./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:31:27,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:31:28,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:31:28,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:31:28,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:31:28,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:31:28,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:31:28,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:31:28,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:31:28,093 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:31:28,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:31:28,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:31:28,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:31:28,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:31:28,095 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:31:28,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:31:28,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:31:28,096 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:31:28,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:31:28,096 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:31:28,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:31:28,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:31:28,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:31:28,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:31:28,098 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:31:28,098 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:31:28,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:31:28,098 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:31:28,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:31:28,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:31:28,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:31:28,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:31:28,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:31:28,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:31:28,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:31:28,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:31:28,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:31:28,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:31:28,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:31:28,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:31:28,107 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:31:28,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:31:28,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:31:28,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:31:28,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:31:28,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:31:28,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:31:28,325 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:31:28,325 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:31:28,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:31:29,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:31:29,651 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:31:29,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:31:29,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236335f92/9406b9390e30442495ec1f39383c3ab1/FLAG86d6a6000 [2024-06-27 22:31:29,686 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236335f92/9406b9390e30442495ec1f39383c3ab1 [2024-06-27 22:31:29,688 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:31:29,688 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:31:29,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 22:31:29,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:31:29,764 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:31:29,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:31:29,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:31:29,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:31:29,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:31:29" (1/2) ... [2024-06-27 22:31:29,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c687677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:29, skipping insertion in model container [2024-06-27 22:31:29,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:31:29" (1/2) ... [2024-06-27 22:31:29,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4a490ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:29, skipping insertion in model container [2024-06-27 22:31:29,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:31:29" (2/2) ... [2024-06-27 22:31:29,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c687677 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:29, skipping insertion in model container [2024-06-27 22:31:29,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:31:29" (2/2) ... [2024-06-27 22:31:29,774 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:31:29,798 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:31:29,800 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:31:29,800 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:31:29,800 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:31:29,800 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-27 22:31:29,837 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:31:29,985 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 22:31:30,165 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:31:30,172 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:31:30,208 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:31:30,411 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:31:30,476 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:31:30,477 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30 WrapperNode [2024-06-27 22:31:30,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:31:30,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:31:30,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:31:30,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:31:30,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,564 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2024-06-27 22:31:30,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:31:30,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:31:30,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:31:30,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:31:30,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,592 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,617 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:31:30,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:31:30,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:31:30,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:31:30,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:31:30,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (1/1) ... [2024-06-27 22:31:30,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:31:30,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:31:30,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:31:30,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:31:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:31:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:31:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:31:30,769 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:31:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:31:30,769 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:31:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:31:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:31:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:31:30,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:31:30,770 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:31:30,892 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:31:30,894 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:31:31,289 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:31:31,290 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:31:31,455 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:31:31,455 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:31:31,456 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:31:31 BoogieIcfgContainer [2024-06-27 22:31:31,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:31:31,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:31:31,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:31:31,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:31:31,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:31:29" (1/4) ... [2024-06-27 22:31:31,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff1eae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:31:31, skipping insertion in model container [2024-06-27 22:31:31,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:31:29" (2/4) ... [2024-06-27 22:31:31,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff1eae4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:31:31, skipping insertion in model container [2024-06-27 22:31:31,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:30" (3/4) ... [2024-06-27 22:31:31,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff1eae4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:31:31, skipping insertion in model container [2024-06-27 22:31:31,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:31:31" (4/4) ... [2024-06-27 22:31:31,471 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:31:31,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:31:31,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:31:31,501 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:31:31,571 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:31:31,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:31:31,611 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 22:31:31,612 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:31:31,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 22:31:31,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:31:31,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 22:31:31,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:31:31,627 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;@540fe6a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:31:31,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:31:31,630 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:31:31,631 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:31:31,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:31:31,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:31,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:31:31,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:31,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash 384634525, now seen corresponding path program 1 times [2024-06-27 22:31:31,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:31,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282759875] [2024-06-27 22:31:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:31,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:32,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:32,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282759875] [2024-06-27 22:31:32,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282759875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:32,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:32,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:31:32,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627948120] [2024-06-27 22:31:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:32,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:31:32,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:32,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:31:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:31:32,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:31:32,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:32,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:32,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:31:32,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:33,026 INFO L124 PetriNetUnfolderBase]: 723/1356 cut-off events. [2024-06-27 22:31:33,026 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 22:31:33,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1356 events. 723/1356 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7463 event pairs, 588 based on Foata normal form. 56/1293 useless extension candidates. Maximal degree in co-relation 2549. Up to 1176 conditions per place. [2024-06-27 22:31:33,037 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 34 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-06-27 22:31:33,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 173 flow [2024-06-27 22:31:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:31:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:31:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-27 22:31:33,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-27 22:31:33,048 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 72 transitions. [2024-06-27 22:31:33,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 173 flow [2024-06-27 22:31:33,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:31:33,052 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 95 flow [2024-06-27 22:31:33,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-27 22:31:33,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 22:31:33,056 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 95 flow [2024-06-27 22:31:33,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:33,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:33,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:33,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:31:33,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:33,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash 266627163, now seen corresponding path program 1 times [2024-06-27 22:31:33,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:33,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121291280] [2024-06-27 22:31:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:33,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121291280] [2024-06-27 22:31:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121291280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:33,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:33,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:31:33,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360121335] [2024-06-27 22:31:33,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:33,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:31:33,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:33,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:31:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:31:33,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:31:33,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:33,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:33,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:31:33,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:33,902 INFO L124 PetriNetUnfolderBase]: 727/1323 cut-off events. [2024-06-27 22:31:33,903 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-06-27 22:31:33,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2780 conditions, 1323 events. 727/1323 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7225 event pairs, 448 based on Foata normal form. 2/1218 useless extension candidates. Maximal degree in co-relation 2768. Up to 1171 conditions per place. [2024-06-27 22:31:33,909 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 40 selfloop transitions, 6 changer transitions 1/55 dead transitions. [2024-06-27 22:31:33,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 239 flow [2024-06-27 22:31:33,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:31:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:31:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-06-27 22:31:33,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2024-06-27 22:31:33,912 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 95 flow. Second operand 4 states and 87 transitions. [2024-06-27 22:31:33,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 239 flow [2024-06-27 22:31:33,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:31:33,916 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 141 flow [2024-06-27 22:31:33,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-27 22:31:33,919 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-27 22:31:33,919 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 141 flow [2024-06-27 22:31:33,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:33,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:33,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:33,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:31:33,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:33,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:33,923 INFO L85 PathProgramCache]: Analyzing trace with hash -324491320, now seen corresponding path program 1 times [2024-06-27 22:31:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:33,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625997567] [2024-06-27 22:31:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:33,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:34,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:34,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625997567] [2024-06-27 22:31:34,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625997567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:34,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:34,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:31:34,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201867392] [2024-06-27 22:31:34,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:34,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:31:34,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:34,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:31:34,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:31:34,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:31:34,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 141 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) [2024-06-27 22:31:34,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:34,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:31:34,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:35,025 INFO L124 PetriNetUnfolderBase]: 751/1375 cut-off events. [2024-06-27 22:31:35,025 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2024-06-27 22:31:35,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 1375 events. 751/1375 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7674 event pairs, 356 based on Foata normal form. 3/1273 useless extension candidates. Maximal degree in co-relation 3110. Up to 1138 conditions per place. [2024-06-27 22:31:35,030 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 52 selfloop transitions, 13 changer transitions 2/75 dead transitions. [2024-06-27 22:31:35,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 371 flow [2024-06-27 22:31:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:31:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:31:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 22:31:35,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-27 22:31:35,035 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 141 flow. Second operand 5 states and 115 transitions. [2024-06-27 22:31:35,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 371 flow [2024-06-27 22:31:35,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 75 transitions, 364 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:31:35,039 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 224 flow [2024-06-27 22:31:35,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-06-27 22:31:35,040 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-06-27 22:31:35,040 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 224 flow [2024-06-27 22:31:35,040 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) [2024-06-27 22:31:35,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:35,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:35,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:31:35,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:35,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1469295078, now seen corresponding path program 1 times [2024-06-27 22:31:35,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:35,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681537306] [2024-06-27 22:31:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:35,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:36,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:36,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:36,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681537306] [2024-06-27 22:31:36,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681537306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:36,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:36,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:31:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531606846] [2024-06-27 22:31:36,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:36,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:31:36,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:36,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:31:36,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:31:36,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:31:36,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 224 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) [2024-06-27 22:31:36,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:36,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:31:36,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:36,418 INFO L124 PetriNetUnfolderBase]: 769/1403 cut-off events. [2024-06-27 22:31:36,418 INFO L125 PetriNetUnfolderBase]: For 1202/1202 co-relation queries the response was YES. [2024-06-27 22:31:36,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 1403 events. 769/1403 cut-off events. For 1202/1202 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7875 event pairs, 292 based on Foata normal form. 3/1301 useless extension candidates. Maximal degree in co-relation 3728. Up to 1135 conditions per place. [2024-06-27 22:31:36,425 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 59 selfloop transitions, 17 changer transitions 3/87 dead transitions. [2024-06-27 22:31:36,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 496 flow [2024-06-27 22:31:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:31:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:31:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 22:31:36,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6126126126126126 [2024-06-27 22:31:36,427 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 224 flow. Second operand 6 states and 136 transitions. [2024-06-27 22:31:36,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 496 flow [2024-06-27 22:31:36,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 87 transitions, 492 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:31:36,431 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 287 flow [2024-06-27 22:31:36,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-27 22:31:36,432 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-06-27 22:31:36,432 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 287 flow [2024-06-27 22:31:36,432 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) [2024-06-27 22:31:36,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:36,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:36,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:31:36,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:36,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1696494119, now seen corresponding path program 1 times [2024-06-27 22:31:36,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:36,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150645273] [2024-06-27 22:31:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:36,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:37,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:37,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150645273] [2024-06-27 22:31:37,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150645273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:37,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:37,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:37,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874470187] [2024-06-27 22:31:37,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:37,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:37,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:37,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:37,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:37,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:31:37,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 287 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) [2024-06-27 22:31:37,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:37,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:31:37,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:37,988 INFO L124 PetriNetUnfolderBase]: 795/1449 cut-off events. [2024-06-27 22:31:37,988 INFO L125 PetriNetUnfolderBase]: For 1833/1833 co-relation queries the response was YES. [2024-06-27 22:31:37,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4277 conditions, 1449 events. 795/1449 cut-off events. For 1833/1833 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8198 event pairs, 222 based on Foata normal form. 6/1350 useless extension candidates. Maximal degree in co-relation 4255. Up to 1119 conditions per place. [2024-06-27 22:31:37,995 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 63 selfloop transitions, 20 changer transitions 4/95 dead transitions. [2024-06-27 22:31:37,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 593 flow [2024-06-27 22:31:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 22:31:37,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-06-27 22:31:37,996 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 287 flow. Second operand 7 states and 154 transitions. [2024-06-27 22:31:37,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 593 flow [2024-06-27 22:31:37,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 95 transitions, 556 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:31:38,000 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 312 flow [2024-06-27 22:31:38,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=312, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-06-27 22:31:38,001 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-27 22:31:38,001 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 312 flow [2024-06-27 22:31:38,001 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) [2024-06-27 22:31:38,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:38,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:38,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:31:38,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:38,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:38,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1022446416, now seen corresponding path program 1 times [2024-06-27 22:31:38,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:38,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2470479] [2024-06-27 22:31:38,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:38,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:38,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:38,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2470479] [2024-06-27 22:31:38,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2470479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:38,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:38,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:31:38,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839100049] [2024-06-27 22:31:38,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:38,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:31:38,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:31:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:31:39,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:39,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 312 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) [2024-06-27 22:31:39,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:39,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:39,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:39,409 INFO L124 PetriNetUnfolderBase]: 893/1655 cut-off events. [2024-06-27 22:31:39,409 INFO L125 PetriNetUnfolderBase]: For 2472/2472 co-relation queries the response was YES. [2024-06-27 22:31:39,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4986 conditions, 1655 events. 893/1655 cut-off events. For 2472/2472 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9322 event pairs, 365 based on Foata normal form. 1/1532 useless extension candidates. Maximal degree in co-relation 4962. Up to 1433 conditions per place. [2024-06-27 22:31:39,418 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 56 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-27 22:31:39,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 524 flow [2024-06-27 22:31:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:31:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:31:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-27 22:31:39,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:31:39,420 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 312 flow. Second operand 5 states and 91 transitions. [2024-06-27 22:31:39,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 524 flow [2024-06-27 22:31:39,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 472 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:31:39,426 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 342 flow [2024-06-27 22:31:39,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-06-27 22:31:39,428 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-27 22:31:39,428 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 342 flow [2024-06-27 22:31:39,428 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) [2024-06-27 22:31:39,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:39,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:39,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:31:39,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:39,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:39,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1631084631, now seen corresponding path program 1 times [2024-06-27 22:31:39,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:39,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145722127] [2024-06-27 22:31:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:39,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:39,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:39,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145722127] [2024-06-27 22:31:39,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145722127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:39,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:39,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:31:39,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579009050] [2024-06-27 22:31:39,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:39,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:31:39,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:39,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:31:39,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:31:39,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-06-27 22:31:39,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:39,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:39,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-06-27 22:31:39,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:39,662 INFO L124 PetriNetUnfolderBase]: 422/955 cut-off events. [2024-06-27 22:31:39,662 INFO L125 PetriNetUnfolderBase]: For 1048/1134 co-relation queries the response was YES. [2024-06-27 22:31:39,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 955 events. 422/955 cut-off events. For 1048/1134 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5923 event pairs, 194 based on Foata normal form. 12/889 useless extension candidates. Maximal degree in co-relation 2498. Up to 601 conditions per place. [2024-06-27 22:31:39,668 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 35 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2024-06-27 22:31:39,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 443 flow [2024-06-27 22:31:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:31:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:31:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-27 22:31:39,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-06-27 22:31:39,670 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 342 flow. Second operand 3 states and 83 transitions. [2024-06-27 22:31:39,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 443 flow [2024-06-27 22:31:39,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 425 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:31:39,673 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 321 flow [2024-06-27 22:31:39,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-06-27 22:31:39,675 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-27 22:31:39,675 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 321 flow [2024-06-27 22:31:39,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:39,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:39,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:39,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:31:39,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:39,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:39,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1631069499, now seen corresponding path program 1 times [2024-06-27 22:31:39,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:39,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992358415] [2024-06-27 22:31:39,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:39,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:41,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:41,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992358415] [2024-06-27 22:31:41,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992358415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:41,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:41,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:31:41,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259467879] [2024-06-27 22:31:41,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:41,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:31:41,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:41,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:31:41,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:31:41,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:41,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 321 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) [2024-06-27 22:31:41,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:41,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:41,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:41,549 INFO L124 PetriNetUnfolderBase]: 791/1461 cut-off events. [2024-06-27 22:31:41,549 INFO L125 PetriNetUnfolderBase]: For 2665/2665 co-relation queries the response was YES. [2024-06-27 22:31:41,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4406 conditions, 1461 events. 791/1461 cut-off events. For 2665/2665 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7892 event pairs, 288 based on Foata normal form. 1/1407 useless extension candidates. Maximal degree in co-relation 4379. Up to 1272 conditions per place. [2024-06-27 22:31:41,556 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 56 selfloop transitions, 17 changer transitions 1/80 dead transitions. [2024-06-27 22:31:41,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 563 flow [2024-06-27 22:31:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:31:41,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:31:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-27 22:31:41,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 22:31:41,558 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 321 flow. Second operand 6 states and 100 transitions. [2024-06-27 22:31:41,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 563 flow [2024-06-27 22:31:41,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:31:41,562 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 433 flow [2024-06-27 22:31:41,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=433, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2024-06-27 22:31:41,565 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-27 22:31:41,565 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 433 flow [2024-06-27 22:31:41,565 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) [2024-06-27 22:31:41,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:41,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:41,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:31:41,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:41,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:41,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1384381524, now seen corresponding path program 1 times [2024-06-27 22:31:41,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:41,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047697835] [2024-06-27 22:31:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:41,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:42,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:42,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047697835] [2024-06-27 22:31:42,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047697835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:42,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:42,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:31:42,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509738297] [2024-06-27 22:31:42,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:42,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:31:42,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:42,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:31:42,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:31:42,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:42,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 433 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) [2024-06-27 22:31:42,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:42,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:42,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:42,755 INFO L124 PetriNetUnfolderBase]: 742/1382 cut-off events. [2024-06-27 22:31:42,756 INFO L125 PetriNetUnfolderBase]: For 2930/2930 co-relation queries the response was YES. [2024-06-27 22:31:42,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4445 conditions, 1382 events. 742/1382 cut-off events. For 2930/2930 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7398 event pairs, 203 based on Foata normal form. 2/1331 useless extension candidates. Maximal degree in co-relation 4413. Up to 1152 conditions per place. [2024-06-27 22:31:42,764 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 67 selfloop transitions, 19 changer transitions 0/92 dead transitions. [2024-06-27 22:31:42,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 92 transitions, 722 flow [2024-06-27 22:31:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:31:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:31:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-27 22:31:42,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:31:42,768 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 433 flow. Second operand 6 states and 102 transitions. [2024-06-27 22:31:42,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 92 transitions, 722 flow [2024-06-27 22:31:42,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 701 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 22:31:42,775 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 540 flow [2024-06-27 22:31:42,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2024-06-27 22:31:42,776 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-27 22:31:42,776 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 540 flow [2024-06-27 22:31:42,777 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) [2024-06-27 22:31:42,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:42,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:42,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:31:42,777 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:42,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:42,778 INFO L85 PathProgramCache]: Analyzing trace with hash -976258464, now seen corresponding path program 2 times [2024-06-27 22:31:42,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:42,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129086038] [2024-06-27 22:31:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:42,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:43,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:43,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129086038] [2024-06-27 22:31:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129086038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:43,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:43,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:31:43,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238068907] [2024-06-27 22:31:43,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:43,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:31:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:31:43,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:31:43,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:43,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 540 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) [2024-06-27 22:31:43,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:43,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:43,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:43,890 INFO L124 PetriNetUnfolderBase]: 739/1376 cut-off events. [2024-06-27 22:31:43,890 INFO L125 PetriNetUnfolderBase]: For 3505/3505 co-relation queries the response was YES. [2024-06-27 22:31:43,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4686 conditions, 1376 events. 739/1376 cut-off events. For 3505/3505 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7340 event pairs, 202 based on Foata normal form. 1/1324 useless extension candidates. Maximal degree in co-relation 4650. Up to 1192 conditions per place. [2024-06-27 22:31:43,901 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 71 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-27 22:31:43,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 751 flow [2024-06-27 22:31:43,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:31:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:31:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-27 22:31:43,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:31:43,903 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 540 flow. Second operand 6 states and 96 transitions. [2024-06-27 22:31:43,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 751 flow [2024-06-27 22:31:43,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 723 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 22:31:43,909 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 567 flow [2024-06-27 22:31:43,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=567, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2024-06-27 22:31:43,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-27 22:31:43,911 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 567 flow [2024-06-27 22:31:43,911 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) [2024-06-27 22:31:43,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:43,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:43,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:31:43,913 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:43,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:43,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1776441426, now seen corresponding path program 3 times [2024-06-27 22:31:43,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:43,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365472461] [2024-06-27 22:31:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:43,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:45,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:45,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365472461] [2024-06-27 22:31:45,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365472461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:45,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:45,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:31:45,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820365874] [2024-06-27 22:31:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:45,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:31:45,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:31:45,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:31:45,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:45,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 567 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) [2024-06-27 22:31:45,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:45,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:45,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:45,677 INFO L124 PetriNetUnfolderBase]: 764/1399 cut-off events. [2024-06-27 22:31:45,677 INFO L125 PetriNetUnfolderBase]: For 4038/4038 co-relation queries the response was YES. [2024-06-27 22:31:45,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4930 conditions, 1399 events. 764/1399 cut-off events. For 4038/4038 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7323 event pairs, 210 based on Foata normal form. 2/1354 useless extension candidates. Maximal degree in co-relation 4892. Up to 1122 conditions per place. [2024-06-27 22:31:45,686 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 77 selfloop transitions, 42 changer transitions 0/125 dead transitions. [2024-06-27 22:31:45,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 125 transitions, 1083 flow [2024-06-27 22:31:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 22:31:45,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:31:45,687 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 567 flow. Second operand 7 states and 119 transitions. [2024-06-27 22:31:45,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 125 transitions, 1083 flow [2024-06-27 22:31:45,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 125 transitions, 1047 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:31:45,694 INFO L231 Difference]: Finished difference. Result has 80 places, 105 transitions, 894 flow [2024-06-27 22:31:45,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=894, PETRI_PLACES=80, PETRI_TRANSITIONS=105} [2024-06-27 22:31:45,694 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-27 22:31:45,694 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 105 transitions, 894 flow [2024-06-27 22:31:45,694 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) [2024-06-27 22:31:45,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:45,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:45,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:31:45,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:45,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:45,695 INFO L85 PathProgramCache]: Analyzing trace with hash -976451377, now seen corresponding path program 1 times [2024-06-27 22:31:45,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:45,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949353873] [2024-06-27 22:31:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:45,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:47,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949353873] [2024-06-27 22:31:47,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949353873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:47,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:47,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:47,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725265070] [2024-06-27 22:31:47,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:47,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:47,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:47,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:47,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 105 transitions, 894 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) [2024-06-27 22:31:47,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:47,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:47,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:47,630 INFO L124 PetriNetUnfolderBase]: 762/1431 cut-off events. [2024-06-27 22:31:47,631 INFO L125 PetriNetUnfolderBase]: For 4789/4789 co-relation queries the response was YES. [2024-06-27 22:31:47,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 1431 events. 762/1431 cut-off events. For 4789/4789 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7684 event pairs, 217 based on Foata normal form. 1/1373 useless extension candidates. Maximal degree in co-relation 5305. Up to 1196 conditions per place. [2024-06-27 22:31:47,645 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 102 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-06-27 22:31:47,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 130 transitions, 1242 flow [2024-06-27 22:31:47,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 22:31:47,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2024-06-27 22:31:47,648 INFO L175 Difference]: Start difference. First operand has 80 places, 105 transitions, 894 flow. Second operand 7 states and 118 transitions. [2024-06-27 22:31:47,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 130 transitions, 1242 flow [2024-06-27 22:31:47,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 130 transitions, 1226 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 22:31:47,661 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 969 flow [2024-06-27 22:31:47,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=969, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2024-06-27 22:31:47,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-27 22:31:47,662 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 969 flow [2024-06-27 22:31:47,663 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) [2024-06-27 22:31:47,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:47,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:47,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:31:47,663 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:47,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:47,664 INFO L85 PathProgramCache]: Analyzing trace with hash 33847391, now seen corresponding path program 1 times [2024-06-27 22:31:47,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:47,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957023086] [2024-06-27 22:31:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:47,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:48,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957023086] [2024-06-27 22:31:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957023086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:48,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492172113] [2024-06-27 22:31:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:48,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:48,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:48,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:48,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 969 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) [2024-06-27 22:31:48,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:48,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:48,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:49,012 INFO L124 PetriNetUnfolderBase]: 822/1424 cut-off events. [2024-06-27 22:31:49,013 INFO L125 PetriNetUnfolderBase]: For 5877/5877 co-relation queries the response was YES. [2024-06-27 22:31:49,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5868 conditions, 1424 events. 822/1424 cut-off events. For 5877/5877 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7163 event pairs, 202 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 5823. Up to 1143 conditions per place. [2024-06-27 22:31:49,020 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 101 selfloop transitions, 45 changer transitions 0/152 dead transitions. [2024-06-27 22:31:49,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 152 transitions, 1558 flow [2024-06-27 22:31:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 22:31:49,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-27 22:31:49,022 INFO L175 Difference]: Start difference. First operand has 87 places, 109 transitions, 969 flow. Second operand 7 states and 123 transitions. [2024-06-27 22:31:49,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 152 transitions, 1558 flow [2024-06-27 22:31:49,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 152 transitions, 1529 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:31:49,032 INFO L231 Difference]: Finished difference. Result has 93 places, 127 transitions, 1255 flow [2024-06-27 22:31:49,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1255, PETRI_PLACES=93, PETRI_TRANSITIONS=127} [2024-06-27 22:31:49,032 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2024-06-27 22:31:49,032 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 127 transitions, 1255 flow [2024-06-27 22:31:49,033 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) [2024-06-27 22:31:49,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:49,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:49,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:31:49,033 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:49,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:49,033 INFO L85 PathProgramCache]: Analyzing trace with hash -205495747, now seen corresponding path program 2 times [2024-06-27 22:31:49,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:49,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946820981] [2024-06-27 22:31:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:49,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:49,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:49,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946820981] [2024-06-27 22:31:49,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946820981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:49,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:49,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:49,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046121170] [2024-06-27 22:31:49,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:49,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:49,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:49,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:49,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:49,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 127 transitions, 1255 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) [2024-06-27 22:31:49,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:49,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:49,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:50,282 INFO L124 PetriNetUnfolderBase]: 834/1524 cut-off events. [2024-06-27 22:31:50,283 INFO L125 PetriNetUnfolderBase]: For 7443/7443 co-relation queries the response was YES. [2024-06-27 22:31:50,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6676 conditions, 1524 events. 834/1524 cut-off events. For 7443/7443 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8089 event pairs, 220 based on Foata normal form. 1/1471 useless extension candidates. Maximal degree in co-relation 6627. Up to 1299 conditions per place. [2024-06-27 22:31:50,292 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 118 selfloop transitions, 29 changer transitions 0/153 dead transitions. [2024-06-27 22:31:50,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 153 transitions, 1721 flow [2024-06-27 22:31:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 22:31:50,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2024-06-27 22:31:50,294 INFO L175 Difference]: Start difference. First operand has 93 places, 127 transitions, 1255 flow. Second operand 7 states and 117 transitions. [2024-06-27 22:31:50,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 153 transitions, 1721 flow [2024-06-27 22:31:50,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 153 transitions, 1647 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 22:31:50,309 INFO L231 Difference]: Finished difference. Result has 98 places, 136 transitions, 1365 flow [2024-06-27 22:31:50,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1365, PETRI_PLACES=98, PETRI_TRANSITIONS=136} [2024-06-27 22:31:50,309 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2024-06-27 22:31:50,309 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 136 transitions, 1365 flow [2024-06-27 22:31:50,310 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) [2024-06-27 22:31:50,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:50,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:50,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:31:50,310 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:50,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:50,310 INFO L85 PathProgramCache]: Analyzing trace with hash 239844251, now seen corresponding path program 3 times [2024-06-27 22:31:50,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:50,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083706030] [2024-06-27 22:31:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:50,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:51,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:51,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083706030] [2024-06-27 22:31:51,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083706030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:51,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:51,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:51,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376470524] [2024-06-27 22:31:51,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:51,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:51,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:51,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:51,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:51,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:51,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 136 transitions, 1365 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) [2024-06-27 22:31:51,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:51,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:51,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:51,601 INFO L124 PetriNetUnfolderBase]: 836/1524 cut-off events. [2024-06-27 22:31:51,601 INFO L125 PetriNetUnfolderBase]: For 8517/8517 co-relation queries the response was YES. [2024-06-27 22:31:51,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6875 conditions, 1524 events. 836/1524 cut-off events. For 8517/8517 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8045 event pairs, 226 based on Foata normal form. 1/1472 useless extension candidates. Maximal degree in co-relation 6824. Up to 1322 conditions per place. [2024-06-27 22:31:51,611 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 126 selfloop transitions, 25 changer transitions 0/157 dead transitions. [2024-06-27 22:31:51,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 157 transitions, 1786 flow [2024-06-27 22:31:51,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 22:31:51,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444015444015444 [2024-06-27 22:31:51,613 INFO L175 Difference]: Start difference. First operand has 98 places, 136 transitions, 1365 flow. Second operand 7 states and 115 transitions. [2024-06-27 22:31:51,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 157 transitions, 1786 flow [2024-06-27 22:31:51,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 157 transitions, 1706 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 22:31:51,632 INFO L231 Difference]: Finished difference. Result has 103 places, 143 transitions, 1439 flow [2024-06-27 22:31:51,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1439, PETRI_PLACES=103, PETRI_TRANSITIONS=143} [2024-06-27 22:31:51,633 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-27 22:31:51,633 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 143 transitions, 1439 flow [2024-06-27 22:31:51,633 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) [2024-06-27 22:31:51,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:51,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:51,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:31:51,634 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:51,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash -764888967, now seen corresponding path program 4 times [2024-06-27 22:31:51,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:51,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671743026] [2024-06-27 22:31:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:51,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:52,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:52,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671743026] [2024-06-27 22:31:52,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671743026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:52,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:52,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:52,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279054908] [2024-06-27 22:31:52,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:52,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:52,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:52,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:52,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:53,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:53,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 143 transitions, 1439 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) [2024-06-27 22:31:53,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:53,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:53,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:53,701 INFO L124 PetriNetUnfolderBase]: 910/1643 cut-off events. [2024-06-27 22:31:53,702 INFO L125 PetriNetUnfolderBase]: For 10077/10077 co-relation queries the response was YES. [2024-06-27 22:31:53,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7488 conditions, 1643 events. 910/1643 cut-off events. For 10077/10077 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8866 event pairs, 175 based on Foata normal form. 3/1593 useless extension candidates. Maximal degree in co-relation 7433. Up to 1017 conditions per place. [2024-06-27 22:31:53,712 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 134 selfloop transitions, 79 changer transitions 0/219 dead transitions. [2024-06-27 22:31:53,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 219 transitions, 2479 flow [2024-06-27 22:31:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:31:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:31:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:31:53,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:31:53,714 INFO L175 Difference]: Start difference. First operand has 103 places, 143 transitions, 1439 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:31:53,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 219 transitions, 2479 flow [2024-06-27 22:31:53,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 219 transitions, 2434 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 22:31:53,734 INFO L231 Difference]: Finished difference. Result has 111 places, 175 transitions, 1955 flow [2024-06-27 22:31:53,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1955, PETRI_PLACES=111, PETRI_TRANSITIONS=175} [2024-06-27 22:31:53,734 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-27 22:31:53,734 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 175 transitions, 1955 flow [2024-06-27 22:31:53,735 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) [2024-06-27 22:31:53,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:53,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:53,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:31:53,735 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:53,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:53,735 INFO L85 PathProgramCache]: Analyzing trace with hash -205219878, now seen corresponding path program 1 times [2024-06-27 22:31:53,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:53,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120525600] [2024-06-27 22:31:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:53,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:55,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:55,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120525600] [2024-06-27 22:31:55,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120525600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:55,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:55,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:31:55,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414331136] [2024-06-27 22:31:55,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:55,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:31:55,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:31:55,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:31:55,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:55,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 175 transitions, 1955 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) [2024-06-27 22:31:55,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:55,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:55,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:56,312 INFO L124 PetriNetUnfolderBase]: 906/1635 cut-off events. [2024-06-27 22:31:56,312 INFO L125 PetriNetUnfolderBase]: For 12690/12690 co-relation queries the response was YES. [2024-06-27 22:31:56,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8413 conditions, 1635 events. 906/1635 cut-off events. For 12690/12690 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8766 event pairs, 192 based on Foata normal form. 2/1584 useless extension candidates. Maximal degree in co-relation 8353. Up to 1385 conditions per place. [2024-06-27 22:31:56,321 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 172 selfloop transitions, 26 changer transitions 0/204 dead transitions. [2024-06-27 22:31:56,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 204 transitions, 2489 flow [2024-06-27 22:31:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:31:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:31:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 22:31:56,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-27 22:31:56,323 INFO L175 Difference]: Start difference. First operand has 111 places, 175 transitions, 1955 flow. Second operand 8 states and 135 transitions. [2024-06-27 22:31:56,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 204 transitions, 2489 flow [2024-06-27 22:31:56,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 204 transitions, 2401 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-27 22:31:56,350 INFO L231 Difference]: Finished difference. Result has 117 places, 177 transitions, 1958 flow [2024-06-27 22:31:56,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1958, PETRI_PLACES=117, PETRI_TRANSITIONS=177} [2024-06-27 22:31:56,351 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-27 22:31:56,351 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 177 transitions, 1958 flow [2024-06-27 22:31:56,351 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) [2024-06-27 22:31:56,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:56,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:56,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:31:56,352 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:56,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:56,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1045455595, now seen corresponding path program 1 times [2024-06-27 22:31:56,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:56,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120261909] [2024-06-27 22:31:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:56,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:57,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120261909] [2024-06-27 22:31:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120261909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:57,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:57,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:57,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165164810] [2024-06-27 22:31:57,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:57,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:57,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:57,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:57,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:57,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:57,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 177 transitions, 1958 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:57,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:57,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:57,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:58,105 INFO L124 PetriNetUnfolderBase]: 969/1709 cut-off events. [2024-06-27 22:31:58,105 INFO L125 PetriNetUnfolderBase]: For 13197/13197 co-relation queries the response was YES. [2024-06-27 22:31:58,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8868 conditions, 1709 events. 969/1709 cut-off events. For 13197/13197 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9039 event pairs, 199 based on Foata normal form. 1/1665 useless extension candidates. Maximal degree in co-relation 8806. Up to 1417 conditions per place. [2024-06-27 22:31:58,118 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 165 selfloop transitions, 44 changer transitions 0/215 dead transitions. [2024-06-27 22:31:58,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 215 transitions, 2680 flow [2024-06-27 22:31:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:58,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 22:31:58,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:31:58,120 INFO L175 Difference]: Start difference. First operand has 117 places, 177 transitions, 1958 flow. Second operand 7 states and 119 transitions. [2024-06-27 22:31:58,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 215 transitions, 2680 flow [2024-06-27 22:31:58,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 215 transitions, 2625 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 22:31:58,150 INFO L231 Difference]: Finished difference. Result has 119 places, 193 transitions, 2188 flow [2024-06-27 22:31:58,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2188, PETRI_PLACES=119, PETRI_TRANSITIONS=193} [2024-06-27 22:31:58,150 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-27 22:31:58,150 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 193 transitions, 2188 flow [2024-06-27 22:31:58,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:58,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:58,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:58,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:31:58,151 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:58,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:58,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1510996437, now seen corresponding path program 2 times [2024-06-27 22:31:58,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:58,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524947052] [2024-06-27 22:31:58,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:58,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:59,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:59,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524947052] [2024-06-27 22:31:59,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524947052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:59,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:59,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:59,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092189560] [2024-06-27 22:31:59,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:59,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:59,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:59,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:31:59,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 193 transitions, 2188 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:59,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:59,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:31:59,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:59,999 INFO L124 PetriNetUnfolderBase]: 989/1721 cut-off events. [2024-06-27 22:32:00,000 INFO L125 PetriNetUnfolderBase]: For 14499/14499 co-relation queries the response was YES. [2024-06-27 22:32:00,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9272 conditions, 1721 events. 989/1721 cut-off events. For 14499/14499 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8984 event pairs, 207 based on Foata normal form. 2/1685 useless extension candidates. Maximal degree in co-relation 9208. Up to 1369 conditions per place. [2024-06-27 22:32:00,014 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 149 selfloop transitions, 79 changer transitions 0/234 dead transitions. [2024-06-27 22:32:00,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 234 transitions, 3009 flow [2024-06-27 22:32:00,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 22:32:00,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876447876447875 [2024-06-27 22:32:00,016 INFO L175 Difference]: Start difference. First operand has 119 places, 193 transitions, 2188 flow. Second operand 7 states and 124 transitions. [2024-06-27 22:32:00,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 234 transitions, 3009 flow [2024-06-27 22:32:00,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 234 transitions, 2931 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:00,052 INFO L231 Difference]: Finished difference. Result has 125 places, 212 transitions, 2593 flow [2024-06-27 22:32:00,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2110, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2593, PETRI_PLACES=125, PETRI_TRANSITIONS=212} [2024-06-27 22:32:00,053 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-06-27 22:32:00,053 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 212 transitions, 2593 flow [2024-06-27 22:32:00,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:00,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:00,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:00,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:32:00,053 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:00,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:00,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1049270827, now seen corresponding path program 1 times [2024-06-27 22:32:00,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:00,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948274533] [2024-06-27 22:32:00,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:00,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:01,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:01,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948274533] [2024-06-27 22:32:01,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948274533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:01,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:01,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:01,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184370171] [2024-06-27 22:32:01,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:01,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:01,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:01,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:01,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:01,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:01,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 212 transitions, 2593 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) [2024-06-27 22:32:01,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:01,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:01,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:01,910 INFO L124 PetriNetUnfolderBase]: 1081/1945 cut-off events. [2024-06-27 22:32:01,910 INFO L125 PetriNetUnfolderBase]: For 17497/17497 co-relation queries the response was YES. [2024-06-27 22:32:01,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10625 conditions, 1945 events. 1081/1945 cut-off events. For 17497/17497 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10840 event pairs, 199 based on Foata normal form. 2/1883 useless extension candidates. Maximal degree in co-relation 10557. Up to 1298 conditions per place. [2024-06-27 22:32:01,926 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 191 selfloop transitions, 71 changer transitions 0/268 dead transitions. [2024-06-27 22:32:01,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 268 transitions, 3606 flow [2024-06-27 22:32:01,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:32:01,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:32:01,932 INFO L175 Difference]: Start difference. First operand has 125 places, 212 transitions, 2593 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:32:01,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 268 transitions, 3606 flow [2024-06-27 22:32:02,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 268 transitions, 3488 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:02,023 INFO L231 Difference]: Finished difference. Result has 133 places, 231 transitions, 2965 flow [2024-06-27 22:32:02,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2965, PETRI_PLACES=133, PETRI_TRANSITIONS=231} [2024-06-27 22:32:02,024 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-27 22:32:02,024 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 231 transitions, 2965 flow [2024-06-27 22:32:02,024 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) [2024-06-27 22:32:02,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:02,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:02,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:32:02,025 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:02,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1507277212, now seen corresponding path program 1 times [2024-06-27 22:32:02,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:02,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232190717] [2024-06-27 22:32:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:02,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:02,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232190717] [2024-06-27 22:32:02,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232190717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:02,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:02,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:02,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919435836] [2024-06-27 22:32:02,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:02,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:02,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:02,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:02,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:03,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:03,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 231 transitions, 2965 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:03,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:03,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:03,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:03,436 INFO L124 PetriNetUnfolderBase]: 1097/1893 cut-off events. [2024-06-27 22:32:03,436 INFO L125 PetriNetUnfolderBase]: For 20191/20191 co-relation queries the response was YES. [2024-06-27 22:32:03,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11290 conditions, 1893 events. 1097/1893 cut-off events. For 20191/20191 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10245 event pairs, 224 based on Foata normal form. 1/1854 useless extension candidates. Maximal degree in co-relation 11218. Up to 1526 conditions per place. [2024-06-27 22:32:03,451 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 180 selfloop transitions, 85 changer transitions 0/271 dead transitions. [2024-06-27 22:32:03,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 271 transitions, 3937 flow [2024-06-27 22:32:03,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:03,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 22:32:03,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876447876447875 [2024-06-27 22:32:03,453 INFO L175 Difference]: Start difference. First operand has 133 places, 231 transitions, 2965 flow. Second operand 7 states and 124 transitions. [2024-06-27 22:32:03,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 271 transitions, 3937 flow [2024-06-27 22:32:03,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 271 transitions, 3852 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:03,512 INFO L231 Difference]: Finished difference. Result has 140 places, 248 transitions, 3422 flow [2024-06-27 22:32:03,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2880, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3422, PETRI_PLACES=140, PETRI_TRANSITIONS=248} [2024-06-27 22:32:03,513 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-27 22:32:03,513 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 248 transitions, 3422 flow [2024-06-27 22:32:03,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:03,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:03,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:03,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:32:03,513 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:03,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:03,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1049270610, now seen corresponding path program 2 times [2024-06-27 22:32:03,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:03,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126197127] [2024-06-27 22:32:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:03,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:04,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:04,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126197127] [2024-06-27 22:32:04,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126197127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:04,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:04,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:04,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265494423] [2024-06-27 22:32:04,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:04,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:04,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:04,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:04,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 248 transitions, 3422 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:04,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:04,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:04,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:04,870 INFO L124 PetriNetUnfolderBase]: 1111/1922 cut-off events. [2024-06-27 22:32:04,870 INFO L125 PetriNetUnfolderBase]: For 21859/21859 co-relation queries the response was YES. [2024-06-27 22:32:04,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11839 conditions, 1922 events. 1111/1922 cut-off events. For 21859/21859 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10501 event pairs, 221 based on Foata normal form. 1/1881 useless extension candidates. Maximal degree in co-relation 11763. Up to 1582 conditions per place. [2024-06-27 22:32:04,885 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 182 selfloop transitions, 87 changer transitions 0/275 dead transitions. [2024-06-27 22:32:04,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 275 transitions, 4237 flow [2024-06-27 22:32:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:04,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 22:32:04,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47104247104247104 [2024-06-27 22:32:04,887 INFO L175 Difference]: Start difference. First operand has 140 places, 248 transitions, 3422 flow. Second operand 7 states and 122 transitions. [2024-06-27 22:32:04,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 275 transitions, 4237 flow [2024-06-27 22:32:04,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 275 transitions, 4105 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:04,951 INFO L231 Difference]: Finished difference. Result has 144 places, 257 transitions, 3625 flow [2024-06-27 22:32:04,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3625, PETRI_PLACES=144, PETRI_TRANSITIONS=257} [2024-06-27 22:32:04,951 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-27 22:32:04,951 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 257 transitions, 3625 flow [2024-06-27 22:32:04,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:04,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:04,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:04,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:32:04,952 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:04,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:04,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1881459745, now seen corresponding path program 2 times [2024-06-27 22:32:04,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:04,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682893758] [2024-06-27 22:32:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:04,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:05,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682893758] [2024-06-27 22:32:05,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682893758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:05,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:05,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604681628] [2024-06-27 22:32:05,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:05,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:05,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:06,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:06,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 257 transitions, 3625 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) [2024-06-27 22:32:06,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:06,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:06,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:06,648 INFO L124 PetriNetUnfolderBase]: 1129/1959 cut-off events. [2024-06-27 22:32:06,649 INFO L125 PetriNetUnfolderBase]: For 23188/23188 co-relation queries the response was YES. [2024-06-27 22:32:06,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12116 conditions, 1959 events. 1129/1959 cut-off events. For 23188/23188 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10776 event pairs, 207 based on Foata normal form. 1/1915 useless extension candidates. Maximal degree in co-relation 12039. Up to 1658 conditions per place. [2024-06-27 22:32:06,665 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 257 selfloop transitions, 40 changer transitions 0/303 dead transitions. [2024-06-27 22:32:06,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 303 transitions, 4658 flow [2024-06-27 22:32:06,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 22:32:06,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 22:32:06,667 INFO L175 Difference]: Start difference. First operand has 144 places, 257 transitions, 3625 flow. Second operand 9 states and 147 transitions. [2024-06-27 22:32:06,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 303 transitions, 4658 flow [2024-06-27 22:32:06,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 303 transitions, 4526 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:06,731 INFO L231 Difference]: Finished difference. Result has 152 places, 269 transitions, 3820 flow [2024-06-27 22:32:06,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3493, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3820, PETRI_PLACES=152, PETRI_TRANSITIONS=269} [2024-06-27 22:32:06,732 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-27 22:32:06,732 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 269 transitions, 3820 flow [2024-06-27 22:32:06,732 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) [2024-06-27 22:32:06,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:06,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:06,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:32:06,733 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:06,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1154465365, now seen corresponding path program 3 times [2024-06-27 22:32:06,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:06,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703685518] [2024-06-27 22:32:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:06,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703685518] [2024-06-27 22:32:07,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703685518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:07,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177821962] [2024-06-27 22:32:07,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:07,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:07,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:07,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 269 transitions, 3820 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) [2024-06-27 22:32:07,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:07,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:07,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:08,468 INFO L124 PetriNetUnfolderBase]: 1150/1996 cut-off events. [2024-06-27 22:32:08,468 INFO L125 PetriNetUnfolderBase]: For 25341/25341 co-relation queries the response was YES. [2024-06-27 22:32:08,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12483 conditions, 1996 events. 1150/1996 cut-off events. For 25341/25341 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11041 event pairs, 219 based on Foata normal form. 1/1950 useless extension candidates. Maximal degree in co-relation 12403. Up to 1770 conditions per place. [2024-06-27 22:32:08,486 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 266 selfloop transitions, 30 changer transitions 0/302 dead transitions. [2024-06-27 22:32:08,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 302 transitions, 4605 flow [2024-06-27 22:32:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 22:32:08,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:32:08,488 INFO L175 Difference]: Start difference. First operand has 152 places, 269 transitions, 3820 flow. Second operand 8 states and 136 transitions. [2024-06-27 22:32:08,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 302 transitions, 4605 flow [2024-06-27 22:32:08,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 302 transitions, 4499 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:08,569 INFO L231 Difference]: Finished difference. Result has 158 places, 276 transitions, 3893 flow [2024-06-27 22:32:08,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3721, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3893, PETRI_PLACES=158, PETRI_TRANSITIONS=276} [2024-06-27 22:32:08,569 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-27 22:32:08,570 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 276 transitions, 3893 flow [2024-06-27 22:32:08,570 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) [2024-06-27 22:32:08,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:08,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:08,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:32:08,570 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:08,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:08,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1154761105, now seen corresponding path program 4 times [2024-06-27 22:32:08,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:08,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202009117] [2024-06-27 22:32:08,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:08,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:09,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:09,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202009117] [2024-06-27 22:32:09,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202009117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:09,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:09,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:09,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780512490] [2024-06-27 22:32:09,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:09,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:09,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:09,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:09,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:09,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:09,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 276 transitions, 3893 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) [2024-06-27 22:32:09,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:09,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:09,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:10,231 INFO L124 PetriNetUnfolderBase]: 1156/2001 cut-off events. [2024-06-27 22:32:10,231 INFO L125 PetriNetUnfolderBase]: For 25703/25703 co-relation queries the response was YES. [2024-06-27 22:32:10,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12621 conditions, 2001 events. 1156/2001 cut-off events. For 25703/25703 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11010 event pairs, 215 based on Foata normal form. 1/1957 useless extension candidates. Maximal degree in co-relation 12536. Up to 1748 conditions per place. [2024-06-27 22:32:10,245 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 267 selfloop transitions, 37 changer transitions 0/310 dead transitions. [2024-06-27 22:32:10,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 310 transitions, 4723 flow [2024-06-27 22:32:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 22:32:10,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 22:32:10,247 INFO L175 Difference]: Start difference. First operand has 158 places, 276 transitions, 3893 flow. Second operand 8 states and 138 transitions. [2024-06-27 22:32:10,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 310 transitions, 4723 flow [2024-06-27 22:32:10,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 310 transitions, 4620 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:10,327 INFO L231 Difference]: Finished difference. Result has 164 places, 280 transitions, 3954 flow [2024-06-27 22:32:10,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3804, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3954, PETRI_PLACES=164, PETRI_TRANSITIONS=280} [2024-06-27 22:32:10,328 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-27 22:32:10,328 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 280 transitions, 3954 flow [2024-06-27 22:32:10,328 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) [2024-06-27 22:32:10,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:10,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:10,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:32:10,328 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:10,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1154761322, now seen corresponding path program 3 times [2024-06-27 22:32:10,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:10,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832708998] [2024-06-27 22:32:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:10,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:11,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:11,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832708998] [2024-06-27 22:32:11,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832708998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:11,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:11,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:11,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953624034] [2024-06-27 22:32:11,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:11,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:11,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:11,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:11,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:11,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:11,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 280 transitions, 3954 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:11,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:11,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:11,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:11,824 INFO L124 PetriNetUnfolderBase]: 1156/2010 cut-off events. [2024-06-27 22:32:11,824 INFO L125 PetriNetUnfolderBase]: For 26795/26795 co-relation queries the response was YES. [2024-06-27 22:32:11,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12656 conditions, 2010 events. 1156/2010 cut-off events. For 26795/26795 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11164 event pairs, 222 based on Foata normal form. 1/1963 useless extension candidates. Maximal degree in co-relation 12568. Up to 1803 conditions per place. [2024-06-27 22:32:11,844 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 259 selfloop transitions, 32 changer transitions 0/297 dead transitions. [2024-06-27 22:32:11,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 297 transitions, 4631 flow [2024-06-27 22:32:11,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-27 22:32:11,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44787644787644787 [2024-06-27 22:32:11,846 INFO L175 Difference]: Start difference. First operand has 164 places, 280 transitions, 3954 flow. Second operand 7 states and 116 transitions. [2024-06-27 22:32:11,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 297 transitions, 4631 flow [2024-06-27 22:32:11,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 297 transitions, 4525 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:11,942 INFO L231 Difference]: Finished difference. Result has 167 places, 283 transitions, 3977 flow [2024-06-27 22:32:11,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3854, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3977, PETRI_PLACES=167, PETRI_TRANSITIONS=283} [2024-06-27 22:32:11,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-27 22:32:11,943 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 283 transitions, 3977 flow [2024-06-27 22:32:11,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:11,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:11,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:11,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:32:11,943 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:11,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 973212683, now seen corresponding path program 3 times [2024-06-27 22:32:11,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:11,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405401273] [2024-06-27 22:32:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:11,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:13,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:13,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405401273] [2024-06-27 22:32:13,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405401273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:13,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:13,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:13,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112325153] [2024-06-27 22:32:13,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:13,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:13,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:13,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:13,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:13,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:13,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 283 transitions, 3977 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) [2024-06-27 22:32:13,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:13,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:13,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:13,521 INFO L124 PetriNetUnfolderBase]: 1127/2065 cut-off events. [2024-06-27 22:32:13,521 INFO L125 PetriNetUnfolderBase]: For 27712/27715 co-relation queries the response was YES. [2024-06-27 22:32:13,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12610 conditions, 2065 events. 1127/2065 cut-off events. For 27712/27715 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12079 event pairs, 206 based on Foata normal form. 2/1976 useless extension candidates. Maximal degree in co-relation 12520. Up to 1326 conditions per place. [2024-06-27 22:32:13,539 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 201 selfloop transitions, 123 changer transitions 0/333 dead transitions. [2024-06-27 22:32:13,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 333 transitions, 5220 flow [2024-06-27 22:32:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-27 22:32:13,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545045045045045 [2024-06-27 22:32:13,540 INFO L175 Difference]: Start difference. First operand has 167 places, 283 transitions, 3977 flow. Second operand 6 states and 121 transitions. [2024-06-27 22:32:13,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 333 transitions, 5220 flow [2024-06-27 22:32:13,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 333 transitions, 5134 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:13,661 INFO L231 Difference]: Finished difference. Result has 171 places, 303 transitions, 4573 flow [2024-06-27 22:32:13,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3891, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4573, PETRI_PLACES=171, PETRI_TRANSITIONS=303} [2024-06-27 22:32:13,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-27 22:32:13,662 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 303 transitions, 4573 flow [2024-06-27 22:32:13,662 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) [2024-06-27 22:32:13,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:13,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:13,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:32:13,663 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:13,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:13,663 INFO L85 PathProgramCache]: Analyzing trace with hash 986247563, now seen corresponding path program 4 times [2024-06-27 22:32:13,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:13,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852200268] [2024-06-27 22:32:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:13,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:14,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:14,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852200268] [2024-06-27 22:32:14,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852200268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:14,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:14,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:14,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596253591] [2024-06-27 22:32:14,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:14,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:14,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:14,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:14,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 303 transitions, 4573 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) [2024-06-27 22:32:14,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:14,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:14,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:15,221 INFO L124 PetriNetUnfolderBase]: 1144/2080 cut-off events. [2024-06-27 22:32:15,221 INFO L125 PetriNetUnfolderBase]: For 30939/30942 co-relation queries the response was YES. [2024-06-27 22:32:15,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13590 conditions, 2080 events. 1144/2080 cut-off events. For 30939/30942 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12047 event pairs, 203 based on Foata normal form. 2/1996 useless extension candidates. Maximal degree in co-relation 13497. Up to 1469 conditions per place. [2024-06-27 22:32:15,238 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 204 selfloop transitions, 124 changer transitions 0/337 dead transitions. [2024-06-27 22:32:15,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 337 transitions, 5627 flow [2024-06-27 22:32:15,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-27 22:32:15,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-06-27 22:32:15,240 INFO L175 Difference]: Start difference. First operand has 171 places, 303 transitions, 4573 flow. Second operand 6 states and 118 transitions. [2024-06-27 22:32:15,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 337 transitions, 5627 flow [2024-06-27 22:32:15,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 337 transitions, 5527 flow, removed 43 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:15,340 INFO L231 Difference]: Finished difference. Result has 178 places, 316 transitions, 5107 flow [2024-06-27 22:32:15,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4493, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5107, PETRI_PLACES=178, PETRI_TRANSITIONS=316} [2024-06-27 22:32:15,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-27 22:32:15,341 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 316 transitions, 5107 flow [2024-06-27 22:32:15,341 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) [2024-06-27 22:32:15,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:15,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:15,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:32:15,341 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:15,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:15,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2058530008, now seen corresponding path program 4 times [2024-06-27 22:32:15,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:15,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686355242] [2024-06-27 22:32:15,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:15,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:16,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:16,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686355242] [2024-06-27 22:32:16,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686355242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:16,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:16,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:16,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265139639] [2024-06-27 22:32:16,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:16,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:16,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:16,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:16,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:16,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:16,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 316 transitions, 5107 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:16,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:16,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:16,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:17,611 INFO L124 PetriNetUnfolderBase]: 1236/2210 cut-off events. [2024-06-27 22:32:17,611 INFO L125 PetriNetUnfolderBase]: For 34788/34788 co-relation queries the response was YES. [2024-06-27 22:32:17,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15267 conditions, 2210 events. 1236/2210 cut-off events. For 34788/34788 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12625 event pairs, 201 based on Foata normal form. 1/2140 useless extension candidates. Maximal degree in co-relation 15170. Up to 1354 conditions per place. [2024-06-27 22:32:17,633 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 210 selfloop transitions, 159 changer transitions 0/375 dead transitions. [2024-06-27 22:32:17,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 375 transitions, 6668 flow [2024-06-27 22:32:17,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 22:32:17,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:32:17,635 INFO L175 Difference]: Start difference. First operand has 178 places, 316 transitions, 5107 flow. Second operand 8 states and 144 transitions. [2024-06-27 22:32:17,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 375 transitions, 6668 flow [2024-06-27 22:32:17,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 375 transitions, 6433 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:17,738 INFO L231 Difference]: Finished difference. Result has 185 places, 343 transitions, 5860 flow [2024-06-27 22:32:17,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4900, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5860, PETRI_PLACES=185, PETRI_TRANSITIONS=343} [2024-06-27 22:32:17,739 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-06-27 22:32:17,739 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 343 transitions, 5860 flow [2024-06-27 22:32:17,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:17,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:17,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:17,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:32:17,739 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:17,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:17,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2058247288, now seen corresponding path program 5 times [2024-06-27 22:32:17,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:17,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451310759] [2024-06-27 22:32:17,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:17,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:18,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451310759] [2024-06-27 22:32:18,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451310759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:18,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:18,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:18,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014585241] [2024-06-27 22:32:18,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:18,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:18,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:18,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:18,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:18,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:18,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 343 transitions, 5860 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:18,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:18,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:18,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:19,940 INFO L124 PetriNetUnfolderBase]: 1258/2263 cut-off events. [2024-06-27 22:32:19,941 INFO L125 PetriNetUnfolderBase]: For 37075/37075 co-relation queries the response was YES. [2024-06-27 22:32:19,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16079 conditions, 2263 events. 1258/2263 cut-off events. For 37075/37075 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13097 event pairs, 190 based on Foata normal form. 1/2188 useless extension candidates. Maximal degree in co-relation 15978. Up to 1367 conditions per place. [2024-06-27 22:32:19,958 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 206 selfloop transitions, 177 changer transitions 0/389 dead transitions. [2024-06-27 22:32:19,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 389 transitions, 7181 flow [2024-06-27 22:32:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 22:32:19,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 22:32:19,960 INFO L175 Difference]: Start difference. First operand has 185 places, 343 transitions, 5860 flow. Second operand 8 states and 142 transitions. [2024-06-27 22:32:19,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 389 transitions, 7181 flow [2024-06-27 22:32:20,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 389 transitions, 6922 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:20,085 INFO L231 Difference]: Finished difference. Result has 192 places, 365 transitions, 6498 flow [2024-06-27 22:32:20,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5617, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6498, PETRI_PLACES=192, PETRI_TRANSITIONS=365} [2024-06-27 22:32:20,086 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-27 22:32:20,086 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 365 transitions, 6498 flow [2024-06-27 22:32:20,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:20,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:20,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:20,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:32:20,087 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:20,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:20,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2058247505, now seen corresponding path program 5 times [2024-06-27 22:32:20,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:20,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208815285] [2024-06-27 22:32:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:21,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:21,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208815285] [2024-06-27 22:32:21,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208815285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:21,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:21,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:21,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662738103] [2024-06-27 22:32:21,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:21,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:21,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:21,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:21,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:21,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:21,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 365 transitions, 6498 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) [2024-06-27 22:32:21,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:21,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:21,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:22,253 INFO L124 PetriNetUnfolderBase]: 1365/2434 cut-off events. [2024-06-27 22:32:22,253 INFO L125 PetriNetUnfolderBase]: For 40370/40370 co-relation queries the response was YES. [2024-06-27 22:32:22,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17464 conditions, 2434 events. 1365/2434 cut-off events. For 40370/40370 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14164 event pairs, 196 based on Foata normal form. 2/2360 useless extension candidates. Maximal degree in co-relation 17359. Up to 1607 conditions per place. [2024-06-27 22:32:22,277 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 305 selfloop transitions, 137 changer transitions 0/448 dead transitions. [2024-06-27 22:32:22,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 448 transitions, 8190 flow [2024-06-27 22:32:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:22,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:32:22,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-06-27 22:32:22,279 INFO L175 Difference]: Start difference. First operand has 192 places, 365 transitions, 6498 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:32:22,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 448 transitions, 8190 flow [2024-06-27 22:32:22,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 448 transitions, 7941 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:22,437 INFO L231 Difference]: Finished difference. Result has 198 places, 397 transitions, 6973 flow [2024-06-27 22:32:22,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6251, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6973, PETRI_PLACES=198, PETRI_TRANSITIONS=397} [2024-06-27 22:32:22,437 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-27 22:32:22,437 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 397 transitions, 6973 flow [2024-06-27 22:32:22,438 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) [2024-06-27 22:32:22,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:22,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:22,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:32:22,438 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:22,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:22,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1950673822, now seen corresponding path program 1 times [2024-06-27 22:32:22,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:22,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84159888] [2024-06-27 22:32:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:22,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:23,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:23,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84159888] [2024-06-27 22:32:23,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84159888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:23,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:23,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:23,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473276821] [2024-06-27 22:32:23,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:23,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:23,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:23,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:23,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:23,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 397 transitions, 6973 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:23,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:23,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:23,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:24,611 INFO L124 PetriNetUnfolderBase]: 1465/2521 cut-off events. [2024-06-27 22:32:24,612 INFO L125 PetriNetUnfolderBase]: For 48613/48613 co-relation queries the response was YES. [2024-06-27 22:32:24,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19116 conditions, 2521 events. 1465/2521 cut-off events. For 48613/48613 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14572 event pairs, 250 based on Foata normal form. 2/2473 useless extension candidates. Maximal degree in co-relation 19009. Up to 1868 conditions per place. [2024-06-27 22:32:24,636 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 297 selfloop transitions, 140 changer transitions 0/443 dead transitions. [2024-06-27 22:32:24,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 443 transitions, 8388 flow [2024-06-27 22:32:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 22:32:24,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 22:32:24,638 INFO L175 Difference]: Start difference. First operand has 198 places, 397 transitions, 6973 flow. Second operand 8 states and 143 transitions. [2024-06-27 22:32:24,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 443 transitions, 8388 flow [2024-06-27 22:32:24,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 443 transitions, 8267 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:24,901 INFO L231 Difference]: Finished difference. Result has 205 places, 414 transitions, 7491 flow [2024-06-27 22:32:24,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6860, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7491, PETRI_PLACES=205, PETRI_TRANSITIONS=414} [2024-06-27 22:32:24,901 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 22:32:24,901 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 414 transitions, 7491 flow [2024-06-27 22:32:24,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:24,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:24,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:24,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:32:24,902 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:24,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:24,903 INFO L85 PathProgramCache]: Analyzing trace with hash 400955874, now seen corresponding path program 1 times [2024-06-27 22:32:24,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:24,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794108295] [2024-06-27 22:32:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:24,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:26,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:26,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794108295] [2024-06-27 22:32:26,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794108295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:26,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:26,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:26,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726280897] [2024-06-27 22:32:26,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:26,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:26,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:26,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:26,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:26,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:26,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 414 transitions, 7491 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:26,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:26,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:26,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:27,242 INFO L124 PetriNetUnfolderBase]: 1509/2586 cut-off events. [2024-06-27 22:32:27,242 INFO L125 PetriNetUnfolderBase]: For 52063/52063 co-relation queries the response was YES. [2024-06-27 22:32:27,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20114 conditions, 2586 events. 1509/2586 cut-off events. For 52063/52063 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14947 event pairs, 263 based on Foata normal form. 1/2538 useless extension candidates. Maximal degree in co-relation 20004. Up to 2026 conditions per place. [2024-06-27 22:32:27,269 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 306 selfloop transitions, 151 changer transitions 0/463 dead transitions. [2024-06-27 22:32:27,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 463 transitions, 9000 flow [2024-06-27 22:32:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:32:27,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:32:27,271 INFO L175 Difference]: Start difference. First operand has 205 places, 414 transitions, 7491 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:32:27,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 463 transitions, 9000 flow [2024-06-27 22:32:27,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 463 transitions, 8834 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:27,459 INFO L231 Difference]: Finished difference. Result has 211 places, 437 transitions, 8003 flow [2024-06-27 22:32:27,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7325, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8003, PETRI_PLACES=211, PETRI_TRANSITIONS=437} [2024-06-27 22:32:27,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-06-27 22:32:27,460 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 437 transitions, 8003 flow [2024-06-27 22:32:27,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:27,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:27,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:27,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:32:27,460 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:27,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:27,461 INFO L85 PathProgramCache]: Analyzing trace with hash 400955750, now seen corresponding path program 2 times [2024-06-27 22:32:27,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:27,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650854597] [2024-06-27 22:32:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:27,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:28,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:28,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650854597] [2024-06-27 22:32:28,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650854597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:28,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:28,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:28,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114372261] [2024-06-27 22:32:28,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:28,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:28,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:28,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:28,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:28,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:28,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 437 transitions, 8003 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:28,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:28,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:28,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:29,784 INFO L124 PetriNetUnfolderBase]: 1524/2614 cut-off events. [2024-06-27 22:32:29,784 INFO L125 PetriNetUnfolderBase]: For 53260/53260 co-relation queries the response was YES. [2024-06-27 22:32:29,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20457 conditions, 2614 events. 1524/2614 cut-off events. For 53260/53260 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 15198 event pairs, 260 based on Foata normal form. 2/2566 useless extension candidates. Maximal degree in co-relation 20344. Up to 2073 conditions per place. [2024-06-27 22:32:29,811 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 324 selfloop transitions, 136 changer transitions 0/466 dead transitions. [2024-06-27 22:32:29,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 466 transitions, 9219 flow [2024-06-27 22:32:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:32:29,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 22:32:29,813 INFO L175 Difference]: Start difference. First operand has 211 places, 437 transitions, 8003 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:32:29,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 466 transitions, 9219 flow [2024-06-27 22:32:30,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 466 transitions, 9000 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:30,012 INFO L231 Difference]: Finished difference. Result has 216 places, 439 transitions, 8096 flow [2024-06-27 22:32:30,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7784, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8096, PETRI_PLACES=216, PETRI_TRANSITIONS=439} [2024-06-27 22:32:30,013 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 175 predicate places. [2024-06-27 22:32:30,013 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 439 transitions, 8096 flow [2024-06-27 22:32:30,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:30,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:30,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:30,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:32:30,014 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:30,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:30,014 INFO L85 PathProgramCache]: Analyzing trace with hash 403752384, now seen corresponding path program 2 times [2024-06-27 22:32:30,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:30,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816645250] [2024-06-27 22:32:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:30,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:31,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:31,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816645250] [2024-06-27 22:32:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816645250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:31,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:31,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:31,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116753170] [2024-06-27 22:32:31,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:31,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:31,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:31,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:31,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:31,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 439 transitions, 8096 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:31,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:31,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:31,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:32,316 INFO L124 PetriNetUnfolderBase]: 1542/2641 cut-off events. [2024-06-27 22:32:32,317 INFO L125 PetriNetUnfolderBase]: For 55006/55006 co-relation queries the response was YES. [2024-06-27 22:32:32,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20967 conditions, 2641 events. 1542/2641 cut-off events. For 55006/55006 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15344 event pairs, 262 based on Foata normal form. 1/2593 useless extension candidates. Maximal degree in co-relation 20852. Up to 2194 conditions per place. [2024-06-27 22:32:32,347 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 332 selfloop transitions, 132 changer transitions 0/470 dead transitions. [2024-06-27 22:32:32,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 470 transitions, 9341 flow [2024-06-27 22:32:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 22:32:32,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 22:32:32,349 INFO L175 Difference]: Start difference. First operand has 216 places, 439 transitions, 8096 flow. Second operand 8 states and 138 transitions. [2024-06-27 22:32:32,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 470 transitions, 9341 flow [2024-06-27 22:32:32,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 470 transitions, 9069 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:32,565 INFO L231 Difference]: Finished difference. Result has 219 places, 446 transitions, 8219 flow [2024-06-27 22:32:32,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7824, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8219, PETRI_PLACES=219, PETRI_TRANSITIONS=446} [2024-06-27 22:32:32,565 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 178 predicate places. [2024-06-27 22:32:32,565 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 446 transitions, 8219 flow [2024-06-27 22:32:32,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:32,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:32,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:32,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:32:32,566 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:32,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1947816862, now seen corresponding path program 3 times [2024-06-27 22:32:32,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:32,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814154888] [2024-06-27 22:32:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:32,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:33,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:33,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814154888] [2024-06-27 22:32:33,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814154888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:33,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:33,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:33,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051694361] [2024-06-27 22:32:33,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:33,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:33,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:33,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:33,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:33,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:33,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 446 transitions, 8219 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:33,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:33,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:33,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:34,743 INFO L124 PetriNetUnfolderBase]: 1557/2666 cut-off events. [2024-06-27 22:32:34,744 INFO L125 PetriNetUnfolderBase]: For 56933/56933 co-relation queries the response was YES. [2024-06-27 22:32:34,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21058 conditions, 2666 events. 1557/2666 cut-off events. For 56933/56933 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15521 event pairs, 260 based on Foata normal form. 4/2621 useless extension candidates. Maximal degree in co-relation 20942. Up to 2194 conditions per place. [2024-06-27 22:32:34,780 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 338 selfloop transitions, 128 changer transitions 0/472 dead transitions. [2024-06-27 22:32:34,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 472 transitions, 9354 flow [2024-06-27 22:32:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:32:34,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 22:32:34,782 INFO L175 Difference]: Start difference. First operand has 219 places, 446 transitions, 8219 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:32:34,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 472 transitions, 9354 flow [2024-06-27 22:32:35,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 472 transitions, 9143 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:35,019 INFO L231 Difference]: Finished difference. Result has 222 places, 449 transitions, 8320 flow [2024-06-27 22:32:35,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8008, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8320, PETRI_PLACES=222, PETRI_TRANSITIONS=449} [2024-06-27 22:32:35,020 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-27 22:32:35,020 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 449 transitions, 8320 flow [2024-06-27 22:32:35,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:35,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:35,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:35,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:32:35,021 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:35,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1832525568, now seen corresponding path program 3 times [2024-06-27 22:32:35,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:35,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365692153] [2024-06-27 22:32:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:35,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:36,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:36,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365692153] [2024-06-27 22:32:36,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365692153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:36,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:36,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:36,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942150709] [2024-06-27 22:32:36,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:36,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:36,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:36,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:36,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:36,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:36,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 449 transitions, 8320 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:36,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:36,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:36,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:37,027 INFO L124 PetriNetUnfolderBase]: 1565/2679 cut-off events. [2024-06-27 22:32:37,027 INFO L125 PetriNetUnfolderBase]: For 57145/57145 co-relation queries the response was YES. [2024-06-27 22:32:37,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21220 conditions, 2679 events. 1565/2679 cut-off events. For 57145/57145 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15655 event pairs, 254 based on Foata normal form. 1/2630 useless extension candidates. Maximal degree in co-relation 21103. Up to 2135 conditions per place. [2024-06-27 22:32:37,057 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 333 selfloop transitions, 152 changer transitions 0/491 dead transitions. [2024-06-27 22:32:37,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 491 transitions, 9831 flow [2024-06-27 22:32:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 22:32:37,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 22:32:37,059 INFO L175 Difference]: Start difference. First operand has 222 places, 449 transitions, 8320 flow. Second operand 8 states and 142 transitions. [2024-06-27 22:32:37,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 491 transitions, 9831 flow [2024-06-27 22:32:37,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 491 transitions, 9560 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:32:37,301 INFO L231 Difference]: Finished difference. Result has 225 places, 465 transitions, 8710 flow [2024-06-27 22:32:37,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8053, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8710, PETRI_PLACES=225, PETRI_TRANSITIONS=465} [2024-06-27 22:32:37,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-27 22:32:37,303 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 465 transitions, 8710 flow [2024-06-27 22:32:37,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:37,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:37,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:37,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:32:37,303 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:37,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:37,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1832520918, now seen corresponding path program 4 times [2024-06-27 22:32:37,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:37,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774325747] [2024-06-27 22:32:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:37,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:38,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:38,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774325747] [2024-06-27 22:32:38,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774325747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:38,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:38,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:38,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826266729] [2024-06-27 22:32:38,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:38,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:38,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:38,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:38,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:38,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:38,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 465 transitions, 8710 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:38,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:38,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:38,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:39,300 INFO L124 PetriNetUnfolderBase]: 1563/2673 cut-off events. [2024-06-27 22:32:39,300 INFO L125 PetriNetUnfolderBase]: For 58423/58423 co-relation queries the response was YES. [2024-06-27 22:32:39,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21354 conditions, 2673 events. 1563/2673 cut-off events. For 58423/58423 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15562 event pairs, 255 based on Foata normal form. 1/2625 useless extension candidates. Maximal degree in co-relation 21235. Up to 2206 conditions per place. [2024-06-27 22:32:39,330 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 342 selfloop transitions, 142 changer transitions 0/490 dead transitions. [2024-06-27 22:32:39,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 490 transitions, 9892 flow [2024-06-27 22:32:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:39,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 22:32:39,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 22:32:39,336 INFO L175 Difference]: Start difference. First operand has 225 places, 465 transitions, 8710 flow. Second operand 8 states and 141 transitions. [2024-06-27 22:32:39,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 490 transitions, 9892 flow [2024-06-27 22:32:39,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 490 transitions, 9458 flow, removed 95 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:39,685 INFO L231 Difference]: Finished difference. Result has 229 places, 468 transitions, 8725 flow [2024-06-27 22:32:39,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8278, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8725, PETRI_PLACES=229, PETRI_TRANSITIONS=468} [2024-06-27 22:32:39,686 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-27 22:32:39,686 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 468 transitions, 8725 flow [2024-06-27 22:32:39,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:39,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:39,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:39,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:32:39,687 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:39,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:39,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1832520732, now seen corresponding path program 1 times [2024-06-27 22:32:39,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:39,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234662402] [2024-06-27 22:32:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:39,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:40,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:40,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234662402] [2024-06-27 22:32:40,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234662402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:40,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:40,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:40,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168793020] [2024-06-27 22:32:40,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:40,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:40,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:40,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:40,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:40,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:40,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 468 transitions, 8725 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:40,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:40,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:40,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:41,783 INFO L124 PetriNetUnfolderBase]: 1591/2804 cut-off events. [2024-06-27 22:32:41,783 INFO L125 PetriNetUnfolderBase]: For 60489/60489 co-relation queries the response was YES. [2024-06-27 22:32:41,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21872 conditions, 2804 events. 1591/2804 cut-off events. For 60489/60489 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 16783 event pairs, 249 based on Foata normal form. 1/2727 useless extension candidates. Maximal degree in co-relation 21751. Up to 1853 conditions per place. [2024-06-27 22:32:41,812 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 371 selfloop transitions, 144 changer transitions 0/521 dead transitions. [2024-06-27 22:32:41,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 521 transitions, 10331 flow [2024-06-27 22:32:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:32:41,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 22:32:41,814 INFO L175 Difference]: Start difference. First operand has 229 places, 468 transitions, 8725 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:32:41,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 521 transitions, 10331 flow [2024-06-27 22:32:42,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 521 transitions, 10163 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:42,047 INFO L231 Difference]: Finished difference. Result has 236 places, 481 transitions, 9250 flow [2024-06-27 22:32:42,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8557, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9250, PETRI_PLACES=236, PETRI_TRANSITIONS=481} [2024-06-27 22:32:42,049 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-27 22:32:42,049 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 481 transitions, 9250 flow [2024-06-27 22:32:42,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:42,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:42,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:42,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:32:42,050 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:42,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1832341242, now seen corresponding path program 2 times [2024-06-27 22:32:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:42,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286883950] [2024-06-27 22:32:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:42,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:43,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:43,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286883950] [2024-06-27 22:32:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286883950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:43,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:43,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:43,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608028409] [2024-06-27 22:32:43,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:43,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:43,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:43,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:43,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 481 transitions, 9250 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:43,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:43,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:43,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:44,392 INFO L124 PetriNetUnfolderBase]: 1645/2895 cut-off events. [2024-06-27 22:32:44,392 INFO L125 PetriNetUnfolderBase]: For 66786/66786 co-relation queries the response was YES. [2024-06-27 22:32:44,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23387 conditions, 2895 events. 1645/2895 cut-off events. For 66786/66786 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17385 event pairs, 246 based on Foata normal form. 1/2816 useless extension candidates. Maximal degree in co-relation 23262. Up to 1908 conditions per place. [2024-06-27 22:32:44,426 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 386 selfloop transitions, 145 changer transitions 0/537 dead transitions. [2024-06-27 22:32:44,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 537 transitions, 11041 flow [2024-06-27 22:32:44,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:32:44,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 22:32:44,428 INFO L175 Difference]: Start difference. First operand has 236 places, 481 transitions, 9250 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:32:44,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 537 transitions, 11041 flow [2024-06-27 22:32:44,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 537 transitions, 10861 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:44,734 INFO L231 Difference]: Finished difference. Result has 243 places, 498 transitions, 9727 flow [2024-06-27 22:32:44,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9097, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9727, PETRI_PLACES=243, PETRI_TRANSITIONS=498} [2024-06-27 22:32:44,735 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-27 22:32:44,735 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 498 transitions, 9727 flow [2024-06-27 22:32:44,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:44,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:44,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:44,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:32:44,737 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:44,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1832340994, now seen corresponding path program 1 times [2024-06-27 22:32:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:44,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100017805] [2024-06-27 22:32:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:46,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:46,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100017805] [2024-06-27 22:32:46,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100017805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:46,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:46,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:32:46,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417924885] [2024-06-27 22:32:46,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:46,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:32:46,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:46,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:32:46,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:32:46,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:46,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 498 transitions, 9727 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2024-06-27 22:32:46,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:46,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:46,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:47,386 INFO L124 PetriNetUnfolderBase]: 1757/3091 cut-off events. [2024-06-27 22:32:47,387 INFO L125 PetriNetUnfolderBase]: For 78276/78276 co-relation queries the response was YES. [2024-06-27 22:32:47,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24788 conditions, 3091 events. 1757/3091 cut-off events. For 78276/78276 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18775 event pairs, 265 based on Foata normal form. 4/3008 useless extension candidates. Maximal degree in co-relation 24661. Up to 1806 conditions per place. [2024-06-27 22:32:47,548 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 419 selfloop transitions, 123 changer transitions 0/548 dead transitions. [2024-06-27 22:32:47,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 548 transitions, 11261 flow [2024-06-27 22:32:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:32:47,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 22:32:47,549 INFO L175 Difference]: Start difference. First operand has 243 places, 498 transitions, 9727 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:32:47,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 548 transitions, 11261 flow [2024-06-27 22:32:47,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 548 transitions, 11093 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:47,847 INFO L231 Difference]: Finished difference. Result has 248 places, 503 transitions, 9884 flow [2024-06-27 22:32:47,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9565, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9884, PETRI_PLACES=248, PETRI_TRANSITIONS=503} [2024-06-27 22:32:47,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-27 22:32:47,849 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 503 transitions, 9884 flow [2024-06-27 22:32:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2024-06-27 22:32:47,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:47,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:32:47,849 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:47,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 519221370, now seen corresponding path program 3 times [2024-06-27 22:32:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994323646] [2024-06-27 22:32:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:47,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:48,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:48,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994323646] [2024-06-27 22:32:48,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994323646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:48,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:48,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:48,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518492214] [2024-06-27 22:32:48,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:48,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:48,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:48,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:48,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:49,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:49,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 503 transitions, 9884 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:49,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:49,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:49,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:49,957 INFO L124 PetriNetUnfolderBase]: 1755/3094 cut-off events. [2024-06-27 22:32:49,957 INFO L125 PetriNetUnfolderBase]: For 77763/77763 co-relation queries the response was YES. [2024-06-27 22:32:49,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24942 conditions, 3094 events. 1755/3094 cut-off events. For 77763/77763 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18842 event pairs, 267 based on Foata normal form. 1/3005 useless extension candidates. Maximal degree in co-relation 24814. Up to 2078 conditions per place. [2024-06-27 22:32:49,992 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 402 selfloop transitions, 139 changer transitions 0/547 dead transitions. [2024-06-27 22:32:49,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 547 transitions, 11408 flow [2024-06-27 22:32:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:32:49,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:32:49,993 INFO L175 Difference]: Start difference. First operand has 248 places, 503 transitions, 9884 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:32:49,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 547 transitions, 11408 flow [2024-06-27 22:32:50,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 547 transitions, 11271 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:50,326 INFO L231 Difference]: Finished difference. Result has 251 places, 503 transitions, 10039 flow [2024-06-27 22:32:50,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9747, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10039, PETRI_PLACES=251, PETRI_TRANSITIONS=503} [2024-06-27 22:32:50,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-27 22:32:50,327 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 503 transitions, 10039 flow [2024-06-27 22:32:50,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:50,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:50,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:32:50,327 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:50,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1804291786, now seen corresponding path program 2 times [2024-06-27 22:32:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587819019] [2024-06-27 22:32:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:52,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587819019] [2024-06-27 22:32:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587819019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:52,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:52,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:32:52,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386093356] [2024-06-27 22:32:52,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:52,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:32:52,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:52,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:32:52,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:32:52,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:52,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 503 transitions, 10039 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2024-06-27 22:32:52,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:52,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:52,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:53,313 INFO L124 PetriNetUnfolderBase]: 1781/3158 cut-off events. [2024-06-27 22:32:53,313 INFO L125 PetriNetUnfolderBase]: For 81740/81740 co-relation queries the response was YES. [2024-06-27 22:32:53,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25441 conditions, 3158 events. 1781/3158 cut-off events. For 81740/81740 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 19461 event pairs, 279 based on Foata normal form. 2/3062 useless extension candidates. Maximal degree in co-relation 25311. Up to 2504 conditions per place. [2024-06-27 22:32:53,352 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 494 selfloop transitions, 56 changer transitions 0/556 dead transitions. [2024-06-27 22:32:53,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 556 transitions, 11646 flow [2024-06-27 22:32:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:32:53,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:32:53,353 INFO L175 Difference]: Start difference. First operand has 251 places, 503 transitions, 10039 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:32:53,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 556 transitions, 11646 flow [2024-06-27 22:32:53,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 556 transitions, 11293 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 22:32:53,710 INFO L231 Difference]: Finished difference. Result has 251 places, 507 transitions, 9861 flow [2024-06-27 22:32:53,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9686, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9861, PETRI_PLACES=251, PETRI_TRANSITIONS=507} [2024-06-27 22:32:53,711 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-27 22:32:53,711 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 507 transitions, 9861 flow [2024-06-27 22:32:53,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2024-06-27 22:32:53,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:53,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:53,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:32:53,712 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:53,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash -219485360, now seen corresponding path program 3 times [2024-06-27 22:32:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945765335] [2024-06-27 22:32:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:55,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945765335] [2024-06-27 22:32:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945765335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:55,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:55,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:32:55,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397059024] [2024-06-27 22:32:55,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:55,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:32:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:55,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:32:55,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:32:55,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:55,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 507 transitions, 9861 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:55,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:55,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:55,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:56,634 INFO L124 PetriNetUnfolderBase]: 1832/3245 cut-off events. [2024-06-27 22:32:56,635 INFO L125 PetriNetUnfolderBase]: For 83621/83621 co-relation queries the response was YES. [2024-06-27 22:32:56,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25740 conditions, 3245 events. 1832/3245 cut-off events. For 83621/83621 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 20045 event pairs, 290 based on Foata normal form. 2/3146 useless extension candidates. Maximal degree in co-relation 25612. Up to 2687 conditions per place. [2024-06-27 22:32:56,674 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 509 selfloop transitions, 46 changer transitions 0/561 dead transitions. [2024-06-27 22:32:56,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 561 transitions, 11475 flow [2024-06-27 22:32:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:32:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:32:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:32:56,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:32:56,675 INFO L175 Difference]: Start difference. First operand has 251 places, 507 transitions, 9861 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:32:56,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 561 transitions, 11475 flow [2024-06-27 22:32:57,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 561 transitions, 11392 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:57,111 INFO L231 Difference]: Finished difference. Result has 257 places, 514 transitions, 9989 flow [2024-06-27 22:32:57,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9787, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9989, PETRI_PLACES=257, PETRI_TRANSITIONS=514} [2024-06-27 22:32:57,112 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 22:32:57,112 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 514 transitions, 9989 flow [2024-06-27 22:32:57,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:57,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:57,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:57,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:32:57,116 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:57,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:57,117 INFO L85 PathProgramCache]: Analyzing trace with hash 407539670, now seen corresponding path program 4 times [2024-06-27 22:32:57,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:57,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145254660] [2024-06-27 22:32:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:57,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:58,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:58,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:58,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145254660] [2024-06-27 22:32:58,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145254660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:58,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:58,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:32:58,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807642640] [2024-06-27 22:32:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:58,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:32:58,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:58,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:32:58,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:32:58,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:32:58,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 514 transitions, 9989 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2024-06-27 22:32:58,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:58,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:32:58,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:59,529 INFO L124 PetriNetUnfolderBase]: 1858/3288 cut-off events. [2024-06-27 22:32:59,529 INFO L125 PetriNetUnfolderBase]: For 85300/85300 co-relation queries the response was YES. [2024-06-27 22:32:59,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26221 conditions, 3288 events. 1858/3288 cut-off events. For 85300/85300 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20407 event pairs, 294 based on Foata normal form. 2/3188 useless extension candidates. Maximal degree in co-relation 26090. Up to 2833 conditions per place. [2024-06-27 22:32:59,561 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 508 selfloop transitions, 36 changer transitions 0/550 dead transitions. [2024-06-27 22:32:59,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 550 transitions, 11285 flow [2024-06-27 22:32:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 22:32:59,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 22:32:59,564 INFO L175 Difference]: Start difference. First operand has 257 places, 514 transitions, 9989 flow. Second operand 9 states and 155 transitions. [2024-06-27 22:32:59,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 550 transitions, 11285 flow [2024-06-27 22:32:59,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 550 transitions, 11219 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:59,911 INFO L231 Difference]: Finished difference. Result has 262 places, 518 transitions, 10072 flow [2024-06-27 22:32:59,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9925, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10072, PETRI_PLACES=262, PETRI_TRANSITIONS=518} [2024-06-27 22:32:59,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-27 22:32:59,915 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 518 transitions, 10072 flow [2024-06-27 22:32:59,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2024-06-27 22:32:59,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:59,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:59,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:32:59,917 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:59,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash -219254968, now seen corresponding path program 4 times [2024-06-27 22:32:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:59,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908351325] [2024-06-27 22:32:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:59,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:01,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:01,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908351325] [2024-06-27 22:33:01,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908351325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:01,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:01,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:01,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396673278] [2024-06-27 22:33:01,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:01,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:01,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:01,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:01,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 518 transitions, 10072 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:01,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:01,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:01,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:02,093 INFO L124 PetriNetUnfolderBase]: 1880/3314 cut-off events. [2024-06-27 22:33:02,093 INFO L125 PetriNetUnfolderBase]: For 87242/87242 co-relation queries the response was YES. [2024-06-27 22:33:02,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26633 conditions, 3314 events. 1880/3314 cut-off events. For 87242/87242 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20486 event pairs, 297 based on Foata normal form. 1/3216 useless extension candidates. Maximal degree in co-relation 26500. Up to 2884 conditions per place. [2024-06-27 22:33:02,131 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 515 selfloop transitions, 35 changer transitions 0/556 dead transitions. [2024-06-27 22:33:02,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 556 transitions, 11484 flow [2024-06-27 22:33:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 22:33:02,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2024-06-27 22:33:02,133 INFO L175 Difference]: Start difference. First operand has 262 places, 518 transitions, 10072 flow. Second operand 9 states and 145 transitions. [2024-06-27 22:33:02,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 556 transitions, 11484 flow [2024-06-27 22:33:02,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 556 transitions, 11368 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:02,484 INFO L231 Difference]: Finished difference. Result has 265 places, 524 transitions, 10143 flow [2024-06-27 22:33:02,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9956, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10143, PETRI_PLACES=265, PETRI_TRANSITIONS=524} [2024-06-27 22:33:02,485 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-27 22:33:02,485 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 524 transitions, 10143 flow [2024-06-27 22:33:02,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:02,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:02,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:02,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:33:02,485 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:02,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:02,486 INFO L85 PathProgramCache]: Analyzing trace with hash 351912092, now seen corresponding path program 5 times [2024-06-27 22:33:02,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:02,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767481317] [2024-06-27 22:33:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:02,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767481317] [2024-06-27 22:33:03,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767481317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:03,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:03,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:03,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488283412] [2024-06-27 22:33:03,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:03,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:04,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:04,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 524 transitions, 10143 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:04,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:04,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:04,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:05,086 INFO L124 PetriNetUnfolderBase]: 1886/3345 cut-off events. [2024-06-27 22:33:05,086 INFO L125 PetriNetUnfolderBase]: For 87888/87888 co-relation queries the response was YES. [2024-06-27 22:33:05,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26618 conditions, 3345 events. 1886/3345 cut-off events. For 87888/87888 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 20869 event pairs, 299 based on Foata normal form. 2/3241 useless extension candidates. Maximal degree in co-relation 26485. Up to 2818 conditions per place. [2024-06-27 22:33:05,127 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 518 selfloop transitions, 41 changer transitions 0/565 dead transitions. [2024-06-27 22:33:05,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 565 transitions, 11536 flow [2024-06-27 22:33:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:33:05,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:33:05,129 INFO L175 Difference]: Start difference. First operand has 265 places, 524 transitions, 10143 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:33:05,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 565 transitions, 11536 flow [2024-06-27 22:33:05,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 565 transitions, 11427 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:05,476 INFO L231 Difference]: Finished difference. Result has 268 places, 526 transitions, 10155 flow [2024-06-27 22:33:05,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10046, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10155, PETRI_PLACES=268, PETRI_TRANSITIONS=526} [2024-06-27 22:33:05,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-27 22:33:05,477 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 526 transitions, 10155 flow [2024-06-27 22:33:05,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:05,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:05,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:05,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:33:05,477 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:05,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1687205068, now seen corresponding path program 5 times [2024-06-27 22:33:05,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:05,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702763] [2024-06-27 22:33:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:05,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:06,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702763] [2024-06-27 22:33:06,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:06,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:06,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:06,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137166089] [2024-06-27 22:33:06,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:06,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:06,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:06,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:06,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:06,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:06,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 526 transitions, 10155 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:06,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:06,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:06,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:08,025 INFO L124 PetriNetUnfolderBase]: 1922/3396 cut-off events. [2024-06-27 22:33:08,025 INFO L125 PetriNetUnfolderBase]: For 89404/89404 co-relation queries the response was YES. [2024-06-27 22:33:08,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27088 conditions, 3396 events. 1922/3396 cut-off events. For 89404/89404 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 21143 event pairs, 301 based on Foata normal form. 1/3293 useless extension candidates. Maximal degree in co-relation 26954. Up to 2841 conditions per place. [2024-06-27 22:33:08,062 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 510 selfloop transitions, 63 changer transitions 0/579 dead transitions. [2024-06-27 22:33:08,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 579 transitions, 11956 flow [2024-06-27 22:33:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:33:08,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 22:33:08,064 INFO L175 Difference]: Start difference. First operand has 268 places, 526 transitions, 10155 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:33:08,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 579 transitions, 11956 flow [2024-06-27 22:33:08,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 579 transitions, 11868 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:33:08,420 INFO L231 Difference]: Finished difference. Result has 270 places, 539 transitions, 10478 flow [2024-06-27 22:33:08,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10067, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10478, PETRI_PLACES=270, PETRI_TRANSITIONS=539} [2024-06-27 22:33:08,421 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-27 22:33:08,421 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 539 transitions, 10478 flow [2024-06-27 22:33:08,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:08,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:08,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:08,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:33:08,422 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:08,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:08,422 INFO L85 PathProgramCache]: Analyzing trace with hash -221276056, now seen corresponding path program 6 times [2024-06-27 22:33:08,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:08,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380104078] [2024-06-27 22:33:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:08,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:09,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380104078] [2024-06-27 22:33:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380104078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:09,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:09,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356601097] [2024-06-27 22:33:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:09,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:09,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:09,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:09,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 539 transitions, 10478 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:09,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:09,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:09,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:10,570 INFO L124 PetriNetUnfolderBase]: 1920/3390 cut-off events. [2024-06-27 22:33:10,570 INFO L125 PetriNetUnfolderBase]: For 90931/90931 co-relation queries the response was YES. [2024-06-27 22:33:10,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27236 conditions, 3390 events. 1920/3390 cut-off events. For 90931/90931 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 21134 event pairs, 295 based on Foata normal form. 1/3288 useless extension candidates. Maximal degree in co-relation 27100. Up to 2839 conditions per place. [2024-06-27 22:33:10,613 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 509 selfloop transitions, 64 changer transitions 0/579 dead transitions. [2024-06-27 22:33:10,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 579 transitions, 11963 flow [2024-06-27 22:33:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:33:10,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:33:10,614 INFO L175 Difference]: Start difference. First operand has 270 places, 539 transitions, 10478 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:33:10,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 579 transitions, 11963 flow [2024-06-27 22:33:11,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 579 transitions, 11809 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:11,107 INFO L231 Difference]: Finished difference. Result has 273 places, 539 transitions, 10465 flow [2024-06-27 22:33:11,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10324, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10465, PETRI_PLACES=273, PETRI_TRANSITIONS=539} [2024-06-27 22:33:11,108 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-27 22:33:11,108 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 539 transitions, 10465 flow [2024-06-27 22:33:11,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:11,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:11,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:11,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:33:11,109 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:11,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:11,109 INFO L85 PathProgramCache]: Analyzing trace with hash 104763202, now seen corresponding path program 4 times [2024-06-27 22:33:11,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:11,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730107060] [2024-06-27 22:33:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:11,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:12,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:12,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730107060] [2024-06-27 22:33:12,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730107060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:12,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:12,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:12,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402937165] [2024-06-27 22:33:12,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:12,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:12,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:12,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:12,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:12,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:12,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 539 transitions, 10465 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) [2024-06-27 22:33:12,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:12,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:12,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:13,404 INFO L124 PetriNetUnfolderBase]: 1851/3328 cut-off events. [2024-06-27 22:33:13,404 INFO L125 PetriNetUnfolderBase]: For 96600/96612 co-relation queries the response was YES. [2024-06-27 22:33:13,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26883 conditions, 3328 events. 1851/3328 cut-off events. For 96600/96612 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21284 event pairs, 214 based on Foata normal form. 4/3200 useless extension candidates. Maximal degree in co-relation 26746. Up to 2095 conditions per place. [2024-06-27 22:33:13,445 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 374 selfloop transitions, 189 changer transitions 0/574 dead transitions. [2024-06-27 22:33:13,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 574 transitions, 12091 flow [2024-06-27 22:33:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:33:13,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 22:33:13,447 INFO L175 Difference]: Start difference. First operand has 273 places, 539 transitions, 10465 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:33:13,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 574 transitions, 12091 flow [2024-06-27 22:33:14,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 574 transitions, 11965 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:14,041 INFO L231 Difference]: Finished difference. Result has 275 places, 546 transitions, 10901 flow [2024-06-27 22:33:14,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10339, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10901, PETRI_PLACES=275, PETRI_TRANSITIONS=546} [2024-06-27 22:33:14,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-27 22:33:14,042 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 546 transitions, 10901 flow [2024-06-27 22:33:14,042 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) [2024-06-27 22:33:14,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:14,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:14,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:33:14,043 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:14,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash 104823776, now seen corresponding path program 5 times [2024-06-27 22:33:14,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:14,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563890445] [2024-06-27 22:33:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:14,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:15,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563890445] [2024-06-27 22:33:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563890445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:15,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:15,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:15,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282055561] [2024-06-27 22:33:15,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:15,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:15,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:15,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:15,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:15,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:15,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 546 transitions, 10901 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) [2024-06-27 22:33:15,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:15,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:15,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:16,498 INFO L124 PetriNetUnfolderBase]: 1868/3355 cut-off events. [2024-06-27 22:33:16,498 INFO L125 PetriNetUnfolderBase]: For 101351/101363 co-relation queries the response was YES. [2024-06-27 22:33:16,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27780 conditions, 3355 events. 1868/3355 cut-off events. For 101351/101363 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 21473 event pairs, 269 based on Foata normal form. 3/3225 useless extension candidates. Maximal degree in co-relation 27642. Up to 2299 conditions per place. [2024-06-27 22:33:16,541 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 358 selfloop transitions, 210 changer transitions 0/579 dead transitions. [2024-06-27 22:33:16,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 579 transitions, 12460 flow [2024-06-27 22:33:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 22:33:16,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:33:16,543 INFO L175 Difference]: Start difference. First operand has 275 places, 546 transitions, 10901 flow. Second operand 8 states and 144 transitions. [2024-06-27 22:33:16,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 579 transitions, 12460 flow [2024-06-27 22:33:16,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 579 transitions, 12177 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:16,953 INFO L231 Difference]: Finished difference. Result has 278 places, 553 transitions, 11189 flow [2024-06-27 22:33:16,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10620, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11189, PETRI_PLACES=278, PETRI_TRANSITIONS=553} [2024-06-27 22:33:16,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 237 predicate places. [2024-06-27 22:33:16,969 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 553 transitions, 11189 flow [2024-06-27 22:33:16,969 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) [2024-06-27 22:33:16,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:16,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:16,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:33:16,969 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:16,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash 495383662, now seen corresponding path program 5 times [2024-06-27 22:33:16,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883135985] [2024-06-27 22:33:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:16,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:18,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:18,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883135985] [2024-06-27 22:33:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883135985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:18,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965540797] [2024-06-27 22:33:18,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:18,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:18,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:18,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:18,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 553 transitions, 11189 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) [2024-06-27 22:33:18,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:18,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:18,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:19,137 INFO L124 PetriNetUnfolderBase]: 1882/3379 cut-off events. [2024-06-27 22:33:19,137 INFO L125 PetriNetUnfolderBase]: For 101101/101113 co-relation queries the response was YES. [2024-06-27 22:33:19,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28148 conditions, 3379 events. 1882/3379 cut-off events. For 101101/101113 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21655 event pairs, 266 based on Foata normal form. 4/3250 useless extension candidates. Maximal degree in co-relation 28009. Up to 2373 conditions per place. [2024-06-27 22:33:19,176 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 394 selfloop transitions, 177 changer transitions 0/582 dead transitions. [2024-06-27 22:33:19,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 582 transitions, 12671 flow [2024-06-27 22:33:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 22:33:19,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:33:19,178 INFO L175 Difference]: Start difference. First operand has 278 places, 553 transitions, 11189 flow. Second operand 8 states and 144 transitions. [2024-06-27 22:33:19,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 582 transitions, 12671 flow [2024-06-27 22:33:19,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 582 transitions, 12316 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:19,573 INFO L231 Difference]: Finished difference. Result has 281 places, 555 transitions, 11239 flow [2024-06-27 22:33:19,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10834, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11239, PETRI_PLACES=281, PETRI_TRANSITIONS=555} [2024-06-27 22:33:19,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-27 22:33:19,574 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 555 transitions, 11239 flow [2024-06-27 22:33:19,574 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) [2024-06-27 22:33:19,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:19,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:19,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:33:19,574 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:19,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash 508904932, now seen corresponding path program 6 times [2024-06-27 22:33:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:19,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207991538] [2024-06-27 22:33:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:19,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:20,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:20,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207991538] [2024-06-27 22:33:20,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207991538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:20,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:20,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:20,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758116414] [2024-06-27 22:33:20,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:20,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:20,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:20,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:20,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:20,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:20,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 555 transitions, 11239 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) [2024-06-27 22:33:20,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:20,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:20,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:21,740 INFO L124 PetriNetUnfolderBase]: 1892/3394 cut-off events. [2024-06-27 22:33:21,740 INFO L125 PetriNetUnfolderBase]: For 104695/104707 co-relation queries the response was YES. [2024-06-27 22:33:21,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28191 conditions, 3394 events. 1892/3394 cut-off events. For 104695/104707 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21748 event pairs, 263 based on Foata normal form. 6/3270 useless extension candidates. Maximal degree in co-relation 28051. Up to 2514 conditions per place. [2024-06-27 22:33:21,785 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 411 selfloop transitions, 157 changer transitions 0/579 dead transitions. [2024-06-27 22:33:21,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 579 transitions, 12561 flow [2024-06-27 22:33:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 22:33:21,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 22:33:21,787 INFO L175 Difference]: Start difference. First operand has 281 places, 555 transitions, 11239 flow. Second operand 8 states and 142 transitions. [2024-06-27 22:33:21,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 579 transitions, 12561 flow [2024-06-27 22:33:22,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 579 transitions, 12206 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:22,244 INFO L231 Difference]: Finished difference. Result has 283 places, 557 transitions, 11246 flow [2024-06-27 22:33:22,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10884, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11246, PETRI_PLACES=283, PETRI_TRANSITIONS=557} [2024-06-27 22:33:22,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-27 22:33:22,246 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 557 transitions, 11246 flow [2024-06-27 22:33:22,246 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) [2024-06-27 22:33:22,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:22,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:22,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:33:22,247 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:22,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:22,247 INFO L85 PathProgramCache]: Analyzing trace with hash 495499106, now seen corresponding path program 6 times [2024-06-27 22:33:22,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:22,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353445382] [2024-06-27 22:33:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:22,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:23,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353445382] [2024-06-27 22:33:23,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353445382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:23,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:23,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:23,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791919236] [2024-06-27 22:33:23,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:23,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:23,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:23,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 557 transitions, 11246 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) [2024-06-27 22:33:23,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:23,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:23,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:24,392 INFO L124 PetriNetUnfolderBase]: 1912/3418 cut-off events. [2024-06-27 22:33:24,393 INFO L125 PetriNetUnfolderBase]: For 103382/103394 co-relation queries the response was YES. [2024-06-27 22:33:24,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28415 conditions, 3418 events. 1912/3418 cut-off events. For 103382/103394 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 21844 event pairs, 269 based on Foata normal form. 3/3294 useless extension candidates. Maximal degree in co-relation 28274. Up to 2583 conditions per place. [2024-06-27 22:33:24,433 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 411 selfloop transitions, 165 changer transitions 0/587 dead transitions. [2024-06-27 22:33:24,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 587 transitions, 12716 flow [2024-06-27 22:33:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 22:33:24,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 22:33:24,434 INFO L175 Difference]: Start difference. First operand has 283 places, 557 transitions, 11246 flow. Second operand 8 states and 141 transitions. [2024-06-27 22:33:24,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 587 transitions, 12716 flow [2024-06-27 22:33:24,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 587 transitions, 12396 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:24,886 INFO L231 Difference]: Finished difference. Result has 285 places, 564 transitions, 11409 flow [2024-06-27 22:33:24,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10926, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11409, PETRI_PLACES=285, PETRI_TRANSITIONS=564} [2024-06-27 22:33:24,887 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-27 22:33:24,887 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 564 transitions, 11409 flow [2024-06-27 22:33:24,887 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) [2024-06-27 22:33:24,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:24,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:24,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:33:24,888 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:24,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:24,888 INFO L85 PathProgramCache]: Analyzing trace with hash -610082322, now seen corresponding path program 7 times [2024-06-27 22:33:24,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:24,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500746236] [2024-06-27 22:33:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:24,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:26,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:26,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500746236] [2024-06-27 22:33:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500746236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:26,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:26,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:26,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531644682] [2024-06-27 22:33:26,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:26,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:26,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:26,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:26,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:26,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:26,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 564 transitions, 11409 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) [2024-06-27 22:33:26,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:26,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:26,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:27,071 INFO L124 PetriNetUnfolderBase]: 1901/3396 cut-off events. [2024-06-27 22:33:27,072 INFO L125 PetriNetUnfolderBase]: For 102929/102944 co-relation queries the response was YES. [2024-06-27 22:33:27,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28301 conditions, 3396 events. 1901/3396 cut-off events. For 102929/102944 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 21645 event pairs, 267 based on Foata normal form. 6/3276 useless extension candidates. Maximal degree in co-relation 28159. Up to 2498 conditions per place. [2024-06-27 22:33:27,117 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 386 selfloop transitions, 198 changer transitions 0/595 dead transitions. [2024-06-27 22:33:27,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 595 transitions, 12943 flow [2024-06-27 22:33:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:27,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:33:27,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 22:33:27,119 INFO L175 Difference]: Start difference. First operand has 285 places, 564 transitions, 11409 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:33:27,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 595 transitions, 12943 flow [2024-06-27 22:33:27,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 595 transitions, 12576 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:27,561 INFO L231 Difference]: Finished difference. Result has 287 places, 566 transitions, 11586 flow [2024-06-27 22:33:27,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11046, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11586, PETRI_PLACES=287, PETRI_TRANSITIONS=566} [2024-06-27 22:33:27,561 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-27 22:33:27,562 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 566 transitions, 11586 flow [2024-06-27 22:33:27,562 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) [2024-06-27 22:33:27,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:27,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:27,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:33:27,562 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:27,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash -618835048, now seen corresponding path program 6 times [2024-06-27 22:33:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:27,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850243140] [2024-06-27 22:33:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:27,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:29,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850243140] [2024-06-27 22:33:29,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850243140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:29,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:29,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:29,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229810856] [2024-06-27 22:33:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:29,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:29,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:29,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:29,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:29,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 566 transitions, 11586 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2024-06-27 22:33:29,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:29,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:29,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:30,743 INFO L124 PetriNetUnfolderBase]: 2365/4225 cut-off events. [2024-06-27 22:33:30,744 INFO L125 PetriNetUnfolderBase]: For 112742/112742 co-relation queries the response was YES. [2024-06-27 22:33:30,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33655 conditions, 4225 events. 2365/4225 cut-off events. For 112742/112742 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27982 event pairs, 260 based on Foata normal form. 4/4087 useless extension candidates. Maximal degree in co-relation 33512. Up to 1922 conditions per place. [2024-06-27 22:33:30,791 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 531 selfloop transitions, 202 changer transitions 0/739 dead transitions. [2024-06-27 22:33:30,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 739 transitions, 15707 flow [2024-06-27 22:33:30,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:33:30,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216216216216216 [2024-06-27 22:33:30,793 INFO L175 Difference]: Start difference. First operand has 287 places, 566 transitions, 11586 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:33:30,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 739 transitions, 15707 flow [2024-06-27 22:33:31,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 739 transitions, 15264 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:31,282 INFO L231 Difference]: Finished difference. Result has 297 places, 629 transitions, 12963 flow [2024-06-27 22:33:31,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11178, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12963, PETRI_PLACES=297, PETRI_TRANSITIONS=629} [2024-06-27 22:33:31,283 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-27 22:33:31,283 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 629 transitions, 12963 flow [2024-06-27 22:33:31,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2024-06-27 22:33:31,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:31,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:31,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:33:31,283 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:31,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:31,284 INFO L85 PathProgramCache]: Analyzing trace with hash -604036206, now seen corresponding path program 7 times [2024-06-27 22:33:31,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:31,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748227682] [2024-06-27 22:33:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:32,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:32,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748227682] [2024-06-27 22:33:32,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748227682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:32,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:32,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301584138] [2024-06-27 22:33:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:32,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:32,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:32,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:32,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:32,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 629 transitions, 12963 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:32,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:32,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:32,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:34,006 INFO L124 PetriNetUnfolderBase]: 2397/4292 cut-off events. [2024-06-27 22:33:34,007 INFO L125 PetriNetUnfolderBase]: For 117466/117466 co-relation queries the response was YES. [2024-06-27 22:33:34,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35228 conditions, 4292 events. 2397/4292 cut-off events. For 117466/117466 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28614 event pairs, 253 based on Foata normal form. 1/4145 useless extension candidates. Maximal degree in co-relation 35079. Up to 3183 conditions per place. [2024-06-27 22:33:34,051 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 509 selfloop transitions, 182 changer transitions 0/697 dead transitions. [2024-06-27 22:33:34,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 697 transitions, 15210 flow [2024-06-27 22:33:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:33:34,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:33:34,061 INFO L175 Difference]: Start difference. First operand has 297 places, 629 transitions, 12963 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:33:34,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 697 transitions, 15210 flow [2024-06-27 22:33:34,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 697 transitions, 14972 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:34,626 INFO L231 Difference]: Finished difference. Result has 304 places, 644 transitions, 13343 flow [2024-06-27 22:33:34,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12725, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13343, PETRI_PLACES=304, PETRI_TRANSITIONS=644} [2024-06-27 22:33:34,627 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 22:33:34,627 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 644 transitions, 13343 flow [2024-06-27 22:33:34,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:34,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:34,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:34,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:33:34,628 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:34,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash -619014786, now seen corresponding path program 8 times [2024-06-27 22:33:34,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:34,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18930918] [2024-06-27 22:33:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:34,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:35,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:35,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18930918] [2024-06-27 22:33:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18930918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:35,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:35,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:35,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313818485] [2024-06-27 22:33:35,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:35,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:35,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:35,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:35,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 644 transitions, 13343 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:35,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:35,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:35,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:37,368 INFO L124 PetriNetUnfolderBase]: 2499/4463 cut-off events. [2024-06-27 22:33:37,368 INFO L125 PetriNetUnfolderBase]: For 120724/120724 co-relation queries the response was YES. [2024-06-27 22:33:37,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37005 conditions, 4463 events. 2499/4463 cut-off events. For 120724/120724 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 29925 event pairs, 267 based on Foata normal form. 1/4312 useless extension candidates. Maximal degree in co-relation 36853. Up to 2805 conditions per place. [2024-06-27 22:33:37,417 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 496 selfloop transitions, 291 changer transitions 0/793 dead transitions. [2024-06-27 22:33:37,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 793 transitions, 17349 flow [2024-06-27 22:33:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:33:37,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 22:33:37,418 INFO L175 Difference]: Start difference. First operand has 304 places, 644 transitions, 13343 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:33:37,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 793 transitions, 17349 flow [2024-06-27 22:33:37,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 793 transitions, 17025 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:38,003 INFO L231 Difference]: Finished difference. Result has 312 places, 723 transitions, 15463 flow [2024-06-27 22:33:38,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13062, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15463, PETRI_PLACES=312, PETRI_TRANSITIONS=723} [2024-06-27 22:33:38,004 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 271 predicate places. [2024-06-27 22:33:38,004 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 723 transitions, 15463 flow [2024-06-27 22:33:38,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:38,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:38,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:38,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:33:38,005 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:38,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash -619014972, now seen corresponding path program 8 times [2024-06-27 22:33:38,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825015387] [2024-06-27 22:33:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:38,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:39,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:39,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825015387] [2024-06-27 22:33:39,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825015387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:39,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:39,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:39,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071627077] [2024-06-27 22:33:39,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:39,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:39,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:39,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:39,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:39,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 723 transitions, 15463 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:39,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:39,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:39,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:40,328 INFO L124 PetriNetUnfolderBase]: 2388/4334 cut-off events. [2024-06-27 22:33:40,328 INFO L125 PetriNetUnfolderBase]: For 126975/126987 co-relation queries the response was YES. [2024-06-27 22:33:40,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36677 conditions, 4334 events. 2388/4334 cut-off events. For 126975/126987 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 29773 event pairs, 310 based on Foata normal form. 4/4156 useless extension candidates. Maximal degree in co-relation 36521. Up to 3254 conditions per place. [2024-06-27 22:33:40,386 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 527 selfloop transitions, 207 changer transitions 0/746 dead transitions. [2024-06-27 22:33:40,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 746 transitions, 17108 flow [2024-06-27 22:33:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:40,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 22:33:40,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:33:40,387 INFO L175 Difference]: Start difference. First operand has 312 places, 723 transitions, 15463 flow. Second operand 7 states and 133 transitions. [2024-06-27 22:33:40,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 746 transitions, 17108 flow [2024-06-27 22:33:41,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 746 transitions, 17028 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-27 22:33:41,033 INFO L231 Difference]: Finished difference. Result has 317 places, 723 transitions, 15868 flow [2024-06-27 22:33:41,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15383, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15868, PETRI_PLACES=317, PETRI_TRANSITIONS=723} [2024-06-27 22:33:41,034 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-06-27 22:33:41,034 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 723 transitions, 15868 flow [2024-06-27 22:33:41,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:41,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:41,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:33:41,035 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:41,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash -618841806, now seen corresponding path program 9 times [2024-06-27 22:33:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:41,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728075350] [2024-06-27 22:33:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:42,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728075350] [2024-06-27 22:33:42,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728075350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:42,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:42,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875252327] [2024-06-27 22:33:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:42,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:42,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:42,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:42,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:42,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:42,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 723 transitions, 15868 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:42,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:42,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:42,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:43,750 INFO L124 PetriNetUnfolderBase]: 2555/4617 cut-off events. [2024-06-27 22:33:43,750 INFO L125 PetriNetUnfolderBase]: For 135167/135167 co-relation queries the response was YES. [2024-06-27 22:33:43,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39411 conditions, 4617 events. 2555/4617 cut-off events. For 135167/135167 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 31529 event pairs, 269 based on Foata normal form. 1/4445 useless extension candidates. Maximal degree in co-relation 39253. Up to 2845 conditions per place. [2024-06-27 22:33:43,869 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 524 selfloop transitions, 290 changer transitions 0/820 dead transitions. [2024-06-27 22:33:43,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 820 transitions, 18981 flow [2024-06-27 22:33:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:43,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:33:43,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 22:33:43,871 INFO L175 Difference]: Start difference. First operand has 317 places, 723 transitions, 15868 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:33:43,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 820 transitions, 18981 flow [2024-06-27 22:33:44,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 820 transitions, 18466 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:44,642 INFO L231 Difference]: Finished difference. Result has 322 places, 754 transitions, 16920 flow [2024-06-27 22:33:44,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15413, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16920, PETRI_PLACES=322, PETRI_TRANSITIONS=754} [2024-06-27 22:33:44,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-27 22:33:44,644 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 754 transitions, 16920 flow [2024-06-27 22:33:44,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:44,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:44,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:44,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:33:44,644 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:44,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:44,645 INFO L85 PathProgramCache]: Analyzing trace with hash 352249465, now seen corresponding path program 1 times [2024-06-27 22:33:44,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:44,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718272743] [2024-06-27 22:33:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:44,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:46,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:46,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718272743] [2024-06-27 22:33:46,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718272743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:46,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:46,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:46,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598929928] [2024-06-27 22:33:46,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:46,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:46,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:46,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:46,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 754 transitions, 16920 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:46,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:46,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:46,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:48,061 INFO L124 PetriNetUnfolderBase]: 2552/4630 cut-off events. [2024-06-27 22:33:48,061 INFO L125 PetriNetUnfolderBase]: For 136773/136773 co-relation queries the response was YES. [2024-06-27 22:33:48,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40122 conditions, 4630 events. 2552/4630 cut-off events. For 136773/136773 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 31798 event pairs, 423 based on Foata normal form. 2/4453 useless extension candidates. Maximal degree in co-relation 39961. Up to 3924 conditions per place. [2024-06-27 22:33:48,119 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 749 selfloop transitions, 32 changer transitions 0/787 dead transitions. [2024-06-27 22:33:48,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 787 transitions, 18672 flow [2024-06-27 22:33:48,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:48,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 22:33:48,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 22:33:48,121 INFO L175 Difference]: Start difference. First operand has 322 places, 754 transitions, 16920 flow. Second operand 10 states and 158 transitions. [2024-06-27 22:33:48,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 787 transitions, 18672 flow [2024-06-27 22:33:48,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 787 transitions, 18316 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:48,810 INFO L231 Difference]: Finished difference. Result has 328 places, 754 transitions, 16632 flow [2024-06-27 22:33:48,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16564, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16632, PETRI_PLACES=328, PETRI_TRANSITIONS=754} [2024-06-27 22:33:48,811 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-06-27 22:33:48,811 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 754 transitions, 16632 flow [2024-06-27 22:33:48,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:48,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:48,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:48,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:33:48,812 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:48,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1531717441, now seen corresponding path program 1 times [2024-06-27 22:33:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:48,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116117543] [2024-06-27 22:33:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:48,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:48,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116117543] [2024-06-27 22:33:48,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116117543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:48,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:48,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:33:48,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741202757] [2024-06-27 22:33:48,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:48,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:33:48,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:48,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:33:48,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:33:48,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 22:33:48,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 754 transitions, 16632 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:48,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:48,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 22:33:48,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:50,611 INFO L124 PetriNetUnfolderBase]: 3363/5821 cut-off events. [2024-06-27 22:33:50,611 INFO L125 PetriNetUnfolderBase]: For 146790/146909 co-relation queries the response was YES. [2024-06-27 22:33:50,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48967 conditions, 5821 events. 3363/5821 cut-off events. For 146790/146909 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 39602 event pairs, 460 based on Foata normal form. 94/5667 useless extension candidates. Maximal degree in co-relation 48806. Up to 3497 conditions per place. [2024-06-27 22:33:50,694 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 783 selfloop transitions, 19 changer transitions 284/1232 dead transitions. [2024-06-27 22:33:50,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 1232 transitions, 27556 flow [2024-06-27 22:33:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 22:33:50,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2024-06-27 22:33:50,696 INFO L175 Difference]: Start difference. First operand has 328 places, 754 transitions, 16632 flow. Second operand 8 states and 174 transitions. [2024-06-27 22:33:50,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 1232 transitions, 27556 flow [2024-06-27 22:33:51,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1232 transitions, 27347 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 22:33:51,508 INFO L231 Difference]: Finished difference. Result has 331 places, 739 transitions, 16321 flow [2024-06-27 22:33:51,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16538, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16321, PETRI_PLACES=331, PETRI_TRANSITIONS=739} [2024-06-27 22:33:51,509 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-27 22:33:51,509 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 739 transitions, 16321 flow [2024-06-27 22:33:51,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:51,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:51,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:51,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:33:51,510 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:51,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:51,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1950209273, now seen corresponding path program 1 times [2024-06-27 22:33:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:51,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320107849] [2024-06-27 22:33:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:51,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:53,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:53,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320107849] [2024-06-27 22:33:53,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320107849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:53,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:53,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:53,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224958078] [2024-06-27 22:33:53,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:53,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:53,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:53,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:53,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:53,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:53,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 739 transitions, 16321 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) [2024-06-27 22:33:53,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:53,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:53,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:54,645 INFO L124 PetriNetUnfolderBase]: 2541/4604 cut-off events. [2024-06-27 22:33:54,645 INFO L125 PetriNetUnfolderBase]: For 140189/140189 co-relation queries the response was YES. [2024-06-27 22:33:54,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40171 conditions, 4604 events. 2541/4604 cut-off events. For 140189/140189 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 31645 event pairs, 393 based on Foata normal form. 2/4603 useless extension candidates. Maximal degree in co-relation 40007. Up to 3380 conditions per place. [2024-06-27 22:33:54,715 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 606 selfloop transitions, 164 changer transitions 0/776 dead transitions. [2024-06-27 22:33:54,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 776 transitions, 18293 flow [2024-06-27 22:33:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:33:54,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 22:33:54,716 INFO L175 Difference]: Start difference. First operand has 331 places, 739 transitions, 16321 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:33:54,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 776 transitions, 18293 flow [2024-06-27 22:33:55,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 776 transitions, 17783 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 22:33:55,482 INFO L231 Difference]: Finished difference. Result has 326 places, 743 transitions, 16232 flow [2024-06-27 22:33:55,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15811, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16232, PETRI_PLACES=326, PETRI_TRANSITIONS=743} [2024-06-27 22:33:55,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-27 22:33:55,483 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 743 transitions, 16232 flow [2024-06-27 22:33:55,483 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) [2024-06-27 22:33:55,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:55,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:55,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:33:55,484 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:55,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash -455268088, now seen corresponding path program 1 times [2024-06-27 22:33:55,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:55,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355943133] [2024-06-27 22:33:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:55,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:57,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:57,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355943133] [2024-06-27 22:33:57,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355943133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:57,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:57,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:57,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404803970] [2024-06-27 22:33:57,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:57,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:57,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:57,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:57,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:57,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:33:57,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 743 transitions, 16232 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) [2024-06-27 22:33:57,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:57,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:33:57,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:59,065 INFO L124 PetriNetUnfolderBase]: 2594/4712 cut-off events. [2024-06-27 22:33:59,066 INFO L125 PetriNetUnfolderBase]: For 138937/138937 co-relation queries the response was YES. [2024-06-27 22:33:59,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40302 conditions, 4712 events. 2594/4712 cut-off events. For 138937/138937 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 32482 event pairs, 379 based on Foata normal form. 1/4530 useless extension candidates. Maximal degree in co-relation 40141. Up to 3526 conditions per place. [2024-06-27 22:33:59,132 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 639 selfloop transitions, 169 changer transitions 0/814 dead transitions. [2024-06-27 22:33:59,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 814 transitions, 18839 flow [2024-06-27 22:33:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:33:59,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:33:59,133 INFO L175 Difference]: Start difference. First operand has 326 places, 743 transitions, 16232 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:33:59,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 814 transitions, 18839 flow [2024-06-27 22:33:59,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 814 transitions, 18600 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:59,898 INFO L231 Difference]: Finished difference. Result has 334 places, 764 transitions, 16889 flow [2024-06-27 22:33:59,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15997, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16889, PETRI_PLACES=334, PETRI_TRANSITIONS=764} [2024-06-27 22:33:59,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-27 22:33:59,899 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 764 transitions, 16889 flow [2024-06-27 22:33:59,899 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) [2024-06-27 22:33:59,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:59,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:59,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:33:59,900 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:59,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash -455271963, now seen corresponding path program 2 times [2024-06-27 22:33:59,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:59,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323871205] [2024-06-27 22:33:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:59,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:01,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:01,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323871205] [2024-06-27 22:34:01,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323871205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:01,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:01,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795537849] [2024-06-27 22:34:01,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:01,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:01,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:01,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 764 transitions, 16889 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) [2024-06-27 22:34:01,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:01,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:01,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:02,976 INFO L124 PetriNetUnfolderBase]: 2627/4755 cut-off events. [2024-06-27 22:34:02,976 INFO L125 PetriNetUnfolderBase]: For 149013/149013 co-relation queries the response was YES. [2024-06-27 22:34:03,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41529 conditions, 4755 events. 2627/4755 cut-off events. For 149013/149013 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32889 event pairs, 418 based on Foata normal form. 2/4578 useless extension candidates. Maximal degree in co-relation 41362. Up to 3707 conditions per place. [2024-06-27 22:34:03,044 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 635 selfloop transitions, 159 changer transitions 0/800 dead transitions. [2024-06-27 22:34:03,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 800 transitions, 18915 flow [2024-06-27 22:34:03,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:34:03,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:34:03,046 INFO L175 Difference]: Start difference. First operand has 334 places, 764 transitions, 16889 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:34:03,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 800 transitions, 18915 flow [2024-06-27 22:34:03,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 800 transitions, 18832 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-27 22:34:03,845 INFO L231 Difference]: Finished difference. Result has 341 places, 768 transitions, 17193 flow [2024-06-27 22:34:03,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16806, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17193, PETRI_PLACES=341, PETRI_TRANSITIONS=768} [2024-06-27 22:34:03,846 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-27 22:34:03,846 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 768 transitions, 17193 flow [2024-06-27 22:34:03,846 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) [2024-06-27 22:34:03,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:03,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:03,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:34:03,847 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:03,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash -455268243, now seen corresponding path program 3 times [2024-06-27 22:34:03,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:03,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572344723] [2024-06-27 22:34:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:05,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:05,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572344723] [2024-06-27 22:34:05,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572344723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:05,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:05,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:05,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866782685] [2024-06-27 22:34:05,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:05,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:05,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:05,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:05,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:05,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:05,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 768 transitions, 17193 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) [2024-06-27 22:34:05,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:05,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:05,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:07,193 INFO L124 PetriNetUnfolderBase]: 2624/4753 cut-off events. [2024-06-27 22:34:07,193 INFO L125 PetriNetUnfolderBase]: For 150010/150010 co-relation queries the response was YES. [2024-06-27 22:34:07,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41766 conditions, 4753 events. 2624/4753 cut-off events. For 150010/150010 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 32886 event pairs, 421 based on Foata normal form. 2/4575 useless extension candidates. Maximal degree in co-relation 41597. Up to 3751 conditions per place. [2024-06-27 22:34:07,267 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 632 selfloop transitions, 159 changer transitions 0/797 dead transitions. [2024-06-27 22:34:07,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 797 transitions, 19019 flow [2024-06-27 22:34:07,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 22:34:07,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:34:07,268 INFO L175 Difference]: Start difference. First operand has 341 places, 768 transitions, 17193 flow. Second operand 9 states and 153 transitions. [2024-06-27 22:34:07,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 797 transitions, 19019 flow [2024-06-27 22:34:08,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 797 transitions, 18812 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:08,063 INFO L231 Difference]: Finished difference. Result has 345 places, 768 transitions, 17313 flow [2024-06-27 22:34:08,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16986, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17313, PETRI_PLACES=345, PETRI_TRANSITIONS=768} [2024-06-27 22:34:08,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-27 22:34:08,064 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 768 transitions, 17313 flow [2024-06-27 22:34:08,064 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) [2024-06-27 22:34:08,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:08,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:08,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:34:08,064 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:08,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash -368426548, now seen corresponding path program 2 times [2024-06-27 22:34:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205773425] [2024-06-27 22:34:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:09,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:09,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205773425] [2024-06-27 22:34:09,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205773425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:09,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:09,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717082455] [2024-06-27 22:34:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:09,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:09,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:09,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:09,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:09,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:09,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 768 transitions, 17313 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) [2024-06-27 22:34:09,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:09,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:09,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:11,198 INFO L124 PetriNetUnfolderBase]: 2637/4788 cut-off events. [2024-06-27 22:34:11,198 INFO L125 PetriNetUnfolderBase]: For 151881/151881 co-relation queries the response was YES. [2024-06-27 22:34:11,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42194 conditions, 4788 events. 2637/4788 cut-off events. For 151881/151881 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 33078 event pairs, 389 based on Foata normal form. 1/4606 useless extension candidates. Maximal degree in co-relation 42023. Up to 3196 conditions per place. [2024-06-27 22:34:11,269 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 527 selfloop transitions, 276 changer transitions 0/809 dead transitions. [2024-06-27 22:34:11,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 809 transitions, 19274 flow [2024-06-27 22:34:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:11,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:34:11,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:34:11,271 INFO L175 Difference]: Start difference. First operand has 345 places, 768 transitions, 17313 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:34:11,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 809 transitions, 19274 flow [2024-06-27 22:34:12,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 809 transitions, 18971 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:12,082 INFO L231 Difference]: Finished difference. Result has 349 places, 771 transitions, 17621 flow [2024-06-27 22:34:12,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17010, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17621, PETRI_PLACES=349, PETRI_TRANSITIONS=771} [2024-06-27 22:34:12,083 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-27 22:34:12,083 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 771 transitions, 17621 flow [2024-06-27 22:34:12,083 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) [2024-06-27 22:34:12,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:12,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:12,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:34:12,083 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:12,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash -368432128, now seen corresponding path program 3 times [2024-06-27 22:34:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325131667] [2024-06-27 22:34:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:13,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:13,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325131667] [2024-06-27 22:34:13,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325131667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:13,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:13,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:13,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962073213] [2024-06-27 22:34:13,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:13,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:13,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:13,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:13,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:13,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:13,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 771 transitions, 17621 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) [2024-06-27 22:34:13,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:13,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:13,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:15,112 INFO L124 PetriNetUnfolderBase]: 2661/4832 cut-off events. [2024-06-27 22:34:15,112 INFO L125 PetriNetUnfolderBase]: For 158890/158890 co-relation queries the response was YES. [2024-06-27 22:34:15,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43111 conditions, 4832 events. 2661/4832 cut-off events. For 158890/158890 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 33457 event pairs, 396 based on Foata normal form. 1/4648 useless extension candidates. Maximal degree in co-relation 42939. Up to 3670 conditions per place. [2024-06-27 22:34:15,184 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 628 selfloop transitions, 199 changer transitions 0/833 dead transitions. [2024-06-27 22:34:15,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 833 transitions, 20062 flow [2024-06-27 22:34:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:34:15,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 22:34:15,186 INFO L175 Difference]: Start difference. First operand has 349 places, 771 transitions, 17621 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:34:15,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 833 transitions, 20062 flow [2024-06-27 22:34:16,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 833 transitions, 19590 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:16,056 INFO L231 Difference]: Finished difference. Result has 356 places, 789 transitions, 18061 flow [2024-06-27 22:34:16,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17178, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18061, PETRI_PLACES=356, PETRI_TRANSITIONS=789} [2024-06-27 22:34:16,057 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 315 predicate places. [2024-06-27 22:34:16,057 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 789 transitions, 18061 flow [2024-06-27 22:34:16,057 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) [2024-06-27 22:34:16,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:16,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:16,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:34:16,057 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:16,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash -368580153, now seen corresponding path program 4 times [2024-06-27 22:34:16,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:16,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38179163] [2024-06-27 22:34:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:16,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:17,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38179163] [2024-06-27 22:34:17,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38179163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:17,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:17,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638125161] [2024-06-27 22:34:17,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:17,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:17,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:17,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 789 transitions, 18061 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) [2024-06-27 22:34:17,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:17,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:17,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:19,420 INFO L124 PetriNetUnfolderBase]: 2694/4881 cut-off events. [2024-06-27 22:34:19,420 INFO L125 PetriNetUnfolderBase]: For 168769/168769 co-relation queries the response was YES. [2024-06-27 22:34:19,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44074 conditions, 4881 events. 2694/4881 cut-off events. For 168769/168769 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 33970 event pairs, 420 based on Foata normal form. 2/4700 useless extension candidates. Maximal degree in co-relation 43898. Up to 3922 conditions per place. [2024-06-27 22:34:19,507 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 680 selfloop transitions, 136 changer transitions 0/822 dead transitions. [2024-06-27 22:34:19,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 822 transitions, 20121 flow [2024-06-27 22:34:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 22:34:19,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 22:34:19,509 INFO L175 Difference]: Start difference. First operand has 356 places, 789 transitions, 18061 flow. Second operand 9 states and 155 transitions. [2024-06-27 22:34:19,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 822 transitions, 20121 flow [2024-06-27 22:34:20,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 822 transitions, 20026 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-27 22:34:20,506 INFO L231 Difference]: Finished difference. Result has 363 places, 793 transitions, 18315 flow [2024-06-27 22:34:20,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17966, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18315, PETRI_PLACES=363, PETRI_TRANSITIONS=793} [2024-06-27 22:34:20,506 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-27 22:34:20,507 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 793 transitions, 18315 flow [2024-06-27 22:34:20,507 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) [2024-06-27 22:34:20,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:20,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:20,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:34:20,507 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:20,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash -368576278, now seen corresponding path program 4 times [2024-06-27 22:34:20,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:20,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207742832] [2024-06-27 22:34:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:20,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:21,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:21,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207742832] [2024-06-27 22:34:21,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207742832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:21,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:21,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:21,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642054310] [2024-06-27 22:34:21,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:21,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:21,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:21,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:21,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:22,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:22,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 793 transitions, 18315 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) [2024-06-27 22:34:22,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:22,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:22,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:23,972 INFO L124 PetriNetUnfolderBase]: 2735/4961 cut-off events. [2024-06-27 22:34:23,972 INFO L125 PetriNetUnfolderBase]: For 172742/172742 co-relation queries the response was YES. [2024-06-27 22:34:24,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44971 conditions, 4961 events. 2735/4961 cut-off events. For 172742/172742 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 34488 event pairs, 404 based on Foata normal form. 1/4774 useless extension candidates. Maximal degree in co-relation 44793. Up to 3220 conditions per place. [2024-06-27 22:34:24,037 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 554 selfloop transitions, 293 changer transitions 0/853 dead transitions. [2024-06-27 22:34:24,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 853 transitions, 20764 flow [2024-06-27 22:34:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:34:24,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:34:24,039 INFO L175 Difference]: Start difference. First operand has 363 places, 793 transitions, 18315 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:34:24,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 853 transitions, 20764 flow [2024-06-27 22:34:24,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 853 transitions, 20618 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:24,969 INFO L231 Difference]: Finished difference. Result has 371 places, 807 transitions, 19081 flow [2024-06-27 22:34:24,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18169, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19081, PETRI_PLACES=371, PETRI_TRANSITIONS=807} [2024-06-27 22:34:24,970 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 22:34:24,970 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 807 transitions, 19081 flow [2024-06-27 22:34:24,970 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) [2024-06-27 22:34:24,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:24,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:24,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:34:24,971 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:24,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash -252775183, now seen corresponding path program 5 times [2024-06-27 22:34:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:24,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944938895] [2024-06-27 22:34:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:26,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:26,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944938895] [2024-06-27 22:34:26,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944938895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:26,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:26,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:26,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587117079] [2024-06-27 22:34:26,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:26,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:26,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:26,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:26,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:26,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:26,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 807 transitions, 19081 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) [2024-06-27 22:34:26,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:26,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:26,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:28,172 INFO L124 PetriNetUnfolderBase]: 2732/4953 cut-off events. [2024-06-27 22:34:28,172 INFO L125 PetriNetUnfolderBase]: For 179940/179940 co-relation queries the response was YES. [2024-06-27 22:34:28,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45852 conditions, 4953 events. 2732/4953 cut-off events. For 179940/179940 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 34565 event pairs, 431 based on Foata normal form. 2/4768 useless extension candidates. Maximal degree in co-relation 45670. Up to 4049 conditions per place. [2024-06-27 22:34:28,241 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 695 selfloop transitions, 134 changer transitions 0/835 dead transitions. [2024-06-27 22:34:28,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 835 transitions, 21003 flow [2024-06-27 22:34:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 22:34:28,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:34:28,243 INFO L175 Difference]: Start difference. First operand has 371 places, 807 transitions, 19081 flow. Second operand 9 states and 153 transitions. [2024-06-27 22:34:28,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 835 transitions, 21003 flow [2024-06-27 22:34:29,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 835 transitions, 20607 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:29,215 INFO L231 Difference]: Finished difference. Result has 375 places, 807 transitions, 18960 flow [2024-06-27 22:34:29,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18685, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18960, PETRI_PLACES=375, PETRI_TRANSITIONS=807} [2024-06-27 22:34:29,217 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-27 22:34:29,217 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 807 transitions, 18960 flow [2024-06-27 22:34:29,217 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) [2024-06-27 22:34:29,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:29,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:29,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:34:29,218 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:29,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:29,218 INFO L85 PathProgramCache]: Analyzing trace with hash -973719929, now seen corresponding path program 6 times [2024-06-27 22:34:29,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:29,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260189194] [2024-06-27 22:34:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:29,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:30,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:30,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260189194] [2024-06-27 22:34:30,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260189194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:30,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:30,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:30,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264101311] [2024-06-27 22:34:30,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:30,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:30,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:30,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:30,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:30,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 807 transitions, 18960 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) [2024-06-27 22:34:30,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:30,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:30,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:32,547 INFO L124 PetriNetUnfolderBase]: 2747/4975 cut-off events. [2024-06-27 22:34:32,547 INFO L125 PetriNetUnfolderBase]: For 176655/176655 co-relation queries the response was YES. [2024-06-27 22:34:32,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46119 conditions, 4975 events. 2747/4975 cut-off events. For 176655/176655 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 34753 event pairs, 410 based on Foata normal form. 2/4790 useless extension candidates. Maximal degree in co-relation 45935. Up to 3936 conditions per place. [2024-06-27 22:34:32,620 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 680 selfloop transitions, 154 changer transitions 0/840 dead transitions. [2024-06-27 22:34:32,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 840 transitions, 21024 flow [2024-06-27 22:34:32,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:34:32,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:34:32,622 INFO L175 Difference]: Start difference. First operand has 375 places, 807 transitions, 18960 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:34:32,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 840 transitions, 21024 flow [2024-06-27 22:34:33,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 840 transitions, 20777 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:33,614 INFO L231 Difference]: Finished difference. Result has 377 places, 809 transitions, 19065 flow [2024-06-27 22:34:33,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18713, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19065, PETRI_PLACES=377, PETRI_TRANSITIONS=809} [2024-06-27 22:34:33,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-27 22:34:33,616 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 809 transitions, 19065 flow [2024-06-27 22:34:33,616 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) [2024-06-27 22:34:33,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:33,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:33,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:34:33,616 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:33,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:33,616 INFO L85 PathProgramCache]: Analyzing trace with hash -973716209, now seen corresponding path program 7 times [2024-06-27 22:34:33,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:33,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611420368] [2024-06-27 22:34:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:33,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:35,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:35,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611420368] [2024-06-27 22:34:35,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611420368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:35,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:35,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070401611] [2024-06-27 22:34:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:35,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:35,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:35,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:35,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:35,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 809 transitions, 19065 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) [2024-06-27 22:34:35,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:35,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:35,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:36,763 INFO L124 PetriNetUnfolderBase]: 2744/4973 cut-off events. [2024-06-27 22:34:36,764 INFO L125 PetriNetUnfolderBase]: For 175308/175308 co-relation queries the response was YES. [2024-06-27 22:34:36,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46087 conditions, 4973 events. 2744/4973 cut-off events. For 175308/175308 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 34792 event pairs, 418 based on Foata normal form. 2/4787 useless extension candidates. Maximal degree in co-relation 45902. Up to 4030 conditions per place. [2024-06-27 22:34:36,840 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 682 selfloop transitions, 148 changer transitions 0/836 dead transitions. [2024-06-27 22:34:36,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 836 transitions, 20931 flow [2024-06-27 22:34:36,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:36,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:34:36,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:34:36,842 INFO L175 Difference]: Start difference. First operand has 377 places, 809 transitions, 19065 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:34:36,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 836 transitions, 20931 flow [2024-06-27 22:34:37,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 836 transitions, 20403 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:37,847 INFO L231 Difference]: Finished difference. Result has 378 places, 809 transitions, 18841 flow [2024-06-27 22:34:37,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18537, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18841, PETRI_PLACES=378, PETRI_TRANSITIONS=809} [2024-06-27 22:34:37,848 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-27 22:34:37,848 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 809 transitions, 18841 flow [2024-06-27 22:34:37,848 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) [2024-06-27 22:34:37,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:37,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:37,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:34:37,849 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:37,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash -973716054, now seen corresponding path program 5 times [2024-06-27 22:34:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:37,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094937290] [2024-06-27 22:34:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:37,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:39,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:39,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094937290] [2024-06-27 22:34:39,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094937290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:39,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:39,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:39,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911284959] [2024-06-27 22:34:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:39,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:39,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:39,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:39,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:39,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:39,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 809 transitions, 18841 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) [2024-06-27 22:34:39,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:39,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:39,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:41,074 INFO L124 PetriNetUnfolderBase]: 2775/5040 cut-off events. [2024-06-27 22:34:41,074 INFO L125 PetriNetUnfolderBase]: For 179314/179314 co-relation queries the response was YES. [2024-06-27 22:34:41,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45912 conditions, 5040 events. 2775/5040 cut-off events. For 179314/179314 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 35295 event pairs, 394 based on Foata normal form. 1/4847 useless extension candidates. Maximal degree in co-relation 45728. Up to 3694 conditions per place. [2024-06-27 22:34:41,158 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 639 selfloop transitions, 230 changer transitions 0/875 dead transitions. [2024-06-27 22:34:41,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 875 transitions, 21588 flow [2024-06-27 22:34:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:41,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:34:41,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:34:41,159 INFO L175 Difference]: Start difference. First operand has 378 places, 809 transitions, 18841 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:34:41,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 875 transitions, 21588 flow [2024-06-27 22:34:42,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 875 transitions, 21261 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:42,211 INFO L231 Difference]: Finished difference. Result has 384 places, 832 transitions, 19634 flow [2024-06-27 22:34:42,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18514, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19634, PETRI_PLACES=384, PETRI_TRANSITIONS=832} [2024-06-27 22:34:42,212 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-27 22:34:42,212 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 832 transitions, 19634 flow [2024-06-27 22:34:42,212 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) [2024-06-27 22:34:42,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:42,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:42,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:34:42,213 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:42,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash -973566107, now seen corresponding path program 1 times [2024-06-27 22:34:42,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:42,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471147434] [2024-06-27 22:34:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:42,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:43,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:43,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471147434] [2024-06-27 22:34:43,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471147434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:43,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:43,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:43,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726173390] [2024-06-27 22:34:43,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:43,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:43,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:43,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:43,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:43,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:43,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 832 transitions, 19634 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) [2024-06-27 22:34:43,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:43,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:43,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:45,531 INFO L124 PetriNetUnfolderBase]: 2819/5114 cut-off events. [2024-06-27 22:34:45,532 INFO L125 PetriNetUnfolderBase]: For 189858/189858 co-relation queries the response was YES. [2024-06-27 22:34:45,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47219 conditions, 5114 events. 2819/5114 cut-off events. For 189858/189858 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 35865 event pairs, 384 based on Foata normal form. 2/4920 useless extension candidates. Maximal degree in co-relation 47031. Up to 2755 conditions per place. [2024-06-27 22:34:45,615 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 593 selfloop transitions, 289 changer transitions 0/888 dead transitions. [2024-06-27 22:34:45,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 888 transitions, 22299 flow [2024-06-27 22:34:45,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:34:45,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:34:45,617 INFO L175 Difference]: Start difference. First operand has 384 places, 832 transitions, 19634 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:34:45,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 888 transitions, 22299 flow [2024-06-27 22:34:46,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 888 transitions, 22062 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:46,970 INFO L231 Difference]: Finished difference. Result has 390 places, 836 transitions, 20059 flow [2024-06-27 22:34:46,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=19405, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20059, PETRI_PLACES=390, PETRI_TRANSITIONS=836} [2024-06-27 22:34:46,971 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-27 22:34:46,971 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 836 transitions, 20059 flow [2024-06-27 22:34:46,971 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) [2024-06-27 22:34:46,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:46,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:46,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:34:46,971 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:46,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:46,972 INFO L85 PathProgramCache]: Analyzing trace with hash -968001917, now seen corresponding path program 2 times [2024-06-27 22:34:46,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:46,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643411823] [2024-06-27 22:34:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:46,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:48,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:48,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643411823] [2024-06-27 22:34:48,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643411823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:48,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:48,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:48,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405651494] [2024-06-27 22:34:48,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:48,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:48,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:48,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:48,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 836 transitions, 20059 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) [2024-06-27 22:34:48,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:48,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:48,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:50,584 INFO L124 PetriNetUnfolderBase]: 2959/5350 cut-off events. [2024-06-27 22:34:50,585 INFO L125 PetriNetUnfolderBase]: For 210676/210676 co-relation queries the response was YES. [2024-06-27 22:34:50,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49816 conditions, 5350 events. 2959/5350 cut-off events. For 210676/210676 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 37709 event pairs, 400 based on Foata normal form. 2/5149 useless extension candidates. Maximal degree in co-relation 49627. Up to 2869 conditions per place. [2024-06-27 22:34:50,670 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 637 selfloop transitions, 263 changer transitions 0/906 dead transitions. [2024-06-27 22:34:50,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 906 transitions, 23113 flow [2024-06-27 22:34:50,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:34:50,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:34:50,672 INFO L175 Difference]: Start difference. First operand has 390 places, 836 transitions, 20059 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:34:50,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 906 transitions, 23113 flow [2024-06-27 22:34:51,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 906 transitions, 22354 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 22:34:51,986 INFO L231 Difference]: Finished difference. Result has 390 places, 848 transitions, 20050 flow [2024-06-27 22:34:51,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=19336, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20050, PETRI_PLACES=390, PETRI_TRANSITIONS=848} [2024-06-27 22:34:51,987 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-27 22:34:51,987 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 848 transitions, 20050 flow [2024-06-27 22:34:51,987 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) [2024-06-27 22:34:51,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:51,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:51,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:34:51,988 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:51,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:51,988 INFO L85 PathProgramCache]: Analyzing trace with hash -973571904, now seen corresponding path program 6 times [2024-06-27 22:34:51,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:51,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474996955] [2024-06-27 22:34:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:51,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:53,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:53,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474996955] [2024-06-27 22:34:53,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474996955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:53,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:53,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:34:53,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135986845] [2024-06-27 22:34:53,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:53,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:34:53,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:53,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:34:53,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:34:53,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:53,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 848 transitions, 20050 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) [2024-06-27 22:34:53,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:53,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:53,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:55,237 INFO L124 PetriNetUnfolderBase]: 2972/5385 cut-off events. [2024-06-27 22:34:55,237 INFO L125 PetriNetUnfolderBase]: For 206621/206621 co-relation queries the response was YES. [2024-06-27 22:34:55,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49644 conditions, 5385 events. 2972/5385 cut-off events. For 206621/206621 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 37984 event pairs, 440 based on Foata normal form. 1/5179 useless extension candidates. Maximal degree in co-relation 49455. Up to 4279 conditions per place. [2024-06-27 22:34:55,326 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 710 selfloop transitions, 175 changer transitions 0/891 dead transitions. [2024-06-27 22:34:55,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 891 transitions, 22441 flow [2024-06-27 22:34:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:34:55,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:34:55,327 INFO L175 Difference]: Start difference. First operand has 390 places, 848 transitions, 20050 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:34:55,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 891 transitions, 22441 flow [2024-06-27 22:34:56,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 891 transitions, 22116 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:56,671 INFO L231 Difference]: Finished difference. Result has 396 places, 853 transitions, 20320 flow [2024-06-27 22:34:56,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=19727, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20320, PETRI_PLACES=396, PETRI_TRANSITIONS=853} [2024-06-27 22:34:56,672 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-27 22:34:56,672 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 853 transitions, 20320 flow [2024-06-27 22:34:56,672 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) [2024-06-27 22:34:56,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:56,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:56,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:34:56,672 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:56,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:56,673 INFO L85 PathProgramCache]: Analyzing trace with hash -968203944, now seen corresponding path program 7 times [2024-06-27 22:34:56,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:56,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605999746] [2024-06-27 22:34:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:56,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:58,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:58,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605999746] [2024-06-27 22:34:58,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605999746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:58,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:58,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:58,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340517361] [2024-06-27 22:34:58,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:58,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:58,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:58,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:58,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:34:58,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 853 transitions, 20320 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) [2024-06-27 22:34:58,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:58,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:34:58,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:00,332 INFO L124 PetriNetUnfolderBase]: 2990/5423 cut-off events. [2024-06-27 22:35:00,332 INFO L125 PetriNetUnfolderBase]: For 211445/211445 co-relation queries the response was YES. [2024-06-27 22:35:00,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49723 conditions, 5423 events. 2990/5423 cut-off events. For 211445/211445 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 38418 event pairs, 425 based on Foata normal form. 1/5213 useless extension candidates. Maximal degree in co-relation 49531. Up to 3746 conditions per place. [2024-06-27 22:35:00,422 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 615 selfloop transitions, 287 changer transitions 0/908 dead transitions. [2024-06-27 22:35:00,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 908 transitions, 22823 flow [2024-06-27 22:35:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:35:00,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:35:00,424 INFO L175 Difference]: Start difference. First operand has 396 places, 853 transitions, 20320 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:35:00,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 908 transitions, 22823 flow [2024-06-27 22:35:01,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 908 transitions, 22531 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 22:35:02,004 INFO L231 Difference]: Finished difference. Result has 401 places, 858 transitions, 20713 flow [2024-06-27 22:35:02,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20028, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20713, PETRI_PLACES=401, PETRI_TRANSITIONS=858} [2024-06-27 22:35:02,005 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-27 22:35:02,005 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 858 transitions, 20713 flow [2024-06-27 22:35:02,005 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) [2024-06-27 22:35:02,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:02,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:02,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:35:02,006 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:02,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:02,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1083803384, now seen corresponding path program 8 times [2024-06-27 22:35:02,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:02,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826046977] [2024-06-27 22:35:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:02,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:03,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:03,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826046977] [2024-06-27 22:35:03,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826046977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:03,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:03,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:03,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280374294] [2024-06-27 22:35:03,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:03,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:03,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:03,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:03,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 858 transitions, 20713 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:03,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:03,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:03,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:05,703 INFO L124 PetriNetUnfolderBase]: 3008/5451 cut-off events. [2024-06-27 22:35:05,703 INFO L125 PetriNetUnfolderBase]: For 220031/220031 co-relation queries the response was YES. [2024-06-27 22:35:05,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50701 conditions, 5451 events. 3008/5451 cut-off events. For 220031/220031 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 38610 event pairs, 418 based on Foata normal form. 1/5240 useless extension candidates. Maximal degree in co-relation 50508. Up to 3774 conditions per place. [2024-06-27 22:35:05,789 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 612 selfloop transitions, 288 changer transitions 0/906 dead transitions. [2024-06-27 22:35:05,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 906 transitions, 23099 flow [2024-06-27 22:35:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:35:05,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:35:05,791 INFO L175 Difference]: Start difference. First operand has 401 places, 858 transitions, 20713 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:35:05,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 906 transitions, 23099 flow [2024-06-27 22:35:07,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 906 transitions, 22599 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:07,266 INFO L231 Difference]: Finished difference. Result has 404 places, 863 transitions, 20910 flow [2024-06-27 22:35:07,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20217, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=858, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20910, PETRI_PLACES=404, PETRI_TRANSITIONS=863} [2024-06-27 22:35:07,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 22:35:07,267 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 863 transitions, 20910 flow [2024-06-27 22:35:07,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:07,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:07,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:07,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:35:07,268 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:07,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1084010929, now seen corresponding path program 8 times [2024-06-27 22:35:07,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:07,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242496591] [2024-06-27 22:35:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:07,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:08,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:08,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242496591] [2024-06-27 22:35:08,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242496591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:08,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:08,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:35:08,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162123466] [2024-06-27 22:35:08,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:08,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:35:08,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:08,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:35:08,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:35:08,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:08,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 863 transitions, 20910 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) [2024-06-27 22:35:08,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:08,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:08,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:10,248 INFO L124 PetriNetUnfolderBase]: 3005/5439 cut-off events. [2024-06-27 22:35:10,248 INFO L125 PetriNetUnfolderBase]: For 226385/226385 co-relation queries the response was YES. [2024-06-27 22:35:10,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50768 conditions, 5439 events. 3005/5439 cut-off events. For 226385/226385 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 38682 event pairs, 451 based on Foata normal form. 2/5233 useless extension candidates. Maximal degree in co-relation 50574. Up to 4404 conditions per place. [2024-06-27 22:35:10,337 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 739 selfloop transitions, 143 changer transitions 0/888 dead transitions. [2024-06-27 22:35:10,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 888 transitions, 22866 flow [2024-06-27 22:35:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:35:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:35:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 22:35:10,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:35:10,338 INFO L175 Difference]: Start difference. First operand has 404 places, 863 transitions, 20910 flow. Second operand 8 states and 144 transitions. [2024-06-27 22:35:10,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 888 transitions, 22866 flow [2024-06-27 22:35:11,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 888 transitions, 22215 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:11,861 INFO L231 Difference]: Finished difference. Result has 404 places, 863 transitions, 20558 flow [2024-06-27 22:35:11,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20259, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20558, PETRI_PLACES=404, PETRI_TRANSITIONS=863} [2024-06-27 22:35:11,862 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 22:35:11,862 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 863 transitions, 20558 flow [2024-06-27 22:35:11,862 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) [2024-06-27 22:35:11,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:11,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:11,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:35:11,862 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:11,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1084004977, now seen corresponding path program 3 times [2024-06-27 22:35:11,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:11,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061010972] [2024-06-27 22:35:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:13,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:13,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061010972] [2024-06-27 22:35:13,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061010972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:13,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:13,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010708552] [2024-06-27 22:35:13,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:13,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:13,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:13,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:13,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:13,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:13,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 863 transitions, 20558 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) [2024-06-27 22:35:13,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:13,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:13,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:15,344 INFO L124 PetriNetUnfolderBase]: 3001/5423 cut-off events. [2024-06-27 22:35:15,345 INFO L125 PetriNetUnfolderBase]: For 217434/217434 co-relation queries the response was YES. [2024-06-27 22:35:15,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50013 conditions, 5423 events. 3001/5423 cut-off events. For 217434/217434 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 38258 event pairs, 388 based on Foata normal form. 2/5219 useless extension candidates. Maximal degree in co-relation 49818. Up to 2937 conditions per place. [2024-06-27 22:35:15,436 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 659 selfloop transitions, 262 changer transitions 0/927 dead transitions. [2024-06-27 22:35:15,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 927 transitions, 23481 flow [2024-06-27 22:35:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:35:15,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:35:15,438 INFO L175 Difference]: Start difference. First operand has 404 places, 863 transitions, 20558 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:35:15,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 927 transitions, 23481 flow [2024-06-27 22:35:16,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 927 transitions, 23132 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 22:35:16,791 INFO L231 Difference]: Finished difference. Result has 404 places, 863 transitions, 20755 flow [2024-06-27 22:35:16,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20217, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20755, PETRI_PLACES=404, PETRI_TRANSITIONS=863} [2024-06-27 22:35:16,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 22:35:16,792 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 863 transitions, 20755 flow [2024-06-27 22:35:16,792 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) [2024-06-27 22:35:16,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:16,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:16,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:35:16,792 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:16,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:16,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1089367574, now seen corresponding path program 9 times [2024-06-27 22:35:16,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:16,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370632248] [2024-06-27 22:35:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:16,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:18,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:18,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370632248] [2024-06-27 22:35:18,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370632248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:18,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:18,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:18,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098301443] [2024-06-27 22:35:18,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:18,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:18,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:18,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:18,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:18,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:18,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 863 transitions, 20755 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) [2024-06-27 22:35:18,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:18,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:18,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:20,310 INFO L124 PetriNetUnfolderBase]: 3019/5476 cut-off events. [2024-06-27 22:35:20,310 INFO L125 PetriNetUnfolderBase]: For 218581/218581 co-relation queries the response was YES. [2024-06-27 22:35:20,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50763 conditions, 5476 events. 3019/5476 cut-off events. For 218581/218581 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 38884 event pairs, 438 based on Foata normal form. 1/5264 useless extension candidates. Maximal degree in co-relation 50569. Up to 3791 conditions per place. [2024-06-27 22:35:20,391 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 580 selfloop transitions, 322 changer transitions 0/908 dead transitions. [2024-06-27 22:35:20,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 908 transitions, 23105 flow [2024-06-27 22:35:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:35:20,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:35:20,392 INFO L175 Difference]: Start difference. First operand has 404 places, 863 transitions, 20755 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:35:20,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 908 transitions, 23105 flow [2024-06-27 22:35:21,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 908 transitions, 22500 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:21,772 INFO L231 Difference]: Finished difference. Result has 405 places, 868 transitions, 20921 flow [2024-06-27 22:35:21,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20150, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20921, PETRI_PLACES=405, PETRI_TRANSITIONS=868} [2024-06-27 22:35:21,773 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-27 22:35:21,774 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 868 transitions, 20921 flow [2024-06-27 22:35:21,774 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) [2024-06-27 22:35:21,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:21,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:21,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:35:21,774 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:21,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:21,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1083795727, now seen corresponding path program 4 times [2024-06-27 22:35:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435624620] [2024-06-27 22:35:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:23,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:23,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435624620] [2024-06-27 22:35:23,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435624620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:23,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:23,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:23,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931781007] [2024-06-27 22:35:23,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:23,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:23,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:23,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:23,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 868 transitions, 20921 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) [2024-06-27 22:35:23,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:23,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:23,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:25,567 INFO L124 PetriNetUnfolderBase]: 3015/5449 cut-off events. [2024-06-27 22:35:25,568 INFO L125 PetriNetUnfolderBase]: For 217488/217488 co-relation queries the response was YES. [2024-06-27 22:35:25,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50640 conditions, 5449 events. 3015/5449 cut-off events. For 217488/217488 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 38529 event pairs, 397 based on Foata normal form. 2/5244 useless extension candidates. Maximal degree in co-relation 50445. Up to 2962 conditions per place. [2024-06-27 22:35:25,658 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 632 selfloop transitions, 279 changer transitions 0/917 dead transitions. [2024-06-27 22:35:25,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 917 transitions, 23441 flow [2024-06-27 22:35:25,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:35:25,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:35:25,660 INFO L175 Difference]: Start difference. First operand has 405 places, 868 transitions, 20921 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:35:25,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 917 transitions, 23441 flow [2024-06-27 22:35:27,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 917 transitions, 22963 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:27,127 INFO L231 Difference]: Finished difference. Result has 409 places, 868 transitions, 21010 flow [2024-06-27 22:35:27,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20443, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21010, PETRI_PLACES=409, PETRI_TRANSITIONS=868} [2024-06-27 22:35:27,128 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 368 predicate places. [2024-06-27 22:35:27,128 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 868 transitions, 21010 flow [2024-06-27 22:35:27,128 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) [2024-06-27 22:35:27,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:27,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:27,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:35:27,129 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:27,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:27,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1965535047, now seen corresponding path program 5 times [2024-06-27 22:35:27,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:27,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835807211] [2024-06-27 22:35:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:27,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835807211] [2024-06-27 22:35:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835807211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:28,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:28,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:28,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275978246] [2024-06-27 22:35:28,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:28,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:28,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:28,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:28,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:28,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:28,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 868 transitions, 21010 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) [2024-06-27 22:35:28,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:28,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:28,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:30,504 INFO L124 PetriNetUnfolderBase]: 3064/5543 cut-off events. [2024-06-27 22:35:30,504 INFO L125 PetriNetUnfolderBase]: For 225615/225615 co-relation queries the response was YES. [2024-06-27 22:35:30,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51635 conditions, 5543 events. 3064/5543 cut-off events. For 225615/225615 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 39373 event pairs, 482 based on Foata normal form. 2/5332 useless extension candidates. Maximal degree in co-relation 51439. Up to 4655 conditions per place. [2024-06-27 22:35:30,594 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 866 selfloop transitions, 46 changer transitions 0/918 dead transitions. [2024-06-27 22:35:30,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 918 transitions, 23474 flow [2024-06-27 22:35:30,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:30,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:35:30,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:35:30,596 INFO L175 Difference]: Start difference. First operand has 409 places, 868 transitions, 21010 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:35:30,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 918 transitions, 23474 flow [2024-06-27 22:35:32,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 918 transitions, 22862 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:32,062 INFO L231 Difference]: Finished difference. Result has 411 places, 883 transitions, 20805 flow [2024-06-27 22:35:32,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20418, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=825, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20805, PETRI_PLACES=411, PETRI_TRANSITIONS=883} [2024-06-27 22:35:32,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-27 22:35:32,063 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 883 transitions, 20805 flow [2024-06-27 22:35:32,063 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) [2024-06-27 22:35:32,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:32,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:32,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:35:32,064 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:32,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:32,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1737737683, now seen corresponding path program 6 times [2024-06-27 22:35:32,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:32,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857607238] [2024-06-27 22:35:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:32,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:33,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:33,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857607238] [2024-06-27 22:35:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857607238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:33,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:33,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693850169] [2024-06-27 22:35:33,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:33,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:33,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:33,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:33,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 883 transitions, 20805 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) [2024-06-27 22:35:33,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:33,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:33,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:35,786 INFO L124 PetriNetUnfolderBase]: 3171/5716 cut-off events. [2024-06-27 22:35:35,787 INFO L125 PetriNetUnfolderBase]: For 234703/234703 co-relation queries the response was YES. [2024-06-27 22:35:35,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52755 conditions, 5716 events. 3171/5716 cut-off events. For 234703/234703 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 40632 event pairs, 488 based on Foata normal form. 2/5503 useless extension candidates. Maximal degree in co-relation 52555. Up to 4572 conditions per place. [2024-06-27 22:35:35,872 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 860 selfloop transitions, 74 changer transitions 0/940 dead transitions. [2024-06-27 22:35:35,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 940 transitions, 23624 flow [2024-06-27 22:35:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:35,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:35:35,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:35:35,874 INFO L175 Difference]: Start difference. First operand has 411 places, 883 transitions, 20805 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:35:35,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 940 transitions, 23624 flow [2024-06-27 22:35:37,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 940 transitions, 23515 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:37,574 INFO L231 Difference]: Finished difference. Result has 418 places, 896 transitions, 21122 flow [2024-06-27 22:35:37,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20696, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=817, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21122, PETRI_PLACES=418, PETRI_TRANSITIONS=896} [2024-06-27 22:35:37,575 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-27 22:35:37,575 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 896 transitions, 21122 flow [2024-06-27 22:35:37,575 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) [2024-06-27 22:35:37,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:37,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:37,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:35:37,575 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:37,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:37,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1730378376, now seen corresponding path program 10 times [2024-06-27 22:35:37,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:37,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139610029] [2024-06-27 22:35:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:37,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:38,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139610029] [2024-06-27 22:35:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139610029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:38,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:38,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:38,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585394106] [2024-06-27 22:35:38,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:38,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:38,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:38,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:38,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:38,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:38,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 896 transitions, 21122 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) [2024-06-27 22:35:38,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:38,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:38,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:41,067 INFO L124 PetriNetUnfolderBase]: 3189/5784 cut-off events. [2024-06-27 22:35:41,068 INFO L125 PetriNetUnfolderBase]: For 236994/236994 co-relation queries the response was YES. [2024-06-27 22:35:41,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53304 conditions, 5784 events. 3189/5784 cut-off events. For 236994/236994 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 41427 event pairs, 518 based on Foata normal form. 1/5559 useless extension candidates. Maximal degree in co-relation 53101. Up to 4770 conditions per place. [2024-06-27 22:35:41,168 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 840 selfloop transitions, 102 changer transitions 0/948 dead transitions. [2024-06-27 22:35:41,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 948 transitions, 23728 flow [2024-06-27 22:35:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:41,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:35:41,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:35:41,169 INFO L175 Difference]: Start difference. First operand has 418 places, 896 transitions, 21122 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:35:41,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 948 transitions, 23728 flow [2024-06-27 22:35:42,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 948 transitions, 23649 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 22:35:42,746 INFO L231 Difference]: Finished difference. Result has 425 places, 901 transitions, 21386 flow [2024-06-27 22:35:42,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21043, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=794, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21386, PETRI_PLACES=425, PETRI_TRANSITIONS=901} [2024-06-27 22:35:42,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 384 predicate places. [2024-06-27 22:35:42,747 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 901 transitions, 21386 flow [2024-06-27 22:35:42,748 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) [2024-06-27 22:35:42,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:42,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:42,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:35:42,748 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:42,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:42,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1965179508, now seen corresponding path program 1 times [2024-06-27 22:35:42,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:42,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846259966] [2024-06-27 22:35:42,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:42,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:44,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:44,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846259966] [2024-06-27 22:35:44,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846259966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:44,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:44,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083658391] [2024-06-27 22:35:44,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:44,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:44,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:44,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:44,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:44,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:44,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 901 transitions, 21386 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:44,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:44,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:44,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:46,599 INFO L124 PetriNetUnfolderBase]: 3194/5764 cut-off events. [2024-06-27 22:35:46,599 INFO L125 PetriNetUnfolderBase]: For 239287/239287 co-relation queries the response was YES. [2024-06-27 22:35:46,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53640 conditions, 5764 events. 3194/5764 cut-off events. For 239287/239287 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 41061 event pairs, 499 based on Foata normal form. 1/5546 useless extension candidates. Maximal degree in co-relation 53435. Up to 4909 conditions per place. [2024-06-27 22:35:46,704 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 884 selfloop transitions, 49 changer transitions 0/939 dead transitions. [2024-06-27 22:35:46,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 939 transitions, 23610 flow [2024-06-27 22:35:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:35:46,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:35:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 22:35:46,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 22:35:46,705 INFO L175 Difference]: Start difference. First operand has 425 places, 901 transitions, 21386 flow. Second operand 11 states and 174 transitions. [2024-06-27 22:35:46,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 939 transitions, 23610 flow [2024-06-27 22:35:48,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 939 transitions, 23271 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:48,369 INFO L231 Difference]: Finished difference. Result has 429 places, 907 transitions, 21309 flow [2024-06-27 22:35:48,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21061, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21309, PETRI_PLACES=429, PETRI_TRANSITIONS=907} [2024-06-27 22:35:48,370 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-27 22:35:48,370 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 907 transitions, 21309 flow [2024-06-27 22:35:48,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:48,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:48,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:48,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:35:48,371 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:48,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1339605501, now seen corresponding path program 7 times [2024-06-27 22:35:48,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:48,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010647308] [2024-06-27 22:35:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:48,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:49,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:49,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010647308] [2024-06-27 22:35:49,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010647308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:49,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:49,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:49,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565560062] [2024-06-27 22:35:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:49,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:49,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:49,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:49,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:49,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 907 transitions, 21309 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) [2024-06-27 22:35:49,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:49,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:49,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:51,955 INFO L124 PetriNetUnfolderBase]: 3190/5739 cut-off events. [2024-06-27 22:35:51,955 INFO L125 PetriNetUnfolderBase]: For 240239/240239 co-relation queries the response was YES. [2024-06-27 22:35:52,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53354 conditions, 5739 events. 3190/5739 cut-off events. For 240239/240239 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 40816 event pairs, 468 based on Foata normal form. 2/5528 useless extension candidates. Maximal degree in co-relation 53147. Up to 4603 conditions per place. [2024-06-27 22:35:52,053 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 863 selfloop transitions, 81 changer transitions 0/950 dead transitions. [2024-06-27 22:35:52,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 950 transitions, 23655 flow [2024-06-27 22:35:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:52,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:35:52,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:35:52,055 INFO L175 Difference]: Start difference. First operand has 429 places, 907 transitions, 21309 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:35:52,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 950 transitions, 23655 flow [2024-06-27 22:35:53,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 950 transitions, 23490 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:53,573 INFO L231 Difference]: Finished difference. Result has 431 places, 908 transitions, 21359 flow [2024-06-27 22:35:53,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21144, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=907, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=826, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21359, PETRI_PLACES=431, PETRI_TRANSITIONS=908} [2024-06-27 22:35:53,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-27 22:35:53,574 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 908 transitions, 21359 flow [2024-06-27 22:35:53,574 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) [2024-06-27 22:35:53,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:53,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:53,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:35:53,574 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:53,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1975633204, now seen corresponding path program 11 times [2024-06-27 22:35:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:53,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891536355] [2024-06-27 22:35:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:53,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:54,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891536355] [2024-06-27 22:35:54,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891536355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:54,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:54,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:54,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855849666] [2024-06-27 22:35:54,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:54,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:54,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:54,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:55,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:35:55,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 908 transitions, 21359 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) [2024-06-27 22:35:55,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:55,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:35:55,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:57,156 INFO L124 PetriNetUnfolderBase]: 3201/5796 cut-off events. [2024-06-27 22:35:57,156 INFO L125 PetriNetUnfolderBase]: For 238329/238329 co-relation queries the response was YES. [2024-06-27 22:35:57,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53885 conditions, 5796 events. 3201/5796 cut-off events. For 238329/238329 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 41493 event pairs, 518 based on Foata normal form. 1/5572 useless extension candidates. Maximal degree in co-relation 53677. Up to 4951 conditions per place. [2024-06-27 22:35:57,260 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 897 selfloop transitions, 60 changer transitions 0/963 dead transitions. [2024-06-27 22:35:57,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 963 transitions, 24241 flow [2024-06-27 22:35:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:35:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:35:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 22:35:57,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 22:35:57,262 INFO L175 Difference]: Start difference. First operand has 431 places, 908 transitions, 21359 flow. Second operand 11 states and 172 transitions. [2024-06-27 22:35:57,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 963 transitions, 24241 flow [2024-06-27 22:35:58,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 963 transitions, 24095 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:58,812 INFO L231 Difference]: Finished difference. Result has 437 places, 936 transitions, 22266 flow [2024-06-27 22:35:58,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21229, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=853, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22266, PETRI_PLACES=437, PETRI_TRANSITIONS=936} [2024-06-27 22:35:58,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-27 22:35:58,813 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 936 transitions, 22266 flow [2024-06-27 22:35:58,813 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) [2024-06-27 22:35:58,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:58,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:58,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:35:58,814 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:58,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:58,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2034926359, now seen corresponding path program 8 times [2024-06-27 22:35:58,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:58,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841944595] [2024-06-27 22:35:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841944595] [2024-06-27 22:36:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841944595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:00,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:00,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:00,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712757904] [2024-06-27 22:36:00,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:00,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:00,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:00,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:00,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:36:00,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 936 transitions, 22266 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) [2024-06-27 22:36:00,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:00,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:36:00,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:02,638 INFO L124 PetriNetUnfolderBase]: 3280/5923 cut-off events. [2024-06-27 22:36:02,639 INFO L125 PetriNetUnfolderBase]: For 250437/250437 co-relation queries the response was YES. [2024-06-27 22:36:02,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55158 conditions, 5923 events. 3280/5923 cut-off events. For 250437/250437 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 42399 event pairs, 477 based on Foata normal form. 2/5699 useless extension candidates. Maximal degree in co-relation 54947. Up to 4451 conditions per place. [2024-06-27 22:36:02,729 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 874 selfloop transitions, 129 changer transitions 0/1009 dead transitions. [2024-06-27 22:36:02,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1009 transitions, 25476 flow [2024-06-27 22:36:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:02,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:02,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:36:02,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:36:02,730 INFO L175 Difference]: Start difference. First operand has 437 places, 936 transitions, 22266 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:36:02,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 1009 transitions, 25476 flow [2024-06-27 22:36:04,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1009 transitions, 25188 flow, removed 135 selfloop flow, removed 4 redundant places. [2024-06-27 22:36:04,280 INFO L231 Difference]: Finished difference. Result has 444 places, 950 transitions, 22597 flow [2024-06-27 22:36:04,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21990, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22597, PETRI_PLACES=444, PETRI_TRANSITIONS=950} [2024-06-27 22:36:04,281 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-27 22:36:04,281 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 950 transitions, 22597 flow [2024-06-27 22:36:04,281 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) [2024-06-27 22:36:04,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:04,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:04,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:36:04,282 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:04,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2035128169, now seen corresponding path program 9 times [2024-06-27 22:36:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:04,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304034598] [2024-06-27 22:36:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:04,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:05,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:05,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304034598] [2024-06-27 22:36:05,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304034598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:05,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:05,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:05,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549462970] [2024-06-27 22:36:05,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:05,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:05,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:05,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:36:05,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 950 transitions, 22597 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) [2024-06-27 22:36:05,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:05,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:36:05,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:08,011 INFO L124 PetriNetUnfolderBase]: 3324/6002 cut-off events. [2024-06-27 22:36:08,012 INFO L125 PetriNetUnfolderBase]: For 258896/258896 co-relation queries the response was YES. [2024-06-27 22:36:08,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56532 conditions, 6002 events. 3324/6002 cut-off events. For 258896/258896 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 43145 event pairs, 522 based on Foata normal form. 2/5774 useless extension candidates. Maximal degree in co-relation 56318. Up to 4487 conditions per place. [2024-06-27 22:36:08,117 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 888 selfloop transitions, 121 changer transitions 0/1015 dead transitions. [2024-06-27 22:36:08,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1015 transitions, 25666 flow [2024-06-27 22:36:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:08,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:08,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:36:08,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:36:08,119 INFO L175 Difference]: Start difference. First operand has 444 places, 950 transitions, 22597 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:36:08,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 1015 transitions, 25666 flow [2024-06-27 22:36:09,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 1015 transitions, 25521 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:09,712 INFO L231 Difference]: Finished difference. Result has 448 places, 954 transitions, 22796 flow [2024-06-27 22:36:09,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=22456, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=833, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22796, PETRI_PLACES=448, PETRI_TRANSITIONS=954} [2024-06-27 22:36:09,713 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-27 22:36:09,713 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 954 transitions, 22796 flow [2024-06-27 22:36:09,713 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) [2024-06-27 22:36:09,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:09,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:09,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:36:09,713 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:09,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2035127952, now seen corresponding path program 12 times [2024-06-27 22:36:09,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:09,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075855367] [2024-06-27 22:36:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:09,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:11,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:11,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075855367] [2024-06-27 22:36:11,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075855367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:11,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:11,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:11,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043956145] [2024-06-27 22:36:11,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:11,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:11,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:11,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:36:11,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 954 transitions, 22796 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) [2024-06-27 22:36:11,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:11,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:36:11,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:13,871 INFO L124 PetriNetUnfolderBase]: 3332/6047 cut-off events. [2024-06-27 22:36:13,872 INFO L125 PetriNetUnfolderBase]: For 255945/255945 co-relation queries the response was YES. [2024-06-27 22:36:13,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56979 conditions, 6047 events. 3332/6047 cut-off events. For 255945/255945 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 43695 event pairs, 558 based on Foata normal form. 1/5808 useless extension candidates. Maximal degree in co-relation 56763. Up to 4991 conditions per place. [2024-06-27 22:36:13,965 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 890 selfloop transitions, 106 changer transitions 0/1002 dead transitions. [2024-06-27 22:36:13,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1002 transitions, 25419 flow [2024-06-27 22:36:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:36:13,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:36:13,966 INFO L175 Difference]: Start difference. First operand has 448 places, 954 transitions, 22796 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:36:13,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 1002 transitions, 25419 flow [2024-06-27 22:36:15,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1002 transitions, 25222 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:15,587 INFO L231 Difference]: Finished difference. Result has 452 places, 959 transitions, 22970 flow [2024-06-27 22:36:15,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=22601, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=848, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22970, PETRI_PLACES=452, PETRI_TRANSITIONS=959} [2024-06-27 22:36:15,588 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 411 predicate places. [2024-06-27 22:36:15,588 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 959 transitions, 22970 flow [2024-06-27 22:36:15,588 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) [2024-06-27 22:36:15,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:15,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:15,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:36:15,589 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:15,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1399767865, now seen corresponding path program 10 times [2024-06-27 22:36:15,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:15,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424348224] [2024-06-27 22:36:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:17,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:17,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424348224] [2024-06-27 22:36:17,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424348224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:17,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:17,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:17,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944714187] [2024-06-27 22:36:17,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:17,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:17,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:17,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:17,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:17,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:36:17,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 959 transitions, 22970 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) [2024-06-27 22:36:17,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:17,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:36:17,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:19,868 INFO L124 PetriNetUnfolderBase]: 3328/6010 cut-off events. [2024-06-27 22:36:19,868 INFO L125 PetriNetUnfolderBase]: For 257126/257126 co-relation queries the response was YES. [2024-06-27 22:36:19,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56638 conditions, 6010 events. 3328/6010 cut-off events. For 257126/257126 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 43190 event pairs, 521 based on Foata normal form. 2/5781 useless extension candidates. Maximal degree in co-relation 56421. Up to 4497 conditions per place. [2024-06-27 22:36:19,973 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 879 selfloop transitions, 127 changer transitions 0/1012 dead transitions. [2024-06-27 22:36:19,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1012 transitions, 25679 flow [2024-06-27 22:36:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:36:19,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:36:19,975 INFO L175 Difference]: Start difference. First operand has 452 places, 959 transitions, 22970 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:36:19,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1012 transitions, 25679 flow [2024-06-27 22:36:21,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1012 transitions, 25364 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:21,771 INFO L231 Difference]: Finished difference. Result has 454 places, 959 transitions, 22916 flow [2024-06-27 22:36:21,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=22655, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22916, PETRI_PLACES=454, PETRI_TRANSITIONS=959} [2024-06-27 22:36:21,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-27 22:36:21,772 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 959 transitions, 22916 flow [2024-06-27 22:36:21,773 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) [2024-06-27 22:36:21,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:21,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:21,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:36:21,773 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:21,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:21,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1047306359, now seen corresponding path program 9 times [2024-06-27 22:36:21,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:21,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421410404] [2024-06-27 22:36:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:21,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:23,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:23,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421410404] [2024-06-27 22:36:23,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421410404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:23,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:23,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:23,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350088820] [2024-06-27 22:36:23,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:23,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:23,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:23,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:23,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:23,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:23,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 959 transitions, 22916 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) [2024-06-27 22:36:23,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:23,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:23,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:25,188 INFO L124 PetriNetUnfolderBase]: 3185/5859 cut-off events. [2024-06-27 22:36:25,188 INFO L125 PetriNetUnfolderBase]: For 261253/261312 co-relation queries the response was YES. [2024-06-27 22:36:25,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55520 conditions, 5859 events. 3185/5859 cut-off events. For 261253/261312 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 42992 event pairs, 400 based on Foata normal form. 15/5599 useless extension candidates. Maximal degree in co-relation 55302. Up to 3788 conditions per place. [2024-06-27 22:36:25,295 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 717 selfloop transitions, 263 changer transitions 0/992 dead transitions. [2024-06-27 22:36:25,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 992 transitions, 25400 flow [2024-06-27 22:36:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:36:25,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 22:36:25,297 INFO L175 Difference]: Start difference. First operand has 454 places, 959 transitions, 22916 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:36:25,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 992 transitions, 25400 flow [2024-06-27 22:36:27,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 992 transitions, 25126 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:27,022 INFO L231 Difference]: Finished difference. Result has 454 places, 963 transitions, 23340 flow [2024-06-27 22:36:27,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=22642, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23340, PETRI_PLACES=454, PETRI_TRANSITIONS=963} [2024-06-27 22:36:27,023 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-27 22:36:27,023 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 963 transitions, 23340 flow [2024-06-27 22:36:27,023 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) [2024-06-27 22:36:27,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:27,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:27,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:36:27,024 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:27,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:27,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1822970267, now seen corresponding path program 10 times [2024-06-27 22:36:27,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:27,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385297509] [2024-06-27 22:36:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:27,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:28,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:28,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385297509] [2024-06-27 22:36:28,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385297509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:28,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:28,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:28,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433610484] [2024-06-27 22:36:28,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:28,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:28,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:28,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:28,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:28,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 963 transitions, 23340 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) [2024-06-27 22:36:28,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:28,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:28,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:30,459 INFO L124 PetriNetUnfolderBase]: 3197/5878 cut-off events. [2024-06-27 22:36:30,459 INFO L125 PetriNetUnfolderBase]: For 268673/268732 co-relation queries the response was YES. [2024-06-27 22:36:30,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56262 conditions, 5878 events. 3197/5878 cut-off events. For 268673/268732 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 43157 event pairs, 455 based on Foata normal form. 15/5618 useless extension candidates. Maximal degree in co-relation 56043. Up to 4283 conditions per place. [2024-06-27 22:36:30,564 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 739 selfloop transitions, 243 changer transitions 0/994 dead transitions. [2024-06-27 22:36:30,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 994 transitions, 25644 flow [2024-06-27 22:36:30,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:30,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:36:30,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 22:36:30,566 INFO L175 Difference]: Start difference. First operand has 454 places, 963 transitions, 23340 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:36:30,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 994 transitions, 25644 flow [2024-06-27 22:36:32,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 994 transitions, 25209 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:32,521 INFO L231 Difference]: Finished difference. Result has 457 places, 965 transitions, 23494 flow [2024-06-27 22:36:32,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=22939, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23494, PETRI_PLACES=457, PETRI_TRANSITIONS=965} [2024-06-27 22:36:32,522 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-27 22:36:32,522 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 965 transitions, 23494 flow [2024-06-27 22:36:32,522 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) [2024-06-27 22:36:32,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:32,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:32,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:36:32,522 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:32,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:32,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1045428534, now seen corresponding path program 13 times [2024-06-27 22:36:32,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:32,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209097991] [2024-06-27 22:36:32,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:32,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:33,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:33,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209097991] [2024-06-27 22:36:33,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209097991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:33,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:33,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:33,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909421418] [2024-06-27 22:36:33,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:33,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:33,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:33,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:33,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:33,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:33,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 965 transitions, 23494 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) [2024-06-27 22:36:33,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:33,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:33,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:36,357 INFO L124 PetriNetUnfolderBase]: 3234/5923 cut-off events. [2024-06-27 22:36:36,357 INFO L125 PetriNetUnfolderBase]: For 269699/269758 co-relation queries the response was YES. [2024-06-27 22:36:36,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57172 conditions, 5923 events. 3234/5923 cut-off events. For 269699/269758 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 43310 event pairs, 397 based on Foata normal form. 14/5670 useless extension candidates. Maximal degree in co-relation 56952. Up to 3082 conditions per place. [2024-06-27 22:36:36,453 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 519 selfloop transitions, 497 changer transitions 0/1028 dead transitions. [2024-06-27 22:36:36,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1028 transitions, 26829 flow [2024-06-27 22:36:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:36:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:36:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-27 22:36:36,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:36:36,454 INFO L175 Difference]: Start difference. First operand has 457 places, 965 transitions, 23494 flow. Second operand 12 states and 222 transitions. [2024-06-27 22:36:36,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1028 transitions, 26829 flow [2024-06-27 22:36:38,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1028 transitions, 26311 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:38,335 INFO L231 Difference]: Finished difference. Result has 464 places, 975 transitions, 24648 flow [2024-06-27 22:36:38,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=22982, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=965, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=489, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=24648, PETRI_PLACES=464, PETRI_TRANSITIONS=975} [2024-06-27 22:36:38,336 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 423 predicate places. [2024-06-27 22:36:38,336 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 975 transitions, 24648 flow [2024-06-27 22:36:38,337 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) [2024-06-27 22:36:38,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:38,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:38,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:36:38,337 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:38,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:38,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1045432409, now seen corresponding path program 11 times [2024-06-27 22:36:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:38,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805443812] [2024-06-27 22:36:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:38,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:39,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:39,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805443812] [2024-06-27 22:36:39,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805443812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:39,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:39,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:39,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902481305] [2024-06-27 22:36:39,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:39,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:39,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:39,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:39,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:39,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:39,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 975 transitions, 24648 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) [2024-06-27 22:36:39,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:39,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:39,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:41,890 INFO L124 PetriNetUnfolderBase]: 3246/5968 cut-off events. [2024-06-27 22:36:41,890 INFO L125 PetriNetUnfolderBase]: For 285234/285293 co-relation queries the response was YES. [2024-06-27 22:36:41,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58824 conditions, 5968 events. 3246/5968 cut-off events. For 285234/285293 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 43944 event pairs, 453 based on Foata normal form. 15/5706 useless extension candidates. Maximal degree in co-relation 58601. Up to 4280 conditions per place. [2024-06-27 22:36:41,993 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 750 selfloop transitions, 244 changer transitions 0/1006 dead transitions. [2024-06-27 22:36:41,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 1006 transitions, 26926 flow [2024-06-27 22:36:41,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:41,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:36:41,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:36:41,994 INFO L175 Difference]: Start difference. First operand has 464 places, 975 transitions, 24648 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:36:41,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 1006 transitions, 26926 flow [2024-06-27 22:36:43,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1006 transitions, 26348 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:43,774 INFO L231 Difference]: Finished difference. Result has 465 places, 977 transitions, 24626 flow [2024-06-27 22:36:43,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24072, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24626, PETRI_PLACES=465, PETRI_TRANSITIONS=977} [2024-06-27 22:36:43,775 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-27 22:36:43,775 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 977 transitions, 24626 flow [2024-06-27 22:36:43,776 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) [2024-06-27 22:36:43,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:43,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:43,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:36:43,776 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:43,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1403661012, now seen corresponding path program 14 times [2024-06-27 22:36:43,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:43,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232325884] [2024-06-27 22:36:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:43,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:45,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:45,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232325884] [2024-06-27 22:36:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232325884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962374942] [2024-06-27 22:36:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:45,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:45,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:45,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:45,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 977 transitions, 24626 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) [2024-06-27 22:36:45,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:45,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:45,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:47,394 INFO L124 PetriNetUnfolderBase]: 3257/5958 cut-off events. [2024-06-27 22:36:47,394 INFO L125 PetriNetUnfolderBase]: For 274162/274221 co-relation queries the response was YES. [2024-06-27 22:36:47,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59103 conditions, 5958 events. 3257/5958 cut-off events. For 274162/274221 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 43633 event pairs, 410 based on Foata normal form. 14/5705 useless extension candidates. Maximal degree in co-relation 58880. Up to 3959 conditions per place. [2024-06-27 22:36:47,506 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 645 selfloop transitions, 350 changer transitions 0/1007 dead transitions. [2024-06-27 22:36:47,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1007 transitions, 26931 flow [2024-06-27 22:36:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:36:47,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:36:47,507 INFO L175 Difference]: Start difference. First operand has 465 places, 977 transitions, 24626 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:36:47,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 1007 transitions, 26931 flow [2024-06-27 22:36:49,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1007 transitions, 26408 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:49,334 INFO L231 Difference]: Finished difference. Result has 466 places, 980 transitions, 24933 flow [2024-06-27 22:36:49,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24105, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=977, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24933, PETRI_PLACES=466, PETRI_TRANSITIONS=980} [2024-06-27 22:36:49,334 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-27 22:36:49,335 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 980 transitions, 24933 flow [2024-06-27 22:36:49,335 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) [2024-06-27 22:36:49,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:49,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:49,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:36:49,335 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:49,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash -958592574, now seen corresponding path program 15 times [2024-06-27 22:36:49,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:49,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859654728] [2024-06-27 22:36:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:49,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:50,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:50,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859654728] [2024-06-27 22:36:50,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859654728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:50,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:50,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:50,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908522503] [2024-06-27 22:36:50,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:50,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:50,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:50,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:50,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:50,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:50,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 980 transitions, 24933 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2024-06-27 22:36:50,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:50,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:50,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:52,950 INFO L124 PetriNetUnfolderBase]: 3266/5978 cut-off events. [2024-06-27 22:36:52,951 INFO L125 PetriNetUnfolderBase]: For 278830/278889 co-relation queries the response was YES. [2024-06-27 22:36:53,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59610 conditions, 5978 events. 3266/5978 cut-off events. For 278830/278889 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 43775 event pairs, 414 based on Foata normal form. 14/5724 useless extension candidates. Maximal degree in co-relation 59387. Up to 3845 conditions per place. [2024-06-27 22:36:53,066 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 644 selfloop transitions, 358 changer transitions 0/1014 dead transitions. [2024-06-27 22:36:53,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 1014 transitions, 27442 flow [2024-06-27 22:36:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:36:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:36:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 22:36:53,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444015444015444 [2024-06-27 22:36:53,068 INFO L175 Difference]: Start difference. First operand has 466 places, 980 transitions, 24933 flow. Second operand 7 states and 141 transitions. [2024-06-27 22:36:53,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 1014 transitions, 27442 flow [2024-06-27 22:36:54,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1014 transitions, 26676 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:54,896 INFO L231 Difference]: Finished difference. Result has 467 places, 987 transitions, 25174 flow [2024-06-27 22:36:54,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24177, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=352, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25174, PETRI_PLACES=467, PETRI_TRANSITIONS=987} [2024-06-27 22:36:54,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-27 22:36:54,897 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 987 transitions, 25174 flow [2024-06-27 22:36:54,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2024-06-27 22:36:54,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:54,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:54,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:36:54,897 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:54,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:54,905 INFO L85 PathProgramCache]: Analyzing trace with hash -958736879, now seen corresponding path program 12 times [2024-06-27 22:36:54,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:54,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013609988] [2024-06-27 22:36:54,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:54,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:56,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013609988] [2024-06-27 22:36:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013609988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:56,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:56,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098231597] [2024-06-27 22:36:56,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:56,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:56,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:56,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:56,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:56,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 987 transitions, 25174 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) [2024-06-27 22:36:56,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:56,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:56,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:58,438 INFO L124 PetriNetUnfolderBase]: 3280/6029 cut-off events. [2024-06-27 22:36:58,438 INFO L125 PetriNetUnfolderBase]: For 286675/286734 co-relation queries the response was YES. [2024-06-27 22:36:58,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59912 conditions, 6029 events. 3280/6029 cut-off events. For 286675/286734 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 44439 event pairs, 461 based on Foata normal form. 15/5766 useless extension candidates. Maximal degree in co-relation 59688. Up to 4657 conditions per place. [2024-06-27 22:36:58,555 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 803 selfloop transitions, 201 changer transitions 0/1016 dead transitions. [2024-06-27 22:36:58,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 1016 transitions, 27490 flow [2024-06-27 22:36:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:58,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:36:58,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:36:58,557 INFO L175 Difference]: Start difference. First operand has 467 places, 987 transitions, 25174 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:36:58,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 1016 transitions, 27490 flow [2024-06-27 22:37:00,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 1016 transitions, 27018 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-27 22:37:00,582 INFO L231 Difference]: Finished difference. Result has 472 places, 989 transitions, 25179 flow [2024-06-27 22:37:00,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24702, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=987, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=786, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25179, PETRI_PLACES=472, PETRI_TRANSITIONS=989} [2024-06-27 22:37:00,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-27 22:37:00,583 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 989 transitions, 25179 flow [2024-06-27 22:37:00,583 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) [2024-06-27 22:37:00,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:00,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:37:00,584 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash -958740599, now seen corresponding path program 13 times [2024-06-27 22:37:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883917934] [2024-06-27 22:37:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:02,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883917934] [2024-06-27 22:37:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883917934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:02,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306250547] [2024-06-27 22:37:02,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:02,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:02,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:02,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:02,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 989 transitions, 25179 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) [2024-06-27 22:37:02,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:02,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:02,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:04,389 INFO L124 PetriNetUnfolderBase]: 3290/6047 cut-off events. [2024-06-27 22:37:04,389 INFO L125 PetriNetUnfolderBase]: For 280954/281013 co-relation queries the response was YES. [2024-06-27 22:37:04,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60332 conditions, 6047 events. 3290/6047 cut-off events. For 280954/281013 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 44598 event pairs, 458 based on Foata normal form. 15/5786 useless extension candidates. Maximal degree in co-relation 60106. Up to 4568 conditions per place. [2024-06-27 22:37:04,490 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 801 selfloop transitions, 205 changer transitions 0/1018 dead transitions. [2024-06-27 22:37:04,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1018 transitions, 27481 flow [2024-06-27 22:37:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:37:04,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 22:37:04,491 INFO L175 Difference]: Start difference. First operand has 472 places, 989 transitions, 25179 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:37:04,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1018 transitions, 27481 flow [2024-06-27 22:37:06,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 1018 transitions, 27114 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:06,410 INFO L231 Difference]: Finished difference. Result has 474 places, 991 transitions, 25296 flow [2024-06-27 22:37:06,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24812, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25296, PETRI_PLACES=474, PETRI_TRANSITIONS=991} [2024-06-27 22:37:06,411 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 433 predicate places. [2024-06-27 22:37:06,411 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 991 transitions, 25296 flow [2024-06-27 22:37:06,411 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) [2024-06-27 22:37:06,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:06,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:06,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:37:06,412 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:06,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:06,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1732684967, now seen corresponding path program 14 times [2024-06-27 22:37:06,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:06,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422782209] [2024-06-27 22:37:06,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:06,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:07,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:07,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422782209] [2024-06-27 22:37:07,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422782209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:07,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:07,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:07,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360271665] [2024-06-27 22:37:07,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:07,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:07,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:07,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:07,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:07,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 991 transitions, 25296 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) [2024-06-27 22:37:07,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:07,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:07,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:10,124 INFO L124 PetriNetUnfolderBase]: 3295/6066 cut-off events. [2024-06-27 22:37:10,125 INFO L125 PetriNetUnfolderBase]: For 280917/280979 co-relation queries the response was YES. [2024-06-27 22:37:10,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60436 conditions, 6066 events. 3295/6066 cut-off events. For 280917/280979 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 44906 event pairs, 400 based on Foata normal form. 18/5803 useless extension candidates. Maximal degree in co-relation 60210. Up to 4437 conditions per place. [2024-06-27 22:37:10,235 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 771 selfloop transitions, 244 changer transitions 0/1027 dead transitions. [2024-06-27 22:37:10,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 1027 transitions, 27851 flow [2024-06-27 22:37:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:37:10,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 22:37:10,236 INFO L175 Difference]: Start difference. First operand has 474 places, 991 transitions, 25296 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:37:10,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 1027 transitions, 27851 flow [2024-06-27 22:37:12,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 1027 transitions, 27398 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:12,386 INFO L231 Difference]: Finished difference. Result has 475 places, 993 transitions, 25408 flow [2024-06-27 22:37:12,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24845, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25408, PETRI_PLACES=475, PETRI_TRANSITIONS=993} [2024-06-27 22:37:12,387 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-27 22:37:12,387 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 993 transitions, 25408 flow [2024-06-27 22:37:12,387 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) [2024-06-27 22:37:12,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:12,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:12,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:37:12,387 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:12,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:12,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2009737547, now seen corresponding path program 15 times [2024-06-27 22:37:12,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:12,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155798706] [2024-06-27 22:37:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:12,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:13,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:13,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155798706] [2024-06-27 22:37:13,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155798706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:13,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:13,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:13,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251141241] [2024-06-27 22:37:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:13,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:13,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:13,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:13,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:13,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 993 transitions, 25408 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) [2024-06-27 22:37:13,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:13,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:13,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:15,966 INFO L124 PetriNetUnfolderBase]: 3292/6061 cut-off events. [2024-06-27 22:37:15,967 INFO L125 PetriNetUnfolderBase]: For 273181/273243 co-relation queries the response was YES. [2024-06-27 22:37:16,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60277 conditions, 6061 events. 3292/6061 cut-off events. For 273181/273243 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 44837 event pairs, 471 based on Foata normal form. 18/5795 useless extension candidates. Maximal degree in co-relation 60051. Up to 4603 conditions per place. [2024-06-27 22:37:16,083 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 780 selfloop transitions, 234 changer transitions 0/1026 dead transitions. [2024-06-27 22:37:16,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 1026 transitions, 27743 flow [2024-06-27 22:37:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:37:16,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:37:16,084 INFO L175 Difference]: Start difference. First operand has 475 places, 993 transitions, 25408 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:37:16,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 1026 transitions, 27743 flow [2024-06-27 22:37:18,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1026 transitions, 27157 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:18,136 INFO L231 Difference]: Finished difference. Result has 476 places, 993 transitions, 25304 flow [2024-06-27 22:37:18,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24822, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25304, PETRI_PLACES=476, PETRI_TRANSITIONS=993} [2024-06-27 22:37:18,137 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 435 predicate places. [2024-06-27 22:37:18,137 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 993 transitions, 25304 flow [2024-06-27 22:37:18,137 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) [2024-06-27 22:37:18,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:18,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:18,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:37:18,138 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:18,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2009737392, now seen corresponding path program 16 times [2024-06-27 22:37:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:18,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802360896] [2024-06-27 22:37:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:18,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:19,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:19,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802360896] [2024-06-27 22:37:19,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802360896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:19,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:19,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:19,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687481772] [2024-06-27 22:37:19,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:19,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:19,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:19,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:19,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:19,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:19,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 993 transitions, 25304 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) [2024-06-27 22:37:19,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:19,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:19,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:21,883 INFO L124 PetriNetUnfolderBase]: 3308/6062 cut-off events. [2024-06-27 22:37:21,883 INFO L125 PetriNetUnfolderBase]: For 269455/269517 co-relation queries the response was YES. [2024-06-27 22:37:21,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60361 conditions, 6062 events. 3308/6062 cut-off events. For 269455/269517 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 44650 event pairs, 413 based on Foata normal form. 17/5803 useless extension candidates. Maximal degree in co-relation 60135. Up to 3556 conditions per place. [2024-06-27 22:37:21,998 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 581 selfloop transitions, 448 changer transitions 0/1041 dead transitions. [2024-06-27 22:37:21,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 1041 transitions, 28266 flow [2024-06-27 22:37:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:21,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:37:21,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-06-27 22:37:21,999 INFO L175 Difference]: Start difference. First operand has 476 places, 993 transitions, 25304 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:37:21,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 1041 transitions, 28266 flow [2024-06-27 22:37:23,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1041 transitions, 27754 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:23,856 INFO L231 Difference]: Finished difference. Result has 479 places, 998 transitions, 26078 flow [2024-06-27 22:37:23,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=24794, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=443, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26078, PETRI_PLACES=479, PETRI_TRANSITIONS=998} [2024-06-27 22:37:23,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-27 22:37:23,858 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 998 transitions, 26078 flow [2024-06-27 22:37:23,858 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) [2024-06-27 22:37:23,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:23,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:23,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:37:23,858 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:23,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:23,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2009587445, now seen corresponding path program 11 times [2024-06-27 22:37:23,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:23,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363548311] [2024-06-27 22:37:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:23,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:25,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363548311] [2024-06-27 22:37:25,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363548311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:25,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:25,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357488431] [2024-06-27 22:37:25,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:25,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:25,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:25,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:25,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:37:25,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 998 transitions, 26078 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) [2024-06-27 22:37:25,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:25,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:37:25,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:28,443 INFO L124 PetriNetUnfolderBase]: 3703/6651 cut-off events. [2024-06-27 22:37:28,443 INFO L125 PetriNetUnfolderBase]: For 293438/293438 co-relation queries the response was YES. [2024-06-27 22:37:28,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66108 conditions, 6651 events. 3703/6651 cut-off events. For 293438/293438 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 48590 event pairs, 398 based on Foata normal form. 2/6407 useless extension candidates. Maximal degree in co-relation 65880. Up to 3379 conditions per place. [2024-06-27 22:37:28,567 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 741 selfloop transitions, 375 changer transitions 0/1122 dead transitions. [2024-06-27 22:37:28,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 1122 transitions, 30210 flow [2024-06-27 22:37:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 22:37:28,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243243243243243 [2024-06-27 22:37:28,569 INFO L175 Difference]: Start difference. First operand has 479 places, 998 transitions, 26078 flow. Second operand 10 states and 194 transitions. [2024-06-27 22:37:28,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 1122 transitions, 30210 flow [2024-06-27 22:37:30,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1122 transitions, 29259 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:30,768 INFO L231 Difference]: Finished difference. Result has 483 places, 1035 transitions, 26657 flow [2024-06-27 22:37:30,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25131, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26657, PETRI_PLACES=483, PETRI_TRANSITIONS=1035} [2024-06-27 22:37:30,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-27 22:37:30,768 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 1035 transitions, 26657 flow [2024-06-27 22:37:30,769 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) [2024-06-27 22:37:30,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:30,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:30,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:37:30,769 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:30,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2009593397, now seen corresponding path program 16 times [2024-06-27 22:37:30,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:30,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607350330] [2024-06-27 22:37:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:30,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:31,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:31,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607350330] [2024-06-27 22:37:31,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607350330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:31,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:31,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:37:31,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522721757] [2024-06-27 22:37:31,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:31,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:37:31,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:37:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:37:32,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:32,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1035 transitions, 26657 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2024-06-27 22:37:32,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:32,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:32,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:34,330 INFO L124 PetriNetUnfolderBase]: 3524/6502 cut-off events. [2024-06-27 22:37:34,330 INFO L125 PetriNetUnfolderBase]: For 288295/288307 co-relation queries the response was YES. [2024-06-27 22:37:34,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64895 conditions, 6502 events. 3524/6502 cut-off events. For 288295/288307 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 48862 event pairs, 443 based on Foata normal form. 5/6204 useless extension candidates. Maximal degree in co-relation 64666. Up to 4900 conditions per place. [2024-06-27 22:37:34,454 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 829 selfloop transitions, 222 changer transitions 0/1063 dead transitions. [2024-06-27 22:37:34,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1063 transitions, 29001 flow [2024-06-27 22:37:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:37:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:37:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:37:34,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 22:37:34,455 INFO L175 Difference]: Start difference. First operand has 483 places, 1035 transitions, 26657 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:37:34,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1063 transitions, 29001 flow [2024-06-27 22:37:36,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1063 transitions, 28549 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:36,592 INFO L231 Difference]: Finished difference. Result has 485 places, 1035 transitions, 26675 flow [2024-06-27 22:37:36,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=26207, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1035, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=26675, PETRI_PLACES=485, PETRI_TRANSITIONS=1035} [2024-06-27 22:37:36,593 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-27 22:37:36,593 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 1035 transitions, 26675 flow [2024-06-27 22:37:36,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2024-06-27 22:37:36,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:36,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:36,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:37:36,593 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:36,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:36,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2009587662, now seen corresponding path program 17 times [2024-06-27 22:37:36,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:36,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366073049] [2024-06-27 22:37:36,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:36,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:38,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:38,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366073049] [2024-06-27 22:37:38,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366073049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:38,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:38,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:38,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821474529] [2024-06-27 22:37:38,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:38,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:38,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:38,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:38,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 1035 transitions, 26675 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) [2024-06-27 22:37:38,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:38,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:38,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:40,482 INFO L124 PetriNetUnfolderBase]: 3533/6487 cut-off events. [2024-06-27 22:37:40,482 INFO L125 PetriNetUnfolderBase]: For 285683/285695 co-relation queries the response was YES. [2024-06-27 22:37:40,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64419 conditions, 6487 events. 3533/6487 cut-off events. For 285683/285695 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 48435 event pairs, 467 based on Foata normal form. 4/6194 useless extension candidates. Maximal degree in co-relation 64189. Up to 4385 conditions per place. [2024-06-27 22:37:40,607 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 669 selfloop transitions, 395 changer transitions 0/1076 dead transitions. [2024-06-27 22:37:40,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 1076 transitions, 29342 flow [2024-06-27 22:37:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:37:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:37:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 22:37:40,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337837837837838 [2024-06-27 22:37:40,608 INFO L175 Difference]: Start difference. First operand has 485 places, 1035 transitions, 26675 flow. Second operand 8 states and 158 transitions. [2024-06-27 22:37:40,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 1076 transitions, 29342 flow [2024-06-27 22:37:42,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 1076 transitions, 28825 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:42,712 INFO L231 Difference]: Finished difference. Result has 484 places, 1038 transitions, 27082 flow [2024-06-27 22:37:42,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=26160, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1035, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=392, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27082, PETRI_PLACES=484, PETRI_TRANSITIONS=1038} [2024-06-27 22:37:42,713 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-27 22:37:42,713 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 1038 transitions, 27082 flow [2024-06-27 22:37:42,713 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) [2024-06-27 22:37:42,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:42,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:42,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:37:42,714 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:42,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:42,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2009593242, now seen corresponding path program 18 times [2024-06-27 22:37:42,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:42,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912482991] [2024-06-27 22:37:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:42,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:44,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:44,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912482991] [2024-06-27 22:37:44,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912482991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:44,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:44,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:37:44,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221841002] [2024-06-27 22:37:44,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:44,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:37:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:37:44,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:37:44,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:44,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 1038 transitions, 27082 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2024-06-27 22:37:44,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:44,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:44,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:46,673 INFO L124 PetriNetUnfolderBase]: 3544/6505 cut-off events. [2024-06-27 22:37:46,673 INFO L125 PetriNetUnfolderBase]: For 295349/295361 co-relation queries the response was YES. [2024-06-27 22:37:46,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65185 conditions, 6505 events. 3544/6505 cut-off events. For 295349/295361 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 48589 event pairs, 451 based on Foata normal form. 4/6213 useless extension candidates. Maximal degree in co-relation 64956. Up to 3983 conditions per place. [2024-06-27 22:37:46,792 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 630 selfloop transitions, 435 changer transitions 0/1077 dead transitions. [2024-06-27 22:37:46,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1077 transitions, 29955 flow [2024-06-27 22:37:46,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:37:46,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:37:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 22:37:46,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337837837837838 [2024-06-27 22:37:46,794 INFO L175 Difference]: Start difference. First operand has 484 places, 1038 transitions, 27082 flow. Second operand 8 states and 158 transitions. [2024-06-27 22:37:46,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1077 transitions, 29955 flow [2024-06-27 22:37:49,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 1077 transitions, 29111 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:49,038 INFO L231 Difference]: Finished difference. Result has 487 places, 1041 transitions, 27408 flow [2024-06-27 22:37:49,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=26238, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=432, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27408, PETRI_PLACES=487, PETRI_TRANSITIONS=1041} [2024-06-27 22:37:49,039 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-27 22:37:49,039 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 1041 transitions, 27408 flow [2024-06-27 22:37:49,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2024-06-27 22:37:49,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:49,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:49,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:37:49,039 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:49,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:49,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2004225065, now seen corresponding path program 12 times [2024-06-27 22:37:49,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:49,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144275355] [2024-06-27 22:37:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:49,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:50,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:50,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144275355] [2024-06-27 22:37:50,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144275355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:50,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:50,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:50,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259750235] [2024-06-27 22:37:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:50,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:50,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:50,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:37:50,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 1041 transitions, 27408 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) [2024-06-27 22:37:50,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:50,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:37:50,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:53,732 INFO L124 PetriNetUnfolderBase]: 3878/6998 cut-off events. [2024-06-27 22:37:53,732 INFO L125 PetriNetUnfolderBase]: For 314148/314148 co-relation queries the response was YES. [2024-06-27 22:37:53,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69544 conditions, 6998 events. 3878/6998 cut-off events. For 314148/314148 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 51832 event pairs, 413 based on Foata normal form. 2/6731 useless extension candidates. Maximal degree in co-relation 69312. Up to 3520 conditions per place. [2024-06-27 22:37:53,861 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 785 selfloop transitions, 354 changer transitions 0/1145 dead transitions. [2024-06-27 22:37:53,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 1145 transitions, 31318 flow [2024-06-27 22:37:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 22:37:53,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-27 22:37:53,863 INFO L175 Difference]: Start difference. First operand has 487 places, 1041 transitions, 27408 flow. Second operand 10 states and 195 transitions. [2024-06-27 22:37:53,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 1145 transitions, 31318 flow [2024-06-27 22:37:56,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 1145 transitions, 30405 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:56,453 INFO L231 Difference]: Finished difference. Result has 491 places, 1056 transitions, 27492 flow [2024-06-27 22:37:56,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=26499, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27492, PETRI_PLACES=491, PETRI_TRANSITIONS=1056} [2024-06-27 22:37:56,454 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-27 22:37:56,454 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 1056 transitions, 27492 flow [2024-06-27 22:37:56,454 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) [2024-06-27 22:37:56,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:56,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:56,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:37:56,455 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:56,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:56,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2004225282, now seen corresponding path program 19 times [2024-06-27 22:37:56,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:56,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891247778] [2024-06-27 22:37:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:56,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:57,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:57,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891247778] [2024-06-27 22:37:57,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891247778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:57,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:57,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:57,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071070358] [2024-06-27 22:37:57,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:57,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:57,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:57,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:57,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:58,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:58,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1056 transitions, 27492 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) [2024-06-27 22:37:58,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:58,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:58,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:00,672 INFO L124 PetriNetUnfolderBase]: 3708/6820 cut-off events. [2024-06-27 22:38:00,673 INFO L125 PetriNetUnfolderBase]: For 312004/312016 co-relation queries the response was YES. [2024-06-27 22:38:00,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68360 conditions, 6820 events. 3708/6820 cut-off events. For 312004/312016 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 51536 event pairs, 495 based on Foata normal form. 1/6501 useless extension candidates. Maximal degree in co-relation 68127. Up to 4654 conditions per place. [2024-06-27 22:38:00,805 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 747 selfloop transitions, 347 changer transitions 0/1106 dead transitions. [2024-06-27 22:38:00,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1106 transitions, 30430 flow [2024-06-27 22:38:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:38:00,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:38:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:38:00,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 22:38:00,806 INFO L175 Difference]: Start difference. First operand has 491 places, 1056 transitions, 27492 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:38:00,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1106 transitions, 30430 flow [2024-06-27 22:38:03,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 1106 transitions, 29992 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:38:03,023 INFO L231 Difference]: Finished difference. Result has 494 places, 1059 transitions, 27884 flow [2024-06-27 22:38:03,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=27054, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27884, PETRI_PLACES=494, PETRI_TRANSITIONS=1059} [2024-06-27 22:38:03,024 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 453 predicate places. [2024-06-27 22:38:03,024 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 1059 transitions, 27884 flow [2024-06-27 22:38:03,024 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) [2024-06-27 22:38:03,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:03,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:03,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:38:03,025 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:03,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:03,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2004015815, now seen corresponding path program 13 times [2024-06-27 22:38:03,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:03,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176673469] [2024-06-27 22:38:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:03,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:04,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:04,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176673469] [2024-06-27 22:38:04,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176673469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:04,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:04,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:04,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781190682] [2024-06-27 22:38:04,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:04,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:04,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:05,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:38:05,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 1059 transitions, 27884 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:05,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:05,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:38:05,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:08,109 INFO L124 PetriNetUnfolderBase]: 3917/7067 cut-off events. [2024-06-27 22:38:08,110 INFO L125 PetriNetUnfolderBase]: For 330155/330155 co-relation queries the response was YES. [2024-06-27 22:38:08,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70494 conditions, 7067 events. 3917/7067 cut-off events. For 330155/330155 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 52387 event pairs, 417 based on Foata normal form. 2/6797 useless extension candidates. Maximal degree in co-relation 70261. Up to 3561 conditions per place. [2024-06-27 22:38:08,236 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 763 selfloop transitions, 376 changer transitions 0/1145 dead transitions. [2024-06-27 22:38:08,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 1145 transitions, 31582 flow [2024-06-27 22:38:08,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 22:38:08,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 22:38:08,237 INFO L175 Difference]: Start difference. First operand has 494 places, 1059 transitions, 27884 flow. Second operand 10 states and 192 transitions. [2024-06-27 22:38:08,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 1145 transitions, 31582 flow [2024-06-27 22:38:10,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 1145 transitions, 30826 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 22:38:10,995 INFO L231 Difference]: Finished difference. Result has 499 places, 1068 transitions, 28164 flow [2024-06-27 22:38:10,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=27134, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28164, PETRI_PLACES=499, PETRI_TRANSITIONS=1068} [2024-06-27 22:38:10,996 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-27 22:38:10,996 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 1068 transitions, 28164 flow [2024-06-27 22:38:10,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:10,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:10,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:10,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:38:10,997 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:10,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:10,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2004023472, now seen corresponding path program 20 times [2024-06-27 22:38:10,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:10,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714581551] [2024-06-27 22:38:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:10,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:12,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714581551] [2024-06-27 22:38:12,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714581551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:12,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:12,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:38:12,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805998169] [2024-06-27 22:38:12,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:12,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:38:12,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:12,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:38:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:38:12,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:12,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 1068 transitions, 28164 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) [2024-06-27 22:38:12,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:12,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:12,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:15,339 INFO L124 PetriNetUnfolderBase]: 3731/6865 cut-off events. [2024-06-27 22:38:15,339 INFO L125 PetriNetUnfolderBase]: For 327048/327060 co-relation queries the response was YES. [2024-06-27 22:38:15,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69152 conditions, 6865 events. 3731/6865 cut-off events. For 327048/327060 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 52007 event pairs, 498 based on Foata normal form. 1/6543 useless extension candidates. Maximal degree in co-relation 68916. Up to 4690 conditions per place. [2024-06-27 22:38:15,490 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 740 selfloop transitions, 359 changer transitions 0/1111 dead transitions. [2024-06-27 22:38:15,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1111 transitions, 30986 flow [2024-06-27 22:38:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:38:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:38:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:38:15,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:38:15,492 INFO L175 Difference]: Start difference. First operand has 499 places, 1068 transitions, 28164 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:38:15,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1111 transitions, 30986 flow [2024-06-27 22:38:18,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 1111 transitions, 30387 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:38:18,081 INFO L231 Difference]: Finished difference. Result has 503 places, 1071 transitions, 28425 flow [2024-06-27 22:38:18,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=27567, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=356, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=28425, PETRI_PLACES=503, PETRI_TRANSITIONS=1071} [2024-06-27 22:38:18,082 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-27 22:38:18,082 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 1071 transitions, 28425 flow [2024-06-27 22:38:18,082 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) [2024-06-27 22:38:18,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:18,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:18,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:38:18,082 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:18,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:18,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2004023255, now seen corresponding path program 14 times [2024-06-27 22:38:18,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:18,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315744289] [2024-06-27 22:38:18,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:18,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:19,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:19,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315744289] [2024-06-27 22:38:19,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315744289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:19,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:19,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:38:19,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173803532] [2024-06-27 22:38:19,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:19,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:38:19,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:38:19,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:38:19,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:38:19,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 1071 transitions, 28425 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) [2024-06-27 22:38:19,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:19,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:38:19,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:22,885 INFO L124 PetriNetUnfolderBase]: 4062/7320 cut-off events. [2024-06-27 22:38:22,886 INFO L125 PetriNetUnfolderBase]: For 339266/339266 co-relation queries the response was YES. [2024-06-27 22:38:22,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72900 conditions, 7320 events. 4062/7320 cut-off events. For 339266/339266 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 54555 event pairs, 292 based on Foata normal form. 2/7043 useless extension candidates. Maximal degree in co-relation 72663. Up to 5025 conditions per place. [2024-06-27 22:38:23,016 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 922 selfloop transitions, 307 changer transitions 0/1235 dead transitions. [2024-06-27 22:38:23,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 1235 transitions, 33202 flow [2024-06-27 22:38:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:38:23,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 22:38:23,018 INFO L175 Difference]: Start difference. First operand has 503 places, 1071 transitions, 28425 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:38:23,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 1235 transitions, 33202 flow [2024-06-27 22:38:25,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1235 transitions, 32204 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 22:38:25,574 INFO L231 Difference]: Finished difference. Result has 510 places, 1188 transitions, 30503 flow [2024-06-27 22:38:25,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=27435, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=769, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=30503, PETRI_PLACES=510, PETRI_TRANSITIONS=1188} [2024-06-27 22:38:25,575 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-27 22:38:25,575 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 1188 transitions, 30503 flow [2024-06-27 22:38:25,575 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) [2024-06-27 22:38:25,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:25,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:25,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:38:25,576 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:25,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1991748255, now seen corresponding path program 1 times [2024-06-27 22:38:25,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:25,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541391228] [2024-06-27 22:38:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:25,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:27,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:27,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541391228] [2024-06-27 22:38:27,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541391228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:27,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:27,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:27,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137871020] [2024-06-27 22:38:27,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:27,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:27,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:27,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:38:27,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 1188 transitions, 30503 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:38:27,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:27,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:38:27,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:30,581 INFO L124 PetriNetUnfolderBase]: 4219/7626 cut-off events. [2024-06-27 22:38:30,582 INFO L125 PetriNetUnfolderBase]: For 366654/366654 co-relation queries the response was YES. [2024-06-27 22:38:30,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76925 conditions, 7626 events. 4219/7626 cut-off events. For 366654/366654 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 57555 event pairs, 685 based on Foata normal form. 2/7339 useless extension candidates. Maximal degree in co-relation 76684. Up to 4274 conditions per place. [2024-06-27 22:38:30,743 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 965 selfloop transitions, 334 changer transitions 0/1305 dead transitions. [2024-06-27 22:38:30,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 1305 transitions, 35014 flow [2024-06-27 22:38:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:38:30,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 22:38:30,744 INFO L175 Difference]: Start difference. First operand has 510 places, 1188 transitions, 30503 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:38:30,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 1305 transitions, 35014 flow [2024-06-27 22:38:34,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1305 transitions, 34830 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-27 22:38:34,062 INFO L231 Difference]: Finished difference. Result has 521 places, 1211 transitions, 31876 flow [2024-06-27 22:38:34,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=30329, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=31876, PETRI_PLACES=521, PETRI_TRANSITIONS=1211} [2024-06-27 22:38:34,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-27 22:38:34,064 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 1211 transitions, 31876 flow [2024-06-27 22:38:34,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:38:34,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:34,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:34,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:38:34,064 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:34,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:34,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1933655805, now seen corresponding path program 2 times [2024-06-27 22:38:34,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:34,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865099380] [2024-06-27 22:38:34,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:34,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:35,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:35,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865099380] [2024-06-27 22:38:35,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865099380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:35,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:35,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585517497] [2024-06-27 22:38:35,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:35,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:35,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:35,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:35,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:38:35,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 1211 transitions, 31876 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:38:35,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:35,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:38:35,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:39,367 INFO L124 PetriNetUnfolderBase]: 4272/7745 cut-off events. [2024-06-27 22:38:39,367 INFO L125 PetriNetUnfolderBase]: For 390959/390959 co-relation queries the response was YES. [2024-06-27 22:38:39,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78905 conditions, 7745 events. 4272/7745 cut-off events. For 390959/390959 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 58837 event pairs, 710 based on Foata normal form. 2/7450 useless extension candidates. Maximal degree in co-relation 78660. Up to 4959 conditions per place. [2024-06-27 22:38:39,516 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 950 selfloop transitions, 336 changer transitions 0/1292 dead transitions. [2024-06-27 22:38:39,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1292 transitions, 35845 flow [2024-06-27 22:38:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:38:39,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 22:38:39,523 INFO L175 Difference]: Start difference. First operand has 521 places, 1211 transitions, 31876 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:38:39,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1292 transitions, 35845 flow [2024-06-27 22:38:42,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 1292 transitions, 35513 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-27 22:38:42,684 INFO L231 Difference]: Finished difference. Result has 531 places, 1219 transitions, 32673 flow [2024-06-27 22:38:42,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=31552, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=876, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=32673, PETRI_PLACES=531, PETRI_TRANSITIONS=1219} [2024-06-27 22:38:42,685 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 490 predicate places. [2024-06-27 22:38:42,685 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 1219 transitions, 32673 flow [2024-06-27 22:38:42,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:38:42,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:42,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:42,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:38:42,685 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:42,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:42,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1228407103, now seen corresponding path program 1 times [2024-06-27 22:38:42,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:42,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280388931] [2024-06-27 22:38:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:42,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:44,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:44,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280388931] [2024-06-27 22:38:44,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280388931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:44,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:44,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:44,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775437873] [2024-06-27 22:38:44,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:44,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:44,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:44,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:44,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:44,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:38:44,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 1219 transitions, 32673 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:38:44,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:44,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:38:44,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:47,951 INFO L124 PetriNetUnfolderBase]: 4350/7917 cut-off events. [2024-06-27 22:38:47,951 INFO L125 PetriNetUnfolderBase]: For 414028/414028 co-relation queries the response was YES. [2024-06-27 22:38:48,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81458 conditions, 7917 events. 4350/7917 cut-off events. For 414028/414028 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 60645 event pairs, 737 based on Foata normal form. 2/7605 useless extension candidates. Maximal degree in co-relation 81208. Up to 6051 conditions per place. [2024-06-27 22:38:48,128 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 1074 selfloop transitions, 220 changer transitions 0/1300 dead transitions. [2024-06-27 22:38:48,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 1300 transitions, 36580 flow [2024-06-27 22:38:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 22:38:48,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 22:38:48,129 INFO L175 Difference]: Start difference. First operand has 531 places, 1219 transitions, 32673 flow. Second operand 11 states and 194 transitions. [2024-06-27 22:38:48,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 1300 transitions, 36580 flow [2024-06-27 22:38:51,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 1300 transitions, 36041 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 22:38:51,841 INFO L231 Difference]: Finished difference. Result has 538 places, 1239 transitions, 33132 flow [2024-06-27 22:38:51,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=32134, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1001, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=33132, PETRI_PLACES=538, PETRI_TRANSITIONS=1239} [2024-06-27 22:38:51,841 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-27 22:38:51,842 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 1239 transitions, 33132 flow [2024-06-27 22:38:51,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:38:51,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:51,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:51,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:38:51,843 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:51,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash 953246257, now seen corresponding path program 3 times [2024-06-27 22:38:51,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:51,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80006339] [2024-06-27 22:38:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:51,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:53,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:53,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80006339] [2024-06-27 22:38:53,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80006339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:53,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:53,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:53,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770260559] [2024-06-27 22:38:53,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:53,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:53,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:53,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:53,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:38:53,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1239 transitions, 33132 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:38:53,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:53,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:38:53,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:56,989 INFO L124 PetriNetUnfolderBase]: 4380/7980 cut-off events. [2024-06-27 22:38:56,989 INFO L125 PetriNetUnfolderBase]: For 414030/414030 co-relation queries the response was YES. [2024-06-27 22:38:57,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83208 conditions, 7980 events. 4380/7980 cut-off events. For 414030/414030 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 61317 event pairs, 754 based on Foata normal form. 2/7665 useless extension candidates. Maximal degree in co-relation 82955. Up to 6238 conditions per place. [2024-06-27 22:38:57,141 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 1100 selfloop transitions, 191 changer transitions 0/1297 dead transitions. [2024-06-27 22:38:57,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1297 transitions, 36676 flow [2024-06-27 22:38:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:38:57,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 22:38:57,142 INFO L175 Difference]: Start difference. First operand has 538 places, 1239 transitions, 33132 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:38:57,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 1297 transitions, 36676 flow [2024-06-27 22:39:00,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 1297 transitions, 36588 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:39:00,639 INFO L231 Difference]: Finished difference. Result has 543 places, 1242 transitions, 33545 flow [2024-06-27 22:39:00,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=33044, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1049, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=33545, PETRI_PLACES=543, PETRI_TRANSITIONS=1242} [2024-06-27 22:39:00,640 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 502 predicate places. [2024-06-27 22:39:00,640 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 1242 transitions, 33545 flow [2024-06-27 22:39:00,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:39:00,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:00,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:00,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:39:00,641 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:00,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1933535835, now seen corresponding path program 4 times [2024-06-27 22:39:00,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:00,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614409074] [2024-06-27 22:39:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:00,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:02,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:02,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614409074] [2024-06-27 22:39:02,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614409074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:02,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:02,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:02,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630361971] [2024-06-27 22:39:02,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:02,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:02,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:02,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:02,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:02,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:39:02,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 1242 transitions, 33545 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:39:02,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:02,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:39:02,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:06,023 INFO L124 PetriNetUnfolderBase]: 4384/7943 cut-off events. [2024-06-27 22:39:06,023 INFO L125 PetriNetUnfolderBase]: For 413705/413705 co-relation queries the response was YES. [2024-06-27 22:39:06,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83599 conditions, 7943 events. 4384/7943 cut-off events. For 413705/413705 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 60544 event pairs, 741 based on Foata normal form. 2/7643 useless extension candidates. Maximal degree in co-relation 83343. Up to 5303 conditions per place. [2024-06-27 22:39:06,204 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 953 selfloop transitions, 345 changer transitions 0/1304 dead transitions. [2024-06-27 22:39:06,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 1304 transitions, 36991 flow [2024-06-27 22:39:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:39:06,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:39:06,205 INFO L175 Difference]: Start difference. First operand has 543 places, 1242 transitions, 33545 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:39:06,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 1304 transitions, 36991 flow [2024-06-27 22:39:09,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 1304 transitions, 36688 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 22:39:09,819 INFO L231 Difference]: Finished difference. Result has 550 places, 1247 transitions, 34108 flow [2024-06-27 22:39:09,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=33246, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=897, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=34108, PETRI_PLACES=550, PETRI_TRANSITIONS=1247} [2024-06-27 22:39:09,820 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 509 predicate places. [2024-06-27 22:39:09,820 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 1247 transitions, 34108 flow [2024-06-27 22:39:09,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:39:09,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:09,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:09,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:39:09,821 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:09,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:09,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1463687147, now seen corresponding path program 2 times [2024-06-27 22:39:09,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:09,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250834542] [2024-06-27 22:39:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:11,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:11,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250834542] [2024-06-27 22:39:11,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250834542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:11,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:11,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27775782] [2024-06-27 22:39:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:11,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:11,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:11,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:11,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:39:11,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 1247 transitions, 34108 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:39:11,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:11,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:39:11,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:15,371 INFO L124 PetriNetUnfolderBase]: 4410/8042 cut-off events. [2024-06-27 22:39:15,372 INFO L125 PetriNetUnfolderBase]: For 426474/426474 co-relation queries the response was YES. [2024-06-27 22:39:15,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84918 conditions, 8042 events. 4410/8042 cut-off events. For 426474/426474 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 61922 event pairs, 750 based on Foata normal form. 2/7725 useless extension candidates. Maximal degree in co-relation 84658. Up to 4530 conditions per place. [2024-06-27 22:39:15,539 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 841 selfloop transitions, 450 changer transitions 0/1297 dead transitions. [2024-06-27 22:39:15,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 1297 transitions, 37378 flow [2024-06-27 22:39:15,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:15,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:39:15,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 22:39:15,540 INFO L175 Difference]: Start difference. First operand has 550 places, 1247 transitions, 34108 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:39:15,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 1297 transitions, 37378 flow [2024-06-27 22:39:19,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1297 transitions, 36681 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:19,087 INFO L231 Difference]: Finished difference. Result has 553 places, 1250 transitions, 34420 flow [2024-06-27 22:39:19,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=33411, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=447, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=797, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=34420, PETRI_PLACES=553, PETRI_TRANSITIONS=1250} [2024-06-27 22:39:19,088 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 512 predicate places. [2024-06-27 22:39:19,088 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 1250 transitions, 34420 flow [2024-06-27 22:39:19,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:39:19,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:19,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:19,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:39:19,089 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:19,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1463680637, now seen corresponding path program 3 times [2024-06-27 22:39:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711955720] [2024-06-27 22:39:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:19,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:20,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:20,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711955720] [2024-06-27 22:39:20,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711955720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:20,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:20,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:20,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133460037] [2024-06-27 22:39:20,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:20,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:20,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:20,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:20,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:39:20,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 1250 transitions, 34420 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:39:20,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:20,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:39:20,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:24,608 INFO L124 PetriNetUnfolderBase]: 4442/8092 cut-off events. [2024-06-27 22:39:24,609 INFO L125 PetriNetUnfolderBase]: For 440221/440221 co-relation queries the response was YES. [2024-06-27 22:39:24,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86226 conditions, 8092 events. 4442/8092 cut-off events. For 440221/440221 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 62252 event pairs, 752 based on Foata normal form. 2/7775 useless extension candidates. Maximal degree in co-relation 85966. Up to 4511 conditions per place. [2024-06-27 22:39:24,800 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 846 selfloop transitions, 453 changer transitions 0/1305 dead transitions. [2024-06-27 22:39:24,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 1305 transitions, 37765 flow [2024-06-27 22:39:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 22:39:24,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 22:39:24,801 INFO L175 Difference]: Start difference. First operand has 553 places, 1250 transitions, 34420 flow. Second operand 11 states and 194 transitions. [2024-06-27 22:39:24,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 1305 transitions, 37765 flow [2024-06-27 22:39:28,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 1305 transitions, 36751 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-27 22:39:28,567 INFO L231 Difference]: Finished difference. Result has 555 places, 1255 transitions, 34459 flow [2024-06-27 22:39:28,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=33406, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=799, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=34459, PETRI_PLACES=555, PETRI_TRANSITIONS=1255} [2024-06-27 22:39:28,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 514 predicate places. [2024-06-27 22:39:28,568 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 1255 transitions, 34459 flow [2024-06-27 22:39:28,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:39:28,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:28,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:28,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:39:28,568 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:28,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:28,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1463680451, now seen corresponding path program 5 times [2024-06-27 22:39:28,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:28,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134847056] [2024-06-27 22:39:28,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:28,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:30,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:30,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134847056] [2024-06-27 22:39:30,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134847056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:30,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:30,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:30,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878406208] [2024-06-27 22:39:30,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:30,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:30,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:30,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:30,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:39:30,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 1255 transitions, 34459 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:39:30,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:30,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:39:30,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:33,992 INFO L124 PetriNetUnfolderBase]: 4461/8098 cut-off events. [2024-06-27 22:39:33,992 INFO L125 PetriNetUnfolderBase]: For 442728/442728 co-relation queries the response was YES. [2024-06-27 22:39:34,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86473 conditions, 8098 events. 4461/8098 cut-off events. For 442728/442728 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 62105 event pairs, 761 based on Foata normal form. 2/7790 useless extension candidates. Maximal degree in co-relation 86211. Up to 6075 conditions per place. [2024-06-27 22:39:34,171 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 990 selfloop transitions, 297 changer transitions 0/1293 dead transitions. [2024-06-27 22:39:34,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 1293 transitions, 37488 flow [2024-06-27 22:39:34,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:39:34,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:39:34,172 INFO L175 Difference]: Start difference. First operand has 555 places, 1255 transitions, 34459 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:39:34,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 1293 transitions, 37488 flow [2024-06-27 22:39:38,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 1293 transitions, 36909 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 22:39:38,303 INFO L231 Difference]: Finished difference. Result has 559 places, 1257 transitions, 34569 flow [2024-06-27 22:39:38,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=33880, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=958, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=34569, PETRI_PLACES=559, PETRI_TRANSITIONS=1257} [2024-06-27 22:39:38,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 518 predicate places. [2024-06-27 22:39:38,304 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 1257 transitions, 34569 flow [2024-06-27 22:39:38,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:39:38,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:38,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:38,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:39:38,305 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:38,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1463507657, now seen corresponding path program 4 times [2024-06-27 22:39:38,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:38,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543718962] [2024-06-27 22:39:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:38,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:39,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:39,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543718962] [2024-06-27 22:39:39,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543718962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:39,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:39,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:39:39,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270585226] [2024-06-27 22:39:39,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:39,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:39:39,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:39:39,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:39:40,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:39:40,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 1257 transitions, 34569 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:40,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:40,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:39:40,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:43,712 INFO L124 PetriNetUnfolderBase]: 4487/8166 cut-off events. [2024-06-27 22:39:43,713 INFO L125 PetriNetUnfolderBase]: For 440823/440823 co-relation queries the response was YES. [2024-06-27 22:39:43,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87698 conditions, 8166 events. 4487/8166 cut-off events. For 440823/440823 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 62880 event pairs, 788 based on Foata normal form. 1/7846 useless extension candidates. Maximal degree in co-relation 87434. Up to 6653 conditions per place. [2024-06-27 22:39:43,865 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 1108 selfloop transitions, 199 changer transitions 0/1313 dead transitions. [2024-06-27 22:39:43,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 1313 transitions, 38119 flow [2024-06-27 22:39:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:39:43,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:39:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:39:43,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:39:43,866 INFO L175 Difference]: Start difference. First operand has 559 places, 1257 transitions, 34569 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:39:43,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 1313 transitions, 38119 flow [2024-06-27 22:39:47,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 1313 transitions, 37472 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:47,617 INFO L231 Difference]: Finished difference. Result has 562 places, 1272 transitions, 34776 flow [2024-06-27 22:39:47,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=33922, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1059, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34776, PETRI_PLACES=562, PETRI_TRANSITIONS=1272} [2024-06-27 22:39:47,618 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 521 predicate places. [2024-06-27 22:39:47,618 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 1272 transitions, 34776 flow [2024-06-27 22:39:47,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:47,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:47,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:47,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:39:47,618 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:47,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:47,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1463507471, now seen corresponding path program 6 times [2024-06-27 22:39:47,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:47,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84867612] [2024-06-27 22:39:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:47,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:49,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:49,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84867612] [2024-06-27 22:39:49,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84867612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:49,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:49,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:39:49,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532800300] [2024-06-27 22:39:49,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:49,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:39:49,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:49,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:39:49,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:39:49,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:39:49,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 1272 transitions, 34776 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:49,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:49,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:39:49,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:52,895 INFO L124 PetriNetUnfolderBase]: 4506/8196 cut-off events. [2024-06-27 22:39:52,895 INFO L125 PetriNetUnfolderBase]: For 446660/446660 co-relation queries the response was YES. [2024-06-27 22:39:53,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88287 conditions, 8196 events. 4506/8196 cut-off events. For 446660/446660 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 63017 event pairs, 769 based on Foata normal form. 2/7880 useless extension candidates. Maximal degree in co-relation 88020. Up to 6046 conditions per place. [2024-06-27 22:39:53,074 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 998 selfloop transitions, 309 changer transitions 0/1313 dead transitions. [2024-06-27 22:39:53,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 1313 transitions, 37977 flow [2024-06-27 22:39:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:39:53,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:39:53,075 INFO L175 Difference]: Start difference. First operand has 562 places, 1272 transitions, 34776 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:39:53,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 1313 transitions, 37977 flow [2024-06-27 22:39:56,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 1313 transitions, 37663 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-27 22:39:57,019 INFO L231 Difference]: Finished difference. Result has 569 places, 1275 transitions, 35218 flow [2024-06-27 22:39:57,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=34462, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=963, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35218, PETRI_PLACES=569, PETRI_TRANSITIONS=1275} [2024-06-27 22:39:57,020 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 528 predicate places. [2024-06-27 22:39:57,020 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 1275 transitions, 35218 flow [2024-06-27 22:39:57,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:57,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:57,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:57,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:39:57,021 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:57,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1463502821, now seen corresponding path program 7 times [2024-06-27 22:39:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:57,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500881224] [2024-06-27 22:39:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:57,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:58,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:58,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500881224] [2024-06-27 22:39:58,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500881224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:58,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:58,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:39:58,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907055657] [2024-06-27 22:39:58,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:58,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:39:58,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:58,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:39:58,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:39:58,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:39:58,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 1275 transitions, 35218 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:58,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:58,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:39:58,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:02,647 INFO L124 PetriNetUnfolderBase]: 4537/8271 cut-off events. [2024-06-27 22:40:02,647 INFO L125 PetriNetUnfolderBase]: For 459096/459096 co-relation queries the response was YES. [2024-06-27 22:40:02,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89762 conditions, 8271 events. 4537/8271 cut-off events. For 459096/459096 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 63887 event pairs, 771 based on Foata normal form. 2/7949 useless extension candidates. Maximal degree in co-relation 89492. Up to 5959 conditions per place. [2024-06-27 22:40:02,820 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 1006 selfloop transitions, 311 changer transitions 0/1323 dead transitions. [2024-06-27 22:40:02,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1323 transitions, 38655 flow [2024-06-27 22:40:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:02,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:40:02,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:40:02,822 INFO L175 Difference]: Start difference. First operand has 569 places, 1275 transitions, 35218 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:40:02,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1323 transitions, 38655 flow [2024-06-27 22:40:06,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 1323 transitions, 38035 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:40:06,822 INFO L231 Difference]: Finished difference. Result has 573 places, 1281 transitions, 35441 flow [2024-06-27 22:40:06,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=34598, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=965, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35441, PETRI_PLACES=573, PETRI_TRANSITIONS=1281} [2024-06-27 22:40:06,823 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 532 predicate places. [2024-06-27 22:40:06,823 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 1281 transitions, 35441 flow [2024-06-27 22:40:06,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:06,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:06,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:06,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:40:06,824 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:06,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:06,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1458918851, now seen corresponding path program 8 times [2024-06-27 22:40:06,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:06,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835960652] [2024-06-27 22:40:06,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:06,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:08,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:08,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835960652] [2024-06-27 22:40:08,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835960652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:08,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:08,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:08,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146437847] [2024-06-27 22:40:08,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:08,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:08,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:08,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:08,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:08,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:40:08,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 1281 transitions, 35441 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:40:08,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:08,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:40:08,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:12,370 INFO L124 PetriNetUnfolderBase]: 4608/8436 cut-off events. [2024-06-27 22:40:12,371 INFO L125 PetriNetUnfolderBase]: For 483564/483564 co-relation queries the response was YES. [2024-06-27 22:40:12,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91780 conditions, 8436 events. 4608/8436 cut-off events. For 483564/483564 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 65741 event pairs, 833 based on Foata normal form. 2/8100 useless extension candidates. Maximal degree in co-relation 91508. Up to 6682 conditions per place. [2024-06-27 22:40:12,563 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1156 selfloop transitions, 176 changer transitions 0/1338 dead transitions. [2024-06-27 22:40:12,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 1338 transitions, 39241 flow [2024-06-27 22:40:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:40:12,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 22:40:12,565 INFO L175 Difference]: Start difference. First operand has 573 places, 1281 transitions, 35441 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:40:12,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 1338 transitions, 39241 flow [2024-06-27 22:40:17,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 1338 transitions, 38686 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-06-27 22:40:17,106 INFO L231 Difference]: Finished difference. Result has 580 places, 1287 transitions, 35536 flow [2024-06-27 22:40:17,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=34962, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=35536, PETRI_PLACES=580, PETRI_TRANSITIONS=1287} [2024-06-27 22:40:17,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 539 predicate places. [2024-06-27 22:40:17,107 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 1287 transitions, 35536 flow [2024-06-27 22:40:17,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:40:17,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:17,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:17,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:40:17,107 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:17,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:17,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1459039007, now seen corresponding path program 5 times [2024-06-27 22:40:17,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:17,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606241571] [2024-06-27 22:40:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:17,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:18,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:18,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606241571] [2024-06-27 22:40:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606241571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:18,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:18,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:18,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904890086] [2024-06-27 22:40:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:18,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:18,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:18,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:40:18,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 1287 transitions, 35536 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:40:18,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:18,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:40:18,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:23,036 INFO L124 PetriNetUnfolderBase]: 4674/8572 cut-off events. [2024-06-27 22:40:23,036 INFO L125 PetriNetUnfolderBase]: For 490703/490703 co-relation queries the response was YES. [2024-06-27 22:40:23,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93123 conditions, 8572 events. 4674/8572 cut-off events. For 490703/490703 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 67077 event pairs, 815 based on Foata normal form. 2/8227 useless extension candidates. Maximal degree in co-relation 92847. Up to 4685 conditions per place. [2024-06-27 22:40:23,240 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 878 selfloop transitions, 473 changer transitions 0/1357 dead transitions. [2024-06-27 22:40:23,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 1357 transitions, 39549 flow [2024-06-27 22:40:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 22:40:23,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-27 22:40:23,241 INFO L175 Difference]: Start difference. First operand has 580 places, 1287 transitions, 35536 flow. Second operand 11 states and 197 transitions. [2024-06-27 22:40:23,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 1357 transitions, 39549 flow [2024-06-27 22:40:28,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 1357 transitions, 39328 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 22:40:28,484 INFO L231 Difference]: Finished difference. Result has 585 places, 1295 transitions, 36437 flow [2024-06-27 22:40:28,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=35315, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=469, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=818, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=36437, PETRI_PLACES=585, PETRI_TRANSITIONS=1295} [2024-06-27 22:40:28,485 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 544 predicate places. [2024-06-27 22:40:28,485 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 1295 transitions, 36437 flow [2024-06-27 22:40:28,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:40:28,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:28,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:28,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:40:28,486 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:28,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:28,486 INFO L85 PathProgramCache]: Analyzing trace with hash 753910275, now seen corresponding path program 9 times [2024-06-27 22:40:28,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:28,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940104670] [2024-06-27 22:40:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:28,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:30,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:30,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940104670] [2024-06-27 22:40:30,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940104670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:30,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:30,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:30,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450717927] [2024-06-27 22:40:30,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:30,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:30,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:30,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:30,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:40:30,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 1295 transitions, 36437 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:40:30,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:30,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:40:30,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:34,812 INFO L124 PetriNetUnfolderBase]: 4693/8581 cut-off events. [2024-06-27 22:40:34,812 INFO L125 PetriNetUnfolderBase]: For 505651/505651 co-relation queries the response was YES. [2024-06-27 22:40:34,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94955 conditions, 8581 events. 4693/8581 cut-off events. For 505651/505651 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 66951 event pairs, 873 based on Foata normal form. 2/8242 useless extension candidates. Maximal degree in co-relation 94677. Up to 7055 conditions per place. [2024-06-27 22:40:34,987 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1155 selfloop transitions, 179 changer transitions 0/1340 dead transitions. [2024-06-27 22:40:34,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 1340 transitions, 39698 flow [2024-06-27 22:40:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:40:34,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 22:40:34,988 INFO L175 Difference]: Start difference. First operand has 585 places, 1295 transitions, 36437 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:40:34,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 1340 transitions, 39698 flow [2024-06-27 22:40:39,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 1340 transitions, 39143 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:40:39,449 INFO L231 Difference]: Finished difference. Result has 589 places, 1297 transitions, 36311 flow [2024-06-27 22:40:39,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=35884, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36311, PETRI_PLACES=589, PETRI_TRANSITIONS=1297} [2024-06-27 22:40:39,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 548 predicate places. [2024-06-27 22:40:39,450 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 1297 transitions, 36311 flow [2024-06-27 22:40:39,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:40:39,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:39,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:39,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:40:39,453 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:39,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:39,453 INFO L85 PathProgramCache]: Analyzing trace with hash 753905625, now seen corresponding path program 10 times [2024-06-27 22:40:39,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:39,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128772360] [2024-06-27 22:40:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:39,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:41,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:41,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128772360] [2024-06-27 22:40:41,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128772360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:41,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:41,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:41,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367226594] [2024-06-27 22:40:41,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:41,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:41,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:41,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:41,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:41,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:40:41,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 1297 transitions, 36311 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:40:41,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:41,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:40:41,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:45,902 INFO L124 PetriNetUnfolderBase]: 4690/8570 cut-off events. [2024-06-27 22:40:45,903 INFO L125 PetriNetUnfolderBase]: For 485571/485571 co-relation queries the response was YES. [2024-06-27 22:40:46,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94830 conditions, 8570 events. 4690/8570 cut-off events. For 485571/485571 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 66852 event pairs, 860 based on Foata normal form. 2/8233 useless extension candidates. Maximal degree in co-relation 94549. Up to 6987 conditions per place. [2024-06-27 22:40:46,102 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1161 selfloop transitions, 178 changer transitions 0/1345 dead transitions. [2024-06-27 22:40:46,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 1345 transitions, 39675 flow [2024-06-27 22:40:46,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:46,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:40:46,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:40:46,104 INFO L175 Difference]: Start difference. First operand has 589 places, 1297 transitions, 36311 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:40:46,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 1345 transitions, 39675 flow [2024-06-27 22:40:50,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 1345 transitions, 39323 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:40:50,462 INFO L231 Difference]: Finished difference. Result has 594 places, 1298 transitions, 36380 flow [2024-06-27 22:40:50,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=35959, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36380, PETRI_PLACES=594, PETRI_TRANSITIONS=1298} [2024-06-27 22:40:50,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 553 predicate places. [2024-06-27 22:40:50,463 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 1298 transitions, 36380 flow [2024-06-27 22:40:50,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:40:50,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:50,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:50,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:40:50,464 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:50,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:50,464 INFO L85 PathProgramCache]: Analyzing trace with hash -120545021, now seen corresponding path program 11 times [2024-06-27 22:40:50,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:50,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127496800] [2024-06-27 22:40:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:50,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:52,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:52,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127496800] [2024-06-27 22:40:52,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127496800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:52,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:52,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:52,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102313390] [2024-06-27 22:40:52,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:52,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:52,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:52,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:52,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:52,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:40:52,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 1298 transitions, 36380 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:40:52,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:52,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:40:52,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:57,259 INFO L124 PetriNetUnfolderBase]: 4747/8715 cut-off events. [2024-06-27 22:40:57,259 INFO L125 PetriNetUnfolderBase]: For 505370/505370 co-relation queries the response was YES. [2024-06-27 22:40:57,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96363 conditions, 8715 events. 4747/8715 cut-off events. For 505370/505370 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 68503 event pairs, 847 based on Foata normal form. 2/8365 useless extension candidates. Maximal degree in co-relation 96080. Up to 6852 conditions per place. [2024-06-27 22:40:57,436 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1156 selfloop transitions, 195 changer transitions 0/1357 dead transitions. [2024-06-27 22:40:57,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 1357 transitions, 40159 flow [2024-06-27 22:40:57,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 22:40:57,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-27 22:40:57,437 INFO L175 Difference]: Start difference. First operand has 594 places, 1298 transitions, 36380 flow. Second operand 10 states and 187 transitions. [2024-06-27 22:40:57,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 1357 transitions, 40159 flow [2024-06-27 22:41:01,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 1357 transitions, 39766 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 22:41:01,756 INFO L231 Difference]: Finished difference. Result has 599 places, 1303 transitions, 36605 flow [2024-06-27 22:41:01,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=35987, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36605, PETRI_PLACES=599, PETRI_TRANSITIONS=1303} [2024-06-27 22:41:01,757 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 558 predicate places. [2024-06-27 22:41:01,757 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 1303 transitions, 36605 flow [2024-06-27 22:41:01,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:41:01,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:01,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:01,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:41:01,758 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:01,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:01,758 INFO L85 PathProgramCache]: Analyzing trace with hash -120424865, now seen corresponding path program 6 times [2024-06-27 22:41:01,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:01,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386518902] [2024-06-27 22:41:01,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:01,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:03,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:03,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386518902] [2024-06-27 22:41:03,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386518902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:03,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:03,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:03,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938625453] [2024-06-27 22:41:03,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:03,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:03,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:03,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 22:41:03,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 1303 transitions, 36605 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 22:41:03,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:03,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 22:41:03,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand