./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.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/13-privatized_18-first-reads_unknown_1_neg.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_18-first-reads_unknown_1_neg.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:36:05,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:36:05,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:36:05,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:36:05,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:36:05,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:36:05,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:36:05,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:36:05,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:36:05,939 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:36:05,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:36:05,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:36:05,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:36:05,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:36:05,941 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:36:05,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:36:05,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:36:05,942 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:36:05,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:36:05,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:36:05,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:36:05,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:36:05,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:36:05,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:36:05,944 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:36:05,945 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:36:05,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:36:05,945 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:36:05,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:36:05,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:36:05,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:36:05,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:36:05,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:36:05,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:36:05,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:36:05,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:36:05,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:36:05,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:36:05,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:36:05,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:36:05,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:36:05,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:36:05,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:36:05,950 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:36:06,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:36:06,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:36:06,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:36:06,238 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:36:06,238 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:36:06,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i [2024-02-02 09:36:07,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:36:07,687 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:36:07,687 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i [2024-02-02 09:36:07,701 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48b2b0fc3/ed2d65404ae74728bdc31851fdd9f87f/FLAG059d28f2c [2024-02-02 09:36:07,713 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48b2b0fc3/ed2d65404ae74728bdc31851fdd9f87f [2024-02-02 09:36:07,715 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:36:07,716 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:36:07,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_18-first-reads_unknown_1_neg.yml/witness.yml [2024-02-02 09:36:07,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:36:07,803 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:36:07,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:36:07,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:36:07,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:36:07,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:36:07" (1/2) ... [2024-02-02 09:36:07,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42106d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:36:07, skipping insertion in model container [2024-02-02 09:36:07,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:36:07" (1/2) ... [2024-02-02 09:36:07,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@22df2402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:36:07, skipping insertion in model container [2024-02-02 09:36:07,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:36:07" (2/2) ... [2024-02-02 09:36:07,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42106d2a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:07, skipping insertion in model container [2024-02-02 09:36:07,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:36:07" (2/2) ... [2024-02-02 09:36:07,823 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:36:07,881 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:36:07,883 INFO L101 nessWitnessExtractor]: Location invariant before [L687-L689] (glob1 == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:36:07,883 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] ((((((0 <= glob1) && (0 <= t)) && (glob1 <= 1)) && (t <= 1)) && ((unsigned long )arg == 0UL)) && (glob1 == 0 || glob1 == 1)) && (t == 0 || t == 1) [2024-02-02 09:36:07,883 INFO L101 nessWitnessExtractor]: Location invariant before [L693-L693] ((((0 <= t) && (t <= 1)) && (glob1 == 0)) && ((unsigned long )arg == 0UL)) && (t == 0 || t == 1) [2024-02-02 09:36:07,883 INFO L101 nessWitnessExtractor]: Location invariant before [L700-L700] glob1 == 0 [2024-02-02 09:36:07,883 INFO L101 nessWitnessExtractor]: Location invariant before [L690-L690] (((0 <= glob1) && (glob1 <= 1)) && ((unsigned long )arg == 0UL)) && (glob1 == 0 || glob1 == 1) [2024-02-02 09:36:07,884 INFO L101 nessWitnessExtractor]: Location invariant before [L686-L686] (unsigned long )arg == 0UL [2024-02-02 09:36:07,884 INFO L101 nessWitnessExtractor]: Location invariant before [L688-L688] ((glob1 == 0) && (t == 42)) && ((unsigned long )arg == 0UL) [2024-02-02 09:36:07,884 INFO L101 nessWitnessExtractor]: Location invariant before [L698-L698] glob1 == 0 [2024-02-02 09:36:07,885 INFO L101 nessWitnessExtractor]: Location invariant before [L692-L692] ((((((0 <= glob1) && (0 <= t)) && (glob1 <= 1)) && (t <= 1)) && ((unsigned long )arg == 0UL)) && (glob1 == 0 || glob1 == 1)) && (t == 0 || t == 1) [2024-02-02 09:36:07,885 INFO L101 nessWitnessExtractor]: Location invariant before [L694-L694] (((0 <= t) && (t <= 1)) && ((unsigned long )arg == 0UL)) && (t == 0 || t == 1) [2024-02-02 09:36:07,885 INFO L101 nessWitnessExtractor]: Location invariant before [L19-L19] ((((((((0 <= glob1) && (glob1 <= 1)) && (glob1 == 0 || glob1 == 1)) && (0 <= glob1)) && (glob1 <= 1)) && (glob1 == 0 || glob1 == 1)) && (0 <= glob1)) && (glob1 <= 1)) && (glob1 == 0 || glob1 == 1) [2024-02-02 09:36:07,885 INFO L101 nessWitnessExtractor]: Location invariant before [L685-L685] (unsigned long )arg == 0UL [2024-02-02 09:36:07,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:36:08,117 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i[1097,1110] [2024-02-02 09:36:08,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:36:08,260 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:36:08,276 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_unknown_1_neg.i[1097,1110] [2024-02-02 09:36:08,276 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int cond) { if(!(cond)) { ERROR: {reach_error();abort();} } } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:36:08,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:36:08,435 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:36:08,436 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08 WrapperNode [2024-02-02 09:36:08,436 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:36:08,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:36:08,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:36:08,438 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:36:08,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,489 INFO L138 Inliner]: procedures = 164, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2024-02-02 09:36:08,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:36:08,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:36:08,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:36:08,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:36:08,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,520 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-02-02 09:36:08,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:36:08,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:36:08,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:36:08,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:36:08,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (1/1) ... [2024-02-02 09:36:08,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:36:08,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:36:08,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-02 09:36:08,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-02 09:36:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:36:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:36:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:36:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:36:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:36:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:36:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:36:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:36:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:36:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-02 09:36:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-02 09:36:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:36:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:36:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:36:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:36:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:36:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:36:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:36:08,683 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:36:08,832 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:36:08,834 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:36:09,087 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:36:09,087 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:36:09,167 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:36:09,167 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:36:09,167 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:36:09 BoogieIcfgContainer [2024-02-02 09:36:09,168 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:36:09,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:36:09,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:36:09,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:36:09,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:36:07" (1/4) ... [2024-02-02 09:36:09,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc227ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:36:09, skipping insertion in model container [2024-02-02 09:36:09,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:36:07" (2/4) ... [2024-02-02 09:36:09,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc227ae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:36:09, skipping insertion in model container [2024-02-02 09:36:09,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:36:08" (3/4) ... [2024-02-02 09:36:09,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc227ae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:36:09, skipping insertion in model container [2024-02-02 09:36:09,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:36:09" (4/4) ... [2024-02-02 09:36:09,175 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_1_neg.i [2024-02-02 09:36:09,192 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:36:09,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-02-02 09:36:09,193 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:36:09,241 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-02 09:36:09,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 44 transitions, 95 flow [2024-02-02 09:36:09,308 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-02-02 09:36:09,308 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-02 09:36:09,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 43 events. 2/43 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-02-02 09:36:09,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 44 transitions, 95 flow [2024-02-02 09:36:09,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 41 transitions, 85 flow [2024-02-02 09:36:09,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:36:09,341 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;@1af4cef8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:36:09,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-02-02 09:36:09,345 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:36:09,345 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:36:09,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:36:09,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:36:09,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:36:09,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-02-02 09:36:09,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:36:09,351 INFO L85 PathProgramCache]: Analyzing trace with hash 6990, now seen corresponding path program 1 times [2024-02-02 09:36:09,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:36:09,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706581165] [2024-02-02 09:36:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:36:09,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:36:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:36:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:36:09,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:36:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706581165] [2024-02-02 09:36:09,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706581165] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:36:09,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:36:09,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:36:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371730546] [2024-02-02 09:36:09,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:36:09,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:36:09,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:36:09,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:36:09,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:36:09,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-02-02 09:36:09,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:09,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:36:09,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-02-02 09:36:09,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:36:09,770 INFO L124 PetriNetUnfolderBase]: 81/281 cut-off events. [2024-02-02 09:36:09,770 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:36:09,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 281 events. 81/281 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1413 event pairs, 53 based on Foata normal form. 13/271 useless extension candidates. Maximal degree in co-relation 459. Up to 137 conditions per place. [2024-02-02 09:36:09,775 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 25 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2024-02-02 09:36:09,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 157 flow [2024-02-02 09:36:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:36:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:36:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-02-02 09:36:09,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-02-02 09:36:09,788 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 85 flow. Second operand 3 states and 93 transitions. [2024-02-02 09:36:09,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 157 flow [2024-02-02 09:36:09,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:36:09,799 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 106 flow [2024-02-02 09:36:09,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-02-02 09:36:09,804 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-02-02 09:36:09,805 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 106 flow [2024-02-02 09:36:09,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:09,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:36:09,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:36:09,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:36:09,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-02-02 09:36:09,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:36:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash 208492308, now seen corresponding path program 1 times [2024-02-02 09:36:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:36:09,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226597408] [2024-02-02 09:36:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:36:09,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:36:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:36:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:36:09,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:36:09,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226597408] [2024-02-02 09:36:09,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226597408] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:36:09,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:36:09,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:36:09,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265879697] [2024-02-02 09:36:09,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:36:09,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:36:09,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:36:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:36:09,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:36:10,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 44 [2024-02-02 09:36:10,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:10,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:36:10,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 44 [2024-02-02 09:36:10,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:36:10,140 INFO L124 PetriNetUnfolderBase]: 64/259 cut-off events. [2024-02-02 09:36:10,140 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-02-02 09:36:10,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 259 events. 64/259 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1295 event pairs, 25 based on Foata normal form. 5/234 useless extension candidates. Maximal degree in co-relation 434. Up to 136 conditions per place. [2024-02-02 09:36:10,143 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 20 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-02-02 09:36:10,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 154 flow [2024-02-02 09:36:10,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:36:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:36:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-02-02 09:36:10,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2024-02-02 09:36:10,146 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 106 flow. Second operand 4 states and 111 transitions. [2024-02-02 09:36:10,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 154 flow [2024-02-02 09:36:10,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:36:10,148 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 98 flow [2024-02-02 09:36:10,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-02-02 09:36:10,150 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-02-02 09:36:10,151 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 98 flow [2024-02-02 09:36:10,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:10,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:36:10,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:36:10,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:36:10,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-02-02 09:36:10,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:36:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash -647019945, now seen corresponding path program 1 times [2024-02-02 09:36:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:36:10,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227341290] [2024-02-02 09:36:10,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:36:10,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:36:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:36:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:36:10,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:36:10,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227341290] [2024-02-02 09:36:10,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227341290] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:36:10,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:36:10,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:36:10,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022104221] [2024-02-02 09:36:10,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:36:10,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:36:10,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:36:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:36:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:36:10,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-02-02 09:36:10,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:10,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:36:10,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-02-02 09:36:10,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:36:10,473 INFO L124 PetriNetUnfolderBase]: 105/346 cut-off events. [2024-02-02 09:36:10,473 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-02-02 09:36:10,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 346 events. 105/346 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1798 event pairs, 9 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 630. Up to 140 conditions per place. [2024-02-02 09:36:10,477 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 34 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2024-02-02 09:36:10,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 218 flow [2024-02-02 09:36:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:36:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:36:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-02-02 09:36:10,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-02-02 09:36:10,479 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 98 flow. Second operand 4 states and 100 transitions. [2024-02-02 09:36:10,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 218 flow [2024-02-02 09:36:10,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:36:10,481 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 137 flow [2024-02-02 09:36:10,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-02-02 09:36:10,482 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-02-02 09:36:10,482 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 137 flow [2024-02-02 09:36:10,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:10,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:36:10,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:36:10,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:36:10,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-02-02 09:36:10,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:36:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash 984098266, now seen corresponding path program 1 times [2024-02-02 09:36:10,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:36:10,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754679507] [2024-02-02 09:36:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:36:10,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:36:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:36:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:36:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:36:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754679507] [2024-02-02 09:36:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754679507] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:36:10,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:36:10,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:36:10,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957949078] [2024-02-02 09:36:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:36:10,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:36:10,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:36:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:36:10,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:36:10,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-02-02 09:36:10,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:10,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:36:10,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-02-02 09:36:10,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:36:10,763 INFO L124 PetriNetUnfolderBase]: 115/350 cut-off events. [2024-02-02 09:36:10,763 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-02-02 09:36:10,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 350 events. 115/350 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1759 event pairs, 9 based on Foata normal form. 6/338 useless extension candidates. Maximal degree in co-relation 754. Up to 151 conditions per place. [2024-02-02 09:36:10,766 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 40 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-02-02 09:36:10,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 281 flow [2024-02-02 09:36:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:36:10,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:36:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-02-02 09:36:10,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-02-02 09:36:10,769 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 137 flow. Second operand 5 states and 105 transitions. [2024-02-02 09:36:10,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 281 flow [2024-02-02 09:36:10,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:36:10,772 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 143 flow [2024-02-02 09:36:10,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-02-02 09:36:10,773 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-02-02 09:36:10,773 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 143 flow [2024-02-02 09:36:10,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:10,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:36:10,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:36:10,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:36:10,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-02-02 09:36:10,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:36:10,774 INFO L85 PathProgramCache]: Analyzing trace with hash 442276438, now seen corresponding path program 1 times [2024-02-02 09:36:10,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:36:10,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532943334] [2024-02-02 09:36:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:36:10,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:36:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:36:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:36:10,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:36:10,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532943334] [2024-02-02 09:36:10,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532943334] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:36:10,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:36:10,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:36:10,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239976810] [2024-02-02 09:36:10,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:36:10,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:36:10,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:36:10,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:36:10,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:36:10,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-02-02 09:36:10,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:10,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:36:10,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-02-02 09:36:10,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:36:11,119 INFO L124 PetriNetUnfolderBase]: 156/435 cut-off events. [2024-02-02 09:36:11,119 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-02-02 09:36:11,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 435 events. 156/435 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2230 event pairs, 11 based on Foata normal form. 12/418 useless extension candidates. Maximal degree in co-relation 971. Up to 148 conditions per place. [2024-02-02 09:36:11,122 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 46 selfloop transitions, 9 changer transitions 5/67 dead transitions. [2024-02-02 09:36:11,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 331 flow [2024-02-02 09:36:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:36:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:36:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-02-02 09:36:11,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954545454545455 [2024-02-02 09:36:11,124 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 143 flow. Second operand 5 states and 109 transitions. [2024-02-02 09:36:11,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 331 flow [2024-02-02 09:36:11,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 313 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:36:11,127 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 165 flow [2024-02-02 09:36:11,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-02-02 09:36:11,128 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-02-02 09:36:11,128 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 165 flow [2024-02-02 09:36:11,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:11,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:36:11,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:36:11,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:36:11,129 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-02-02 09:36:11,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:36:11,130 INFO L85 PathProgramCache]: Analyzing trace with hash 442275413, now seen corresponding path program 1 times [2024-02-02 09:36:11,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:36:11,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095238688] [2024-02-02 09:36:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:36:11,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:36:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:36:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:36:11,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:36:11,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095238688] [2024-02-02 09:36:11,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095238688] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:36:11,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:36:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:36:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440581768] [2024-02-02 09:36:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:36:11,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:36:11,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:36:11,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:36:11,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:36:11,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2024-02-02 09:36:11,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:11,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:36:11,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2024-02-02 09:36:11,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:36:11,305 INFO L124 PetriNetUnfolderBase]: 96/324 cut-off events. [2024-02-02 09:36:11,306 INFO L125 PetriNetUnfolderBase]: For 185/187 co-relation queries the response was YES. [2024-02-02 09:36:11,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 324 events. 96/324 cut-off events. For 185/187 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1568 event pairs, 5 based on Foata normal form. 10/315 useless extension candidates. Maximal degree in co-relation 700. Up to 169 conditions per place. [2024-02-02 09:36:11,307 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 29 selfloop transitions, 3 changer transitions 2/47 dead transitions. [2024-02-02 09:36:11,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 221 flow [2024-02-02 09:36:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:36:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:36:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-02-02 09:36:11,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-02-02 09:36:11,309 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 165 flow. Second operand 4 states and 104 transitions. [2024-02-02 09:36:11,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 221 flow [2024-02-02 09:36:11,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 199 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-02 09:36:11,314 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 109 flow [2024-02-02 09:36:11,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-02-02 09:36:11,314 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-02-02 09:36:11,314 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 109 flow [2024-02-02 09:36:11,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:11,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:36:11,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:36:11,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:36:11,315 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-02-02 09:36:11,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:36:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash 825636156, now seen corresponding path program 1 times [2024-02-02 09:36:11,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:36:11,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590159660] [2024-02-02 09:36:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:36:11,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:36:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:36:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:36:11,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:36:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590159660] [2024-02-02 09:36:11,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590159660] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:36:11,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:36:11,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:36:11,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272487703] [2024-02-02 09:36:11,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:36:11,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:36:11,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:36:11,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:36:11,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:36:11,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-02-02 09:36:11,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:11,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:36:11,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-02-02 09:36:11,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:36:11,610 INFO L124 PetriNetUnfolderBase]: 86/272 cut-off events. [2024-02-02 09:36:11,610 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-02-02 09:36:11,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 272 events. 86/272 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1166 event pairs, 5 based on Foata normal form. 12/271 useless extension candidates. Maximal degree in co-relation 578. Up to 148 conditions per place. [2024-02-02 09:36:11,612 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 34 selfloop transitions, 4 changer transitions 1/48 dead transitions. [2024-02-02 09:36:11,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 211 flow [2024-02-02 09:36:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:36:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:36:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-02-02 09:36:11,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-02-02 09:36:11,614 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 109 flow. Second operand 5 states and 106 transitions. [2024-02-02 09:36:11,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 211 flow [2024-02-02 09:36:11,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 202 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-02 09:36:11,617 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 100 flow [2024-02-02 09:36:11,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2024-02-02 09:36:11,619 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-02-02 09:36:11,619 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 100 flow [2024-02-02 09:36:11,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:36:11,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:36:11,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:36:11,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:36:11,620 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2024-02-02 09:36:11,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:36:11,621 INFO L85 PathProgramCache]: Analyzing trace with hash -174097639, now seen corresponding path program 1 times [2024-02-02 09:36:11,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:36:11,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397358141] [2024-02-02 09:36:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:36:11,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:36:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:36:11,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:36:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:36:11,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:36:11,669 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:36:11,670 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr6ASSERT_VIOLATIONERROR_FUNCTION (22 of 23 remaining) [2024-02-02 09:36:11,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 23 remaining) [2024-02-02 09:36:11,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 23 remaining) [2024-02-02 09:36:11,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 23 remaining) [2024-02-02 09:36:11,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 23 remaining) [2024-02-02 09:36:11,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 23 remaining) [2024-02-02 09:36:11,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 23 remaining) [2024-02-02 09:36:11,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 23 remaining) [2024-02-02 09:36:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 23 remaining) [2024-02-02 09:36:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 23 remaining) [2024-02-02 09:36:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONERROR_FUNCTION (12 of 23 remaining) [2024-02-02 09:36:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 23 remaining) [2024-02-02 09:36:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 23 remaining) [2024-02-02 09:36:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 23 remaining) [2024-02-02 09:36:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 23 remaining) [2024-02-02 09:36:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 23 remaining) [2024-02-02 09:36:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 23 remaining) [2024-02-02 09:36:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 23 remaining) [2024-02-02 09:36:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 23 remaining) [2024-02-02 09:36:11,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 23 remaining) [2024-02-02 09:36:11,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 23 remaining) [2024-02-02 09:36:11,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 23 remaining) [2024-02-02 09:36:11,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 23 remaining) [2024-02-02 09:36:11,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:36:11,676 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:36:11,681 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:36:11,682 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:36:11,703 INFO L503 ceAbstractionStarter]: Automizer considered 11 witness invariants [2024-02-02 09:36:11,703 INFO L504 ceAbstractionStarter]: WitnessConsidered=11 [2024-02-02 09:36:11,704 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:36:11 BasicIcfg [2024-02-02 09:36:11,704 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:36:11,705 INFO L158 Benchmark]: Toolchain (without parser) took 3901.23ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 117.8MB in the beginning and 150.4MB in the end (delta: -32.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2024-02-02 09:36:11,705 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:36:11,705 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 165.7MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:36:11,705 INFO L158 Benchmark]: CACSL2BoogieTranslator took 632.18ms. Allocated memory is still 165.7MB. Free memory was 117.8MB in the beginning and 94.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-02-02 09:36:11,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.22ms. Allocated memory is still 165.7MB. Free memory was 94.7MB in the beginning and 92.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:36:11,706 INFO L158 Benchmark]: Boogie Preprocessor took 42.65ms. Allocated memory is still 165.7MB. Free memory was 92.6MB in the beginning and 90.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:36:11,706 INFO L158 Benchmark]: RCFGBuilder took 634.04ms. Allocated memory is still 165.7MB. Free memory was 90.5MB in the beginning and 112.6MB in the end (delta: -22.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-02-02 09:36:11,707 INFO L158 Benchmark]: TraceAbstraction took 2534.80ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 111.3MB in the beginning and 150.4MB in the end (delta: -39.0MB). Peak memory consumption was 601.0kB. Max. memory is 16.1GB. [2024-02-02 09:36:11,708 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 165.7MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 632.18ms. Allocated memory is still 165.7MB. Free memory was 117.8MB in the beginning and 94.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.22ms. Allocated memory is still 165.7MB. Free memory was 94.7MB in the beginning and 92.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.65ms. Allocated memory is still 165.7MB. Free memory was 92.6MB in the beginning and 90.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 634.04ms. Allocated memory is still 165.7MB. Free memory was 90.5MB in the beginning and 112.6MB in the end (delta: -22.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2534.80ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 111.3MB in the beginning and 150.4MB in the end (delta: -39.0MB). Peak memory consumption was 601.0kB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; VAL [glob1=0, id={5:0}, mutex1={3:0}] [L698] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[0]]]] [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={5:0}, mutex1={3:0}] [L685] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] [L685] 1 int t = __VERIFIER_nondet_int(); [L686] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, glob1=0, mutex1={3:0}, t=0] [L687] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[0]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, glob1=0, mutex1={3:0}, t=0] [L687] COND FALSE 1 !(t == 42) VAL [arg={0:0}, arg={0:0}, glob1=0, mutex1={3:0}, t=0] [L690] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[glob1]],BinaryExpression[COMPLEQ,IdentifierExpression[glob1],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[1]]]]]] [L690] 1 t = glob1 VAL [arg={0:0}, arg={0:0}, glob1=0, mutex1={3:0}, t=0] [L691] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[glob1]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[t]]],BinaryExpression[COMPLEQ,IdentifierExpression[glob1],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[t],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[glob1],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[t],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[t],IntegerLiteral[1]]]]]] [L691] CALL 1 __VERIFIER_assert(!(t == 0)) [L19] COND TRUE 1 !(cond) VAL [\old(cond)=0, cond=0, glob1=0, mutex1={3:0}] [L19] 1 reach_error() VAL [\old(cond)=0, cond=0, glob1=0, mutex1={3:0}] - UnprovableResult [Line: 698]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 698]: 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: 685]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 687]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 688]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 73 locations, 23 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: 2.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 433 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 299 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 576 IncrementalHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 32 mSDtfsCounter, 576 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=5, InterpolantAutomatonStates: 30, 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, 0.8s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 504 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-02 09:36:11,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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