./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:15:12,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:15:12,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:15:12,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:15:12,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:15:12,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:15:12,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:15:12,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:15:12,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:15:12,711 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:15:12,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:15:12,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:15:12,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:15:12,725 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:15:12,725 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:15:12,726 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:15:12,726 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:15:12,727 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:15:12,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:15:12,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:15:12,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:15:12,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:15:12,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:15:12,728 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:15:12,728 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:15:12,729 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:15:12,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:15:12,729 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:15:12,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:15:12,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:15:12,731 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:15:12,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:15:12,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:15:12,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:15:12,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:15:12,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:15:12,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:15:12,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:15:12,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:15:12,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:15:12,732 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:15:12,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:15:12,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:15:12,733 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:15:12,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:15:12,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:15:12,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:15:12,970 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:15:12,971 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:15:12,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 20:15:13,172 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:15:13,172 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:15:13,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-27 20:15:14,121 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:15:14,379 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:15:14,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-27 20:15:14,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3611da55/a1b9a381609d42e7864a9252846e24e8/FLAG8b97ade3f [2024-06-27 20:15:14,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3611da55/a1b9a381609d42e7864a9252846e24e8 [2024-06-27 20:15:14,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:15:14,416 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:15:14,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:15:14,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:15:14,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:15:14,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:15:13" (1/2) ... [2024-06-27 20:15:14,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4077f02e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:15:14, skipping insertion in model container [2024-06-27 20:15:14,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:15:13" (1/2) ... [2024-06-27 20:15:14,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@130218a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:15:14, skipping insertion in model container [2024-06-27 20:15:14,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:15:14" (2/2) ... [2024-06-27 20:15:14,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4077f02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14, skipping insertion in model container [2024-06-27 20:15:14,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:15:14" (2/2) ... [2024-06-27 20:15:14,428 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:15:14,515 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:15:14,516 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 20:15:14,516 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 20:15:14,516 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 20:15:14,517 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] (((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 20:15:14,517 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:15:14,517 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-06-27 20:15:14,554 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:15:14,837 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:15:14,849 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:15:14,940 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:15:14,981 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:15:14,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14 WrapperNode [2024-06-27 20:15:14,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:15:14,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:15:14,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:15:14,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:15:14,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:14,999 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,032 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-27 20:15:15,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:15:15,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:15:15,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:15:15,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:15:15,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,059 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,084 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 20:15:15,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:15:15,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:15:15,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:15:15,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:15:15,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (1/1) ... [2024-06-27 20:15:15,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:15:15,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:15:15,144 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 20:15:15,164 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 20:15:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:15:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:15:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:15:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:15:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:15:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:15:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 20:15:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 20:15:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 20:15:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 20:15:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:15:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:15:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:15:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:15:15,183 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 20:15:15,320 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:15:15,322 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:15:15,636 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:15:15,636 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:15:15,756 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:15:15,756 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:15:15,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:15:15 BoogieIcfgContainer [2024-06-27 20:15:15,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:15:15,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:15:15,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:15:15,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:15:15,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:15:13" (1/4) ... [2024-06-27 20:15:15,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56960566 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:15:15, skipping insertion in model container [2024-06-27 20:15:15,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:15:14" (2/4) ... [2024-06-27 20:15:15,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56960566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:15:15, skipping insertion in model container [2024-06-27 20:15:15,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:15:14" (3/4) ... [2024-06-27 20:15:15,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56960566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:15:15, skipping insertion in model container [2024-06-27 20:15:15,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:15:15" (4/4) ... [2024-06-27 20:15:15,764 INFO L112 eAbstractionObserver]: Analyzing ICFG mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-27 20:15:15,779 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:15:15,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 20:15:15,779 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:15:15,831 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:15:15,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-27 20:15:15,892 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-27 20:15:15,892 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:15:15,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:15:15,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-27 20:15:15,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-27 20:15:15,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:15:15,916 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;@2cd07bd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:15:15,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 20:15:15,921 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:15:15,921 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:15:15,921 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:15:15,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:15,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:15:15,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:15,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:15,979 INFO L85 PathProgramCache]: Analyzing trace with hash 400592535, now seen corresponding path program 1 times [2024-06-27 20:15:15,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:15,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409063068] [2024-06-27 20:15:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:15,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:17,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409063068] [2024-06-27 20:15:17,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409063068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:17,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:17,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:15:17,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168976368] [2024-06-27 20:15:17,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:17,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:15:17,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:17,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:15:17,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:15:17,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 20:15:17,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:17,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:17,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 20:15:17,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:18,715 INFO L124 PetriNetUnfolderBase]: 11591/16004 cut-off events. [2024-06-27 20:15:18,715 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-06-27 20:15:18,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32130 conditions, 16004 events. 11591/16004 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 86659 event pairs, 8931 based on Foata normal form. 1/15791 useless extension candidates. Maximal degree in co-relation 32117. Up to 15677 conditions per place. [2024-06-27 20:15:18,798 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 44 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-27 20:15:18,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 231 flow [2024-06-27 20:15:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:15:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:15:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-27 20:15:18,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2024-06-27 20:15:18,808 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 95 transitions. [2024-06-27 20:15:18,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 231 flow [2024-06-27 20:15:18,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 20:15:18,813 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-27 20:15:18,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 20:15:18,817 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-27 20:15:18,817 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-27 20:15:18,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:18,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:18,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:18,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:15:18,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:18,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:18,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1577601866, now seen corresponding path program 1 times [2024-06-27 20:15:18,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:18,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329201022] [2024-06-27 20:15:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:18,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:19,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:19,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329201022] [2024-06-27 20:15:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329201022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:19,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:19,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:15:19,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187362029] [2024-06-27 20:15:19,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:19,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:15:19,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:19,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:15:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:15:19,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 20:15:19,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:19,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:19,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 20:15:19,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:20,910 INFO L124 PetriNetUnfolderBase]: 11581/15990 cut-off events. [2024-06-27 20:15:20,910 INFO L125 PetriNetUnfolderBase]: For 2904/2904 co-relation queries the response was YES. [2024-06-27 20:15:20,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36098 conditions, 15990 events. 11581/15990 cut-off events. For 2904/2904 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 86664 event pairs, 7976 based on Foata normal form. 4/15992 useless extension candidates. Maximal degree in co-relation 36086. Up to 15642 conditions per place. [2024-06-27 20:15:20,997 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 54 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-27 20:15:20,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 323 flow [2024-06-27 20:15:20,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:15:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:15:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 20:15:20,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913461538461539 [2024-06-27 20:15:20,999 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 123 transitions. [2024-06-27 20:15:21,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 323 flow [2024-06-27 20:15:21,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:15:21,002 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-27 20:15:21,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 20:15:21,003 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-27 20:15:21,003 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-27 20:15:21,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:21,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:21,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:21,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:15:21,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:21,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash 48092885, now seen corresponding path program 1 times [2024-06-27 20:15:21,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:21,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007973248] [2024-06-27 20:15:21,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:22,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:22,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007973248] [2024-06-27 20:15:22,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007973248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:22,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:22,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:15:22,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223561982] [2024-06-27 20:15:22,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:22,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:15:22,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:22,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:15:22,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:15:22,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 20:15:22,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 20:15:22,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:22,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 20:15:22,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:24,050 INFO L124 PetriNetUnfolderBase]: 14045/19299 cut-off events. [2024-06-27 20:15:24,050 INFO L125 PetriNetUnfolderBase]: For 9571/9571 co-relation queries the response was YES. [2024-06-27 20:15:24,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47998 conditions, 19299 events. 14045/19299 cut-off events. For 9571/9571 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 104178 event pairs, 8205 based on Foata normal form. 4/19301 useless extension candidates. Maximal degree in co-relation 47984. Up to 18876 conditions per place. [2024-06-27 20:15:24,144 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 75 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-06-27 20:15:24,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 510 flow [2024-06-27 20:15:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:15:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:15:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-27 20:15:24,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-06-27 20:15:24,146 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 6 states and 174 transitions. [2024-06-27 20:15:24,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 510 flow [2024-06-27 20:15:24,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 482 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 20:15:24,150 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 256 flow [2024-06-27 20:15:24,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-27 20:15:24,150 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-27 20:15:24,150 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 256 flow [2024-06-27 20:15:24,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 20:15:24,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:24,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:24,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:15:24,151 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:24,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:24,152 INFO L85 PathProgramCache]: Analyzing trace with hash -227463253, now seen corresponding path program 1 times [2024-06-27 20:15:24,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:24,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852756685] [2024-06-27 20:15:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:24,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:25,276 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 20:15:25,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:25,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852756685] [2024-06-27 20:15:25,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852756685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:25,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:25,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:15:25,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617584967] [2024-06-27 20:15:25,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:25,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:15:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:15:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:15:25,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 20:15:25,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:25,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:25,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 20:15:25,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:27,277 INFO L124 PetriNetUnfolderBase]: 14029/19259 cut-off events. [2024-06-27 20:15:27,277 INFO L125 PetriNetUnfolderBase]: For 19375/19375 co-relation queries the response was YES. [2024-06-27 20:15:27,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53266 conditions, 19259 events. 14029/19259 cut-off events. For 19375/19375 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 103709 event pairs, 7104 based on Foata normal form. 8/19265 useless extension candidates. Maximal degree in co-relation 53250. Up to 18810 conditions per place. [2024-06-27 20:15:27,415 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 82 selfloop transitions, 20 changer transitions 0/108 dead transitions. [2024-06-27 20:15:27,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 108 transitions, 600 flow [2024-06-27 20:15:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:15:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:15:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-27 20:15:27,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412087912087912 [2024-06-27 20:15:27,419 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 256 flow. Second operand 7 states and 197 transitions. [2024-06-27 20:15:27,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 108 transitions, 600 flow [2024-06-27 20:15:27,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 108 transitions, 561 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 20:15:27,430 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 289 flow [2024-06-27 20:15:27,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-27 20:15:27,432 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-06-27 20:15:27,432 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 289 flow [2024-06-27 20:15:27,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:27,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:27,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:27,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:15:27,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:27,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1084622608, now seen corresponding path program 1 times [2024-06-27 20:15:27,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:27,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570476402] [2024-06-27 20:15:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:28,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:28,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570476402] [2024-06-27 20:15:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570476402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:28,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:28,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:15:28,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621601774] [2024-06-27 20:15:28,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:28,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:15:28,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:28,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:15:28,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:15:28,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:28,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 20:15:28,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:28,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:28,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:30,095 INFO L124 PetriNetUnfolderBase]: 14020/19255 cut-off events. [2024-06-27 20:15:30,095 INFO L125 PetriNetUnfolderBase]: For 30220/30220 co-relation queries the response was YES. [2024-06-27 20:15:30,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56937 conditions, 19255 events. 14020/19255 cut-off events. For 30220/30220 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 103714 event pairs, 7763 based on Foata normal form. 3/19256 useless extension candidates. Maximal degree in co-relation 56919. Up to 18888 conditions per place. [2024-06-27 20:15:30,216 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 66 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-06-27 20:15:30,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 81 transitions, 511 flow [2024-06-27 20:15:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:15:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:15:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 20:15:30,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2024-06-27 20:15:30,218 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 289 flow. Second operand 5 states and 119 transitions. [2024-06-27 20:15:30,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 81 transitions, 511 flow [2024-06-27 20:15:30,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 457 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 20:15:30,229 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 300 flow [2024-06-27 20:15:30,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-27 20:15:30,230 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-06-27 20:15:30,230 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 300 flow [2024-06-27 20:15:30,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 20:15:30,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:30,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:30,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:15:30,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:30,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash -736436588, now seen corresponding path program 1 times [2024-06-27 20:15:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:30,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249850014] [2024-06-27 20:15:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:30,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:30,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:30,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249850014] [2024-06-27 20:15:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249850014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:30,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:30,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:15:30,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497590359] [2024-06-27 20:15:30,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:30,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:15:30,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:30,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:15:30,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:15:30,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:30,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 20:15:30,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:30,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:30,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:32,751 INFO L124 PetriNetUnfolderBase]: 14044/19345 cut-off events. [2024-06-27 20:15:32,751 INFO L125 PetriNetUnfolderBase]: For 42506/42506 co-relation queries the response was YES. [2024-06-27 20:15:32,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61406 conditions, 19345 events. 14044/19345 cut-off events. For 42506/42506 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 103988 event pairs, 7382 based on Foata normal form. 10/19347 useless extension candidates. Maximal degree in co-relation 61386. Up to 18810 conditions per place. [2024-06-27 20:15:32,856 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 81 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2024-06-27 20:15:32,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 108 transitions, 710 flow [2024-06-27 20:15:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:15:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:15:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 20:15:32,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-06-27 20:15:32,857 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 300 flow. Second operand 6 states and 151 transitions. [2024-06-27 20:15:32,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 108 transitions, 710 flow [2024-06-27 20:15:32,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 677 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 20:15:32,866 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 447 flow [2024-06-27 20:15:32,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=447, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2024-06-27 20:15:32,866 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-27 20:15:32,867 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 447 flow [2024-06-27 20:15:32,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 20:15:32,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:32,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:32,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:15:32,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:32,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash -203748305, now seen corresponding path program 1 times [2024-06-27 20:15:32,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:32,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325585225] [2024-06-27 20:15:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:33,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:33,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325585225] [2024-06-27 20:15:33,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325585225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:33,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:33,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:15:33,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269861545] [2024-06-27 20:15:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:33,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:15:33,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:33,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:15:33,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:15:33,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:33,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 78 transitions, 447 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 20:15:33,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:33,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:33,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:35,481 INFO L124 PetriNetUnfolderBase]: 14066/19374 cut-off events. [2024-06-27 20:15:35,481 INFO L125 PetriNetUnfolderBase]: For 63074/63084 co-relation queries the response was YES. [2024-06-27 20:15:35,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68581 conditions, 19374 events. 14066/19374 cut-off events. For 63074/63084 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 104388 event pairs, 7406 based on Foata normal form. 11/19373 useless extension candidates. Maximal degree in co-relation 68558. Up to 18896 conditions per place. [2024-06-27 20:15:35,562 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 90 selfloop transitions, 21 changer transitions 0/116 dead transitions. [2024-06-27 20:15:35,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 857 flow [2024-06-27 20:15:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:15:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:15:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 20:15:35,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-27 20:15:35,563 INFO L175 Difference]: Start difference. First operand has 70 places, 78 transitions, 447 flow. Second operand 6 states and 149 transitions. [2024-06-27 20:15:35,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 857 flow [2024-06-27 20:15:35,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 116 transitions, 831 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 20:15:35,579 INFO L231 Difference]: Finished difference. Result has 75 places, 86 transitions, 558 flow [2024-06-27 20:15:35,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=558, PETRI_PLACES=75, PETRI_TRANSITIONS=86} [2024-06-27 20:15:35,580 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2024-06-27 20:15:35,580 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 86 transitions, 558 flow [2024-06-27 20:15:35,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 20:15:35,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:35,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:35,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:15:35,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:35,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:35,581 INFO L85 PathProgramCache]: Analyzing trace with hash -174047825, now seen corresponding path program 2 times [2024-06-27 20:15:35,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:35,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910204647] [2024-06-27 20:15:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:35,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:36,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:36,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910204647] [2024-06-27 20:15:36,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910204647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:36,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:36,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:15:36,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127064263] [2024-06-27 20:15:36,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:36,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:15:36,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:36,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:15:36,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:15:36,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:36,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 86 transitions, 558 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 20:15:36,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:36,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:36,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:37,822 INFO L124 PetriNetUnfolderBase]: 14057/19360 cut-off events. [2024-06-27 20:15:37,823 INFO L125 PetriNetUnfolderBase]: For 81755/81755 co-relation queries the response was YES. [2024-06-27 20:15:37,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72916 conditions, 19360 events. 14057/19360 cut-off events. For 81755/81755 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 104318 event pairs, 7399 based on Foata normal form. 3/19352 useless extension candidates. Maximal degree in co-relation 72890. Up to 18923 conditions per place. [2024-06-27 20:15:37,947 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 91 selfloop transitions, 14 changer transitions 0/110 dead transitions. [2024-06-27 20:15:37,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 110 transitions, 830 flow [2024-06-27 20:15:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:15:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:15:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 20:15:37,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-27 20:15:37,951 INFO L175 Difference]: Start difference. First operand has 75 places, 86 transitions, 558 flow. Second operand 6 states and 141 transitions. [2024-06-27 20:15:37,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 110 transitions, 830 flow [2024-06-27 20:15:38,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 764 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 20:15:38,005 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 531 flow [2024-06-27 20:15:38,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2024-06-27 20:15:38,006 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-27 20:15:38,006 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 531 flow [2024-06-27 20:15:38,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 20:15:38,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:38,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:38,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:15:38,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:38,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash -937489999, now seen corresponding path program 1 times [2024-06-27 20:15:38,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587043196] [2024-06-27 20:15:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:38,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:38,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:38,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587043196] [2024-06-27 20:15:38,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587043196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:38,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:38,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:15:38,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270094354] [2024-06-27 20:15:38,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:38,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:15:38,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:38,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:15:38,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:15:39,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:39,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 531 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:39,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:39,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:39,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:40,832 INFO L124 PetriNetUnfolderBase]: 14079/19410 cut-off events. [2024-06-27 20:15:40,833 INFO L125 PetriNetUnfolderBase]: For 91019/91019 co-relation queries the response was YES. [2024-06-27 20:15:40,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73785 conditions, 19410 events. 14079/19410 cut-off events. For 91019/91019 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 104485 event pairs, 7253 based on Foata normal form. 3/19402 useless extension candidates. Maximal degree in co-relation 73757. Up to 18926 conditions per place. [2024-06-27 20:15:40,981 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 104 selfloop transitions, 18 changer transitions 0/127 dead transitions. [2024-06-27 20:15:40,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 127 transitions, 915 flow [2024-06-27 20:15:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:15:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:15:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 20:15:40,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 20:15:40,985 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 531 flow. Second operand 7 states and 169 transitions. [2024-06-27 20:15:40,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 127 transitions, 915 flow [2024-06-27 20:15:41,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 871 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 20:15:41,041 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 586 flow [2024-06-27 20:15:41,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=586, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-06-27 20:15:41,042 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-27 20:15:41,042 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 586 flow [2024-06-27 20:15:41,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:41,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:41,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:41,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:15:41,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:41,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash -937485163, now seen corresponding path program 1 times [2024-06-27 20:15:41,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:41,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582067872] [2024-06-27 20:15:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:41,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:41,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:41,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582067872] [2024-06-27 20:15:41,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582067872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:41,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:41,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:15:41,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662342639] [2024-06-27 20:15:41,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:41,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:15:41,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:15:41,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:15:42,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:42,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 586 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:42,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:42,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:42,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:43,755 INFO L124 PetriNetUnfolderBase]: 14288/19700 cut-off events. [2024-06-27 20:15:43,756 INFO L125 PetriNetUnfolderBase]: For 115123/115125 co-relation queries the response was YES. [2024-06-27 20:15:43,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79429 conditions, 19700 events. 14288/19700 cut-off events. For 115123/115125 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106026 event pairs, 6681 based on Foata normal form. 12/19699 useless extension candidates. Maximal degree in co-relation 79401. Up to 18893 conditions per place. [2024-06-27 20:15:43,917 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 115 selfloop transitions, 39 changer transitions 0/159 dead transitions. [2024-06-27 20:15:43,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 159 transitions, 1338 flow [2024-06-27 20:15:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:15:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:15:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-27 20:15:43,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082417582417582 [2024-06-27 20:15:43,919 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 586 flow. Second operand 7 states and 185 transitions. [2024-06-27 20:15:43,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 159 transitions, 1338 flow [2024-06-27 20:15:43,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 159 transitions, 1271 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 20:15:43,975 INFO L231 Difference]: Finished difference. Result has 85 places, 112 transitions, 855 flow [2024-06-27 20:15:43,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=855, PETRI_PLACES=85, PETRI_TRANSITIONS=112} [2024-06-27 20:15:43,977 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-27 20:15:43,977 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 112 transitions, 855 flow [2024-06-27 20:15:43,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:43,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:43,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:43,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:15:43,978 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:43,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash -937485349, now seen corresponding path program 2 times [2024-06-27 20:15:43,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:43,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195285517] [2024-06-27 20:15:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:43,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:44,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195285517] [2024-06-27 20:15:44,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195285517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:44,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:44,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:15:44,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793417426] [2024-06-27 20:15:44,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:44,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:15:44,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:44,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:15:44,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:15:44,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:44,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 112 transitions, 855 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:44,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:44,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:44,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:46,850 INFO L124 PetriNetUnfolderBase]: 14310/19716 cut-off events. [2024-06-27 20:15:46,851 INFO L125 PetriNetUnfolderBase]: For 148510/148520 co-relation queries the response was YES. [2024-06-27 20:15:46,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87844 conditions, 19716 events. 14310/19716 cut-off events. For 148510/148520 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 105861 event pairs, 6934 based on Foata normal form. 11/19712 useless extension candidates. Maximal degree in co-relation 87812. Up to 19156 conditions per place. [2024-06-27 20:15:47,005 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 117 selfloop transitions, 35 changer transitions 0/157 dead transitions. [2024-06-27 20:15:47,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 157 transitions, 1429 flow [2024-06-27 20:15:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:15:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:15:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 20:15:47,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527472527472525 [2024-06-27 20:15:47,007 INFO L175 Difference]: Start difference. First operand has 85 places, 112 transitions, 855 flow. Second operand 7 states and 173 transitions. [2024-06-27 20:15:47,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 157 transitions, 1429 flow [2024-06-27 20:15:47,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 157 transitions, 1373 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-27 20:15:47,093 INFO L231 Difference]: Finished difference. Result has 91 places, 120 transitions, 1004 flow [2024-06-27 20:15:47,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1004, PETRI_PLACES=91, PETRI_TRANSITIONS=120} [2024-06-27 20:15:47,093 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-27 20:15:47,093 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 120 transitions, 1004 flow [2024-06-27 20:15:47,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:47,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:47,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:47,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:15:47,094 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:47,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:47,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1100514347, now seen corresponding path program 2 times [2024-06-27 20:15:47,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:47,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539646642] [2024-06-27 20:15:47,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:47,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:47,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:47,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539646642] [2024-06-27 20:15:47,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539646642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:47,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:47,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:15:47,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150962702] [2024-06-27 20:15:47,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:47,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:15:47,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:15:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:15:47,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:47,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 120 transitions, 1004 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:47,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:47,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:47,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:50,171 INFO L124 PetriNetUnfolderBase]: 14396/19834 cut-off events. [2024-06-27 20:15:50,171 INFO L125 PetriNetUnfolderBase]: For 180114/180116 co-relation queries the response was YES. [2024-06-27 20:15:50,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92745 conditions, 19834 events. 14396/19834 cut-off events. For 180114/180116 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106678 event pairs, 6874 based on Foata normal form. 12/19832 useless extension candidates. Maximal degree in co-relation 92710. Up to 19145 conditions per place. [2024-06-27 20:15:50,337 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 135 selfloop transitions, 31 changer transitions 0/171 dead transitions. [2024-06-27 20:15:50,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 171 transitions, 1723 flow [2024-06-27 20:15:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:15:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:15:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 20:15:50,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489010989010989 [2024-06-27 20:15:50,338 INFO L175 Difference]: Start difference. First operand has 91 places, 120 transitions, 1004 flow. Second operand 7 states and 178 transitions. [2024-06-27 20:15:50,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 171 transitions, 1723 flow [2024-06-27 20:15:50,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 1647 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 20:15:50,460 INFO L231 Difference]: Finished difference. Result has 96 places, 129 transitions, 1128 flow [2024-06-27 20:15:50,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1128, PETRI_PLACES=96, PETRI_TRANSITIONS=129} [2024-06-27 20:15:50,461 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-06-27 20:15:50,461 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 129 transitions, 1128 flow [2024-06-27 20:15:50,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:50,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:50,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:50,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:15:50,462 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:50,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash -760353829, now seen corresponding path program 3 times [2024-06-27 20:15:50,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:50,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716760419] [2024-06-27 20:15:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:51,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:51,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716760419] [2024-06-27 20:15:51,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716760419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:51,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:51,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:15:51,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77108265] [2024-06-27 20:15:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:51,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:15:51,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:51,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:15:51,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:15:51,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:51,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 129 transitions, 1128 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:51,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:51,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:51,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:53,643 INFO L124 PetriNetUnfolderBase]: 14387/19818 cut-off events. [2024-06-27 20:15:53,643 INFO L125 PetriNetUnfolderBase]: For 207065/207065 co-relation queries the response was YES. [2024-06-27 20:15:53,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96051 conditions, 19818 events. 14387/19818 cut-off events. For 207065/207065 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106423 event pairs, 6923 based on Foata normal form. 3/19807 useless extension candidates. Maximal degree in co-relation 96013. Up to 19350 conditions per place. [2024-06-27 20:15:53,780 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 137 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2024-06-27 20:15:53,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 160 transitions, 1518 flow [2024-06-27 20:15:53,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:15:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:15:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 20:15:53,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478021978021978 [2024-06-27 20:15:53,782 INFO L175 Difference]: Start difference. First operand has 96 places, 129 transitions, 1128 flow. Second operand 7 states and 163 transitions. [2024-06-27 20:15:53,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 160 transitions, 1518 flow [2024-06-27 20:15:53,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 160 transitions, 1423 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-27 20:15:53,944 INFO L231 Difference]: Finished difference. Result has 100 places, 129 transitions, 1080 flow [2024-06-27 20:15:53,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1080, PETRI_PLACES=100, PETRI_TRANSITIONS=129} [2024-06-27 20:15:53,944 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-27 20:15:53,944 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 129 transitions, 1080 flow [2024-06-27 20:15:53,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:53,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:53,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:53,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:15:53,945 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:53,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:53,945 INFO L85 PathProgramCache]: Analyzing trace with hash -760116493, now seen corresponding path program 3 times [2024-06-27 20:15:53,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:53,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954895371] [2024-06-27 20:15:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:53,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:54,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:54,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954895371] [2024-06-27 20:15:54,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954895371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:54,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:54,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:15:54,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211730772] [2024-06-27 20:15:54,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:54,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:15:54,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:54,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:15:54,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:15:54,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:54,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 129 transitions, 1080 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:54,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:54,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:54,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:56,830 INFO L124 PetriNetUnfolderBase]: 14411/19854 cut-off events. [2024-06-27 20:15:56,830 INFO L125 PetriNetUnfolderBase]: For 224469/224471 co-relation queries the response was YES. [2024-06-27 20:15:56,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97523 conditions, 19854 events. 14411/19854 cut-off events. For 224469/224471 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106761 event pairs, 6873 based on Foata normal form. 12/19852 useless extension candidates. Maximal degree in co-relation 97484. Up to 19294 conditions per place. [2024-06-27 20:15:56,978 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 140 selfloop transitions, 27 changer transitions 0/172 dead transitions. [2024-06-27 20:15:56,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 172 transitions, 1694 flow [2024-06-27 20:15:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:15:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:15:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 20:15:56,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527472527472525 [2024-06-27 20:15:56,979 INFO L175 Difference]: Start difference. First operand has 100 places, 129 transitions, 1080 flow. Second operand 7 states and 173 transitions. [2024-06-27 20:15:56,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 172 transitions, 1694 flow [2024-06-27 20:15:57,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 172 transitions, 1633 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 20:15:57,155 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1188 flow [2024-06-27 20:15:57,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1188, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2024-06-27 20:15:57,155 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-27 20:15:57,156 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1188 flow [2024-06-27 20:15:57,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:57,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:57,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:57,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:15:57,156 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:15:57,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:57,157 INFO L85 PathProgramCache]: Analyzing trace with hash 954073619, now seen corresponding path program 1 times [2024-06-27 20:15:57,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:57,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752163443] [2024-06-27 20:15:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:57,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:58,213 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 20:15:58,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:58,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752163443] [2024-06-27 20:15:58,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752163443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:58,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:58,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:15:58,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741219505] [2024-06-27 20:15:58,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:58,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:15:58,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:58,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:15:58,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:15:58,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:15:58,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1188 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:58,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:58,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:15:58,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:16:00,504 INFO L124 PetriNetUnfolderBase]: 14431/19881 cut-off events. [2024-06-27 20:16:00,505 INFO L125 PetriNetUnfolderBase]: For 250981/250983 co-relation queries the response was YES. [2024-06-27 20:16:00,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100060 conditions, 19881 events. 14431/19881 cut-off events. For 250981/250983 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106737 event pairs, 6711 based on Foata normal form. 12/19880 useless extension candidates. Maximal degree in co-relation 100019. Up to 19278 conditions per place. [2024-06-27 20:16:00,681 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 138 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2024-06-27 20:16:00,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 176 transitions, 1794 flow [2024-06-27 20:16:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:16:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:16:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 20:16:00,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47802197802197804 [2024-06-27 20:16:00,684 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1188 flow. Second operand 7 states and 174 transitions. [2024-06-27 20:16:00,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 176 transitions, 1794 flow [2024-06-27 20:16:00,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 176 transitions, 1714 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 20:16:00,884 INFO L231 Difference]: Finished difference. Result has 105 places, 140 transitions, 1255 flow [2024-06-27 20:16:00,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1255, PETRI_PLACES=105, PETRI_TRANSITIONS=140} [2024-06-27 20:16:00,884 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-27 20:16:00,884 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 140 transitions, 1255 flow [2024-06-27 20:16:00,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:00,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:16:00,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:16:00,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:16:00,885 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:16:00,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:16:00,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1137705497, now seen corresponding path program 1 times [2024-06-27 20:16:00,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:16:00,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734201971] [2024-06-27 20:16:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:16:00,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:16:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:16:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:16:01,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:16:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734201971] [2024-06-27 20:16:01,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734201971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:16:01,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:16:01,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:16:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303493040] [2024-06-27 20:16:01,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:16:01,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:16:01,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:16:01,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:16:01,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:16:01,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-27 20:16:01,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 140 transitions, 1255 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:01,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:16:01,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-27 20:16:01,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:16:03,697 INFO L124 PetriNetUnfolderBase]: 13724/19169 cut-off events. [2024-06-27 20:16:03,697 INFO L125 PetriNetUnfolderBase]: For 278193/278193 co-relation queries the response was YES. [2024-06-27 20:16:03,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101033 conditions, 19169 events. 13724/19169 cut-off events. For 278193/278193 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 105899 event pairs, 6871 based on Foata normal form. 2/19157 useless extension candidates. Maximal degree in co-relation 100991. Up to 18485 conditions per place. [2024-06-27 20:16:03,843 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 129 selfloop transitions, 10 changer transitions 0/154 dead transitions. [2024-06-27 20:16:03,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 154 transitions, 1569 flow [2024-06-27 20:16:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:16:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:16:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 20:16:03,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2024-06-27 20:16:03,845 INFO L175 Difference]: Start difference. First operand has 105 places, 140 transitions, 1255 flow. Second operand 5 states and 119 transitions. [2024-06-27 20:16:03,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 154 transitions, 1569 flow [2024-06-27 20:16:04,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 154 transitions, 1438 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 20:16:04,021 INFO L231 Difference]: Finished difference. Result has 105 places, 140 transitions, 1153 flow [2024-06-27 20:16:04,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1153, PETRI_PLACES=105, PETRI_TRANSITIONS=140} [2024-06-27 20:16:04,022 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-27 20:16:04,022 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 140 transitions, 1153 flow [2024-06-27 20:16:04,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:04,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:16:04,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:16:04,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:16:04,022 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:16:04,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:16:04,023 INFO L85 PathProgramCache]: Analyzing trace with hash 998916750, now seen corresponding path program 1 times [2024-06-27 20:16:04,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:16:04,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244109695] [2024-06-27 20:16:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:16:04,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:16:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:16:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:16:05,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:16:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244109695] [2024-06-27 20:16:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244109695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:16:05,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:16:05,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:16:05,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101111351] [2024-06-27 20:16:05,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:16:05,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:16:05,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:16:05,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:16:05,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:16:05,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:16:05,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 140 transitions, 1153 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:05,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:16:05,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:16:05,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:16:07,922 INFO L124 PetriNetUnfolderBase]: 14446/19889 cut-off events. [2024-06-27 20:16:07,922 INFO L125 PetriNetUnfolderBase]: For 302400/302400 co-relation queries the response was YES. [2024-06-27 20:16:08,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105277 conditions, 19889 events. 14446/19889 cut-off events. For 302400/302400 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 106693 event pairs, 6725 based on Foata normal form. 3/19878 useless extension candidates. Maximal degree in co-relation 105234. Up to 19375 conditions per place. [2024-06-27 20:16:08,096 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 167 selfloop transitions, 26 changer transitions 0/198 dead transitions. [2024-06-27 20:16:08,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 198 transitions, 1751 flow [2024-06-27 20:16:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:16:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:16:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 20:16:08,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 20:16:08,099 INFO L175 Difference]: Start difference. First operand has 105 places, 140 transitions, 1153 flow. Second operand 9 states and 216 transitions. [2024-06-27 20:16:08,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 198 transitions, 1751 flow [2024-06-27 20:16:08,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 198 transitions, 1722 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 20:16:08,296 INFO L231 Difference]: Finished difference. Result has 110 places, 144 transitions, 1268 flow [2024-06-27 20:16:08,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1268, PETRI_PLACES=110, PETRI_TRANSITIONS=144} [2024-06-27 20:16:08,297 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2024-06-27 20:16:08,297 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 144 transitions, 1268 flow [2024-06-27 20:16:08,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:08,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:16:08,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:16:08,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:16:08,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:16:08,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:16:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1762679499, now seen corresponding path program 1 times [2024-06-27 20:16:08,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:16:08,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688168963] [2024-06-27 20:16:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:16:08,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:16:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:16:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:16:09,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:16:09,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688168963] [2024-06-27 20:16:09,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688168963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:16:09,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:16:09,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:16:09,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167513788] [2024-06-27 20:16:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:16:09,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:16:09,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:16:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:16:09,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:16:09,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:16:09,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 144 transitions, 1268 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:09,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:16:09,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:16:09,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:16:11,659 INFO L124 PetriNetUnfolderBase]: 14601/20041 cut-off events. [2024-06-27 20:16:11,659 INFO L125 PetriNetUnfolderBase]: For 347337/347339 co-relation queries the response was YES. [2024-06-27 20:16:11,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110991 conditions, 20041 events. 14601/20041 cut-off events. For 347337/347339 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 107026 event pairs, 6590 based on Foata normal form. 12/20049 useless extension candidates. Maximal degree in co-relation 110948. Up to 19483 conditions per place. [2024-06-27 20:16:11,864 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 169 selfloop transitions, 36 changer transitions 0/210 dead transitions. [2024-06-27 20:16:11,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 210 transitions, 2216 flow [2024-06-27 20:16:11,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:16:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:16:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 20:16:11,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278846153846156 [2024-06-27 20:16:11,866 INFO L175 Difference]: Start difference. First operand has 110 places, 144 transitions, 1268 flow. Second operand 8 states and 205 transitions. [2024-06-27 20:16:11,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 210 transitions, 2216 flow [2024-06-27 20:16:12,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 210 transitions, 2106 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 20:16:12,061 INFO L231 Difference]: Finished difference. Result has 113 places, 158 transitions, 1477 flow [2024-06-27 20:16:12,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1477, PETRI_PLACES=113, PETRI_TRANSITIONS=158} [2024-06-27 20:16:12,062 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-27 20:16:12,062 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 158 transitions, 1477 flow [2024-06-27 20:16:12,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:12,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:16:12,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:16:12,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:16:12,063 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:16:12,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:16:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1002726030, now seen corresponding path program 2 times [2024-06-27 20:16:12,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:16:12,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166279045] [2024-06-27 20:16:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:16:12,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:16:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:16:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:16:13,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:16:13,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166279045] [2024-06-27 20:16:13,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166279045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:16:13,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:16:13,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:16:13,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123578025] [2024-06-27 20:16:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:16:13,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:16:13,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:16:13,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:16:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:16:13,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:16:13,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 158 transitions, 1477 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:13,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:16:13,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:16:13,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:16:16,105 INFO L124 PetriNetUnfolderBase]: 14623/20077 cut-off events. [2024-06-27 20:16:16,105 INFO L125 PetriNetUnfolderBase]: For 405510/405523 co-relation queries the response was YES. [2024-06-27 20:16:16,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118078 conditions, 20077 events. 14623/20077 cut-off events. For 405510/405523 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 107367 event pairs, 6620 based on Foata normal form. 13/20085 useless extension candidates. Maximal degree in co-relation 118032. Up to 19565 conditions per place. [2024-06-27 20:16:16,246 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 159 selfloop transitions, 39 changer transitions 0/203 dead transitions. [2024-06-27 20:16:16,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 203 transitions, 2065 flow [2024-06-27 20:16:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:16:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:16:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 20:16:16,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 20:16:16,248 INFO L175 Difference]: Start difference. First operand has 113 places, 158 transitions, 1477 flow. Second operand 8 states and 192 transitions. [2024-06-27 20:16:16,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 203 transitions, 2065 flow [2024-06-27 20:16:16,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 203 transitions, 1892 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-27 20:16:16,498 INFO L231 Difference]: Finished difference. Result has 117 places, 162 transitions, 1487 flow [2024-06-27 20:16:16,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1487, PETRI_PLACES=117, PETRI_TRANSITIONS=162} [2024-06-27 20:16:16,499 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 62 predicate places. [2024-06-27 20:16:16,499 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 162 transitions, 1487 flow [2024-06-27 20:16:16,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:16,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:16:16,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:16:16,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:16:16,500 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:16:16,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:16:16,501 INFO L85 PathProgramCache]: Analyzing trace with hash 160477375, now seen corresponding path program 2 times [2024-06-27 20:16:16,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:16:16,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881619544] [2024-06-27 20:16:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:16:16,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:16:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:16:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:16:17,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:16:17,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881619544] [2024-06-27 20:16:17,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881619544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:16:17,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:16:17,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:16:17,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486755797] [2024-06-27 20:16:17,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:16:17,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:16:17,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:16:17,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:16:17,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:16:17,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:16:17,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 162 transitions, 1487 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:17,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:16:17,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:16:17,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:16:20,479 INFO L124 PetriNetUnfolderBase]: 14894/20436 cut-off events. [2024-06-27 20:16:20,480 INFO L125 PetriNetUnfolderBase]: For 456790/456797 co-relation queries the response was YES. [2024-06-27 20:16:20,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124546 conditions, 20436 events. 14894/20436 cut-off events. For 456790/456797 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 109099 event pairs, 6399 based on Foata normal form. 16/20446 useless extension candidates. Maximal degree in co-relation 124499. Up to 19121 conditions per place. [2024-06-27 20:16:20,650 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 151 selfloop transitions, 78 changer transitions 0/234 dead transitions. [2024-06-27 20:16:20,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 234 transitions, 2783 flow [2024-06-27 20:16:20,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:16:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:16:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 20:16:20,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168269230769231 [2024-06-27 20:16:20,652 INFO L175 Difference]: Start difference. First operand has 117 places, 162 transitions, 1487 flow. Second operand 8 states and 215 transitions. [2024-06-27 20:16:20,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 234 transitions, 2783 flow [2024-06-27 20:16:20,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 234 transitions, 2632 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 20:16:20,896 INFO L231 Difference]: Finished difference. Result has 120 places, 176 transitions, 1759 flow [2024-06-27 20:16:20,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1759, PETRI_PLACES=120, PETRI_TRANSITIONS=176} [2024-06-27 20:16:20,897 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-27 20:16:20,897 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 176 transitions, 1759 flow [2024-06-27 20:16:20,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:20,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:16:20,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:16:20,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:16:20,898 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:16:20,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:16:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1002731765, now seen corresponding path program 3 times [2024-06-27 20:16:20,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:16:20,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236032396] [2024-06-27 20:16:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:16:20,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:16:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:16:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:16:21,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:16:21,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236032396] [2024-06-27 20:16:21,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236032396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:16:21,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:16:21,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:16:21,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509502287] [2024-06-27 20:16:21,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:16:21,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:16:21,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:16:21,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:16:21,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:16:21,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:16:21,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 176 transitions, 1759 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:21,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:16:21,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:16:21,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:16:24,670 INFO L124 PetriNetUnfolderBase]: 14918/20468 cut-off events. [2024-06-27 20:16:24,671 INFO L125 PetriNetUnfolderBase]: For 517100/517107 co-relation queries the response was YES. [2024-06-27 20:16:24,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131221 conditions, 20468 events. 14918/20468 cut-off events. For 517100/517107 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 109336 event pairs, 6385 based on Foata normal form. 16/20478 useless extension candidates. Maximal degree in co-relation 131172. Up to 19151 conditions per place. [2024-06-27 20:16:24,845 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 143 selfloop transitions, 87 changer transitions 0/235 dead transitions. [2024-06-27 20:16:24,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 235 transitions, 2799 flow [2024-06-27 20:16:24,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:16:24,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:16:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 20:16:24,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096153846153846 [2024-06-27 20:16:24,846 INFO L175 Difference]: Start difference. First operand has 120 places, 176 transitions, 1759 flow. Second operand 8 states and 212 transitions. [2024-06-27 20:16:24,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 235 transitions, 2799 flow [2024-06-27 20:16:25,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 235 transitions, 2613 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-06-27 20:16:25,219 INFO L231 Difference]: Finished difference. Result has 125 places, 181 transitions, 1867 flow [2024-06-27 20:16:25,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1867, PETRI_PLACES=125, PETRI_TRANSITIONS=181} [2024-06-27 20:16:25,220 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2024-06-27 20:16:25,220 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 181 transitions, 1867 flow [2024-06-27 20:16:25,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:25,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:16:25,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:16:25,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:16:25,221 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:16:25,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:16:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1497681757, now seen corresponding path program 4 times [2024-06-27 20:16:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:16:25,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990111961] [2024-06-27 20:16:25,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:16:25,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:16:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:16:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:16:26,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:16:26,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990111961] [2024-06-27 20:16:26,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990111961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:16:26,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:16:26,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:16:26,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473708884] [2024-06-27 20:16:26,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:16:26,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:16:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:16:26,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:16:26,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:16:26,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:16:26,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 181 transitions, 1867 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:26,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:16:26,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:16:26,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:16:29,242 INFO L124 PetriNetUnfolderBase]: 15112/20728 cut-off events. [2024-06-27 20:16:29,242 INFO L125 PetriNetUnfolderBase]: For 550595/550597 co-relation queries the response was YES. [2024-06-27 20:16:29,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132930 conditions, 20728 events. 15112/20728 cut-off events. For 550595/550597 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 110815 event pairs, 6638 based on Foata normal form. 12/20736 useless extension candidates. Maximal degree in co-relation 132879. Up to 19809 conditions per place. [2024-06-27 20:16:29,427 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 186 selfloop transitions, 51 changer transitions 0/242 dead transitions. [2024-06-27 20:16:29,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 242 transitions, 3073 flow [2024-06-27 20:16:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:16:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:16:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 20:16:29,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278846153846156 [2024-06-27 20:16:29,429 INFO L175 Difference]: Start difference. First operand has 125 places, 181 transitions, 1867 flow. Second operand 8 states and 205 transitions. [2024-06-27 20:16:29,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 242 transitions, 3073 flow [2024-06-27 20:16:29,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 242 transitions, 2855 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 20:16:29,870 INFO L231 Difference]: Finished difference. Result has 130 places, 192 transitions, 2042 flow [2024-06-27 20:16:29,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2042, PETRI_PLACES=130, PETRI_TRANSITIONS=192} [2024-06-27 20:16:29,871 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2024-06-27 20:16:29,871 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 192 transitions, 2042 flow [2024-06-27 20:16:29,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:29,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:16:29,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:16:29,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:16:29,872 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:16:29,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:16:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash -496122290, now seen corresponding path program 3 times [2024-06-27 20:16:29,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:16:29,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48227746] [2024-06-27 20:16:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:16:29,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:16:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:16:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:16:30,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:16:30,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48227746] [2024-06-27 20:16:30,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48227746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:16:30,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:16:30,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:16:30,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893136388] [2024-06-27 20:16:30,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:16:30,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:16:30,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:16:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:16:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:16:31,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-27 20:16:31,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 192 transitions, 2042 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:31,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:16:31,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-27 20:16:31,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand