,175 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 432 selfloop transitions, 215 changer transitions 0/650 dead transitions. [2024-06-28 00:37:40,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 650 transitions, 14028 flow [2024-06-28 00:37:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:37:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:37:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 00:37:40,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160256410256411 [2024-06-28 00:37:40,192 INFO L175 Difference]: Start difference. First operand has 334 places, 580 transitions, 11581 flow. Second operand 8 states and 161 transitions. [2024-06-28 00:37:40,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 650 transitions, 14028 flow [2024-06-28 00:37:42,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 650 transitions, 13852 flow, removed 80 selfloop flow, removed 2 redundant places. [2024-06-28 00:37:42,223 INFO L231 Difference]: Finished difference. Result has 342 places, 616 transitions, 12669 flow [2024-06-28 00:37:42,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11441, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12669, PETRI_PLACES=342, PETRI_TRANSITIONS=616} [2024-06-28 00:37:42,224 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 302 predicate places. [2024-06-28 00:37:42,224 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 616 transitions, 12669 flow [2024-06-28 00:37:42,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:42,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:42,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:42,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:37:42,225 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:42,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:42,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2141962972, now seen corresponding path program 7 times [2024-06-28 00:37:42,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:42,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485715204] [2024-06-28 00:37:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:42,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:44,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:44,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485715204] [2024-06-28 00:37:44,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485715204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:44,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:44,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:37:44,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767656698] [2024-06-28 00:37:44,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:44,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:37:44,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:44,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:37:44,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:37:44,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:44,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 616 transitions, 12669 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:44,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:44,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:44,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:46,329 INFO L124 PetriNetUnfolderBase]: 4278/6442 cut-off events. [2024-06-28 00:37:46,329 INFO L125 PetriNetUnfolderBase]: For 529322/529336 co-relation queries the response was YES. [2024-06-28 00:37:46,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66008 conditions, 6442 events. 4278/6442 cut-off events. For 529322/529336 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 36007 event pairs, 752 based on Foata normal form. 18/6459 useless extension candidates. Maximal degree in co-relation 65839. Up to 4938 conditions per place. [2024-06-28 00:37:46,423 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 419 selfloop transitions, 259 changer transitions 0/681 dead transitions. [2024-06-28 00:37:46,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 681 transitions, 15242 flow [2024-06-28 00:37:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:37:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:37:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 00:37:46,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-28 00:37:46,424 INFO L175 Difference]: Start difference. First operand has 342 places, 616 transitions, 12669 flow. Second operand 9 states and 168 transitions. [2024-06-28 00:37:46,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 681 transitions, 15242 flow [2024-06-28 00:37:48,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 681 transitions, 15051 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-06-28 00:37:48,138 INFO L231 Difference]: Finished difference. Result has 353 places, 646 transitions, 14007 flow [2024-06-28 00:37:48,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12478, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14007, PETRI_PLACES=353, PETRI_TRANSITIONS=646} [2024-06-28 00:37:48,140 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 313 predicate places. [2024-06-28 00:37:48,140 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 646 transitions, 14007 flow [2024-06-28 00:37:48,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:48,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:48,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:48,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:37:48,141 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:48,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:48,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2140895952, now seen corresponding path program 7 times [2024-06-28 00:37:48,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:48,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342597908] [2024-06-28 00:37:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:48,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:49,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342597908] [2024-06-28 00:37:49,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342597908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:49,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:49,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:37:49,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16260290] [2024-06-28 00:37:49,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:49,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:37:49,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:49,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:37:49,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:37:49,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:37:49,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 646 transitions, 14007 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:49,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:49,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:37:49,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:51,828 INFO L124 PetriNetUnfolderBase]: 4294/6466 cut-off events. [2024-06-28 00:37:51,828 INFO L125 PetriNetUnfolderBase]: For 555013/555027 co-relation queries the response was YES. [2024-06-28 00:37:51,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69074 conditions, 6466 events. 4294/6466 cut-off events. For 555013/555027 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 36212 event pairs, 803 based on Foata normal form. 18/6483 useless extension candidates. Maximal degree in co-relation 68898. Up to 5643 conditions per place. [2024-06-28 00:37:51,938 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 410 selfloop transitions, 268 changer transitions 0/681 dead transitions. [2024-06-28 00:37:51,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 681 transitions, 16140 flow [2024-06-28 00:37:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:37:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:37:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 00:37:51,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274725274725275 [2024-06-28 00:37:51,943 INFO L175 Difference]: Start difference. First operand has 353 places, 646 transitions, 14007 flow. Second operand 7 states and 144 transitions. [2024-06-28 00:37:51,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 681 transitions, 16140 flow [2024-06-28 00:37:54,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 681 transitions, 15983 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-06-28 00:37:54,056 INFO L231 Difference]: Finished difference. Result has 359 places, 657 transitions, 14874 flow [2024-06-28 00:37:54,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=13854, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14874, PETRI_PLACES=359, PETRI_TRANSITIONS=657} [2024-06-28 00:37:54,057 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 319 predicate places. [2024-06-28 00:37:54,061 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 657 transitions, 14874 flow [2024-06-28 00:37:54,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:54,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:37:54,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:37:54,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:37:54,061 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:37:54,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:37:54,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1835262694, now seen corresponding path program 7 times [2024-06-28 00:37:54,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:37:54,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749411446] [2024-06-28 00:37:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:37:54,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:37:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:37:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:37:55,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:37:55,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749411446] [2024-06-28 00:37:55,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749411446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:37:55,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:37:55,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:37:55,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413838162] [2024-06-28 00:37:55,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:37:55,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:37:55,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:37:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:37:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:37:56,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:37:56,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 657 transitions, 14874 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:37:56,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:37:56,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:37:56,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:37:58,183 INFO L124 PetriNetUnfolderBase]: 4306/6481 cut-off events. [2024-06-28 00:37:58,183 INFO L125 PetriNetUnfolderBase]: For 564679/564707 co-relation queries the response was YES. [2024-06-28 00:37:58,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70404 conditions, 6481 events. 4306/6481 cut-off events. For 564679/564707 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36239 event pairs, 837 based on Foata normal form. 20/6500 useless extension candidates. Maximal degree in co-relation 70226. Up to 6070 conditions per place. [2024-06-28 00:37:58,283 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 544 selfloop transitions, 142 changer transitions 0/689 dead transitions. [2024-06-28 00:37:58,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 689 transitions, 16912 flow [2024-06-28 00:37:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:37:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:37:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 00:37:58,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945054945054945 [2024-06-28 00:37:58,285 INFO L175 Difference]: Start difference. First operand has 359 places, 657 transitions, 14874 flow. Second operand 7 states and 135 transitions. [2024-06-28 00:37:58,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 689 transitions, 16912 flow [2024-06-28 00:38:00,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 689 transitions, 16806 flow, removed 44 selfloop flow, removed 1 redundant places. [2024-06-28 00:38:00,394 INFO L231 Difference]: Finished difference. Result has 365 places, 665 transitions, 15274 flow [2024-06-28 00:38:00,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15274, PETRI_PLACES=365, PETRI_TRANSITIONS=665} [2024-06-28 00:38:00,394 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 325 predicate places. [2024-06-28 00:38:00,394 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 665 transitions, 15274 flow [2024-06-28 00:38:00,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:00,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:00,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:00,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:38:00,395 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:00,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1261574234, now seen corresponding path program 8 times [2024-06-28 00:38:00,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:00,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13160774] [2024-06-28 00:38:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:00,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:02,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:02,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13160774] [2024-06-28 00:38:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13160774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:02,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:02,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:38:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542635112] [2024-06-28 00:38:02,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:02,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:38:02,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:38:02,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:38:02,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:38:02,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 665 transitions, 15274 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:02,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:02,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:38:02,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:04,435 INFO L124 PetriNetUnfolderBase]: 4298/6470 cut-off events. [2024-06-28 00:38:04,435 INFO L125 PetriNetUnfolderBase]: For 574237/574239 co-relation queries the response was YES. [2024-06-28 00:38:04,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70732 conditions, 6470 events. 4298/6470 cut-off events. For 574237/574239 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36127 event pairs, 932 based on Foata normal form. 4/6473 useless extension candidates. Maximal degree in co-relation 70552. Up to 6360 conditions per place. [2024-06-28 00:38:04,552 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 634 selfloop transitions, 47 changer transitions 0/684 dead transitions. [2024-06-28 00:38:04,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 684 transitions, 16702 flow [2024-06-28 00:38:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:38:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:38:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:38:04,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045584045584046 [2024-06-28 00:38:04,554 INFO L175 Difference]: Start difference. First operand has 365 places, 665 transitions, 15274 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:38:04,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 684 transitions, 16702 flow [2024-06-28 00:38:06,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 684 transitions, 16353 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 00:38:06,655 INFO L231 Difference]: Finished difference. Result has 370 places, 665 transitions, 15033 flow [2024-06-28 00:38:06,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=14925, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15033, PETRI_PLACES=370, PETRI_TRANSITIONS=665} [2024-06-28 00:38:06,657 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 330 predicate places. [2024-06-28 00:38:06,657 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 665 transitions, 15033 flow [2024-06-28 00:38:06,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:06,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:06,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:06,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:38:06,658 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:06,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:06,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1994347524, now seen corresponding path program 8 times [2024-06-28 00:38:06,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:06,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160031410] [2024-06-28 00:38:06,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:06,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:08,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:08,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160031410] [2024-06-28 00:38:08,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160031410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:08,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:08,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:08,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706753209] [2024-06-28 00:38:08,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:08,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:08,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:08,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:08,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:08,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:38:08,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 665 transitions, 15033 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:08,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:08,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:38:08,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:10,707 INFO L124 PetriNetUnfolderBase]: 4313/6492 cut-off events. [2024-06-28 00:38:10,708 INFO L125 PetriNetUnfolderBase]: For 586925/586938 co-relation queries the response was YES. [2024-06-28 00:38:10,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70759 conditions, 6492 events. 4313/6492 cut-off events. For 586925/586938 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 36332 event pairs, 778 based on Foata normal form. 15/6506 useless extension candidates. Maximal degree in co-relation 70577. Up to 5355 conditions per place. [2024-06-28 00:38:10,818 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 354 selfloop transitions, 343 changer transitions 0/700 dead transitions. [2024-06-28 00:38:10,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 700 transitions, 17071 flow [2024-06-28 00:38:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:38:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:38:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 00:38:10,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-28 00:38:10,819 INFO L175 Difference]: Start difference. First operand has 370 places, 665 transitions, 15033 flow. Second operand 8 states and 160 transitions. [2024-06-28 00:38:10,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 700 transitions, 17071 flow [2024-06-28 00:38:13,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 700 transitions, 17003 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:38:13,100 INFO L231 Difference]: Finished difference. Result has 372 places, 669 transitions, 15796 flow [2024-06-28 00:38:13,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=14965, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15796, PETRI_PLACES=372, PETRI_TRANSITIONS=669} [2024-06-28 00:38:13,101 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 332 predicate places. [2024-06-28 00:38:13,104 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 669 transitions, 15796 flow [2024-06-28 00:38:13,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:13,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:13,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:13,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:38:13,105 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:13,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:13,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1994586844, now seen corresponding path program 8 times [2024-06-28 00:38:13,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:13,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086348760] [2024-06-28 00:38:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:13,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:14,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:14,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086348760] [2024-06-28 00:38:14,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086348760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:14,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:14,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:14,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139233017] [2024-06-28 00:38:14,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:14,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:14,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:14,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:14,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:14,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:38:14,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 669 transitions, 15796 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:14,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:14,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:38:14,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:17,440 INFO L124 PetriNetUnfolderBase]: 4517/6776 cut-off events. [2024-06-28 00:38:17,440 INFO L125 PetriNetUnfolderBase]: For 640261/640274 co-relation queries the response was YES. [2024-06-28 00:38:17,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75659 conditions, 6776 events. 4517/6776 cut-off events. For 640261/640274 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 38088 event pairs, 740 based on Foata normal form. 16/6791 useless extension candidates. Maximal degree in co-relation 75476. Up to 5965 conditions per place. [2024-06-28 00:38:17,544 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 591 selfloop transitions, 214 changer transitions 0/808 dead transitions. [2024-06-28 00:38:17,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 808 transitions, 20464 flow [2024-06-28 00:38:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:38:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:38:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-28 00:38:17,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2024-06-28 00:38:17,546 INFO L175 Difference]: Start difference. First operand has 372 places, 669 transitions, 15796 flow. Second operand 12 states and 206 transitions. [2024-06-28 00:38:17,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 808 transitions, 20464 flow [2024-06-28 00:38:19,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 808 transitions, 19812 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 00:38:19,721 INFO L231 Difference]: Finished difference. Result has 384 places, 757 transitions, 18055 flow [2024-06-28 00:38:19,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=15154, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=18055, PETRI_PLACES=384, PETRI_TRANSITIONS=757} [2024-06-28 00:38:19,721 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 344 predicate places. [2024-06-28 00:38:19,722 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 757 transitions, 18055 flow [2024-06-28 00:38:19,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:19,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:19,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:19,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:38:19,722 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:19,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:19,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1261577892, now seen corresponding path program 9 times [2024-06-28 00:38:19,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:19,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833967895] [2024-06-28 00:38:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:19,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:21,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:21,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833967895] [2024-06-28 00:38:21,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833967895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:21,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:21,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:21,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811510551] [2024-06-28 00:38:21,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:21,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:21,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:21,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:38:21,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 757 transitions, 18055 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:21,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:21,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:38:21,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:24,033 INFO L124 PetriNetUnfolderBase]: 4748/7098 cut-off events. [2024-06-28 00:38:24,033 INFO L125 PetriNetUnfolderBase]: For 746784/746786 co-relation queries the response was YES. [2024-06-28 00:38:24,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82834 conditions, 7098 events. 4748/7098 cut-off events. For 746784/746786 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 39816 event pairs, 889 based on Foata normal form. 8/7105 useless extension candidates. Maximal degree in co-relation 82645. Up to 6671 conditions per place. [2024-06-28 00:38:24,169 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 720 selfloop transitions, 122 changer transitions 0/845 dead transitions. [2024-06-28 00:38:24,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 845 transitions, 21983 flow [2024-06-28 00:38:24,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:38:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:38:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 00:38:24,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 00:38:24,171 INFO L175 Difference]: Start difference. First operand has 384 places, 757 transitions, 18055 flow. Second operand 10 states and 170 transitions. [2024-06-28 00:38:24,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 845 transitions, 21983 flow [2024-06-28 00:38:27,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 845 transitions, 20582 flow, removed 689 selfloop flow, removed 2 redundant places. [2024-06-28 00:38:27,373 INFO L231 Difference]: Finished difference. Result has 394 places, 805 transitions, 18799 flow [2024-06-28 00:38:27,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=17192, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18799, PETRI_PLACES=394, PETRI_TRANSITIONS=805} [2024-06-28 00:38:27,373 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 354 predicate places. [2024-06-28 00:38:27,373 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 805 transitions, 18799 flow [2024-06-28 00:38:27,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:27,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:27,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:27,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:38:27,374 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:27,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:27,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2002918404, now seen corresponding path program 9 times [2024-06-28 00:38:27,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:27,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024852240] [2024-06-28 00:38:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:27,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:29,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:29,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024852240] [2024-06-28 00:38:29,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024852240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:29,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:29,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:29,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28325749] [2024-06-28 00:38:29,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:29,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:29,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:29,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:29,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 00:38:29,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 805 transitions, 18799 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:29,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:29,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 00:38:29,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:31,634 INFO L124 PetriNetUnfolderBase]: 4755/7108 cut-off events. [2024-06-28 00:38:31,635 INFO L125 PetriNetUnfolderBase]: For 719400/719402 co-relation queries the response was YES. [2024-06-28 00:38:31,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80991 conditions, 7108 events. 4755/7108 cut-off events. For 719400/719402 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 39819 event pairs, 912 based on Foata normal form. 5/7112 useless extension candidates. Maximal degree in co-relation 80798. Up to 6964 conditions per place. [2024-06-28 00:38:31,777 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 761 selfloop transitions, 61 changer transitions 0/825 dead transitions. [2024-06-28 00:38:31,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 825 transitions, 20577 flow [2024-06-28 00:38:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:38:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:38:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 00:38:31,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-28 00:38:31,778 INFO L175 Difference]: Start difference. First operand has 394 places, 805 transitions, 18799 flow. Second operand 8 states and 140 transitions. [2024-06-28 00:38:31,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 825 transitions, 20577 flow [2024-06-28 00:38:34,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 825 transitions, 20302 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-06-28 00:38:34,829 INFO L231 Difference]: Finished difference. Result has 397 places, 808 transitions, 18719 flow [2024-06-28 00:38:34,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18524, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18719, PETRI_PLACES=397, PETRI_TRANSITIONS=808} [2024-06-28 00:38:34,833 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 357 predicate places. [2024-06-28 00:38:34,833 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 808 transitions, 18719 flow [2024-06-28 00:38:34,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:34,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:34,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:34,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:38:34,834 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:34,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:34,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2002928944, now seen corresponding path program 10 times [2024-06-28 00:38:34,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:34,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475800198] [2024-06-28 00:38:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:34,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:36,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:36,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475800198] [2024-06-28 00:38:36,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475800198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:36,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:36,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:36,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367019104] [2024-06-28 00:38:36,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:36,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:36,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:37,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:38:37,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 808 transitions, 18719 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:37,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:37,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:38:37,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:39,930 INFO L124 PetriNetUnfolderBase]: 4743/7093 cut-off events. [2024-06-28 00:38:39,930 INFO L125 PetriNetUnfolderBase]: For 721734/721736 co-relation queries the response was YES. [2024-06-28 00:38:40,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80496 conditions, 7093 events. 4743/7093 cut-off events. For 721734/721736 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 39782 event pairs, 888 based on Foata normal form. 8/7100 useless extension candidates. Maximal degree in co-relation 80302. Up to 6676 conditions per place. [2024-06-28 00:38:40,085 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 726 selfloop transitions, 118 changer transitions 0/847 dead transitions. [2024-06-28 00:38:40,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 847 transitions, 20934 flow [2024-06-28 00:38:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:38:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:38:40,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 00:38:40,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195804195804196 [2024-06-28 00:38:40,086 INFO L175 Difference]: Start difference. First operand has 397 places, 808 transitions, 18719 flow. Second operand 11 states and 180 transitions. [2024-06-28 00:38:40,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 847 transitions, 20934 flow [2024-06-28 00:38:43,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 847 transitions, 20779 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 00:38:43,275 INFO L231 Difference]: Finished difference. Result has 404 places, 810 transitions, 18900 flow [2024-06-28 00:38:43,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18564, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18900, PETRI_PLACES=404, PETRI_TRANSITIONS=810} [2024-06-28 00:38:43,276 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 364 predicate places. [2024-06-28 00:38:43,276 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 810 transitions, 18900 flow [2024-06-28 00:38:43,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:43,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:43,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:43,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:38:43,277 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:43,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash -612369916, now seen corresponding path program 1 times [2024-06-28 00:38:43,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:43,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803005456] [2024-06-28 00:38:43,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:43,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:45,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:45,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803005456] [2024-06-28 00:38:45,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803005456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:45,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:45,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:45,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976460548] [2024-06-28 00:38:45,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:45,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:45,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:45,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:45,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:45,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:38:45,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 810 transitions, 18900 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:45,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:45,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:38:45,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:48,510 INFO L124 PetriNetUnfolderBase]: 4825/7221 cut-off events. [2024-06-28 00:38:48,510 INFO L125 PetriNetUnfolderBase]: For 779359/779359 co-relation queries the response was YES. [2024-06-28 00:38:48,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82214 conditions, 7221 events. 4825/7221 cut-off events. For 779359/779359 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 40656 event pairs, 1098 based on Foata normal form. 10/7230 useless extension candidates. Maximal degree in co-relation 82017. Up to 6925 conditions per place. [2024-06-28 00:38:48,621 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 802 selfloop transitions, 37 changer transitions 0/842 dead transitions. [2024-06-28 00:38:48,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 842 transitions, 20982 flow [2024-06-28 00:38:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:38:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:38:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 00:38:48,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 00:38:48,623 INFO L175 Difference]: Start difference. First operand has 404 places, 810 transitions, 18900 flow. Second operand 8 states and 136 transitions. [2024-06-28 00:38:48,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 842 transitions, 20982 flow [2024-06-28 00:38:51,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 842 transitions, 20686 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-28 00:38:51,622 INFO L231 Difference]: Finished difference. Result has 405 places, 812 transitions, 18708 flow [2024-06-28 00:38:51,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18604, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=774, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18708, PETRI_PLACES=405, PETRI_TRANSITIONS=812} [2024-06-28 00:38:51,623 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 365 predicate places. [2024-06-28 00:38:51,623 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 812 transitions, 18708 flow [2024-06-28 00:38:51,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:51,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:51,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:51,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:38:51,624 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:51,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash 226868070, now seen corresponding path program 2 times [2024-06-28 00:38:51,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:51,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481250125] [2024-06-28 00:38:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:51,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:38:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:38:53,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:38:53,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481250125] [2024-06-28 00:38:53,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481250125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:38:53,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:38:53,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:38:53,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314090663] [2024-06-28 00:38:53,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:38:53,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:38:53,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:38:53,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:38:53,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:38:53,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:38:53,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 812 transitions, 18708 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:53,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:38:53,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:38:53,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:38:56,742 INFO L124 PetriNetUnfolderBase]: 4877/7301 cut-off events. [2024-06-28 00:38:56,742 INFO L125 PetriNetUnfolderBase]: For 805908/805908 co-relation queries the response was YES. [2024-06-28 00:38:56,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82444 conditions, 7301 events. 4877/7301 cut-off events. For 805908/805908 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 41185 event pairs, 1144 based on Foata normal form. 14/7314 useless extension candidates. Maximal degree in co-relation 82247. Up to 7110 conditions per place. [2024-06-28 00:38:56,870 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 795 selfloop transitions, 37 changer transitions 0/835 dead transitions. [2024-06-28 00:38:56,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 835 transitions, 20568 flow [2024-06-28 00:38:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:38:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:38:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 00:38:56,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198717948717949 [2024-06-28 00:38:56,871 INFO L175 Difference]: Start difference. First operand has 405 places, 812 transitions, 18708 flow. Second operand 8 states and 131 transitions. [2024-06-28 00:38:56,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 835 transitions, 20568 flow [2024-06-28 00:38:59,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 835 transitions, 20513 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 00:38:59,723 INFO L231 Difference]: Finished difference. Result has 409 places, 814 transitions, 18768 flow [2024-06-28 00:38:59,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18653, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=775, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18768, PETRI_PLACES=409, PETRI_TRANSITIONS=814} [2024-06-28 00:38:59,724 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 369 predicate places. [2024-06-28 00:38:59,724 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 814 transitions, 18768 flow [2024-06-28 00:38:59,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:38:59,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:38:59,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:38:59,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:38:59,725 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:38:59,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:38:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2111272358, now seen corresponding path program 3 times [2024-06-28 00:38:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:38:59,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718169393] [2024-06-28 00:38:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:38:59,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:38:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:39:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:39:01,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:39:01,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718169393] [2024-06-28 00:39:01,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718169393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:39:01,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:39:01,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:39:01,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636863808] [2024-06-28 00:39:01,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:39:01,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:39:01,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:39:01,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:39:01,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:39:01,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:39:01,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 814 transitions, 18768 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:01,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:39:01,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:39:01,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:39:04,336 INFO L124 PetriNetUnfolderBase]: 4890/7324 cut-off events. [2024-06-28 00:39:04,336 INFO L125 PetriNetUnfolderBase]: For 806394/806394 co-relation queries the response was YES. [2024-06-28 00:39:04,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82464 conditions, 7324 events. 4890/7324 cut-off events. For 806394/806394 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 41394 event pairs, 1144 based on Foata normal form. 14/7337 useless extension candidates. Maximal degree in co-relation 82265. Up to 7171 conditions per place. [2024-06-28 00:39:04,471 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 804 selfloop transitions, 25 changer transitions 0/832 dead transitions. [2024-06-28 00:39:04,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 832 transitions, 20578 flow [2024-06-28 00:39:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:39:04,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:39:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 00:39:04,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-28 00:39:04,473 INFO L175 Difference]: Start difference. First operand has 409 places, 814 transitions, 18768 flow. Second operand 8 states and 123 transitions. [2024-06-28 00:39:04,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 832 transitions, 20578 flow [2024-06-28 00:39:07,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 832 transitions, 20505 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:39:07,749 INFO L231 Difference]: Finished difference. Result has 411 places, 815 transitions, 18770 flow [2024-06-28 00:39:07,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18695, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=789, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18770, PETRI_PLACES=411, PETRI_TRANSITIONS=815} [2024-06-28 00:39:07,750 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 371 predicate places. [2024-06-28 00:39:07,750 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 815 transitions, 18770 flow [2024-06-28 00:39:07,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:07,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:39:07,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:39:07,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:39:07,751 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:39:07,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:39:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash -575515818, now seen corresponding path program 1 times [2024-06-28 00:39:07,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:39:07,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727423878] [2024-06-28 00:39:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:39:07,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:39:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:39:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:39:09,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:39:09,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727423878] [2024-06-28 00:39:09,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727423878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:39:09,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:39:09,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:39:09,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842747144] [2024-06-28 00:39:09,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:39:09,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:39:09,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:39:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:39:09,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:39:09,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:39:09,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 815 transitions, 18770 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:09,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:39:09,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:39:09,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:39:11,963 INFO L124 PetriNetUnfolderBase]: 4865/7301 cut-off events. [2024-06-28 00:39:11,963 INFO L125 PetriNetUnfolderBase]: For 786344/786346 co-relation queries the response was YES. [2024-06-28 00:39:12,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81915 conditions, 7301 events. 4865/7301 cut-off events. For 786344/786346 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 41451 event pairs, 1058 based on Foata normal form. 7/7307 useless extension candidates. Maximal degree in co-relation 81715. Up to 6793 conditions per place. [2024-06-28 00:39:12,077 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 664 selfloop transitions, 166 changer transitions 0/833 dead transitions. [2024-06-28 00:39:12,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 833 transitions, 20655 flow [2024-06-28 00:39:12,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:39:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:39:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 00:39:12,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-28 00:39:12,078 INFO L175 Difference]: Start difference. First operand has 411 places, 815 transitions, 18770 flow. Second operand 8 states and 139 transitions. [2024-06-28 00:39:12,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 833 transitions, 20655 flow [2024-06-28 00:39:14,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 833 transitions, 20550 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 00:39:14,513 INFO L231 Difference]: Finished difference. Result has 414 places, 815 transitions, 19036 flow [2024-06-28 00:39:14,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18665, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=815, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19036, PETRI_PLACES=414, PETRI_TRANSITIONS=815} [2024-06-28 00:39:14,513 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 374 predicate places. [2024-06-28 00:39:14,513 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 815 transitions, 19036 flow [2024-06-28 00:39:14,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:14,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:39:14,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:39:14,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:39:14,514 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:39:14,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:39:14,514 INFO L85 PathProgramCache]: Analyzing trace with hash -464717478, now seen corresponding path program 2 times [2024-06-28 00:39:14,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:39:14,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457626407] [2024-06-28 00:39:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:39:14,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:39:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:39:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:39:16,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:39:16,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457626407] [2024-06-28 00:39:16,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457626407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:39:16,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:39:16,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:39:16,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264356539] [2024-06-28 00:39:16,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:39:16,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:39:16,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:39:16,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:39:16,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:39:16,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:39:16,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 815 transitions, 19036 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:16,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:39:16,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:39:16,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:39:18,913 INFO L124 PetriNetUnfolderBase]: 4880/7322 cut-off events. [2024-06-28 00:39:18,913 INFO L125 PetriNetUnfolderBase]: For 820841/820843 co-relation queries the response was YES. [2024-06-28 00:39:19,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83116 conditions, 7322 events. 4880/7322 cut-off events. For 820841/820843 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 41582 event pairs, 1058 based on Foata normal form. 5/7326 useless extension candidates. Maximal degree in co-relation 82914. Up to 6807 conditions per place. [2024-06-28 00:39:19,091 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 682 selfloop transitions, 161 changer transitions 0/846 dead transitions. [2024-06-28 00:39:19,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 846 transitions, 21364 flow [2024-06-28 00:39:19,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:39:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:39:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 00:39:19,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391025641025641 [2024-06-28 00:39:19,093 INFO L175 Difference]: Start difference. First operand has 414 places, 815 transitions, 19036 flow. Second operand 8 states and 137 transitions. [2024-06-28 00:39:19,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 846 transitions, 21364 flow [2024-06-28 00:39:22,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 846 transitions, 20926 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 00:39:22,380 INFO L231 Difference]: Finished difference. Result has 415 places, 822 transitions, 19207 flow [2024-06-28 00:39:22,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18607, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=815, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19207, PETRI_PLACES=415, PETRI_TRANSITIONS=822} [2024-06-28 00:39:22,381 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 375 predicate places. [2024-06-28 00:39:22,381 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 822 transitions, 19207 flow [2024-06-28 00:39:22,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:22,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:39:22,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:39:22,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:39:22,382 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:39:22,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:39:22,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1811579225, now seen corresponding path program 1 times [2024-06-28 00:39:22,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:39:22,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851298433] [2024-06-28 00:39:22,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:39:22,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:39:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:39:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:39:24,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:39:24,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851298433] [2024-06-28 00:39:24,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851298433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:39:24,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:39:24,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:39:24,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150397570] [2024-06-28 00:39:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:39:24,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:39:24,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:39:24,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:39:24,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:39:24,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:39:24,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 822 transitions, 19207 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:24,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:39:24,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:39:24,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:39:26,793 INFO L124 PetriNetUnfolderBase]: 4972/7450 cut-off events. [2024-06-28 00:39:26,793 INFO L125 PetriNetUnfolderBase]: For 855604/855606 co-relation queries the response was YES. [2024-06-28 00:39:26,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84771 conditions, 7450 events. 4972/7450 cut-off events. For 855604/855606 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 42265 event pairs, 1064 based on Foata normal form. 14/7463 useless extension candidates. Maximal degree in co-relation 84569. Up to 6017 conditions per place. [2024-06-28 00:39:26,944 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 621 selfloop transitions, 266 changer transitions 0/890 dead transitions. [2024-06-28 00:39:26,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 890 transitions, 22222 flow [2024-06-28 00:39:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:39:26,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:39:26,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 00:39:26,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2024-06-28 00:39:26,946 INFO L175 Difference]: Start difference. First operand has 415 places, 822 transitions, 19207 flow. Second operand 8 states and 145 transitions. [2024-06-28 00:39:26,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 890 transitions, 22222 flow [2024-06-28 00:39:30,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 890 transitions, 21911 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 00:39:30,212 INFO L231 Difference]: Finished difference. Result has 419 places, 839 transitions, 19999 flow [2024-06-28 00:39:30,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18896, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19999, PETRI_PLACES=419, PETRI_TRANSITIONS=839} [2024-06-28 00:39:30,213 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 379 predicate places. [2024-06-28 00:39:30,213 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 839 transitions, 19999 flow [2024-06-28 00:39:30,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:30,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:39:30,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:39:30,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:39:30,214 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:39:30,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:39:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1959188825, now seen corresponding path program 2 times [2024-06-28 00:39:30,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:39:30,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352320279] [2024-06-28 00:39:30,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:39:30,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:39:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:39:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:39:31,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:39:31,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352320279] [2024-06-28 00:39:31,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352320279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:39:31,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:39:31,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:39:31,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671137350] [2024-06-28 00:39:31,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:39:31,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:39:31,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:39:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:39:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:39:32,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:39:32,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 839 transitions, 19999 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:32,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:39:32,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:39:32,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:39:34,947 INFO L124 PetriNetUnfolderBase]: 5052/7557 cut-off events. [2024-06-28 00:39:34,949 INFO L125 PetriNetUnfolderBase]: For 889982/889982 co-relation queries the response was YES. [2024-06-28 00:39:35,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87364 conditions, 7557 events. 5052/7557 cut-off events. For 889982/889982 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 42833 event pairs, 1085 based on Foata normal form. 16/7572 useless extension candidates. Maximal degree in co-relation 87160. Up to 7097 conditions per place. [2024-06-28 00:39:35,071 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 776 selfloop transitions, 114 changer transitions 0/893 dead transitions. [2024-06-28 00:39:35,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 893 transitions, 22700 flow [2024-06-28 00:39:35,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:39:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:39:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:39:35,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 00:39:35,073 INFO L175 Difference]: Start difference. First operand has 419 places, 839 transitions, 19999 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:39:35,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 893 transitions, 22700 flow [2024-06-28 00:39:38,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 893 transitions, 22300 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-28 00:39:38,309 INFO L231 Difference]: Finished difference. Result has 426 places, 853 transitions, 20280 flow [2024-06-28 00:39:38,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=19609, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20280, PETRI_PLACES=426, PETRI_TRANSITIONS=853} [2024-06-28 00:39:38,310 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 386 predicate places. [2024-06-28 00:39:38,310 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 853 transitions, 20280 flow [2024-06-28 00:39:38,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:38,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:39:38,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:39:38,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:39:38,311 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:39:38,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:39:38,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1959396215, now seen corresponding path program 3 times [2024-06-28 00:39:38,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:39:38,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735610191] [2024-06-28 00:39:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:39:38,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:39:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:39:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:39:40,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:39:40,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735610191] [2024-06-28 00:39:40,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735610191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:39:40,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:39:40,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:39:40,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017422863] [2024-06-28 00:39:40,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:39:40,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:39:40,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:39:40,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:39:40,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:39:40,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:39:40,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 853 transitions, 20280 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:40,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:39:40,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:39:40,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:39:43,292 INFO L124 PetriNetUnfolderBase]: 4982/7460 cut-off events. [2024-06-28 00:39:43,293 INFO L125 PetriNetUnfolderBase]: For 864513/864513 co-relation queries the response was YES. [2024-06-28 00:39:43,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84643 conditions, 7460 events. 4982/7460 cut-off events. For 864513/864513 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 42297 event pairs, 1073 based on Foata normal form. 16/7475 useless extension candidates. Maximal degree in co-relation 84438. Up to 7052 conditions per place. [2024-06-28 00:39:43,431 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 775 selfloop transitions, 108 changer transitions 0/886 dead transitions. [2024-06-28 00:39:43,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 886 transitions, 22266 flow [2024-06-28 00:39:43,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:39:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:39:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:39:43,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128205128205128 [2024-06-28 00:39:43,433 INFO L175 Difference]: Start difference. First operand has 426 places, 853 transitions, 20280 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:39:43,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 886 transitions, 22266 flow [2024-06-28 00:39:47,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 886 transitions, 21842 flow, removed 104 selfloop flow, removed 8 redundant places. [2024-06-28 00:39:47,312 INFO L231 Difference]: Finished difference. Result has 428 places, 851 transitions, 20050 flow [2024-06-28 00:39:47,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=19808, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=743, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20050, PETRI_PLACES=428, PETRI_TRANSITIONS=851} [2024-06-28 00:39:47,313 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 388 predicate places. [2024-06-28 00:39:47,313 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 851 transitions, 20050 flow [2024-06-28 00:39:47,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:47,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:39:47,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:39:47,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:39:47,313 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:39:47,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:39:47,314 INFO L85 PathProgramCache]: Analyzing trace with hash -583137354, now seen corresponding path program 1 times [2024-06-28 00:39:47,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:39:47,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900711582] [2024-06-28 00:39:47,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:39:47,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:39:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:39:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:39:49,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:39:49,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900711582] [2024-06-28 00:39:49,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900711582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:39:49,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:39:49,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:39:49,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259149742] [2024-06-28 00:39:49,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:39:49,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:39:49,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:39:49,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:39:49,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:39:49,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:39:49,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 851 transitions, 20050 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:49,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:39:49,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:39:49,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:39:52,182 INFO L124 PetriNetUnfolderBase]: 5131/7686 cut-off events. [2024-06-28 00:39:52,182 INFO L125 PetriNetUnfolderBase]: For 916555/916557 co-relation queries the response was YES. [2024-06-28 00:39:52,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87157 conditions, 7686 events. 5131/7686 cut-off events. For 916555/916557 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 43871 event pairs, 1070 based on Foata normal form. 14/7699 useless extension candidates. Maximal degree in co-relation 86951. Up to 6833 conditions per place. [2024-06-28 00:39:52,334 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 714 selfloop transitions, 202 changer transitions 0/919 dead transitions. [2024-06-28 00:39:52,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 919 transitions, 23201 flow [2024-06-28 00:39:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:39:52,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:39:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 00:39:52,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-28 00:39:52,336 INFO L175 Difference]: Start difference. First operand has 428 places, 851 transitions, 20050 flow. Second operand 9 states and 171 transitions. [2024-06-28 00:39:52,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 919 transitions, 23201 flow [2024-06-28 00:39:56,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 919 transitions, 22916 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 00:39:56,955 INFO L231 Difference]: Finished difference. Result has 429 places, 881 transitions, 20810 flow [2024-06-28 00:39:56,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=19765, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20810, PETRI_PLACES=429, PETRI_TRANSITIONS=881} [2024-06-28 00:39:56,956 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 389 predicate places. [2024-06-28 00:39:56,956 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 881 transitions, 20810 flow [2024-06-28 00:39:56,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:56,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:39:56,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:39:56,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:39:56,957 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:39:56,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:39:56,958 INFO L85 PathProgramCache]: Analyzing trace with hash -582927825, now seen corresponding path program 1 times [2024-06-28 00:39:56,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:39:56,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331761849] [2024-06-28 00:39:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:39:56,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:39:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:39:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:39:58,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:39:58,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331761849] [2024-06-28 00:39:58,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331761849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:39:58,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:39:58,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:39:58,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764890994] [2024-06-28 00:39:58,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:39:58,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:39:58,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:39:58,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:39:58,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:39:59,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:39:59,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 881 transitions, 20810 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:39:59,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:39:59,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:39:59,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:40:01,972 INFO L124 PetriNetUnfolderBase]: 5241/7837 cut-off events. [2024-06-28 00:40:01,973 INFO L125 PetriNetUnfolderBase]: For 959632/959634 co-relation queries the response was YES. [2024-06-28 00:40:02,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90721 conditions, 7837 events. 5241/7837 cut-off events. For 959632/959634 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 44708 event pairs, 1069 based on Foata normal form. 8/7844 useless extension candidates. Maximal degree in co-relation 90512. Up to 7011 conditions per place. [2024-06-28 00:40:02,116 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 682 selfloop transitions, 262 changer transitions 0/947 dead transitions. [2024-06-28 00:40:02,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 947 transitions, 24150 flow [2024-06-28 00:40:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:40:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:40:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 00:40:02,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-28 00:40:02,118 INFO L175 Difference]: Start difference. First operand has 429 places, 881 transitions, 20810 flow. Second operand 9 states and 170 transitions. [2024-06-28 00:40:02,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 947 transitions, 24150 flow [2024-06-28 00:40:05,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 947 transitions, 23889 flow, removed 78 selfloop flow, removed 3 redundant places. [2024-06-28 00:40:05,785 INFO L231 Difference]: Finished difference. Result has 437 places, 914 transitions, 22089 flow [2024-06-28 00:40:05,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=20563, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22089, PETRI_PLACES=437, PETRI_TRANSITIONS=914} [2024-06-28 00:40:05,786 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 397 predicate places. [2024-06-28 00:40:05,786 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 914 transitions, 22089 flow [2024-06-28 00:40:05,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:05,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:40:05,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:40:05,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:40:05,788 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:40:05,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:40:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash -582928104, now seen corresponding path program 2 times [2024-06-28 00:40:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:40:05,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96927532] [2024-06-28 00:40:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:40:05,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:40:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:40:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:40:07,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:40:07,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96927532] [2024-06-28 00:40:07,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96927532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:40:07,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:40:07,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:40:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829078019] [2024-06-28 00:40:07,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:40:07,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:40:07,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:40:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:40:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:40:07,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:40:07,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 914 transitions, 22089 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:07,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:40:07,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:40:07,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:40:10,760 INFO L124 PetriNetUnfolderBase]: 5285/7906 cut-off events. [2024-06-28 00:40:10,760 INFO L125 PetriNetUnfolderBase]: For 1015085/1015087 co-relation queries the response was YES. [2024-06-28 00:40:10,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94044 conditions, 7906 events. 5285/7906 cut-off events. For 1015085/1015087 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 45183 event pairs, 1084 based on Foata normal form. 14/7919 useless extension candidates. Maximal degree in co-relation 93831. Up to 7334 conditions per place. [2024-06-28 00:40:10,911 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 742 selfloop transitions, 202 changer transitions 0/947 dead transitions. [2024-06-28 00:40:10,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 947 transitions, 24675 flow [2024-06-28 00:40:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:40:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:40:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 00:40:10,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2024-06-28 00:40:10,912 INFO L175 Difference]: Start difference. First operand has 437 places, 914 transitions, 22089 flow. Second operand 9 states and 163 transitions. [2024-06-28 00:40:10,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 947 transitions, 24675 flow [2024-06-28 00:40:15,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 947 transitions, 24450 flow, removed 82 selfloop flow, removed 3 redundant places. [2024-06-28 00:40:15,706 INFO L231 Difference]: Finished difference. Result has 443 places, 918 transitions, 22355 flow [2024-06-28 00:40:15,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=21864, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=914, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22355, PETRI_PLACES=443, PETRI_TRANSITIONS=918} [2024-06-28 00:40:15,707 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 403 predicate places. [2024-06-28 00:40:15,707 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 918 transitions, 22355 flow [2024-06-28 00:40:15,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:15,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:40:15,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:40:15,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:40:15,708 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:40:15,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:40:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1700787147, now seen corresponding path program 2 times [2024-06-28 00:40:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:40:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615832315] [2024-06-28 00:40:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:40:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:40:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:40:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:40:17,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:40:17,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615832315] [2024-06-28 00:40:17,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615832315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:40:17,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:40:17,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:40:17,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74627018] [2024-06-28 00:40:17,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:40:17,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:40:17,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:40:17,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:40:17,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:40:17,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:40:17,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 918 transitions, 22355 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:17,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:40:17,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:40:17,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:40:20,703 INFO L124 PetriNetUnfolderBase]: 5315/7949 cut-off events. [2024-06-28 00:40:20,703 INFO L125 PetriNetUnfolderBase]: For 1017869/1017871 co-relation queries the response was YES. [2024-06-28 00:40:20,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95048 conditions, 7949 events. 5315/7949 cut-off events. For 1017869/1017871 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 45550 event pairs, 1076 based on Foata normal form. 8/7956 useless extension candidates. Maximal degree in co-relation 94833. Up to 6456 conditions per place. [2024-06-28 00:40:20,853 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 655 selfloop transitions, 309 changer transitions 0/967 dead transitions. [2024-06-28 00:40:20,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 967 transitions, 25131 flow [2024-06-28 00:40:20,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:40:20,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:40:20,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 00:40:20,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:40:20,854 INFO L175 Difference]: Start difference. First operand has 443 places, 918 transitions, 22355 flow. Second operand 10 states and 169 transitions. [2024-06-28 00:40:20,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 967 transitions, 25131 flow [2024-06-28 00:40:24,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 967 transitions, 24720 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 00:40:24,569 INFO L231 Difference]: Finished difference. Result has 447 places, 922 transitions, 22679 flow [2024-06-28 00:40:24,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=21944, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22679, PETRI_PLACES=447, PETRI_TRANSITIONS=922} [2024-06-28 00:40:24,571 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 407 predicate places. [2024-06-28 00:40:24,572 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 922 transitions, 22679 flow [2024-06-28 00:40:24,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:24,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:40:24,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:40:24,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:40:24,572 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:40:24,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:40:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash -575518515, now seen corresponding path program 3 times [2024-06-28 00:40:24,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:40:24,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625597896] [2024-06-28 00:40:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:40:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:40:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:40:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:40:26,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:40:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625597896] [2024-06-28 00:40:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625597896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:40:26,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:40:26,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:40:26,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869193580] [2024-06-28 00:40:26,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:40:26,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:40:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:40:26,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:40:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:40:26,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:40:26,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 922 transitions, 22679 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:26,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:40:26,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:40:26,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:40:29,933 INFO L124 PetriNetUnfolderBase]: 5349/7998 cut-off events. [2024-06-28 00:40:29,934 INFO L125 PetriNetUnfolderBase]: For 1045950/1045952 co-relation queries the response was YES. [2024-06-28 00:40:30,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96670 conditions, 7998 events. 5349/7998 cut-off events. For 1045950/1045952 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 45830 event pairs, 1079 based on Foata normal form. 8/8005 useless extension candidates. Maximal degree in co-relation 96454. Up to 7427 conditions per place. [2024-06-28 00:40:30,067 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 742 selfloop transitions, 208 changer transitions 0/953 dead transitions. [2024-06-28 00:40:30,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 953 transitions, 25329 flow [2024-06-28 00:40:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:40:30,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:40:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 00:40:30,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2024-06-28 00:40:30,068 INFO L175 Difference]: Start difference. First operand has 447 places, 922 transitions, 22679 flow. Second operand 9 states and 163 transitions. [2024-06-28 00:40:30,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 953 transitions, 25329 flow [2024-06-28 00:40:34,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 953 transitions, 24849 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 00:40:34,243 INFO L231 Difference]: Finished difference. Result has 450 places, 926 transitions, 22701 flow [2024-06-28 00:40:34,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22199, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=922, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22701, PETRI_PLACES=450, PETRI_TRANSITIONS=926} [2024-06-28 00:40:34,244 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 410 predicate places. [2024-06-28 00:40:34,244 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 926 transitions, 22701 flow [2024-06-28 00:40:34,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:34,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:40:34,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:40:34,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:40:34,245 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:40:34,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:40:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash -575518794, now seen corresponding path program 3 times [2024-06-28 00:40:34,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:40:34,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143612408] [2024-06-28 00:40:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:40:34,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:40:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:40:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:40:36,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:40:36,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143612408] [2024-06-28 00:40:36,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143612408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:40:36,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:40:36,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:40:36,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905576166] [2024-06-28 00:40:36,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:40:36,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:40:36,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:40:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:40:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:40:36,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:40:36,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 926 transitions, 22701 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:36,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:40:36,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:40:36,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:40:39,206 INFO L124 PetriNetUnfolderBase]: 5403/8084 cut-off events. [2024-06-28 00:40:39,207 INFO L125 PetriNetUnfolderBase]: For 1087844/1087846 co-relation queries the response was YES. [2024-06-28 00:40:39,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97085 conditions, 8084 events. 5403/8084 cut-off events. For 1087844/1087846 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 46418 event pairs, 1110 based on Foata normal form. 14/8097 useless extension candidates. Maximal degree in co-relation 96868. Up to 7626 conditions per place. [2024-06-28 00:40:39,372 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 790 selfloop transitions, 162 changer transitions 0/955 dead transitions. [2024-06-28 00:40:39,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 955 transitions, 25305 flow [2024-06-28 00:40:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:40:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:40:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 00:40:39,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45014245014245013 [2024-06-28 00:40:39,373 INFO L175 Difference]: Start difference. First operand has 450 places, 926 transitions, 22701 flow. Second operand 9 states and 158 transitions. [2024-06-28 00:40:39,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 955 transitions, 25305 flow [2024-06-28 00:40:44,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 955 transitions, 24765 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 00:40:44,688 INFO L231 Difference]: Finished difference. Result has 453 places, 930 transitions, 22592 flow [2024-06-28 00:40:44,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22161, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=764, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22592, PETRI_PLACES=453, PETRI_TRANSITIONS=930} [2024-06-28 00:40:44,690 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 413 predicate places. [2024-06-28 00:40:44,690 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 930 transitions, 22592 flow [2024-06-28 00:40:44,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:44,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:40:44,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:40:44,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:40:44,690 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:40:44,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:40:44,691 INFO L85 PathProgramCache]: Analyzing trace with hash -317221245, now seen corresponding path program 4 times [2024-06-28 00:40:44,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:40:44,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742074935] [2024-06-28 00:40:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:40:44,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:40:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:40:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:40:46,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:40:46,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742074935] [2024-06-28 00:40:46,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742074935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:40:46,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:40:46,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:40:46,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062058205] [2024-06-28 00:40:46,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:40:46,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:40:46,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:40:46,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:40:46,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:40:46,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:40:46,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 930 transitions, 22592 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:46,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:40:46,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:40:46,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:40:49,917 INFO L124 PetriNetUnfolderBase]: 5433/8120 cut-off events. [2024-06-28 00:40:49,917 INFO L125 PetriNetUnfolderBase]: For 1086405/1086405 co-relation queries the response was YES. [2024-06-28 00:40:50,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97500 conditions, 8120 events. 5433/8120 cut-off events. For 1086405/1086405 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 46562 event pairs, 1116 based on Foata normal form. 6/8125 useless extension candidates. Maximal degree in co-relation 97281. Up to 7672 conditions per place. [2024-06-28 00:40:50,057 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 856 selfloop transitions, 117 changer transitions 0/976 dead transitions. [2024-06-28 00:40:50,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 976 transitions, 25056 flow [2024-06-28 00:40:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:40:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:40:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 00:40:50,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40559440559440557 [2024-06-28 00:40:50,059 INFO L175 Difference]: Start difference. First operand has 453 places, 930 transitions, 22592 flow. Second operand 11 states and 174 transitions. [2024-06-28 00:40:50,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 976 transitions, 25056 flow [2024-06-28 00:40:55,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 976 transitions, 24627 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:40:55,446 INFO L231 Difference]: Finished difference. Result has 458 places, 934 transitions, 22520 flow [2024-06-28 00:40:55,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22163, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22520, PETRI_PLACES=458, PETRI_TRANSITIONS=934} [2024-06-28 00:40:55,447 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 418 predicate places. [2024-06-28 00:40:55,447 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 934 transitions, 22520 flow [2024-06-28 00:40:55,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:55,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:40:55,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:40:55,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:40:55,448 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:40:55,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:40:55,448 INFO L85 PathProgramCache]: Analyzing trace with hash -316892211, now seen corresponding path program 1 times [2024-06-28 00:40:55,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:40:55,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732454480] [2024-06-28 00:40:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:40:55,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:40:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:40:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:40:57,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:40:57,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732454480] [2024-06-28 00:40:57,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732454480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:40:57,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:40:57,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:40:57,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250858151] [2024-06-28 00:40:57,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:40:57,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:40:57,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:40:57,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:40:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:40:57,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:40:57,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 934 transitions, 22520 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:40:57,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:40:57,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:40:57,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:41:01,042 INFO L124 PetriNetUnfolderBase]: 5441/8132 cut-off events. [2024-06-28 00:41:01,042 INFO L125 PetriNetUnfolderBase]: For 1092969/1092969 co-relation queries the response was YES. [2024-06-28 00:41:01,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98129 conditions, 8132 events. 5441/8132 cut-off events. For 1092969/1092969 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 46604 event pairs, 1123 based on Foata normal form. 2/8133 useless extension candidates. Maximal degree in co-relation 97909. Up to 8014 conditions per place. [2024-06-28 00:41:01,204 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 910 selfloop transitions, 41 changer transitions 0/954 dead transitions. [2024-06-28 00:41:01,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 954 transitions, 24572 flow [2024-06-28 00:41:01,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:41:01,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:41:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 00:41:01,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 00:41:01,206 INFO L175 Difference]: Start difference. First operand has 458 places, 934 transitions, 22520 flow. Second operand 9 states and 135 transitions. [2024-06-28 00:41:01,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 954 transitions, 24572 flow [2024-06-28 00:41:06,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 954 transitions, 24257 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-28 00:41:06,449 INFO L231 Difference]: Finished difference. Result has 458 places, 936 transitions, 22375 flow [2024-06-28 00:41:06,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22205, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=934, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=893, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22375, PETRI_PLACES=458, PETRI_TRANSITIONS=936} [2024-06-28 00:41:06,450 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 418 predicate places. [2024-06-28 00:41:06,450 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 936 transitions, 22375 flow [2024-06-28 00:41:06,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:41:06,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:41:06,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:41:06,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:41:06,450 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:41:06,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:41:06,451 INFO L85 PathProgramCache]: Analyzing trace with hash -316904115, now seen corresponding path program 5 times [2024-06-28 00:41:06,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:41:06,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086848111] [2024-06-28 00:41:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:41:06,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:41:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:41:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:41:08,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:41:08,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086848111] [2024-06-28 00:41:08,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086848111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:41:08,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:41:08,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:41:08,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448933782] [2024-06-28 00:41:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:41:08,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:41:08,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:41:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:41:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:41:08,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:41:08,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 936 transitions, 22375 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:41:08,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:41:08,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:41:08,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:41:11,673 INFO L124 PetriNetUnfolderBase]: 5471/8174 cut-off events. [2024-06-28 00:41:11,673 INFO L125 PetriNetUnfolderBase]: For 1129560/1129560 co-relation queries the response was YES. [2024-06-28 00:41:11,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98419 conditions, 8174 events. 5471/8174 cut-off events. For 1129560/1129560 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 46894 event pairs, 1118 based on Foata normal form. 6/8179 useless extension candidates. Maximal degree in co-relation 98198. Up to 7726 conditions per place. [2024-06-28 00:41:11,824 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 862 selfloop transitions, 114 changer transitions 0/979 dead transitions. [2024-06-28 00:41:11,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 979 transitions, 24789 flow [2024-06-28 00:41:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:41:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:41:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 00:41:11,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 00:41:11,839 INFO L175 Difference]: Start difference. First operand has 458 places, 936 transitions, 22375 flow. Second operand 11 states and 176 transitions. [2024-06-28 00:41:11,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 979 transitions, 24789 flow [2024-06-28 00:41:17,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 979 transitions, 24645 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 00:41:17,095 INFO L231 Difference]: Finished difference. Result has 463 places, 940 transitions, 22592 flow [2024-06-28 00:41:17,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22231, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=822, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22592, PETRI_PLACES=463, PETRI_TRANSITIONS=940} [2024-06-28 00:41:17,096 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 423 predicate places. [2024-06-28 00:41:17,097 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 940 transitions, 22592 flow [2024-06-28 00:41:17,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:41:17,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:41:17,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:41:17,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:41:17,097 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:41:17,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:41:17,097 INFO L85 PathProgramCache]: Analyzing trace with hash -317230545, now seen corresponding path program 6 times [2024-06-28 00:41:17,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:41:17,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297610921] [2024-06-28 00:41:17,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:41:17,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:41:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:41:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:41:19,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:41:19,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297610921] [2024-06-28 00:41:19,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297610921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:41:19,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:41:19,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:41:19,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080188790] [2024-06-28 00:41:19,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:41:19,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:41:19,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:41:19,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:41:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:41:19,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:41:19,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 940 transitions, 22592 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:41:19,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:41:19,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:41:19,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:41:22,719 INFO L124 PetriNetUnfolderBase]: 5501/8216 cut-off events. [2024-06-28 00:41:22,719 INFO L125 PetriNetUnfolderBase]: For 1154430/1154430 co-relation queries the response was YES. [2024-06-28 00:41:22,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99730 conditions, 8216 events. 5501/8216 cut-off events. For 1154430/1154430 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 47154 event pairs, 1145 based on Foata normal form. 6/8221 useless extension candidates. Maximal degree in co-relation 99508. Up to 8062 conditions per place. [2024-06-28 00:41:22,863 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 901 selfloop transitions, 60 changer transitions 0/964 dead transitions. [2024-06-28 00:41:22,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 964 transitions, 24720 flow [2024-06-28 00:41:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:41:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:41:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 00:41:22,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-28 00:41:22,865 INFO L175 Difference]: Start difference. First operand has 463 places, 940 transitions, 22592 flow. Second operand 11 states and 166 transitions. [2024-06-28 00:41:22,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 964 transitions, 24720 flow [2024-06-28 00:41:28,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 964 transitions, 24399 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-28 00:41:28,281 INFO L231 Difference]: Finished difference. Result has 466 places, 946 transitions, 22533 flow [2024-06-28 00:41:28,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22273, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22533, PETRI_PLACES=466, PETRI_TRANSITIONS=946} [2024-06-28 00:41:28,282 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 426 predicate places. [2024-06-28 00:41:28,282 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 946 transitions, 22533 flow [2024-06-28 00:41:28,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:41:28,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:41:28,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:41:28,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:41:28,282 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:41:28,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:41:28,283 INFO L85 PathProgramCache]: Analyzing trace with hash -317230824, now seen corresponding path program 4 times [2024-06-28 00:41:28,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:41:28,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872429823] [2024-06-28 00:41:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:41:28,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:41:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:41:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:41:30,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:41:30,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872429823] [2024-06-28 00:41:30,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872429823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:41:30,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:41:30,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:41:30,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630699218] [2024-06-28 00:41:30,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:41:30,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:41:30,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:41:30,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:41:30,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:41:30,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:41:30,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 946 transitions, 22533 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:41:30,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:41:30,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:41:30,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:41:33,701 INFO L124 PetriNetUnfolderBase]: 5517/8240 cut-off events. [2024-06-28 00:41:33,702 INFO L125 PetriNetUnfolderBase]: For 1164958/1164958 co-relation queries the response was YES. [2024-06-28 00:41:33,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99807 conditions, 8240 events. 5517/8240 cut-off events. For 1164958/1164958 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 47238 event pairs, 1142 based on Foata normal form. 4/8243 useless extension candidates. Maximal degree in co-relation 99583. Up to 8105 conditions per place. [2024-06-28 00:41:33,861 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 911 selfloop transitions, 52 changer transitions 0/966 dead transitions. [2024-06-28 00:41:33,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 966 transitions, 24591 flow [2024-06-28 00:41:33,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:41:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:41:33,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:41:33,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-06-28 00:41:33,876 INFO L175 Difference]: Start difference. First operand has 466 places, 946 transitions, 22533 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:41:33,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 966 transitions, 24591 flow [2024-06-28 00:41:39,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 966 transitions, 24454 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 00:41:39,661 INFO L231 Difference]: Finished difference. Result has 470 places, 950 transitions, 22604 flow [2024-06-28 00:41:39,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22396, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=894, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22604, PETRI_PLACES=470, PETRI_TRANSITIONS=950} [2024-06-28 00:41:39,675 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 430 predicate places. [2024-06-28 00:41:39,675 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 950 transitions, 22604 flow [2024-06-28 00:41:39,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:41:39,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:41:39,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:41:39,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:41:39,686 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:41:39,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:41:39,686 INFO L85 PathProgramCache]: Analyzing trace with hash -434329192, now seen corresponding path program 3 times [2024-06-28 00:41:39,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:41:39,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644479983] [2024-06-28 00:41:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:41:39,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:41:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:41:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:41:41,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:41:41,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644479983] [2024-06-28 00:41:41,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644479983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:41:41,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:41:41,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:41:41,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387371749] [2024-06-28 00:41:41,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:41:41,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:41:41,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:41:41,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:41:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:41:41,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:41:41,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 950 transitions, 22604 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:41:41,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:41:41,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:41:41,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:41:44,827 INFO L124 PetriNetUnfolderBase]: 5519/8236 cut-off events. [2024-06-28 00:41:44,827 INFO L125 PetriNetUnfolderBase]: For 1175775/1175775 co-relation queries the response was YES. [2024-06-28 00:41:44,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99938 conditions, 8236 events. 5519/8236 cut-off events. For 1175775/1175775 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 47207 event pairs, 1181 based on Foata normal form. 2/8237 useless extension candidates. Maximal degree in co-relation 99712. Up to 8115 conditions per place. [2024-06-28 00:41:44,976 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 919 selfloop transitions, 55 changer transitions 0/977 dead transitions. [2024-06-28 00:41:44,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 977 transitions, 25093 flow [2024-06-28 00:41:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:41:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:41:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 00:41:44,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 00:41:44,977 INFO L175 Difference]: Start difference. First operand has 470 places, 950 transitions, 22604 flow. Second operand 8 states and 130 transitions. [2024-06-28 00:41:44,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 977 transitions, 25093 flow [2024-06-28 00:41:49,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 977 transitions, 24950 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 00:41:49,604 INFO L231 Difference]: Finished difference. Result has 474 places, 960 transitions, 22912 flow [2024-06-28 00:41:49,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22461, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=896, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22912, PETRI_PLACES=474, PETRI_TRANSITIONS=960} [2024-06-28 00:41:49,605 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 434 predicate places. [2024-06-28 00:41:49,605 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 960 transitions, 22912 flow [2024-06-28 00:41:49,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:41:49,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:41:49,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:41:49,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:41:49,606 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:41:49,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:41:49,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2040018257, now seen corresponding path program 4 times [2024-06-28 00:41:49,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:41:49,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619601500] [2024-06-28 00:41:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:41:49,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:41:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:41:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:41:51,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:41:51,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619601500] [2024-06-28 00:41:51,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619601500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:41:51,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:41:51,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:41:51,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235197318] [2024-06-28 00:41:51,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:41:51,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:41:51,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:41:51,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:41:51,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:41:51,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:41:51,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 960 transitions, 22912 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:41:51,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:41:51,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:41:51,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:41:54,769 INFO L124 PetriNetUnfolderBase]: 5531/8254 cut-off events. [2024-06-28 00:41:54,769 INFO L125 PetriNetUnfolderBase]: For 1209865/1209865 co-relation queries the response was YES. [2024-06-28 00:41:54,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100356 conditions, 8254 events. 5531/8254 cut-off events. For 1209865/1209865 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 47308 event pairs, 1183 based on Foata normal form. 6/8259 useless extension candidates. Maximal degree in co-relation 100127. Up to 7988 conditions per place. [2024-06-28 00:41:55,026 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 916 selfloop transitions, 72 changer transitions 0/991 dead transitions. [2024-06-28 00:41:55,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 991 transitions, 25409 flow [2024-06-28 00:41:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:41:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:41:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 00:41:55,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-06-28 00:41:55,028 INFO L175 Difference]: Start difference. First operand has 474 places, 960 transitions, 22912 flow. Second operand 8 states and 135 transitions. [2024-06-28 00:41:55,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 991 transitions, 25409 flow [2024-06-28 00:42:00,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 991 transitions, 25280 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 00:42:00,572 INFO L231 Difference]: Finished difference. Result has 479 places, 962 transitions, 23019 flow [2024-06-28 00:42:00,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22762, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23019, PETRI_PLACES=479, PETRI_TRANSITIONS=962} [2024-06-28 00:42:00,575 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 439 predicate places. [2024-06-28 00:42:00,575 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 962 transitions, 23019 flow [2024-06-28 00:42:00,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:42:00,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:42:00,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:42:00,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:42:00,576 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:42:00,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:42:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1812207472, now seen corresponding path program 1 times [2024-06-28 00:42:00,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:42:00,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779571548] [2024-06-28 00:42:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:42:00,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:42:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:42:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:42:02,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:42:02,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779571548] [2024-06-28 00:42:02,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779571548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:42:02,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:42:02,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:42:02,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108180205] [2024-06-28 00:42:02,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:42:02,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:42:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:42:02,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:42:02,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:42:02,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:42:02,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 962 transitions, 23019 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:42:02,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:42:02,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:42:02,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:42:05,642 INFO L124 PetriNetUnfolderBase]: 5596/8344 cut-off events. [2024-06-28 00:42:05,642 INFO L125 PetriNetUnfolderBase]: For 1238068/1238068 co-relation queries the response was YES. [2024-06-28 00:42:05,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102213 conditions, 8344 events. 5596/8344 cut-off events. For 1238068/1238068 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 47817 event pairs, 1177 based on Foata normal form. 1/8344 useless extension candidates. Maximal degree in co-relation 101982. Up to 8051 conditions per place. [2024-06-28 00:42:05,783 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 902 selfloop transitions, 107 changer transitions 0/1012 dead transitions. [2024-06-28 00:42:05,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1012 transitions, 25968 flow [2024-06-28 00:42:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:42:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:42:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 00:42:05,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43304843304843305 [2024-06-28 00:42:05,784 INFO L175 Difference]: Start difference. First operand has 479 places, 962 transitions, 23019 flow. Second operand 9 states and 152 transitions. [2024-06-28 00:42:05,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1012 transitions, 25968 flow [2024-06-28 00:42:11,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 1012 transitions, 25058 flow, removed 65 selfloop flow, removed 9 redundant places. [2024-06-28 00:42:11,499 INFO L231 Difference]: Finished difference. Result has 481 places, 983 transitions, 22983 flow [2024-06-28 00:42:11,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22118, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=858, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22983, PETRI_PLACES=481, PETRI_TRANSITIONS=983} [2024-06-28 00:42:11,500 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 441 predicate places. [2024-06-28 00:42:11,500 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 983 transitions, 22983 flow [2024-06-28 00:42:11,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:42:11,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:42:11,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:42:11,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:42:11,501 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:42:11,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:42:11,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1801731952, now seen corresponding path program 2 times [2024-06-28 00:42:11,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:42:11,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642010645] [2024-06-28 00:42:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:42:11,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:42:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:42:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:42:12,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:42:12,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642010645] [2024-06-28 00:42:12,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642010645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:42:12,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:42:12,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:42:12,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746902597] [2024-06-28 00:42:12,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:42:12,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:42:12,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:42:12,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:42:12,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:42:13,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:42:13,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 983 transitions, 22983 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:42:13,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:42:13,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:42:13,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:42:16,527 INFO L124 PetriNetUnfolderBase]: 5593/8340 cut-off events. [2024-06-28 00:42:16,528 INFO L125 PetriNetUnfolderBase]: For 1254548/1254548 co-relation queries the response was YES. [2024-06-28 00:42:16,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101548 conditions, 8340 events. 5593/8340 cut-off events. For 1254548/1254548 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 47828 event pairs, 1184 based on Foata normal form. 9/8348 useless extension candidates. Maximal degree in co-relation 101315. Up to 8174 conditions per place. [2024-06-28 00:42:16,690 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 948 selfloop transitions, 65 changer transitions 0/1016 dead transitions. [2024-06-28 00:42:16,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1016 transitions, 25443 flow [2024-06-28 00:42:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:42:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:42:16,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 00:42:16,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-06-28 00:42:16,691 INFO L175 Difference]: Start difference. First operand has 481 places, 983 transitions, 22983 flow. Second operand 10 states and 162 transitions. [2024-06-28 00:42:16,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1016 transitions, 25443 flow [2024-06-28 00:42:22,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 1016 transitions, 25215 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 00:42:22,899 INFO L231 Difference]: Finished difference. Result has 486 places, 989 transitions, 23129 flow [2024-06-28 00:42:22,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22777, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=983, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=918, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23129, PETRI_PLACES=486, PETRI_TRANSITIONS=989} [2024-06-28 00:42:22,906 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 446 predicate places. [2024-06-28 00:42:22,906 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 989 transitions, 23129 flow [2024-06-28 00:42:22,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:42:22,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:42:22,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:42:22,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:42:22,907 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:42:22,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:42:22,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1715277478, now seen corresponding path program 4 times [2024-06-28 00:42:22,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:42:22,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729112065] [2024-06-28 00:42:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:42:22,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:42:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:42:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:42:24,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:42:24,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729112065] [2024-06-28 00:42:24,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729112065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:42:24,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:42:24,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:42:24,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778170211] [2024-06-28 00:42:24,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:42:24,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:42:24,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:42:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:42:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:42:24,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:42:24,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 989 transitions, 23129 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:42:24,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:42:24,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:42:24,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:42:27,688 INFO L124 PetriNetUnfolderBase]: 5595/8343 cut-off events. [2024-06-28 00:42:27,688 INFO L125 PetriNetUnfolderBase]: For 1218618/1218618 co-relation queries the response was YES. [2024-06-28 00:42:27,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101261 conditions, 8343 events. 5595/8343 cut-off events. For 1218618/1218618 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 47838 event pairs, 1181 based on Foata normal form. 2/8344 useless extension candidates. Maximal degree in co-relation 101028. Up to 8260 conditions per place. [2024-06-28 00:42:27,847 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 975 selfloop transitions, 28 changer transitions 0/1006 dead transitions. [2024-06-28 00:42:27,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1006 transitions, 25307 flow [2024-06-28 00:42:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:42:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:42:27,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 00:42:27,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-06-28 00:42:27,849 INFO L175 Difference]: Start difference. First operand has 486 places, 989 transitions, 23129 flow. Second operand 8 states and 124 transitions. [2024-06-28 00:42:27,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1006 transitions, 25307 flow [2024-06-28 00:42:33,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1006 transitions, 24877 flow, removed 114 selfloop flow, removed 11 redundant places. [2024-06-28 00:42:33,043 INFO L231 Difference]: Finished difference. Result has 483 places, 992 transitions, 22863 flow [2024-06-28 00:42:33,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22699, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=961, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22863, PETRI_PLACES=483, PETRI_TRANSITIONS=992} [2024-06-28 00:42:33,043 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 443 predicate places. [2024-06-28 00:42:33,043 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 992 transitions, 22863 flow [2024-06-28 00:42:33,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:42:33,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:42:33,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:42:33,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:42:33,044 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:42:33,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:42:33,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1715277137, now seen corresponding path program 5 times [2024-06-28 00:42:33,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:42:33,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976200956] [2024-06-28 00:42:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:42:33,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:42:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:42:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:42:34,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:42:34,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976200956] [2024-06-28 00:42:34,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976200956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:42:34,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:42:34,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:42:34,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863541774] [2024-06-28 00:42:34,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:42:34,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:42:34,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:42:34,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:42:34,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:42:34,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:42:34,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 992 transitions, 22863 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:42:34,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:42:34,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:42:34,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:42:38,400 INFO L124 PetriNetUnfolderBase]: 5583/8327 cut-off events. [2024-06-28 00:42:38,400 INFO L125 PetriNetUnfolderBase]: For 1205573/1205573 co-relation queries the response was YES. [2024-06-28 00:42:38,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99695 conditions, 8327 events. 5583/8327 cut-off events. For 1205573/1205573 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 47755 event pairs, 1183 based on Foata normal form. 4/8330 useless extension candidates. Maximal degree in co-relation 99465. Up to 8210 conditions per place.