./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/sync01.i --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/sync01.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/sync01.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/sync01.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-3d25acf-m [2024-01-30 14:15:16,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:15:16,913 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:15:16,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:15:16,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:15:16,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:15:16,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:15:16,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:15:16,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:15:16,960 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:15:16,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:15:16,961 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:15:16,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:15:16,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:15:16,963 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:15:16,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:15:16,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:15:16,964 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:15:16,964 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:15:16,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:15:16,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:15:16,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:15:16,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:15:16,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:15:16,966 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:15:16,966 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:15:16,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:15:16,967 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:15:16,968 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:15:16,968 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:15:16,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:15:16,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:15:16,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:15:16,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:15:16,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:15:16,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:15:16,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:15:16,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:15:16,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:15:16,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:15:16,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:15:16,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:15:16,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:15:16,972 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:15:17,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:15:17,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:15:17,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:15:17,313 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:15:17,313 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:15:17,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2024-01-30 14:15:18,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:15:18,775 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:15:18,775 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2024-01-30 14:15:18,798 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f00dde32/92643d41a89e4a79a25695d0e0972078/FLAGebd1f0cc5 [2024-01-30 14:15:18,810 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f00dde32/92643d41a89e4a79a25695d0e0972078 [2024-01-30 14:15:18,812 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:15:18,813 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:15:18,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/sync01.yml/witness.yml [2024-01-30 14:15:18,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:15:18,922 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:15:18,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:15:18,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:15:18,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:15:18,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:15:18" (1/2) ... [2024-01-30 14:15:18,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327525a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:15:18, skipping insertion in model container [2024-01-30 14:15:18,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:15:18" (1/2) ... [2024-01-30 14:15:18,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6cc4fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:15:18, skipping insertion in model container [2024-01-30 14:15:18,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:18" (2/2) ... [2024-01-30 14:15:18,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327525a9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:18, skipping insertion in model container [2024-01-30 14:15:18,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:18" (2/2) ... [2024-01-30 14:15:18,933 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:15:18,989 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:15:18,991 INFO L98 nessWitnessExtractor]: Location invariant before [L935-L935] (unsigned long )arg == 0UL [2024-01-30 14:15:18,991 INFO L98 nessWitnessExtractor]: Location invariant before [L941-L941] (unsigned long )arg == 0UL [2024-01-30 14:15:18,992 INFO L98 nessWitnessExtractor]: Location invariant before [L940-L940] (unsigned long )arg == 0UL [2024-01-30 14:15:18,992 INFO L98 nessWitnessExtractor]: Location invariant before [L957-L957] num == 1 [2024-01-30 14:15:18,992 INFO L98 nessWitnessExtractor]: Location invariant before [L960-L960] num == 1 [2024-01-30 14:15:18,992 INFO L98 nessWitnessExtractor]: Location invariant before [L956-L956] num == 0 [2024-01-30 14:15:18,992 INFO L98 nessWitnessExtractor]: Location invariant before [L938-L938] (num == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:18,992 INFO L98 nessWitnessExtractor]: Location invariant before [L959-L959] num == 1 [2024-01-30 14:15:18,993 INFO L98 nessWitnessExtractor]: Location invariant after [L936-L937] (num == 1) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:18,993 INFO L98 nessWitnessExtractor]: Loop invariant at [L936-L937] ((0 <= num) && (num <= 1)) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:18,993 INFO L98 nessWitnessExtractor]: Location invariant before [L939-L939] (num == 1) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:18,993 INFO L98 nessWitnessExtractor]: Location invariant before [L951-L951] (unsigned long )arg == 0UL [2024-01-30 14:15:18,993 INFO L98 nessWitnessExtractor]: Location invariant before [L945-L945] (unsigned long )arg == 0UL [2024-01-30 14:15:18,994 INFO L98 nessWitnessExtractor]: Location invariant before [L958-L958] num == 1 [2024-01-30 14:15:18,994 INFO L98 nessWitnessExtractor]: Location invariant before [L948-L948] (num == 1) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:18,994 INFO L98 nessWitnessExtractor]: Location invariant before [L950-L950] (unsigned long )arg == 0UL [2024-01-30 14:15:18,994 INFO L98 nessWitnessExtractor]: Location invariant after [L946-L947] (num == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:18,994 INFO L98 nessWitnessExtractor]: Loop invariant at [L946-L947] ((0 <= num) && (num <= 1)) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:18,994 INFO L98 nessWitnessExtractor]: Location invariant before [L949-L949] (num == 0) && ((unsigned long )arg == 0UL) [2024-01-30 14:15:19,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:15:19,415 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i[42004,42017] [2024-01-30 14:15:19,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:15:19,434 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 [2024-01-30 14:15:19,522 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i[42004,42017] [2024-01-30 14:15:19,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:15:19,605 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:15:19,605 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19 WrapperNode [2024-01-30 14:15:19,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:15:19,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:15:19,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:15:19,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:15:19,614 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 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,635 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 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,655 INFO L138 Inliner]: procedures = 269, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2024-01-30 14:15:19,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:15:19,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:15:19,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:15:19,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:15:19,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,690 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 5, 8, 2, 8, 2]. 30 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 5, 8, 0, 8, 0]. The 2 writes are split as follows [0, 0, 0, 1, 0, 1]. [2024-01-30 14:15:19,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:15:19,716 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:15:19,716 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:15:19,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:15:19,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (1/1) ... [2024-01-30 14:15:19,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:15:19,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:15:19,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-30 14:15:19,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-30 14:15:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:15:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:15:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-30 14:15:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:15:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:15:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:15:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:15:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:15:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-30 14:15:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:15:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:15:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:15:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:15:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:15:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:15:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:15:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:15:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:15:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-30 14:15:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-30 14:15:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:15:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:15:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:15:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:15:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:15:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:15:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-30 14:15:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:15:19,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:15:19,785 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:15:19,920 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:15:19,922 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:15:20,151 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:15:20,152 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:15:20,334 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:15:20,335 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-30 14:15:20,336 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:15:20 BoogieIcfgContainer [2024-01-30 14:15:20,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:15:20,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:15:20,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:15:20,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:15:20,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:15:18" (1/4) ... [2024-01-30 14:15:20,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed17fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:15:20, skipping insertion in model container [2024-01-30 14:15:20,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:15:18" (2/4) ... [2024-01-30 14:15:20,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed17fca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:15:20, skipping insertion in model container [2024-01-30 14:15:20,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:15:19" (3/4) ... [2024-01-30 14:15:20,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed17fca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:15:20, skipping insertion in model container [2024-01-30 14:15:20,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:15:20" (4/4) ... [2024-01-30 14:15:20,347 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2024-01-30 14:15:20,365 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:15:20,366 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-01-30 14:15:20,366 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:15:20,458 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-30 14:15:20,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 76 transitions, 166 flow [2024-01-30 14:15:20,544 INFO L124 PetriNetUnfolderBase]: 3/74 cut-off events. [2024-01-30 14:15:20,545 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-30 14:15:20,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 74 events. 3/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-01-30 14:15:20,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 76 transitions, 166 flow [2024-01-30 14:15:20,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 71 transitions, 154 flow [2024-01-30 14:15:20,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:15:20,570 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;@6ebddb2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:15:20,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2024-01-30 14:15:20,574 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:15:20,574 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:15:20,575 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:15:20,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:20,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:15:20,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-01-30 14:15:20,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash 10593, now seen corresponding path program 1 times [2024-01-30 14:15:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653841312] [2024-01-30 14:15:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:20,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:20,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:20,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653841312] [2024-01-30 14:15:20,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653841312] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:20,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:20,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:15:20,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394260030] [2024-01-30 14:15:20,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:20,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:15:20,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:20,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:15:20,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:15:20,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 76 [2024-01-30 14:15:20,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:20,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:20,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 76 [2024-01-30 14:15:20,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:21,172 INFO L124 PetriNetUnfolderBase]: 339/883 cut-off events. [2024-01-30 14:15:21,173 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-30 14:15:21,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 883 events. 339/883 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5302 event pairs, 112 based on Foata normal form. 48/794 useless extension candidates. Maximal degree in co-relation 1361. Up to 320 conditions per place. [2024-01-30 14:15:21,186 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 40 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2024-01-30 14:15:21,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 273 flow [2024-01-30 14:15:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:15:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:15:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-01-30 14:15:21,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412280701754386 [2024-01-30 14:15:21,199 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 154 flow. Second operand 3 states and 169 transitions. [2024-01-30 14:15:21,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 273 flow [2024-01-30 14:15:21,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 263 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:15:21,215 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 184 flow [2024-01-30 14:15:21,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2024-01-30 14:15:21,222 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-01-30 14:15:21,222 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 184 flow [2024-01-30 14:15:21,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:21,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:21,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:15:21,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:15:21,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-01-30 14:15:21,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:21,224 INFO L85 PathProgramCache]: Analyzing trace with hash 328753, now seen corresponding path program 1 times [2024-01-30 14:15:21,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:21,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910199213] [2024-01-30 14:15:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:21,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:21,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910199213] [2024-01-30 14:15:21,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910199213] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:21,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:15:21,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422939245] [2024-01-30 14:15:21,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:21,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:15:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:21,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:15:21,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:15:21,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 76 [2024-01-30 14:15:21,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:21,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:21,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 76 [2024-01-30 14:15:21,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:21,385 INFO L124 PetriNetUnfolderBase]: 41/130 cut-off events. [2024-01-30 14:15:21,385 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-01-30 14:15:21,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 130 events. 41/130 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 501 event pairs, 31 based on Foata normal form. 28/124 useless extension candidates. Maximal degree in co-relation 229. Up to 76 conditions per place. [2024-01-30 14:15:21,386 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 14 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2024-01-30 14:15:21,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 106 flow [2024-01-30 14:15:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:15:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:15:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-01-30 14:15:21,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-01-30 14:15:21,389 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 184 flow. Second operand 3 states and 130 transitions. [2024-01-30 14:15:21,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 106 flow [2024-01-30 14:15:21,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 100 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:15:21,390 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 72 flow [2024-01-30 14:15:21,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-01-30 14:15:21,391 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -40 predicate places. [2024-01-30 14:15:21,392 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 72 flow [2024-01-30 14:15:21,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:21,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:21,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:21,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:15:21,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-01-30 14:15:21,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:21,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1260256184, now seen corresponding path program 1 times [2024-01-30 14:15:21,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:21,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207117009] [2024-01-30 14:15:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:21,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:21,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:21,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207117009] [2024-01-30 14:15:21,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207117009] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:21,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:21,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:15:21,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698809447] [2024-01-30 14:15:21,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:21,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:15:21,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:21,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:15:21,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:15:21,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 76 [2024-01-30 14:15:21,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:21,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:21,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 76 [2024-01-30 14:15:21,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:21,639 INFO L124 PetriNetUnfolderBase]: 50/163 cut-off events. [2024-01-30 14:15:21,639 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-01-30 14:15:21,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 163 events. 50/163 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 637 event pairs, 16 based on Foata normal form. 8/142 useless extension candidates. Maximal degree in co-relation 277. Up to 74 conditions per place. [2024-01-30 14:15:21,641 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 17 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-01-30 14:15:21,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 121 flow [2024-01-30 14:15:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:15:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:15:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-01-30 14:15:21,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-01-30 14:15:21,648 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 72 flow. Second operand 4 states and 200 transitions. [2024-01-30 14:15:21,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 121 flow [2024-01-30 14:15:21,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:15:21,652 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 73 flow [2024-01-30 14:15:21,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2024-01-30 14:15:21,653 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -39 predicate places. [2024-01-30 14:15:21,654 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 73 flow [2024-01-30 14:15:21,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:21,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:21,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:21,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:15:21,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-01-30 14:15:21,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash -76161404, now seen corresponding path program 1 times [2024-01-30 14:15:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:21,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610698326] [2024-01-30 14:15:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:21,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:21,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:21,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610698326] [2024-01-30 14:15:21,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610698326] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:21,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:21,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:15:21,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623389164] [2024-01-30 14:15:21,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:21,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:15:21,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:21,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:15:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:15:21,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 76 [2024-01-30 14:15:21,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:21,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:21,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 76 [2024-01-30 14:15:21,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:21,930 INFO L124 PetriNetUnfolderBase]: 45/153 cut-off events. [2024-01-30 14:15:21,930 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-01-30 14:15:21,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 153 events. 45/153 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 611 event pairs, 8 based on Foata normal form. 8/140 useless extension candidates. Maximal degree in co-relation 258. Up to 56 conditions per place. [2024-01-30 14:15:21,932 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 19 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-01-30 14:15:21,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 127 flow [2024-01-30 14:15:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:15:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:15:21,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-01-30 14:15:21,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6644736842105263 [2024-01-30 14:15:21,934 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 73 flow. Second operand 4 states and 202 transitions. [2024-01-30 14:15:21,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 127 flow [2024-01-30 14:15:21,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:15:21,935 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 72 flow [2024-01-30 14:15:21,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-01-30 14:15:21,936 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -39 predicate places. [2024-01-30 14:15:21,936 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 72 flow [2024-01-30 14:15:21,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:21,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:21,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:21,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:15:21,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-01-30 14:15:21,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:21,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1983216610, now seen corresponding path program 1 times [2024-01-30 14:15:21,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:21,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873794650] [2024-01-30 14:15:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:21,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:21,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:21,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873794650] [2024-01-30 14:15:21,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873794650] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:21,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:21,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:15:21,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103833506] [2024-01-30 14:15:21,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:21,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:15:21,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:15:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:15:22,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 76 [2024-01-30 14:15:22,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:22,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:22,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 76 [2024-01-30 14:15:22,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:22,131 INFO L124 PetriNetUnfolderBase]: 66/156 cut-off events. [2024-01-30 14:15:22,131 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-01-30 14:15:22,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 156 events. 66/156 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 570 event pairs, 11 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 329. Up to 95 conditions per place. [2024-01-30 14:15:22,133 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 22 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-01-30 14:15:22,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 131 flow [2024-01-30 14:15:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:15:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:15:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-01-30 14:15:22,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2024-01-30 14:15:22,135 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 72 flow. Second operand 4 states and 122 transitions. [2024-01-30 14:15:22,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 131 flow [2024-01-30 14:15:22,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:15:22,136 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 69 flow [2024-01-30 14:15:22,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=69, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-01-30 14:15:22,137 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -40 predicate places. [2024-01-30 14:15:22,137 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 69 flow [2024-01-30 14:15:22,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:22,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:22,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:22,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:15:22,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-01-30 14:15:22,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:22,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1181256049, now seen corresponding path program 1 times [2024-01-30 14:15:22,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:22,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990102228] [2024-01-30 14:15:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:22,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:15:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:15:22,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:15:22,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990102228] [2024-01-30 14:15:22,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990102228] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:15:22,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:15:22,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:15:22,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185252716] [2024-01-30 14:15:22,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:15:22,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:15:22,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:15:22,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:15:22,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:15:22,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 76 [2024-01-30 14:15:22,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:22,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:15:22,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 76 [2024-01-30 14:15:22,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:15:22,335 INFO L124 PetriNetUnfolderBase]: 77/172 cut-off events. [2024-01-30 14:15:22,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:15:22,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 172 events. 77/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 639 event pairs, 21 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 341. Up to 82 conditions per place. [2024-01-30 14:15:22,336 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 20 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-01-30 14:15:22,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 119 flow [2024-01-30 14:15:22,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:15:22,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:15:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-01-30 14:15:22,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40460526315789475 [2024-01-30 14:15:22,338 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 69 flow. Second operand 4 states and 123 transitions. [2024-01-30 14:15:22,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 119 flow [2024-01-30 14:15:22,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:15:22,339 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 68 flow [2024-01-30 14:15:22,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2024-01-30 14:15:22,340 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -40 predicate places. [2024-01-30 14:15:22,340 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 68 flow [2024-01-30 14:15:22,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:15:22,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:15:22,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:22,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:15:22,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-01-30 14:15:22,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:15:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1315683950, now seen corresponding path program 1 times [2024-01-30 14:15:22,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:15:22,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581420858] [2024-01-30 14:15:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:15:22,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:15:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:15:22,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-30 14:15:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:15:22,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-30 14:15:22,387 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-30 14:15:22,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 40 remaining) [2024-01-30 14:15:22,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 40 remaining) [2024-01-30 14:15:22,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 40 remaining) [2024-01-30 14:15:22,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 40 remaining) [2024-01-30 14:15:22,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 40 remaining) [2024-01-30 14:15:22,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 40 remaining) [2024-01-30 14:15:22,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 40 remaining) [2024-01-30 14:15:22,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 40 remaining) [2024-01-30 14:15:22,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 40 remaining) [2024-01-30 14:15:22,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 40 remaining) [2024-01-30 14:15:22,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 40 remaining) [2024-01-30 14:15:22,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 40 remaining) [2024-01-30 14:15:22,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 40 remaining) [2024-01-30 14:15:22,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 40 remaining) [2024-01-30 14:15:22,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 40 remaining) [2024-01-30 14:15:22,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 40 remaining) [2024-01-30 14:15:22,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 40 remaining) [2024-01-30 14:15:22,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 40 remaining) [2024-01-30 14:15:22,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 40 remaining) [2024-01-30 14:15:22,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 40 remaining) [2024-01-30 14:15:22,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 40 remaining) [2024-01-30 14:15:22,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 40 remaining) [2024-01-30 14:15:22,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (17 of 40 remaining) [2024-01-30 14:15:22,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 40 remaining) [2024-01-30 14:15:22,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 40 remaining) [2024-01-30 14:15:22,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 40 remaining) [2024-01-30 14:15:22,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 40 remaining) [2024-01-30 14:15:22,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 40 remaining) [2024-01-30 14:15:22,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 40 remaining) [2024-01-30 14:15:22,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 40 remaining) [2024-01-30 14:15:22,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 40 remaining) [2024-01-30 14:15:22,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 40 remaining) [2024-01-30 14:15:22,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 40 remaining) [2024-01-30 14:15:22,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 40 remaining) [2024-01-30 14:15:22,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 40 remaining) [2024-01-30 14:15:22,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 40 remaining) [2024-01-30 14:15:22,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 40 remaining) [2024-01-30 14:15:22,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 40 remaining) [2024-01-30 14:15:22,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 40 remaining) [2024-01-30 14:15:22,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 40 remaining) [2024-01-30 14:15:22,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:15:22,409 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:15:22,419 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:15:22,419 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:15:22,458 INFO L503 ceAbstractionStarter]: Automizer considered 21 witness invariants [2024-01-30 14:15:22,459 INFO L504 ceAbstractionStarter]: WitnessConsidered=21 [2024-01-30 14:15:22,459 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:15:22 BasicIcfg [2024-01-30 14:15:22,459 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:15:22,460 INFO L158 Benchmark]: Toolchain (without parser) took 3537.60ms. Allocated memory was 142.6MB in the beginning and 216.0MB in the end (delta: 73.4MB). Free memory was 85.9MB in the beginning and 145.2MB in the end (delta: -59.4MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2024-01-30 14:15:22,460 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 142.6MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:15:22,460 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:15:22,461 INFO L158 Benchmark]: CACSL2BoogieTranslator took 682.11ms. Allocated memory was 142.6MB in the beginning and 216.0MB in the end (delta: 73.4MB). Free memory was 85.9MB in the beginning and 182.2MB in the end (delta: -96.4MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2024-01-30 14:15:22,461 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.64ms. Allocated memory is still 216.0MB. Free memory was 182.2MB in the beginning and 180.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:15:22,461 INFO L158 Benchmark]: Boogie Preprocessor took 58.76ms. Allocated memory is still 216.0MB. Free memory was 180.1MB in the beginning and 177.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:15:22,462 INFO L158 Benchmark]: RCFGBuilder took 620.26ms. Allocated memory is still 216.0MB. Free memory was 177.0MB in the beginning and 133.0MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-01-30 14:15:22,462 INFO L158 Benchmark]: TraceAbstraction took 2120.84ms. Allocated memory is still 216.0MB. Free memory was 133.0MB in the beginning and 145.2MB in the end (delta: -12.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:15:22,463 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 142.6MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 682.11ms. Allocated memory was 142.6MB in the beginning and 216.0MB in the end (delta: 73.4MB). Free memory was 85.9MB in the beginning and 182.2MB in the end (delta: -96.4MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.64ms. Allocated memory is still 216.0MB. Free memory was 182.2MB in the beginning and 180.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.76ms. Allocated memory is still 216.0MB. Free memory was 180.1MB in the beginning and 177.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 620.26ms. Allocated memory is still 216.0MB. Free memory was 177.0MB in the beginning and 133.0MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2120.84ms. Allocated memory is still 216.0MB. Free memory was 133.0MB in the beginning and 145.2MB in the end (delta: -12.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 946]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L930] 0 int num; [L931] 0 pthread_mutex_t m; [L931] 0 pthread_mutex_t m; [L931] 0 pthread_mutex_t m; [L931] 0 pthread_mutex_t m; [L931] 0 pthread_mutex_t m; [L931] 0 pthread_mutex_t m; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L955] 0 pthread_t t1, t2; VAL [empty={4:0}, full={5:0}, m={3:0}, num=0, t1={6:0}, t2={7:0}] [L956] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[0]]]] [L956] 0 num = 1 VAL [empty={4:0}, full={5:0}, m={3:0}, num=1, t1={6:0}, t2={7:0}] [L957] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[1]]]] [L958] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[1]]]] VAL [empty={4:0}, full={5:0}, m={3:0}, num=1, t1={6:0}, t2={7:0}] [L959] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[1]]]] VAL [empty={4:0}, full={5:0}, m={3:0}, num=1, t1={6:0}, t2={7:0}] [L960] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[1]]]] [L960] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1, t1={6:0}, t2={7:0}] [L961] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1, t1={6:0}, t2={7:0}] [L945] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1] [L946] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[num]],BinaryExpression[COMPLEQ,IdentifierExpression[num],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1] [L946] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1] [L946] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[0]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1] - UnprovableResult [Line: 935]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 936]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 936]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 938]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 936]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 939]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 940]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 941]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 945]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 946]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 948]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 946]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 949]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 950]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 951]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 956]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 957]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 958]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 959]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 960]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 966]: 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: 960]: 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: 961]: 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 5 procedures, 126 locations, 40 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: 1.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 479 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 275 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 480 IncrementalHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 16 mSDtfsCounter, 480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=1, InterpolantAutomatonStates: 22, 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, 0.5s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 189 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2024-01-30 14:15:22,493 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