./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.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/popl20-mult-equiv.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 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/popl20-mult-equiv.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-mult-equiv.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-59af5db-m [2024-02-02 09:21:40,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:21:40,780 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:21:40,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:21:40,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:21:40,818 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:21:40,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:21:40,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:21:40,819 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:21:40,823 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:21:40,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:21:40,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:21:40,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:21:40,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:21:40,825 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:21:40,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:21:40,826 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:21:40,826 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:21:40,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:21:40,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:21:40,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:21:40,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:21:40,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:21:40,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:21:40,829 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:21:40,829 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:21:40,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:21:40,829 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:21:40,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:21:40,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:21:40,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:21:40,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:21:40,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:21:40,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:21:40,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:21:40,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:21:40,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:21:40,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:21:40,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:21:40,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:21:40,833 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:21:40,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:21:40,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:21:40,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:21:41,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:21:41,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:21:41,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:21:41,093 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:21:41,096 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:21:41,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2024-02-02 09:21:42,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:21:42,376 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:21:42,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2024-02-02 09:21:42,385 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c974a82/5dc71034cd014029b567fd40b5c3a6b9/FLAG7a34e6be6 [2024-02-02 09:21:42,398 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c974a82/5dc71034cd014029b567fd40b5c3a6b9 [2024-02-02 09:21:42,400 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:21:42,400 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:21:42,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-mult-equiv.wvr.yml/witness.yml [2024-02-02 09:21:42,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:21:42,517 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:21:42,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:21:42,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:21:42,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:21:42,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:21:42" (1/2) ... [2024-02-02 09:21:42,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782c0582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:42, skipping insertion in model container [2024-02-02 09:21:42,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:21:42" (1/2) ... [2024-02-02 09:21:42,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63d434a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:42, skipping insertion in model container [2024-02-02 09:21:42,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:21:42" (2/2) ... [2024-02-02 09:21:42,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782c0582 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42, skipping insertion in model container [2024-02-02 09:21:42,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:21:42" (2/2) ... [2024-02-02 09:21:42,526 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:21:42,554 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:21:42,555 INFO L101 nessWitnessExtractor]: Location invariant before [L69-L69] (N <= 4294967293U) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:42,555 INFO L101 nessWitnessExtractor]: Location invariant before [L71-L71] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,556 INFO L101 nessWitnessExtractor]: Loop invariant at [L44-L54] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,568 INFO L101 nessWitnessExtractor]: Location invariant before [L43-L43] (((((unsigned long )_argptr == 0UL) && (M == 0U)) && (N == 0U)) && (p == 0U)) && (q == 0U) [2024-02-02 09:21:42,568 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,568 INFO L101 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,568 INFO L101 nessWitnessExtractor]: Location invariant before [L46-L49] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,568 INFO L101 nessWitnessExtractor]: Loop invariant at [L63-L73] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L65-L68] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L64-L64] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L67-L67] ((2U <= N) && ((unsigned long )_argptr == 0UL)) && (N != 0U) [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L47-L47] ((1U <= N) && ((unsigned long )_argptr == 0UL)) && (N != 0U) [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L48-L48] ((1U <= N) && ((unsigned long )_argptr == 0UL)) && (N != 0U) [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,569 INFO L101 nessWitnessExtractor]: Location invariant before [L66-L66] ((2U <= N) && ((unsigned long )_argptr == 0UL)) && (N != 0U) [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L86-L86] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L93-L93] (((M == 0U) && (N == 0U)) && (p == 0U)) && (q == 0U) [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Loop invariant at [L79-L84] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L50-L50] (N <= 4294967294U) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L94-L94] ((N == 0U) && (p == 0U)) && (q == 0U) [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L92-L92] ((((L == 0U) && (M == 0U)) && (N == 0U)) && (p == 0U)) && (q == 0U) [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L56-L56] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,570 INFO L101 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,571 INFO L101 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,571 INFO L101 nessWitnessExtractor]: Location invariant before [L83-L83] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,571 INFO L101 nessWitnessExtractor]: Location invariant before [L97-L97] (p == 0U) && (q == 0U) [2024-02-02 09:21:42,571 INFO L101 nessWitnessExtractor]: Location invariant before [L72-L72] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,571 INFO L101 nessWitnessExtractor]: Location invariant before [L80-L80] (unsigned long )_argptr == 0UL [2024-02-02 09:21:42,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:21:42,718 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/popl20-mult-equiv.wvr.c[2630,2643] [2024-02-02 09:21:42,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:21:42,728 INFO L202 MainTranslator]: Completed pre-run 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 [2024-02-02 09:21:42,793 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/popl20-mult-equiv.wvr.c[2630,2643] [2024-02-02 09:21:42,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:21:42,804 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:21:42,805 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42 WrapperNode [2024-02-02 09:21:42,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:21:42,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:21:42,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:21:42,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:21:42,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,836 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2024-02-02 09:21:42,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:21:42,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:21:42,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:21:42,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:21:42,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,881 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-02-02 09:21:42,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:21:42,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:21:42,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:21:42,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:21:42,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (1/1) ... [2024-02-02 09:21:42,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:21:42,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:21:42,962 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) [2024-02-02 09:21:42,967 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 [2024-02-02 09:21:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:21:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-02 09:21:42,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-02 09:21:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-02 09:21:42,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-02 09:21:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-02 09:21:42,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-02 09:21:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:21:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:21:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:21:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:21:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:21:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:21:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:21:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:21:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:21:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 09:21:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 09:21:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:21:42,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:21:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:21:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:21:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:21:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:21:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:21:42,996 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:21:43,098 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:21:43,100 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:21:43,418 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:21:43,418 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:21:43,635 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:21:43,636 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-02 09:21:43,638 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:21:43 BoogieIcfgContainer [2024-02-02 09:21:43,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:21:43,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:21:43,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:21:43,643 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:21:43,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:21:42" (1/4) ... [2024-02-02 09:21:43,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1410247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:21:43, skipping insertion in model container [2024-02-02 09:21:43,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:21:42" (2/4) ... [2024-02-02 09:21:43,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1410247 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:21:43, skipping insertion in model container [2024-02-02 09:21:43,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:42" (3/4) ... [2024-02-02 09:21:43,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1410247 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:21:43, skipping insertion in model container [2024-02-02 09:21:43,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:21:43" (4/4) ... [2024-02-02 09:21:43,648 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2024-02-02 09:21:43,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:21:43,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2024-02-02 09:21:43,669 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:21:43,749 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-02 09:21:43,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 93 transitions, 207 flow [2024-02-02 09:21:43,832 INFO L124 PetriNetUnfolderBase]: 3/90 cut-off events. [2024-02-02 09:21:43,833 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-02 09:21:43,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 90 events. 3/90 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 322 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2024-02-02 09:21:43,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 93 transitions, 207 flow [2024-02-02 09:21:43,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 89 transitions, 196 flow [2024-02-02 09:21:43,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:21:43,863 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;@17c62c34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:21:43,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2024-02-02 09:21:43,865 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:21:43,865 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:21:43,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:21:43,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:43,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:21:43,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 75 more)] === [2024-02-02 09:21:43,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:43,872 INFO L85 PathProgramCache]: Analyzing trace with hash 13924, now seen corresponding path program 1 times [2024-02-02 09:21:43,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:43,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745773623] [2024-02-02 09:21:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:43,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:44,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745773623] [2024-02-02 09:21:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745773623] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:44,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:44,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:21:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582436714] [2024-02-02 09:21:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:44,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:44,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:44,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:44,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:44,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2024-02-02 09:21:44,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:44,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:44,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2024-02-02 09:21:44,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:21:44,991 INFO L124 PetriNetUnfolderBase]: 2911/4946 cut-off events. [2024-02-02 09:21:44,992 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-02-02 09:21:45,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9453 conditions, 4946 events. 2911/4946 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 39480 event pairs, 2829 based on Foata normal form. 0/3064 useless extension candidates. Maximal degree in co-relation 8730. Up to 4239 conditions per place. [2024-02-02 09:21:45,023 INFO L140 encePairwiseOnDemand]: 79/93 looper letters, 40 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-02-02 09:21:45,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 256 flow [2024-02-02 09:21:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:21:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:21:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-02-02 09:21:45,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-02-02 09:21:45,033 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 196 flow. Second operand 3 states and 168 transitions. [2024-02-02 09:21:45,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 256 flow [2024-02-02 09:21:45,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 244 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:21:45,046 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 164 flow [2024-02-02 09:21:45,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2024-02-02 09:21:45,050 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -16 predicate places. [2024-02-02 09:21:45,050 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 164 flow [2024-02-02 09:21:45,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:45,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:45,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-02 09:21:45,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:21:45,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 75 more)] === [2024-02-02 09:21:45,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:45,051 INFO L85 PathProgramCache]: Analyzing trace with hash 432086, now seen corresponding path program 1 times [2024-02-02 09:21:45,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:45,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550379114] [2024-02-02 09:21:45,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:45,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:45,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:45,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550379114] [2024-02-02 09:21:45,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550379114] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:45,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:45,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:21:45,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889292735] [2024-02-02 09:21:45,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:45,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:45,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:45,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2024-02-02 09:21:45,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:45,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:45,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2024-02-02 09:21:45,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:21:45,567 INFO L124 PetriNetUnfolderBase]: 2518/4947 cut-off events. [2024-02-02 09:21:45,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:21:45,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 4947 events. 2518/4947 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 43093 event pairs, 590 based on Foata normal form. 1/3299 useless extension candidates. Maximal degree in co-relation 8633. Up to 2664 conditions per place. [2024-02-02 09:21:45,598 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 52 selfloop transitions, 3 changer transitions 1/91 dead transitions. [2024-02-02 09:21:45,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 91 transitions, 306 flow [2024-02-02 09:21:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:21:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:21:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-02-02 09:21:45,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6379928315412187 [2024-02-02 09:21:45,604 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 164 flow. Second operand 3 states and 178 transitions. [2024-02-02 09:21:45,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 91 transitions, 306 flow [2024-02-02 09:21:45,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 91 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:21:45,607 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 157 flow [2024-02-02 09:21:45,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2024-02-02 09:21:45,607 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -19 predicate places. [2024-02-02 09:21:45,608 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 157 flow [2024-02-02 09:21:45,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:45,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:45,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-02 09:21:45,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:21:45,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 75 more)] === [2024-02-02 09:21:45,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash 13395139, now seen corresponding path program 1 times [2024-02-02 09:21:45,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:45,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440355835] [2024-02-02 09:21:45,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:45,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:45,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:45,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440355835] [2024-02-02 09:21:45,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440355835] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:45,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:45,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:21:45,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001671940] [2024-02-02 09:21:45,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:45,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:45,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:45,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:45,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:45,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 93 [2024-02-02 09:21:45,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:45,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:45,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 93 [2024-02-02 09:21:45,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:21:46,347 INFO L124 PetriNetUnfolderBase]: 4210/7942 cut-off events. [2024-02-02 09:21:46,347 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-02-02 09:21:46,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14079 conditions, 7942 events. 4210/7942 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 67312 event pairs, 1658 based on Foata normal form. 0/5354 useless extension candidates. Maximal degree in co-relation 3476. Up to 3122 conditions per place. [2024-02-02 09:21:46,388 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 60 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2024-02-02 09:21:46,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 341 flow [2024-02-02 09:21:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:21:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:21:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-02-02 09:21:46,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6738351254480287 [2024-02-02 09:21:46,391 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 157 flow. Second operand 3 states and 188 transitions. [2024-02-02 09:21:46,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 341 flow [2024-02-02 09:21:46,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:21:46,393 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 165 flow [2024-02-02 09:21:46,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2024-02-02 09:21:46,394 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -20 predicate places. [2024-02-02 09:21:46,395 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 165 flow [2024-02-02 09:21:46,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:46,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:46,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:21:46,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:21:46,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 75 more)] === [2024-02-02 09:21:46,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 415249712, now seen corresponding path program 1 times [2024-02-02 09:21:46,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:46,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549504296] [2024-02-02 09:21:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:46,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:46,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:46,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549504296] [2024-02-02 09:21:46,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549504296] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:46,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:46,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:21:46,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226092993] [2024-02-02 09:21:46,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:46,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:46,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:46,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:46,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:46,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 93 [2024-02-02 09:21:46,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:46,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:46,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 93 [2024-02-02 09:21:46,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:21:47,212 INFO L124 PetriNetUnfolderBase]: 7017/12587 cut-off events. [2024-02-02 09:21:47,212 INFO L125 PetriNetUnfolderBase]: For 1251/1261 co-relation queries the response was YES. [2024-02-02 09:21:47,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23550 conditions, 12587 events. 7017/12587 cut-off events. For 1251/1261 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 107451 event pairs, 1511 based on Foata normal form. 10/9255 useless extension candidates. Maximal degree in co-relation 7969. Up to 7121 conditions per place. [2024-02-02 09:21:47,284 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 60 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-02-02 09:21:47,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 365 flow [2024-02-02 09:21:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:21:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:21:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-02-02 09:21:47,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6845878136200717 [2024-02-02 09:21:47,286 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 165 flow. Second operand 3 states and 191 transitions. [2024-02-02 09:21:47,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 365 flow [2024-02-02 09:21:47,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:21:47,290 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 209 flow [2024-02-02 09:21:47,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-02-02 09:21:47,290 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -18 predicate places. [2024-02-02 09:21:47,291 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 209 flow [2024-02-02 09:21:47,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:47,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:47,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:21:47,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:21:47,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 75 more)] === [2024-02-02 09:21:47,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:47,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1198908575, now seen corresponding path program 1 times [2024-02-02 09:21:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:47,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589016892] [2024-02-02 09:21:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:47,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:47,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589016892] [2024-02-02 09:21:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589016892] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:47,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:47,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:21:47,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787041968] [2024-02-02 09:21:47,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:47,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:21:47,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:21:47,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:21:47,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-02-02 09:21:47,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:47,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:47,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-02-02 09:21:47,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:21:48,209 INFO L124 PetriNetUnfolderBase]: 5460/9456 cut-off events. [2024-02-02 09:21:48,209 INFO L125 PetriNetUnfolderBase]: For 4180/4782 co-relation queries the response was YES. [2024-02-02 09:21:48,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19818 conditions, 9456 events. 5460/9456 cut-off events. For 4180/4782 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 74351 event pairs, 729 based on Foata normal form. 1696/10011 useless extension candidates. Maximal degree in co-relation 3170. Up to 7011 conditions per place. [2024-02-02 09:21:48,251 INFO L140 encePairwiseOnDemand]: 82/93 looper letters, 57 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-02-02 09:21:48,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 87 transitions, 365 flow [2024-02-02 09:21:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:21:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:21:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-02-02 09:21:48,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-02-02 09:21:48,252 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 209 flow. Second operand 4 states and 204 transitions. [2024-02-02 09:21:48,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 87 transitions, 365 flow [2024-02-02 09:21:48,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:21:48,258 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 183 flow [2024-02-02 09:21:48,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-02-02 09:21:48,259 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -26 predicate places. [2024-02-02 09:21:48,260 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 183 flow [2024-02-02 09:21:48,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:21:48,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:48,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:21:48,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:21:48,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 75 more)] === [2024-02-02 09:21:48,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:48,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1488539347, now seen corresponding path program 1 times [2024-02-02 09:21:48,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:48,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709349725] [2024-02-02 09:21:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:48,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:21:48,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:21:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:21:48,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:21:48,308 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:21:48,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (77 of 78 remaining) [2024-02-02 09:21:48,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (76 of 78 remaining) [2024-02-02 09:21:48,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (75 of 78 remaining) [2024-02-02 09:21:48,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (74 of 78 remaining) [2024-02-02 09:21:48,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (73 of 78 remaining) [2024-02-02 09:21:48,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (72 of 78 remaining) [2024-02-02 09:21:48,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (71 of 78 remaining) [2024-02-02 09:21:48,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (70 of 78 remaining) [2024-02-02 09:21:48,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (69 of 78 remaining) [2024-02-02 09:21:48,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (68 of 78 remaining) [2024-02-02 09:21:48,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (67 of 78 remaining) [2024-02-02 09:21:48,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (66 of 78 remaining) [2024-02-02 09:21:48,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (65 of 78 remaining) [2024-02-02 09:21:48,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (64 of 78 remaining) [2024-02-02 09:21:48,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (63 of 78 remaining) [2024-02-02 09:21:48,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (62 of 78 remaining) [2024-02-02 09:21:48,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (61 of 78 remaining) [2024-02-02 09:21:48,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 78 remaining) [2024-02-02 09:21:48,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 78 remaining) [2024-02-02 09:21:48,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 78 remaining) [2024-02-02 09:21:48,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err13ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 78 remaining) [2024-02-02 09:21:48,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 78 remaining) [2024-02-02 09:21:48,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 78 remaining) [2024-02-02 09:21:48,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 78 remaining) [2024-02-02 09:21:48,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 78 remaining) [2024-02-02 09:21:48,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 78 remaining) [2024-02-02 09:21:48,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 78 remaining) [2024-02-02 09:21:48,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err11ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 78 remaining) [2024-02-02 09:21:48,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err12ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 78 remaining) [2024-02-02 09:21:48,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 78 remaining) [2024-02-02 09:21:48,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 78 remaining) [2024-02-02 09:21:48,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err6ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 78 remaining) [2024-02-02 09:21:48,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 78 remaining) [2024-02-02 09:21:48,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 78 remaining) [2024-02-02 09:21:48,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 78 remaining) [2024-02-02 09:21:48,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 78 remaining) [2024-02-02 09:21:48,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 78 remaining) [2024-02-02 09:21:48,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 78 remaining) [2024-02-02 09:21:48,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 78 remaining) [2024-02-02 09:21:48,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 78 remaining) [2024-02-02 09:21:48,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (37 of 78 remaining) [2024-02-02 09:21:48,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 78 remaining) [2024-02-02 09:21:48,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 78 remaining) [2024-02-02 09:21:48,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 78 remaining) [2024-02-02 09:21:48,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 78 remaining) [2024-02-02 09:21:48,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 78 remaining) [2024-02-02 09:21:48,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 78 remaining) [2024-02-02 09:21:48,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 78 remaining) [2024-02-02 09:21:48,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 78 remaining) [2024-02-02 09:21:48,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 78 remaining) [2024-02-02 09:21:48,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 78 remaining) [2024-02-02 09:21:48,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 78 remaining) [2024-02-02 09:21:48,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 78 remaining) [2024-02-02 09:21:48,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 78 remaining) [2024-02-02 09:21:48,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 78 remaining) [2024-02-02 09:21:48,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 78 remaining) [2024-02-02 09:21:48,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 78 remaining) [2024-02-02 09:21:48,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 78 remaining) [2024-02-02 09:21:48,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 78 remaining) [2024-02-02 09:21:48,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 78 remaining) [2024-02-02 09:21:48,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 78 remaining) [2024-02-02 09:21:48,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 78 remaining) [2024-02-02 09:21:48,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err13ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 78 remaining) [2024-02-02 09:21:48,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 78 remaining) [2024-02-02 09:21:48,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 78 remaining) [2024-02-02 09:21:48,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 78 remaining) [2024-02-02 09:21:48,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 78 remaining) [2024-02-02 09:21:48,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 78 remaining) [2024-02-02 09:21:48,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 78 remaining) [2024-02-02 09:21:48,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err11ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 78 remaining) [2024-02-02 09:21:48,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err12ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 78 remaining) [2024-02-02 09:21:48,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 78 remaining) [2024-02-02 09:21:48,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 78 remaining) [2024-02-02 09:21:48,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 78 remaining) [2024-02-02 09:21:48,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 78 remaining) [2024-02-02 09:21:48,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 78 remaining) [2024-02-02 09:21:48,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 78 remaining) [2024-02-02 09:21:48,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 78 remaining) [2024-02-02 09:21:48,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:21:48,328 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-02-02 09:21:48,334 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:21:48,335 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:21:48,354 INFO L503 ceAbstractionStarter]: Automizer considered 39 witness invariants [2024-02-02 09:21:48,354 INFO L504 ceAbstractionStarter]: WitnessConsidered=39 [2024-02-02 09:21:48,355 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:21:48 BasicIcfg [2024-02-02 09:21:48,355 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:21:48,356 INFO L158 Benchmark]: Toolchain (without parser) took 5839.21ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 811.6MB). Free memory was 120.5MB in the beginning and 767.6MB in the end (delta: -647.1MB). Peak memory consumption was 164.7MB. Max. memory is 16.1GB. [2024-02-02 09:21:48,356 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 195.0MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:21:48,356 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:21:48,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.22ms. Allocated memory is still 195.0MB. Free memory was 120.3MB in the beginning and 161.4MB in the end (delta: -41.1MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2024-02-02 09:21:48,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.40ms. Allocated memory is still 195.0MB. Free memory was 161.4MB in the beginning and 160.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:21:48,358 INFO L158 Benchmark]: Boogie Preprocessor took 67.61ms. Allocated memory is still 195.0MB. Free memory was 160.3MB in the beginning and 157.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:21:48,358 INFO L158 Benchmark]: RCFGBuilder took 732.72ms. Allocated memory is still 195.0MB. Free memory was 157.2MB in the beginning and 106.9MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-02-02 09:21:48,358 INFO L158 Benchmark]: TraceAbstraction took 4714.73ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 811.6MB). Free memory was 106.9MB in the beginning and 767.6MB in the end (delta: -660.7MB). Peak memory consumption was 150.8MB. Max. memory is 16.1GB. [2024-02-02 09:21:48,359 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 195.0MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.22ms. Allocated memory is still 195.0MB. Free memory was 120.3MB in the beginning and 161.4MB in the end (delta: -41.1MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.40ms. Allocated memory is still 195.0MB. Free memory was 161.4MB in the beginning and 160.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.61ms. Allocated memory is still 195.0MB. Free memory was 160.3MB in the beginning and 157.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 732.72ms. Allocated memory is still 195.0MB. Free memory was 157.2MB in the beginning and 106.9MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4714.73ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 811.6MB). Free memory was 106.9MB in the beginning and 767.6MB in the end (delta: -660.7MB). Peak memory consumption was 150.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 unsigned int L, M, N, p, q; [L90] 0 pthread_t t1, t2, t3; VAL [L=0, M=0, N=0, p=0, q=0, t1={5:0}, t2={6:0}, t3={3:0}] [L92] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[L],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[M],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[N],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[p],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[q],IntegerLiteral[0U]]]]] [L92] 0 L = __VERIFIER_nondet_uint() [L93] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[M],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[N],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[p],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[q],IntegerLiteral[0U]]]]] [L93] 0 M = __VERIFIER_nondet_uint() [L94] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[N],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[p],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[q],IntegerLiteral[0U]]]]] [L94] 0 N = L VAL [L=0, N=0, p=0, q=0, t1={5:0}, t2={6:0}, t3={3:0}] [L97] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[p],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[q],IntegerLiteral[0U]]]]] [L97] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [L=0, N=0, _argptr={0:0}, p=0, q=0, t1={5:0}, t2={6:0}, t3={3:0}] [L41] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] VAL [L=0, N=0, _argptr={0:0}, _argptr={0:0}, p=0, q=0] [L42] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] [L42] 1 _Bool cond = N > 0; [L43] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]],BinaryExpression[COMPEQ,IdentifierExpression[M],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[N],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[p],IntegerLiteral[0U]]],BinaryExpression[COMPEQ,IdentifierExpression[q],IntegerLiteral[0U]]]]] VAL [L=0, M=1, N=0, _argptr={0:0}, _argptr={0:0}, cond=0, p=0, q=0] - UnprovableResult [Line: 41]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 44]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 46]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 48]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 51]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 52]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 53]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 44]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 75]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 67]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 80]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 82]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 83]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 92]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 93]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 94]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 97]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 105]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 99]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 98]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 97]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 161 locations, 78 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 209 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 416 IncrementalHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 10 mSDtfsCounter, 416 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-02 09:21:48,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE