./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-hard1.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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/weaver/test-hard1.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-hard1.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-3d25acf-m [2024-01-30 14:26:01,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:26:01,815 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:26:01,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:26:01,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:26:01,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:26:01,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:26:01,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:26:01,843 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:26:01,847 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:26:01,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:26:01,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:26:01,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:26:01,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:26:01,850 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:26:01,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:26:01,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:26:01,850 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:26:01,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:26:01,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:26:01,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:26:01,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:26:01,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:26:01,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:26:01,852 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:26:01,852 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:26:01,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:26:01,852 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:26:01,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:26:01,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:26:01,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:26:01,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:26:01,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:26:01,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:26:01,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:26:01,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:26:01,855 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:26:01,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:26:01,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:26:01,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:26:01,855 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:26:01,856 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:26:01,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:26:01,856 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:26:02,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:26:02,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:26:02,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:26:02,120 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:26:02,121 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:26:02,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-hard1.wvr.yml/witness.yml [2024-01-30 14:26:02,257 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:26:02,258 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:26:02,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2024-01-30 14:26:03,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:26:03,588 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:26:03,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2024-01-30 14:26:03,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351590153/badd69410182416889ff30b133990a60/FLAG48ad3da8d [2024-01-30 14:26:03,627 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351590153/badd69410182416889ff30b133990a60 [2024-01-30 14:26:03,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:26:03,629 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:26:03,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:26:03,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:26:03,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:26:03,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:26:02" (1/2) ... [2024-01-30 14:26:03,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1b1d4f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03, skipping insertion in model container [2024-01-30 14:26:03,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:26:02" (1/2) ... [2024-01-30 14:26:03,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ea8ea26 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:03, skipping insertion in model container [2024-01-30 14:26:03,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:26:03" (2/2) ... [2024-01-30 14:26:03,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1b1d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:03, skipping insertion in model container [2024-01-30 14:26:03,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:26:03" (2/2) ... [2024-01-30 14:26:03,640 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:26:03,680 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:26:03,681 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,681 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] ((1 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-01-30 14:26:03,681 INFO L98 nessWitnessExtractor]: Location invariant before [L112-L112] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,681 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,681 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,682 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] (n2 <= 2147483646) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:26:03,682 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,682 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,682 INFO L98 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,682 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L70] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,682 INFO L98 nessWitnessExtractor]: Location invariant before [L121-L121] ((((p1 == 0U) && (p2 == 0U)) && (m == 0U)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:26:03,682 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,683 INFO L98 nessWitnessExtractor]: Location invariant before [L87-L87] ((1 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-01-30 14:26:03,683 INFO L98 nessWitnessExtractor]: Location invariant before [L85-L85] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,683 INFO L98 nessWitnessExtractor]: Location invariant before [L96-L96] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,683 INFO L98 nessWitnessExtractor]: Loop invariant at [L46-L56] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,683 INFO L98 nessWitnessExtractor]: Loop invariant at [L84-L94] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,683 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] ((1 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-01-30 14:26:03,683 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,683 INFO L98 nessWitnessExtractor]: Location invariant before [L109-L109] (n2 <= 2147483645) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:26:03,684 INFO L98 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,684 INFO L98 nessWitnessExtractor]: Location invariant before [L106-L106] ((2 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-01-30 14:26:03,684 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,684 INFO L98 nessWitnessExtractor]: Location invariant before [L107-L107] ((2 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-01-30 14:26:03,685 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,685 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (n1 <= 2147483646) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:26:03,685 INFO L98 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,685 INFO L98 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,685 INFO L98 nessWitnessExtractor]: Location invariant before [L124-L124] (m == 0U) && (n2 == 0) [2024-01-30 14:26:03,685 INFO L98 nessWitnessExtractor]: Location invariant before [L101-L101] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,685 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (m == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:26:03,686 INFO L98 nessWitnessExtractor]: Loop invariant at [L65-L75] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,686 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] (n1 <= 2147483645) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:26:03,686 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L89] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,686 INFO L98 nessWitnessExtractor]: Location invariant before [L100-L100] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,686 INFO L98 nessWitnessExtractor]: Location invariant before [L111-L111] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,686 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,687 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] ((2 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-01-30 14:26:03,688 INFO L98 nessWitnessExtractor]: Location invariant before [L105-L108] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,688 INFO L98 nessWitnessExtractor]: Location invariant before [L123-L123] ((m == 0U) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:26:03,688 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] ((2 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-01-30 14:26:03,688 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,688 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,689 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,689 INFO L98 nessWitnessExtractor]: Loop invariant at [L103-L113] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,689 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,689 INFO L98 nessWitnessExtractor]: Location invariant before [L115-L115] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,689 INFO L98 nessWitnessExtractor]: Location invariant before [L110-L110] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,689 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,690 INFO L98 nessWitnessExtractor]: Location invariant before [L83-L83] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,690 INFO L98 nessWitnessExtractor]: Location invariant before [L122-L122] (((p2 == 0U) && (m == 0U)) && (n1 == 0)) && (n2 == 0) [2024-01-30 14:26:03,690 INFO L98 nessWitnessExtractor]: Location invariant before [L125-L125] m == 0U [2024-01-30 14:26:03,690 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,690 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L51] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,690 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] (m == 0U) && (n2 == 0) [2024-01-30 14:26:03,691 INFO L98 nessWitnessExtractor]: Location invariant before [L104-L104] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,691 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-30 14:26:03,692 INFO L98 nessWitnessExtractor]: Location invariant before [L88-L88] ((1 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-01-30 14:26:03,722 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:26:03,886 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3425,3438] [2024-01-30 14:26:03,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:26:03,900 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:26:03,909 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:26:03,998 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3425,3438] [2024-01-30 14:26:03,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:26:04,018 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:26:04,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04 WrapperNode [2024-01-30 14:26:04,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:26:04,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:26:04,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:26:04,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:26:04,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,050 INFO L138 Inliner]: procedures = 24, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 102 [2024-01-30 14:26:04,050 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:26:04,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:26:04,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:26:04,051 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:26:04,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,082 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-30 14:26:04,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:26:04,122 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:26:04,122 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:26:04,122 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:26:04,123 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (1/1) ... [2024-01-30 14:26:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:26:04,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:26:04,162 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) [2024-01-30 14:26:04,196 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 [2024-01-30 14:26:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:26:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:26:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:26:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:26:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:26:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-30 14:26:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-30 14:26:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-30 14:26:04,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-30 14:26:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:26:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:26:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:26:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:26:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:26:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:26:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:26:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:26:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:26:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:26:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:26:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:26:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:26:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:26:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:26:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:26:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:26:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:26:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:26:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:26:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:26:04,221 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:26:04,332 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:26:04,335 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:26:04,684 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:26:04,684 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:26:05,031 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:26:05,032 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-30 14:26:05,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:26:05 BoogieIcfgContainer [2024-01-30 14:26:05,033 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:26:05,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:26:05,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:26:05,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:26:05,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:26:02" (1/4) ... [2024-01-30 14:26:05,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b419c9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:26:05, skipping insertion in model container [2024-01-30 14:26:05,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:26:03" (2/4) ... [2024-01-30 14:26:05,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b419c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:26:05, skipping insertion in model container [2024-01-30 14:26:05,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:04" (3/4) ... [2024-01-30 14:26:05,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b419c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:26:05, skipping insertion in model container [2024-01-30 14:26:05,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:26:05" (4/4) ... [2024-01-30 14:26:05,042 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2024-01-30 14:26:05,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:26:05,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2024-01-30 14:26:05,059 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:26:05,166 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-30 14:26:05,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 137 transitions, 302 flow [2024-01-30 14:26:05,264 INFO L124 PetriNetUnfolderBase]: 4/133 cut-off events. [2024-01-30 14:26:05,267 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:26:05,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 133 events. 4/133 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 549 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2024-01-30 14:26:05,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 137 transitions, 302 flow [2024-01-30 14:26:05,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 132 transitions, 288 flow [2024-01-30 14:26:05,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:26:05,297 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;@44cacc5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:26:05,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 122 error locations. [2024-01-30 14:26:05,300 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:26:05,300 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:26:05,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:26:05,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:05,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:26:05,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-30 14:26:05,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:05,306 INFO L85 PathProgramCache]: Analyzing trace with hash 19914, now seen corresponding path program 1 times [2024-01-30 14:26:05,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:05,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293497475] [2024-01-30 14:26:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:05,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:05,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:05,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293497475] [2024-01-30 14:26:05,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293497475] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:05,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:05,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:26:05,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935168965] [2024-01-30 14:26:05,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:05,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:26:05,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:05,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:26:05,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:26:05,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 137 [2024-01-30 14:26:05,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 132 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:05,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:05,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 137 [2024-01-30 14:26:05,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:14,957 INFO L124 PetriNetUnfolderBase]: 74458/109723 cut-off events. [2024-01-30 14:26:14,958 INFO L125 PetriNetUnfolderBase]: For 1944/1944 co-relation queries the response was YES. [2024-01-30 14:26:15,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211071 conditions, 109723 events. 74458/109723 cut-off events. For 1944/1944 co-relation queries the response was YES. Maximal size of possible extension queue 6811. Compared 1021523 event pairs, 73557 based on Foata normal form. 0/63066 useless extension candidates. Maximal degree in co-relation 193929. Up to 98009 conditions per place. [2024-01-30 14:26:16,045 INFO L140 encePairwiseOnDemand]: 118/137 looper letters, 60 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-01-30 14:26:16,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 115 transitions, 378 flow [2024-01-30 14:26:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:26:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:26:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2024-01-30 14:26:16,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6082725060827251 [2024-01-30 14:26:16,057 INFO L175 Difference]: Start difference. First operand has 141 places, 132 transitions, 288 flow. Second operand 3 states and 250 transitions. [2024-01-30 14:26:16,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 115 transitions, 378 flow [2024-01-30 14:26:17,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 115 transitions, 362 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:26:17,486 INFO L231 Difference]: Finished difference. Result has 118 places, 115 transitions, 242 flow [2024-01-30 14:26:17,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=118, PETRI_TRANSITIONS=115} [2024-01-30 14:26:17,490 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -23 predicate places. [2024-01-30 14:26:17,490 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 115 transitions, 242 flow [2024-01-30 14:26:17,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:17,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:17,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:26:17,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:26:17,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-30 14:26:17,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:17,492 INFO L85 PathProgramCache]: Analyzing trace with hash 617985, now seen corresponding path program 1 times [2024-01-30 14:26:17,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:17,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459238993] [2024-01-30 14:26:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:17,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:17,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:17,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459238993] [2024-01-30 14:26:17,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459238993] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:17,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:17,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:26:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687943778] [2024-01-30 14:26:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:17,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 137 [2024-01-30 14:26:17,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:17,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:17,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 137 [2024-01-30 14:26:17,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:24,961 INFO L124 PetriNetUnfolderBase]: 74458/109722 cut-off events. [2024-01-30 14:26:24,962 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2024-01-30 14:26:25,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208846 conditions, 109722 events. 74458/109722 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 6811. Compared 1021485 event pairs, 73557 based on Foata normal form. 0/63066 useless extension candidates. Maximal degree in co-relation 208837. Up to 98005 conditions per place. [2024-01-30 14:26:26,199 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 58 selfloop transitions, 3 changer transitions 0/114 dead transitions. [2024-01-30 14:26:26,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 362 flow [2024-01-30 14:26:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-01-30 14:26:26,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364963503649635 [2024-01-30 14:26:26,215 INFO L175 Difference]: Start difference. First operand has 118 places, 115 transitions, 242 flow. Second operand 4 states and 294 transitions. [2024-01-30 14:26:26,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 362 flow [2024-01-30 14:26:26,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 114 transitions, 358 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:26,217 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 242 flow [2024-01-30 14:26:26,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2024-01-30 14:26:26,218 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -23 predicate places. [2024-01-30 14:26:26,218 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 242 flow [2024-01-30 14:26:26,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:26,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:26,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:26:26,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:26:26,218 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-30 14:26:26,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:26,219 INFO L85 PathProgramCache]: Analyzing trace with hash 19158151, now seen corresponding path program 1 times [2024-01-30 14:26:26,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:26,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91139945] [2024-01-30 14:26:26,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:26,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:26,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:26,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91139945] [2024-01-30 14:26:26,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91139945] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:26,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:26,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:26:26,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147605612] [2024-01-30 14:26:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:26,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:26,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:26,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:26,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:26,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 137 [2024-01-30 14:26:26,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:26,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:26,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 137 [2024-01-30 14:26:26,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:34,151 INFO L124 PetriNetUnfolderBase]: 81551/120121 cut-off events. [2024-01-30 14:26:34,151 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2024-01-30 14:26:34,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228578 conditions, 120121 events. 81551/120121 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 7393. Compared 1120094 event pairs, 80557 based on Foata normal form. 1/69968 useless extension candidates. Maximal degree in co-relation 228564. Up to 107227 conditions per place. [2024-01-30 14:26:35,176 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 59 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2024-01-30 14:26:35,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 113 transitions, 362 flow [2024-01-30 14:26:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:26:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:26:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2024-01-30 14:26:35,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5742092457420924 [2024-01-30 14:26:35,179 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 242 flow. Second operand 3 states and 236 transitions. [2024-01-30 14:26:35,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 113 transitions, 362 flow [2024-01-30 14:26:35,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 356 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:26:35,181 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 238 flow [2024-01-30 14:26:35,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2024-01-30 14:26:35,182 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -25 predicate places. [2024-01-30 14:26:35,182 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 238 flow [2024-01-30 14:26:35,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:35,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:35,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:26:35,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:26:35,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-30 14:26:35,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash 593903351, now seen corresponding path program 1 times [2024-01-30 14:26:35,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:35,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361970347] [2024-01-30 14:26:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:35,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:35,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:35,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361970347] [2024-01-30 14:26:35,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361970347] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:35,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:35,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:26:35,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887598777] [2024-01-30 14:26:35,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:35,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 137 [2024-01-30 14:26:35,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:35,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:35,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 137 [2024-01-30 14:26:35,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:42,652 INFO L124 PetriNetUnfolderBase]: 81551/120120 cut-off events. [2024-01-30 14:26:42,652 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2024-01-30 14:26:42,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228575 conditions, 120120 events. 81551/120120 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 7393. Compared 1119997 event pairs, 80557 based on Foata normal form. 0/69967 useless extension candidates. Maximal degree in co-relation 228562. Up to 107225 conditions per place. [2024-01-30 14:26:43,437 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 58 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-01-30 14:26:43,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 112 transitions, 356 flow [2024-01-30 14:26:43,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:26:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:26:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2024-01-30 14:26:43,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5790754257907542 [2024-01-30 14:26:43,439 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 238 flow. Second operand 3 states and 238 transitions. [2024-01-30 14:26:43,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 112 transitions, 356 flow [2024-01-30 14:26:43,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 112 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:43,441 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 236 flow [2024-01-30 14:26:43,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2024-01-30 14:26:43,442 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -26 predicate places. [2024-01-30 14:26:43,442 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 236 flow [2024-01-30 14:26:43,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:43,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:43,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:26:43,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:26:43,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 119 more)] === [2024-01-30 14:26:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1231135373, now seen corresponding path program 1 times [2024-01-30 14:26:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632791931] [2024-01-30 14:26:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:43,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632791931] [2024-01-30 14:26:43,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632791931] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:43,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:43,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:26:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680371964] [2024-01-30 14:26:43,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:43,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:26:43,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:26:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:26:43,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 137 [2024-01-30 14:26:43,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:43,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:43,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 137 [2024-01-30 14:26:43,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand