./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp1x3.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8857f20b Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp1x3.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-8857f20-m [2024-01-29 22:56:02,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 22:56:02,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 22:56:02,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 22:56:02,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 22:56:02,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 22:56:02,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 22:56:02,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 22:56:02,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 22:56:02,526 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 22:56:02,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 22:56:02,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 22:56:02,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 22:56:02,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 22:56:02,528 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 22:56:02,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 22:56:02,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 22:56:02,529 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 22:56:02,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 22:56:02,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 22:56:02,530 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 22:56:02,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 22:56:02,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 22:56:02,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 22:56:02,531 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 22:56:02,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 22:56:02,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 22:56:02,531 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 22:56:02,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 22:56:02,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 22:56:02,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 22:56:02,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 22:56:02,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:56:02,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 22:56:02,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 22:56:02,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 22:56:02,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 22:56:02,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 22:56:02,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 22:56:02,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 22:56:02,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 22:56:02,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 22:56:02,535 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 22:56:02,536 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 22:56:02,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 22:56:02,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 22:56:02,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 22:56:02,783 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 22:56:02,784 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 22:56:02,785 INFO L431 ainManager$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/bench-exp1x3.wvr.yml/witness.yml [2024-01-29 22:56:02,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 22:56:02,879 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 22:56:02,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c [2024-01-29 22:56:03,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 22:56:04,192 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 22:56:04,193 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c [2024-01-29 22:56:04,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d5adb7b6/2547a3375153407f8bab5931df1c311c/FLAGea6e94622 [2024-01-29 22:56:04,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d5adb7b6/2547a3375153407f8bab5931df1c311c [2024-01-29 22:56:04,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 22:56:04,558 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 22:56:04,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 22:56:04,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 22:56:04,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 22:56:04,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:56:02" (1/2) ... [2024-01-29 22:56:04,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5217b7b3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:56:04, skipping insertion in model container [2024-01-29 22:56:04,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:56:02" (1/2) ... [2024-01-29 22:56:04,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e236f1c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:56:04, skipping insertion in model container [2024-01-29 22:56:04,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:56:04" (2/2) ... [2024-01-29 22:56:04,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5217b7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04, skipping insertion in model container [2024-01-29 22:56:04,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:56:04" (2/2) ... [2024-01-29 22:56:04,566 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 22:56:04,574 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 22:56:04,575 INFO L98 nessWitnessExtractor]: Location invariant after [L37-L43] n == 0U [2024-01-29 22:56:04,575 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] n == 0U [2024-01-29 22:56:04,575 INFO L98 nessWitnessExtractor]: Loop invariant at [L38-L40] (unsigned long )_argptr == 0UL [2024-01-29 22:56:04,575 INFO L98 nessWitnessExtractor]: Loop invariant at [L46-L48] (unsigned long )_argptr == 0UL [2024-01-29 22:56:04,575 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-29 22:56:04,575 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-29 22:56:04,575 INFO L98 nessWitnessExtractor]: Location invariant before [L39-L39] (unsigned long )_argptr == 0UL [2024-01-29 22:56:04,576 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] x2 == 0U [2024-01-29 22:56:04,576 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (x2 == 0U) && (n == 0U) [2024-01-29 22:56:04,576 INFO L98 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-01-29 22:56:04,576 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] ((0LL - (long long )x1) + (long long )x2 >= 0LL) && ((long long )x1 - (long long )x2 >= 0LL) [2024-01-29 22:56:04,576 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (((0LL - (long long )x1) + (long long )x2 >= 0LL) && ((long long )x1 - (long long )x2 >= 0LL)) && (x1 == 0U) [2024-01-29 22:56:04,576 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (((0LL - (long long )x1) + (long long )x2 >= 0LL) && ((long long )x1 - (long long )x2 >= 0LL)) && (n == 0U) [2024-01-29 22:56:04,576 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (0LL - (long long )x1) + (long long )x2 >= 0LL [2024-01-29 22:56:04,577 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] ((0LL - (long long )x1) + (long long )x2 >= 0LL) && ((long long )x1 + (long long )x2 >= 0LL) [2024-01-29 22:56:04,577 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] ((0LL - (long long )x1) + (long long )x2 >= 0LL) && ((0LL - (long long )x1) - (long long )x2 >= 0LL) [2024-01-29 22:56:04,577 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (((0LL - (long long )x1) + (long long )x2 >= 0LL) && ((long long )x1 - (long long )x2 >= 0LL)) && (x2 == 0U) [2024-01-29 22:56:04,591 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 22:56:04,712 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c[1875,1888] [2024-01-29 22:56:04,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:56:04,723 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:56:04,754 WARN L424 MainDispatcher]: Unable to annotate void* thread1(void* _argptr) { while (x1 < n) { x1 = x1 + x1; } return 0; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:56:04,788 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c[1875,1888] [2024-01-29 22:56:04,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:56:04,799 INFO L206 MainTranslator]: Completed translation [2024-01-29 22:56:04,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04 WrapperNode [2024-01-29 22:56:04,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 22:56:04,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 22:56:04,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 22:56:04,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 22:56:04,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,830 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-01-29 22:56:04,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 22:56:04,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 22:56:04,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 22:56:04,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 22:56:04,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,854 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-29 22:56:04,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 22:56:04,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 22:56:04,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 22:56:04,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 22:56:04,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (1/1) ... [2024-01-29 22:56:04,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:56:04,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:56:04,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-29 22:56:04,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-29 22:56:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 22:56:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-29 22:56:04,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-29 22:56:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-29 22:56:04,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-29 22:56:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 22:56:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 22:56:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 22:56:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 22:56:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 22:56:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 22:56:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 22:56:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 22:56:04,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 22:56:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 22:56:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 22:56:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 22:56:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 22:56:04,985 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 22:56:05,052 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 22:56:05,054 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 22:56:05,316 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 22:56:05,317 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 22:56:05,383 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 22:56:05,383 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-29 22:56:05,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:56:05 BoogieIcfgContainer [2024-01-29 22:56:05,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 22:56:05,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 22:56:05,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 22:56:05,388 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 22:56:05,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:56:02" (1/4) ... [2024-01-29 22:56:05,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47faa59 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:56:05, skipping insertion in model container [2024-01-29 22:56:05,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:56:04" (2/4) ... [2024-01-29 22:56:05,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47faa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:56:05, skipping insertion in model container [2024-01-29 22:56:05,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:56:04" (3/4) ... [2024-01-29 22:56:05,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47faa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:56:05, skipping insertion in model container [2024-01-29 22:56:05,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:56:05" (4/4) ... [2024-01-29 22:56:05,390 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c [2024-01-29 22:56:05,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 22:56:05,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-01-29 22:56:05,405 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 22:56:05,460 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 22:56:05,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 124 flow [2024-01-29 22:56:05,525 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-01-29 22:56:05,526 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 22:56:05,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 53 events. 2/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 83 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-01-29 22:56:05,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 124 flow [2024-01-29 22:56:05,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 52 transitions, 116 flow [2024-01-29 22:56:05,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:56:05,543 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;@f32a246, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:56:05,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-01-29 22:56:05,545 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:56:05,545 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:56:05,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:56:05,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:05,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:56:05,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:05,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash 8274, now seen corresponding path program 1 times [2024-01-29 22:56:05,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:05,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000791653] [2024-01-29 22:56:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:05,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:06,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:06,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000791653] [2024-01-29 22:56:06,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000791653] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:56:06,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:56:06,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:56:06,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015547369] [2024-01-29 22:56:06,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:56:06,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:56:06,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:56:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:56:06,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 55 [2024-01-29 22:56:06,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:06,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:06,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 55 [2024-01-29 22:56:06,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:06,197 INFO L124 PetriNetUnfolderBase]: 49/143 cut-off events. [2024-01-29 22:56:06,197 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-29 22:56:06,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 143 events. 49/143 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 596 event pairs, 45 based on Foata normal form. 5/123 useless extension candidates. Maximal degree in co-relation 196. Up to 100 conditions per place. [2024-01-29 22:56:06,201 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 17 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-01-29 22:56:06,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 142 flow [2024-01-29 22:56:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:56:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:56:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-01-29 22:56:06,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6787878787878788 [2024-01-29 22:56:06,214 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 116 flow. Second operand 3 states and 112 transitions. [2024-01-29 22:56:06,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 142 flow [2024-01-29 22:56:06,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 22:56:06,219 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 100 flow [2024-01-29 22:56:06,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2024-01-29 22:56:06,225 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -8 predicate places. [2024-01-29 22:56:06,225 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 100 flow [2024-01-29 22:56:06,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:06,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:06,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 22:56:06,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 22:56:06,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:06,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash -939923510, now seen corresponding path program 1 times [2024-01-29 22:56:06,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:06,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067326124] [2024-01-29 22:56:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:06,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:06,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:06,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067326124] [2024-01-29 22:56:06,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067326124] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:56:06,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:56:06,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:56:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252527320] [2024-01-29 22:56:06,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:56:06,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:56:06,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:06,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:56:06,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:56:06,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 55 [2024-01-29 22:56:06,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:06,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:06,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 55 [2024-01-29 22:56:06,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:06,450 INFO L124 PetriNetUnfolderBase]: 116/254 cut-off events. [2024-01-29 22:56:06,451 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 22:56:06,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 254 events. 116/254 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1075 event pairs, 72 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 438. Up to 186 conditions per place. [2024-01-29 22:56:06,453 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 21 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-01-29 22:56:06,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 144 flow [2024-01-29 22:56:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:56:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:56:06,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-01-29 22:56:06,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727272727272728 [2024-01-29 22:56:06,455 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 100 flow. Second operand 4 states and 126 transitions. [2024-01-29 22:56:06,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 144 flow [2024-01-29 22:56:06,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:56:06,457 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 98 flow [2024-01-29 22:56:06,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-01-29 22:56:06,457 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2024-01-29 22:56:06,458 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 98 flow [2024-01-29 22:56:06,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:06,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:06,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:06,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 22:56:06,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:06,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:06,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1925759334, now seen corresponding path program 1 times [2024-01-29 22:56:06,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:06,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788318174] [2024-01-29 22:56:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:06,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:06,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:06,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788318174] [2024-01-29 22:56:06,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788318174] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:56:06,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:56:06,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:56:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992668126] [2024-01-29 22:56:06,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:56:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:56:06,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:56:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:56:06,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-01-29 22:56:06,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:06,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:06,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-01-29 22:56:06,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:06,664 INFO L124 PetriNetUnfolderBase]: 116/252 cut-off events. [2024-01-29 22:56:06,664 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 22:56:06,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 252 events. 116/252 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1073 event pairs, 72 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 431. Up to 187 conditions per place. [2024-01-29 22:56:06,666 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 23 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-01-29 22:56:06,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 144 flow [2024-01-29 22:56:06,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:56:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:56:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-29 22:56:06,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-01-29 22:56:06,668 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 98 flow. Second operand 3 states and 105 transitions. [2024-01-29 22:56:06,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 144 flow [2024-01-29 22:56:06,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:56:06,669 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 92 flow [2024-01-29 22:56:06,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-01-29 22:56:06,670 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -12 predicate places. [2024-01-29 22:56:06,670 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 92 flow [2024-01-29 22:56:06,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:06,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:06,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:06,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 22:56:06,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:06,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash 494003557, now seen corresponding path program 1 times [2024-01-29 22:56:06,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:06,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066414520] [2024-01-29 22:56:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:06,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:06,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:06,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066414520] [2024-01-29 22:56:06,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066414520] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:56:06,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:56:06,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:56:06,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595439008] [2024-01-29 22:56:06,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:56:06,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:56:06,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:06,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:56:06,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:56:06,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 55 [2024-01-29 22:56:06,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:06,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:06,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 55 [2024-01-29 22:56:06,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:06,867 INFO L124 PetriNetUnfolderBase]: 82/201 cut-off events. [2024-01-29 22:56:06,868 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-29 22:56:06,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 201 events. 82/201 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 783 event pairs, 27 based on Foata normal form. 20/206 useless extension candidates. Maximal degree in co-relation 335. Up to 124 conditions per place. [2024-01-29 22:56:06,869 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 23 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-01-29 22:56:06,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 147 flow [2024-01-29 22:56:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:56:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:56:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-01-29 22:56:06,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6954545454545454 [2024-01-29 22:56:06,871 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 92 flow. Second operand 4 states and 153 transitions. [2024-01-29 22:56:06,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 147 flow [2024-01-29 22:56:06,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:56:06,872 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 84 flow [2024-01-29 22:56:06,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-01-29 22:56:06,873 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -15 predicate places. [2024-01-29 22:56:06,873 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 84 flow [2024-01-29 22:56:06,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:06,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:06,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:06,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 22:56:06,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:06,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:06,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2004636748, now seen corresponding path program 1 times [2024-01-29 22:56:06,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:06,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135836613] [2024-01-29 22:56:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:06,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:06,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:06,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135836613] [2024-01-29 22:56:06,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135836613] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:56:06,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:56:06,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:56:06,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000668792] [2024-01-29 22:56:06,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:56:06,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:56:06,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:06,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:56:06,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:56:06,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 55 [2024-01-29 22:56:06,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:06,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:06,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 55 [2024-01-29 22:56:06,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:07,027 INFO L124 PetriNetUnfolderBase]: 82/185 cut-off events. [2024-01-29 22:56:07,028 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-29 22:56:07,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 185 events. 82/185 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 692 event pairs, 9 based on Foata normal form. 20/200 useless extension candidates. Maximal degree in co-relation 308. Up to 106 conditions per place. [2024-01-29 22:56:07,029 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 26 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-01-29 22:56:07,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 151 flow [2024-01-29 22:56:07,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:56:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:56:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-01-29 22:56:07,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7090909090909091 [2024-01-29 22:56:07,030 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 84 flow. Second operand 4 states and 156 transitions. [2024-01-29 22:56:07,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 151 flow [2024-01-29 22:56:07,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:56:07,032 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 77 flow [2024-01-29 22:56:07,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-01-29 22:56:07,033 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -18 predicate places. [2024-01-29 22:56:07,033 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 77 flow [2024-01-29 22:56:07,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:07,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:07,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:07,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 22:56:07,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:07,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:07,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1414194734, now seen corresponding path program 1 times [2024-01-29 22:56:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:07,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710877980] [2024-01-29 22:56:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710877980] [2024-01-29 22:56:07,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710877980] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:56:07,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:56:07,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:56:07,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422330057] [2024-01-29 22:56:07,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:56:07,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:56:07,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:07,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:56:07,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:56:07,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 55 [2024-01-29 22:56:07,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:07,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:07,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 55 [2024-01-29 22:56:07,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:07,179 INFO L124 PetriNetUnfolderBase]: 113/247 cut-off events. [2024-01-29 22:56:07,180 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-29 22:56:07,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 247 events. 113/247 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1010 event pairs, 24 based on Foata normal form. 1/234 useless extension candidates. Maximal degree in co-relation 437. Up to 138 conditions per place. [2024-01-29 22:56:07,181 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 28 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-01-29 22:56:07,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 174 flow [2024-01-29 22:56:07,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:56:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:56:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-01-29 22:56:07,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2024-01-29 22:56:07,183 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 77 flow. Second operand 3 states and 122 transitions. [2024-01-29 22:56:07,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 174 flow [2024-01-29 22:56:07,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:56:07,184 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 99 flow [2024-01-29 22:56:07,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-01-29 22:56:07,185 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -17 predicate places. [2024-01-29 22:56:07,185 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 99 flow [2024-01-29 22:56:07,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:07,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:07,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:07,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 22:56:07,186 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:07,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1641680983, now seen corresponding path program 1 times [2024-01-29 22:56:07,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:07,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665732328] [2024-01-29 22:56:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:07,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:07,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:07,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:07,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665732328] [2024-01-29 22:56:07,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665732328] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:56:07,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:56:07,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 22:56:07,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798355289] [2024-01-29 22:56:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:56:07,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:56:07,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:07,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:56:07,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:56:07,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 55 [2024-01-29 22:56:07,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:07,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:07,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 55 [2024-01-29 22:56:07,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:07,409 INFO L124 PetriNetUnfolderBase]: 185/371 cut-off events. [2024-01-29 22:56:07,409 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-29 22:56:07,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 371 events. 185/371 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1590 event pairs, 30 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 773. Up to 114 conditions per place. [2024-01-29 22:56:07,411 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 47 selfloop transitions, 13 changer transitions 1/70 dead transitions. [2024-01-29 22:56:07,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 302 flow [2024-01-29 22:56:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:56:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:56:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-01-29 22:56:07,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7163636363636363 [2024-01-29 22:56:07,413 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 99 flow. Second operand 5 states and 197 transitions. [2024-01-29 22:56:07,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 302 flow [2024-01-29 22:56:07,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:56:07,415 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 170 flow [2024-01-29 22:56:07,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-01-29 22:56:07,415 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -10 predicate places. [2024-01-29 22:56:07,416 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 170 flow [2024-01-29 22:56:07,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:07,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:07,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:07,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 22:56:07,416 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:07,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:07,417 INFO L85 PathProgramCache]: Analyzing trace with hash -21133889, now seen corresponding path program 2 times [2024-01-29 22:56:07,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:07,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366238201] [2024-01-29 22:56:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:07,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:07,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:07,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366238201] [2024-01-29 22:56:07,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366238201] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:56:07,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:56:07,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 22:56:07,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424390402] [2024-01-29 22:56:07,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:56:07,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:56:07,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:07,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:56:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:56:07,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 55 [2024-01-29 22:56:07,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:07,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:07,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 55 [2024-01-29 22:56:07,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:07,629 INFO L124 PetriNetUnfolderBase]: 165/326 cut-off events. [2024-01-29 22:56:07,630 INFO L125 PetriNetUnfolderBase]: For 389/397 co-relation queries the response was YES. [2024-01-29 22:56:07,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 326 events. 165/326 cut-off events. For 389/397 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1345 event pairs, 17 based on Foata normal form. 6/324 useless extension candidates. Maximal degree in co-relation 917. Up to 95 conditions per place. [2024-01-29 22:56:07,632 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 40 selfloop transitions, 15 changer transitions 5/69 dead transitions. [2024-01-29 22:56:07,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 403 flow [2024-01-29 22:56:07,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:56:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:56:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 189 transitions. [2024-01-29 22:56:07,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6872727272727273 [2024-01-29 22:56:07,633 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 170 flow. Second operand 5 states and 189 transitions. [2024-01-29 22:56:07,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 403 flow [2024-01-29 22:56:07,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 403 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 22:56:07,637 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 275 flow [2024-01-29 22:56:07,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-01-29 22:56:07,637 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-01-29 22:56:07,638 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 275 flow [2024-01-29 22:56:07,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:07,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:07,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:07,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 22:56:07,638 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:07,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:07,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1500305418, now seen corresponding path program 1 times [2024-01-29 22:56:07,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:07,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512256459] [2024-01-29 22:56:07,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:07,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:07,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:07,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512256459] [2024-01-29 22:56:07,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512256459] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:56:07,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:56:07,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 22:56:07,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567105855] [2024-01-29 22:56:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:56:07,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:56:07,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:56:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:56:07,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 55 [2024-01-29 22:56:07,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:07,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:07,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 55 [2024-01-29 22:56:07,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:07,834 INFO L124 PetriNetUnfolderBase]: 177/371 cut-off events. [2024-01-29 22:56:07,834 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-01-29 22:56:07,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 371 events. 177/371 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1516 event pairs, 38 based on Foata normal form. 10/370 useless extension candidates. Maximal degree in co-relation 1203. Up to 147 conditions per place. [2024-01-29 22:56:07,836 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 60 selfloop transitions, 12 changer transitions 3/82 dead transitions. [2024-01-29 22:56:07,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 82 transitions, 567 flow [2024-01-29 22:56:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:56:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:56:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-01-29 22:56:07,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2024-01-29 22:56:07,837 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 275 flow. Second operand 5 states and 190 transitions. [2024-01-29 22:56:07,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 82 transitions, 567 flow [2024-01-29 22:56:07,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 563 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-29 22:56:07,841 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 342 flow [2024-01-29 22:56:07,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-01-29 22:56:07,841 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2024-01-29 22:56:07,842 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 342 flow [2024-01-29 22:56:07,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:07,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:07,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:07,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 22:56:07,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:07,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1392896578, now seen corresponding path program 2 times [2024-01-29 22:56:07,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:07,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611731031] [2024-01-29 22:56:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:07,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:07,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:07,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611731031] [2024-01-29 22:56:07,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611731031] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:56:07,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:56:07,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 22:56:07,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608556541] [2024-01-29 22:56:07,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:56:07,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:56:07,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:07,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:56:07,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:56:07,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 55 [2024-01-29 22:56:07,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:07,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:07,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 55 [2024-01-29 22:56:07,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:08,037 INFO L124 PetriNetUnfolderBase]: 145/304 cut-off events. [2024-01-29 22:56:08,038 INFO L125 PetriNetUnfolderBase]: For 1116/1126 co-relation queries the response was YES. [2024-01-29 22:56:08,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 304 events. 145/304 cut-off events. For 1116/1126 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1171 event pairs, 25 based on Foata normal form. 8/305 useless extension candidates. Maximal degree in co-relation 1099. Up to 133 conditions per place. [2024-01-29 22:56:08,039 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 46 selfloop transitions, 11 changer transitions 8/72 dead transitions. [2024-01-29 22:56:08,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 556 flow [2024-01-29 22:56:08,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:56:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:56:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-01-29 22:56:08,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6472727272727272 [2024-01-29 22:56:08,041 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 342 flow. Second operand 5 states and 178 transitions. [2024-01-29 22:56:08,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 556 flow [2024-01-29 22:56:08,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 540 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-29 22:56:08,044 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 378 flow [2024-01-29 22:56:08,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-01-29 22:56:08,046 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2024-01-29 22:56:08,046 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 378 flow [2024-01-29 22:56:08,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:08,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:08,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:08,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 22:56:08,047 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:08,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:08,047 INFO L85 PathProgramCache]: Analyzing trace with hash -485327765, now seen corresponding path program 1 times [2024-01-29 22:56:08,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:08,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076870994] [2024-01-29 22:56:08,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:08,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:08,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:08,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076870994] [2024-01-29 22:56:08,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076870994] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:56:08,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473842038] [2024-01-29 22:56:08,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:08,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:56:08,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:56:08,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:56:08,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-29 22:56:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:08,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-29 22:56:08,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:56:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:16,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:56:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:17,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473842038] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:56:17,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:56:17,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-01-29 22:56:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531063580] [2024-01-29 22:56:17,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:56:17,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-29 22:56:17,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:17,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-29 22:56:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-01-29 22:56:18,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:56:22,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:56:26,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:56:28,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:56:31,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:56:34,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:56:34,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-01-29 22:56:34,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 378 flow. Second operand has 17 states, 17 states have (on average 23.0) internal successors, (391), 17 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:34,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:34,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-01-29 22:56:34,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:40,772 INFO L124 PetriNetUnfolderBase]: 483/945 cut-off events. [2024-01-29 22:56:40,772 INFO L125 PetriNetUnfolderBase]: For 4320/4320 co-relation queries the response was YES. [2024-01-29 22:56:40,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3914 conditions, 945 events. 483/945 cut-off events. For 4320/4320 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4870 event pairs, 36 based on Foata normal form. 8/950 useless extension candidates. Maximal degree in co-relation 3844. Up to 201 conditions per place. [2024-01-29 22:56:40,778 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 118 selfloop transitions, 75 changer transitions 19/219 dead transitions. [2024-01-29 22:56:40,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 219 transitions, 1911 flow [2024-01-29 22:56:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-29 22:56:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-01-29 22:56:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 573 transitions. [2024-01-29 22:56:40,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209090909090909 [2024-01-29 22:56:40,780 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 378 flow. Second operand 20 states and 573 transitions. [2024-01-29 22:56:40,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 219 transitions, 1911 flow [2024-01-29 22:56:40,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 219 transitions, 1885 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-01-29 22:56:40,790 INFO L231 Difference]: Finished difference. Result has 91 places, 120 transitions, 1366 flow [2024-01-29 22:56:40,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1366, PETRI_PLACES=91, PETRI_TRANSITIONS=120} [2024-01-29 22:56:40,790 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-01-29 22:56:40,790 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 120 transitions, 1366 flow [2024-01-29 22:56:40,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 23.0) internal successors, (391), 17 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:40,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:40,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:40,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-29 22:56:41,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-01-29 22:56:41,003 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:41,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:41,004 INFO L85 PathProgramCache]: Analyzing trace with hash 528431667, now seen corresponding path program 2 times [2024-01-29 22:56:41,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:41,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049362430] [2024-01-29 22:56:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:41,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:41,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:41,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049362430] [2024-01-29 22:56:41,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049362430] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:56:41,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604964249] [2024-01-29 22:56:41,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-29 22:56:41,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:56:41,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:56:41,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:56:41,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-29 22:56:41,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-29 22:56:41,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 22:56:41,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-29 22:56:41,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:56:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:42,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:56:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:42,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604964249] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:56:42,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:56:42,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-01-29 22:56:42,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82888455] [2024-01-29 22:56:42,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:56:42,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-29 22:56:42,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:42,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-29 22:56:42,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-01-29 22:56:44,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:56:47,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-01-29 22:56:47,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 120 transitions, 1366 flow. Second operand has 15 states, 15 states have (on average 22.266666666666666) internal successors, (334), 15 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:47,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:47,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-01-29 22:56:47,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:51,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:56:56,012 INFO L124 PetriNetUnfolderBase]: 825/1604 cut-off events. [2024-01-29 22:56:56,013 INFO L125 PetriNetUnfolderBase]: For 11804/11804 co-relation queries the response was YES. [2024-01-29 22:56:56,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7960 conditions, 1604 events. 825/1604 cut-off events. For 11804/11804 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9646 event pairs, 106 based on Foata normal form. 4/1605 useless extension candidates. Maximal degree in co-relation 7900. Up to 630 conditions per place. [2024-01-29 22:56:56,028 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 159 selfloop transitions, 105 changer transitions 22/293 dead transitions. [2024-01-29 22:56:56,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 293 transitions, 3611 flow [2024-01-29 22:56:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-29 22:56:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-29 22:56:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 496 transitions. [2024-01-29 22:56:56,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.501010101010101 [2024-01-29 22:56:56,031 INFO L175 Difference]: Start difference. First operand has 91 places, 120 transitions, 1366 flow. Second operand 18 states and 496 transitions. [2024-01-29 22:56:56,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 293 transitions, 3611 flow [2024-01-29 22:56:56,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 293 transitions, 3251 flow, removed 175 selfloop flow, removed 4 redundant places. [2024-01-29 22:56:56,056 INFO L231 Difference]: Finished difference. Result has 111 places, 189 transitions, 2481 flow [2024-01-29 22:56:56,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2481, PETRI_PLACES=111, PETRI_TRANSITIONS=189} [2024-01-29 22:56:56,058 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 54 predicate places. [2024-01-29 22:56:56,058 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 189 transitions, 2481 flow [2024-01-29 22:56:56,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 22.266666666666666) internal successors, (334), 15 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:56,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:56,059 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:56,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-29 22:56:56,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-01-29 22:56:56,263 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:56,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:56,263 INFO L85 PathProgramCache]: Analyzing trace with hash -391840094, now seen corresponding path program 3 times [2024-01-29 22:56:56,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:56,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622334681] [2024-01-29 22:56:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:56:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:56,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:56:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622334681] [2024-01-29 22:56:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622334681] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:56:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505440959] [2024-01-29 22:56:56,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-29 22:56:56,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:56:56,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:56:56,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:56:56,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-29 22:56:56,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-01-29 22:56:56,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 22:56:56,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-29 22:56:56,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:56:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:57,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:56:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:56:57,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505440959] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:56:57,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:56:57,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 14 [2024-01-29 22:56:57,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517432612] [2024-01-29 22:56:57,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:56:57,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-29 22:56:57,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:56:57,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-29 22:56:57,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-01-29 22:56:57,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-01-29 22:56:57,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 189 transitions, 2481 flow. Second operand has 14 states, 14 states have (on average 26.071428571428573) internal successors, (365), 14 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:57,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:56:57,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-01-29 22:56:57,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:56:59,579 INFO L124 PetriNetUnfolderBase]: 1153/2228 cut-off events. [2024-01-29 22:56:59,579 INFO L125 PetriNetUnfolderBase]: For 22750/22750 co-relation queries the response was YES. [2024-01-29 22:56:59,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11936 conditions, 2228 events. 1153/2228 cut-off events. For 22750/22750 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13361 event pairs, 130 based on Foata normal form. 119/2344 useless extension candidates. Maximal degree in co-relation 11842. Up to 598 conditions per place. [2024-01-29 22:56:59,599 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 222 selfloop transitions, 160 changer transitions 1/392 dead transitions. [2024-01-29 22:56:59,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 392 transitions, 5349 flow [2024-01-29 22:56:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-29 22:56:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-29 22:56:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 679 transitions. [2024-01-29 22:56:59,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367588932806324 [2024-01-29 22:56:59,603 INFO L175 Difference]: Start difference. First operand has 111 places, 189 transitions, 2481 flow. Second operand 23 states and 679 transitions. [2024-01-29 22:56:59,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 392 transitions, 5349 flow [2024-01-29 22:56:59,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 392 transitions, 5293 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-01-29 22:56:59,663 INFO L231 Difference]: Finished difference. Result has 138 places, 261 transitions, 4131 flow [2024-01-29 22:56:59,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4131, PETRI_PLACES=138, PETRI_TRANSITIONS=261} [2024-01-29 22:56:59,664 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places. [2024-01-29 22:56:59,665 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 261 transitions, 4131 flow [2024-01-29 22:56:59,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.071428571428573) internal successors, (365), 14 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:56:59,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:56:59,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:56:59,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-29 22:56:59,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:56:59,878 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:56:59,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:56:59,879 INFO L85 PathProgramCache]: Analyzing trace with hash -184026120, now seen corresponding path program 4 times [2024-01-29 22:56:59,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:56:59,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376464485] [2024-01-29 22:56:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:56:59,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:56:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:57:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:57:00,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:57:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376464485] [2024-01-29 22:57:00,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376464485] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:57:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246562853] [2024-01-29 22:57:00,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-29 22:57:00,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:57:00,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:57:00,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:57:00,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-29 22:57:00,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-29 22:57:00,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 22:57:00,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-29 22:57:00,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:57:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:57:25,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:57:46,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:57:46,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246562853] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:57:46,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:57:46,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 15 [2024-01-29 22:57:46,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250685562] [2024-01-29 22:57:46,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:57:46,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-29 22:57:46,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:57:46,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-29 22:57:46,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=158, Unknown=11, NotChecked=0, Total=210 [2024-01-29 22:57:50,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:57:54,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:57:58,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:58:02,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:58:06,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:58:10,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:58:15,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:58:19,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:58:23,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:58:23,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-01-29 22:58:23,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 261 transitions, 4131 flow. Second operand has 15 states, 15 states have (on average 21.0) internal successors, (315), 15 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:58:23,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:58:23,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-01-29 22:58:23,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:58:27,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:58:57,631 INFO L124 PetriNetUnfolderBase]: 1049/2025 cut-off events. [2024-01-29 22:58:57,632 INFO L125 PetriNetUnfolderBase]: For 31018/31036 co-relation queries the response was YES. [2024-01-29 22:58:57,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12812 conditions, 2025 events. 1049/2025 cut-off events. For 31018/31036 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12064 event pairs, 45 based on Foata normal form. 34/2054 useless extension candidates. Maximal degree in co-relation 12705. Up to 637 conditions per place. [2024-01-29 22:58:57,651 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 183 selfloop transitions, 73 changer transitions 43/306 dead transitions. [2024-01-29 22:58:57,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 306 transitions, 4999 flow [2024-01-29 22:58:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-29 22:58:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-29 22:58:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2024-01-29 22:58:57,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351515151515152 [2024-01-29 22:58:57,658 INFO L175 Difference]: Start difference. First operand has 138 places, 261 transitions, 4131 flow. Second operand 15 states and 359 transitions. [2024-01-29 22:58:57,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 306 transitions, 4999 flow [2024-01-29 22:58:57,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 306 transitions, 4907 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-01-29 22:58:57,748 INFO L231 Difference]: Finished difference. Result has 147 places, 237 transitions, 3767 flow [2024-01-29 22:58:57,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3770, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3767, PETRI_PLACES=147, PETRI_TRANSITIONS=237} [2024-01-29 22:58:57,749 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 90 predicate places. [2024-01-29 22:58:57,749 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 237 transitions, 3767 flow [2024-01-29 22:58:57,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.0) internal successors, (315), 15 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:58:57,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:58:57,750 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:58:57,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-29 22:58:57,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:58:57,964 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:58:57,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:58:57,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1904034135, now seen corresponding path program 5 times [2024-01-29 22:58:57,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:58:57,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901440916] [2024-01-29 22:58:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:58:57,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:58:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:58:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:58:58,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:58:58,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901440916] [2024-01-29 22:58:58,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901440916] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:58:58,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764103300] [2024-01-29 22:58:58,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-29 22:58:58,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:58:58,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:58:58,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:58:58,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-29 22:58:58,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-01-29 22:58:58,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 22:58:58,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-29 22:58:58,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:58:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:58:58,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:58:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:58:59,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764103300] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:58:59,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:58:59,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 18 [2024-01-29 22:58:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070427168] [2024-01-29 22:58:59,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:58:59,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-29 22:58:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:58:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-29 22:58:59,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-01-29 22:59:00,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-01-29 22:59:00,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 237 transitions, 3767 flow. Second operand has 18 states, 18 states have (on average 23.444444444444443) internal successors, (422), 18 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:59:00,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:59:00,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-01-29 22:59:00,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:59:02,745 INFO L124 PetriNetUnfolderBase]: 1330/2552 cut-off events. [2024-01-29 22:59:02,745 INFO L125 PetriNetUnfolderBase]: For 45440/45440 co-relation queries the response was YES. [2024-01-29 22:59:02,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16944 conditions, 2552 events. 1330/2552 cut-off events. For 45440/45440 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 16083 event pairs, 62 based on Foata normal form. 33/2582 useless extension candidates. Maximal degree in co-relation 16834. Up to 1000 conditions per place. [2024-01-29 22:59:02,784 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 255 selfloop transitions, 182 changer transitions 7/451 dead transitions. [2024-01-29 22:59:02,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 451 transitions, 7517 flow [2024-01-29 22:59:02,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-01-29 22:59:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-01-29 22:59:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 795 transitions. [2024-01-29 22:59:02,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-01-29 22:59:02,791 INFO L175 Difference]: Start difference. First operand has 147 places, 237 transitions, 3767 flow. Second operand 30 states and 795 transitions. [2024-01-29 22:59:02,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 451 transitions, 7517 flow [2024-01-29 22:59:02,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 451 transitions, 7320 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-01-29 22:59:02,896 INFO L231 Difference]: Finished difference. Result has 178 places, 321 transitions, 5974 flow [2024-01-29 22:59:02,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3618, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5974, PETRI_PLACES=178, PETRI_TRANSITIONS=321} [2024-01-29 22:59:02,897 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 121 predicate places. [2024-01-29 22:59:02,897 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 321 transitions, 5974 flow [2024-01-29 22:59:02,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 23.444444444444443) internal successors, (422), 18 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:59:02,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:59:02,897 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:59:02,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-29 22:59:03,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-01-29 22:59:03,109 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:59:03,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:59:03,110 INFO L85 PathProgramCache]: Analyzing trace with hash -435181616, now seen corresponding path program 6 times [2024-01-29 22:59:03,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:59:03,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074265531] [2024-01-29 22:59:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:59:03,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:59:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:59:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:59:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074265531] [2024-01-29 22:59:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074265531] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:59:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039489079] [2024-01-29 22:59:03,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-29 22:59:03,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:59:03,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:59:03,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:59:03,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-29 22:59:03,426 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-01-29 22:59:03,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 22:59:03,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-29 22:59:03,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:59:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:03,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:59:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:04,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039489079] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:59:04,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:59:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 15 [2024-01-29 22:59:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483206451] [2024-01-29 22:59:04,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:59:04,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-29 22:59:04,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:59:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-29 22:59:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-01-29 22:59:04,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-01-29 22:59:04,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 321 transitions, 5974 flow. Second operand has 15 states, 15 states have (on average 22.866666666666667) internal successors, (343), 15 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:59:04,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:59:04,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-01-29 22:59:04,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:59:06,458 INFO L124 PetriNetUnfolderBase]: 1290/2494 cut-off events. [2024-01-29 22:59:06,458 INFO L125 PetriNetUnfolderBase]: For 60064/60064 co-relation queries the response was YES. [2024-01-29 22:59:06,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18224 conditions, 2494 events. 1290/2494 cut-off events. For 60064/60064 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15703 event pairs, 125 based on Foata normal form. 28/2517 useless extension candidates. Maximal degree in co-relation 18115. Up to 976 conditions per place. [2024-01-29 22:59:06,528 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 295 selfloop transitions, 53 changer transitions 26/383 dead transitions. [2024-01-29 22:59:06,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 383 transitions, 7594 flow [2024-01-29 22:59:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-29 22:59:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-29 22:59:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 405 transitions. [2024-01-29 22:59:06,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-01-29 22:59:06,538 INFO L175 Difference]: Start difference. First operand has 178 places, 321 transitions, 5974 flow. Second operand 16 states and 405 transitions. [2024-01-29 22:59:06,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 383 transitions, 7594 flow [2024-01-29 22:59:06,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 383 transitions, 6875 flow, removed 283 selfloop flow, removed 19 redundant places. [2024-01-29 22:59:06,692 INFO L231 Difference]: Finished difference. Result has 177 places, 312 transitions, 5499 flow [2024-01-29 22:59:06,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=5250, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5499, PETRI_PLACES=177, PETRI_TRANSITIONS=312} [2024-01-29 22:59:06,693 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 120 predicate places. [2024-01-29 22:59:06,693 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 312 transitions, 5499 flow [2024-01-29 22:59:06,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 22.866666666666667) internal successors, (343), 15 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:59:06,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:59:06,694 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:59:06,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-29 22:59:06,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-01-29 22:59:06,905 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:59:06,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:59:06,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1065409446, now seen corresponding path program 7 times [2024-01-29 22:59:06,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:59:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732663239] [2024-01-29 22:59:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:59:06,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:59:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:59:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:07,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:59:07,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732663239] [2024-01-29 22:59:07,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732663239] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:59:07,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422661791] [2024-01-29 22:59:07,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-29 22:59:07,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:59:07,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:59:07,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:59:07,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-29 22:59:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:59:07,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-29 22:59:07,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:59:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:07,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:59:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:07,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422661791] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:59:07,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:59:07,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 15 [2024-01-29 22:59:07,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130791537] [2024-01-29 22:59:07,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:59:07,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-29 22:59:07,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:59:07,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-29 22:59:07,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-01-29 22:59:08,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-01-29 22:59:08,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 312 transitions, 5499 flow. Second operand has 15 states, 15 states have (on average 24.0) internal successors, (360), 15 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:59:08,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:59:08,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-01-29 22:59:08,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:59:09,971 INFO L124 PetriNetUnfolderBase]: 1262/2415 cut-off events. [2024-01-29 22:59:09,971 INFO L125 PetriNetUnfolderBase]: For 51456/51456 co-relation queries the response was YES. [2024-01-29 22:59:09,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17288 conditions, 2415 events. 1262/2415 cut-off events. For 51456/51456 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 14657 event pairs, 116 based on Foata normal form. 44/2456 useless extension candidates. Maximal degree in co-relation 17193. Up to 1121 conditions per place. [2024-01-29 22:59:09,990 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 231 selfloop transitions, 173 changer transitions 0/411 dead transitions. [2024-01-29 22:59:09,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 411 transitions, 7481 flow [2024-01-29 22:59:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-01-29 22:59:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-01-29 22:59:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 502 transitions. [2024-01-29 22:59:09,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48038277511961724 [2024-01-29 22:59:09,992 INFO L175 Difference]: Start difference. First operand has 177 places, 312 transitions, 5499 flow. Second operand 19 states and 502 transitions. [2024-01-29 22:59:09,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 411 transitions, 7481 flow [2024-01-29 22:59:10,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 411 transitions, 7295 flow, removed 69 selfloop flow, removed 10 redundant places. [2024-01-29 22:59:10,112 INFO L231 Difference]: Finished difference. Result has 187 places, 332 transitions, 6429 flow [2024-01-29 22:59:10,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=5140, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6429, PETRI_PLACES=187, PETRI_TRANSITIONS=332} [2024-01-29 22:59:10,113 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 130 predicate places. [2024-01-29 22:59:10,113 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 332 transitions, 6429 flow [2024-01-29 22:59:10,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.0) internal successors, (360), 15 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:59:10,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:59:10,114 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:59:10,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-29 22:59:10,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:59:10,325 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:59:10,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:59:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash -98463315, now seen corresponding path program 8 times [2024-01-29 22:59:10,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:59:10,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136568016] [2024-01-29 22:59:10,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:59:10,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:59:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:59:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:10,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:59:10,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136568016] [2024-01-29 22:59:10,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136568016] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:59:10,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582235331] [2024-01-29 22:59:10,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-29 22:59:10,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:59:10,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:59:10,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:59:10,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-29 22:59:10,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-29 22:59:10,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 22:59:10,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-29 22:59:10,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:59:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:12,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:59:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:12,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582235331] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:59:12,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:59:12,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 15 [2024-01-29 22:59:12,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655835213] [2024-01-29 22:59:12,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:59:12,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-29 22:59:12,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:59:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-29 22:59:12,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-01-29 22:59:16,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:59:17,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-01-29 22:59:17,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 332 transitions, 6429 flow. Second operand has 15 states, 15 states have (on average 25.933333333333334) internal successors, (389), 15 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:59:17,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:59:17,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-01-29 22:59:17,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:59:21,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 22:59:23,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:59:28,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:59:32,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:59:36,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 22:59:37,975 INFO L124 PetriNetUnfolderBase]: 1303/2497 cut-off events. [2024-01-29 22:59:37,975 INFO L125 PetriNetUnfolderBase]: For 62568/62568 co-relation queries the response was YES. [2024-01-29 22:59:37,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19227 conditions, 2497 events. 1303/2497 cut-off events. For 62568/62568 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15189 event pairs, 124 based on Foata normal form. 42/2536 useless extension candidates. Maximal degree in co-relation 19100. Up to 1470 conditions per place. [2024-01-29 22:59:38,003 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 257 selfloop transitions, 146 changer transitions 3/415 dead transitions. [2024-01-29 22:59:38,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 415 transitions, 8522 flow [2024-01-29 22:59:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-29 22:59:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-29 22:59:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 475 transitions. [2024-01-29 22:59:38,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080213903743316 [2024-01-29 22:59:38,018 INFO L175 Difference]: Start difference. First operand has 187 places, 332 transitions, 6429 flow. Second operand 17 states and 475 transitions. [2024-01-29 22:59:38,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 415 transitions, 8522 flow [2024-01-29 22:59:38,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 415 transitions, 8192 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-01-29 22:59:38,242 INFO L231 Difference]: Finished difference. Result has 196 places, 349 transitions, 7002 flow [2024-01-29 22:59:38,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=5939, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7002, PETRI_PLACES=196, PETRI_TRANSITIONS=349} [2024-01-29 22:59:38,243 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 139 predicate places. [2024-01-29 22:59:38,243 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 349 transitions, 7002 flow [2024-01-29 22:59:38,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.933333333333334) internal successors, (389), 15 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:59:38,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:59:38,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:59:38,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-01-29 22:59:38,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-01-29 22:59:38,455 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 22:59:38,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:59:38,455 INFO L85 PathProgramCache]: Analyzing trace with hash 47383702, now seen corresponding path program 9 times [2024-01-29 22:59:38,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:59:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057123975] [2024-01-29 22:59:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:59:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:59:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:59:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:39,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:59:39,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057123975] [2024-01-29 22:59:39,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057123975] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:59:39,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134381967] [2024-01-29 22:59:39,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-29 22:59:39,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:59:39,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:59:39,520 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:59:39,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-29 22:59:39,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-29 22:59:39,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 22:59:39,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2024-01-29 22:59:39,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:59:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:49,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:59:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:59:59,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134381967] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:59:59,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:59:59,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2024-01-29 22:59:59,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361059534] [2024-01-29 22:59:59,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:59:59,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-01-29 22:59:59,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:59:59,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-01-29 22:59:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=453, Unknown=1, NotChecked=0, Total=552 [2024-01-29 23:00:04,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:07,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:08,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:11,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:15,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:21,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:25,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:29,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:33,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:37,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:42,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:00:42,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-01-29 23:00:42,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 349 transitions, 7002 flow. Second operand has 24 states, 24 states have (on average 19.625) internal successors, (471), 24 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:00:42,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:00:42,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-01-29 23:00:42,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:01:06,216 WARN L293 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 96 DAG size of output: 81 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-29 23:01:12,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:13,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:15,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:17,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:22,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:27,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:32,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:34,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:43,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:44,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:46,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:53,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:01:56,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:02:01,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:02:03,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:02:06,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:02:10,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:02:14,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:02:21,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:02:27,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:02:30,026 INFO L124 PetriNetUnfolderBase]: 1659/3244 cut-off events. [2024-01-29 23:02:30,026 INFO L125 PetriNetUnfolderBase]: For 84909/84909 co-relation queries the response was YES. [2024-01-29 23:02:30,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25135 conditions, 3244 events. 1659/3244 cut-off events. For 84909/84909 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 21426 event pairs, 72 based on Foata normal form. 8/3249 useless extension candidates. Maximal degree in co-relation 25004. Up to 1187 conditions per place. [2024-01-29 23:02:30,204 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 223 selfloop transitions, 315 changer transitions 33/578 dead transitions. [2024-01-29 23:02:30,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 578 transitions, 11105 flow [2024-01-29 23:02:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-01-29 23:02:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-01-29 23:02:30,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 812 transitions. [2024-01-29 23:02:30,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43422459893048126 [2024-01-29 23:02:30,209 INFO L175 Difference]: Start difference. First operand has 196 places, 349 transitions, 7002 flow. Second operand 34 states and 812 transitions. [2024-01-29 23:02:30,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 578 transitions, 11105 flow [2024-01-29 23:02:30,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 578 transitions, 10798 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-01-29 23:02:30,593 INFO L231 Difference]: Finished difference. Result has 229 places, 425 transitions, 9743 flow [2024-01-29 23:02:30,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=6740, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9743, PETRI_PLACES=229, PETRI_TRANSITIONS=425} [2024-01-29 23:02:30,596 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 172 predicate places. [2024-01-29 23:02:30,596 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 425 transitions, 9743 flow [2024-01-29 23:02:30,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.625) internal successors, (471), 24 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:02:30,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:02:30,597 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 23:02:30,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-01-29 23:02:30,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 23:02:30,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-29 23:02:30,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:02:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1385654492, now seen corresponding path program 10 times [2024-01-29 23:02:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:02:30,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617851369] [2024-01-29 23:02:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:02:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:02:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:02:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:02:31,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:02:31,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617851369] [2024-01-29 23:02:31,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617851369] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 23:02:31,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428162934] [2024-01-29 23:02:31,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-29 23:02:31,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 23:02:31,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 23:02:31,565 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 23:02:31,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-29 23:02:31,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-29 23:02:31,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-29 23:02:31,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-29 23:02:31,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 23:02:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:02:48,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 23:02:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:02:58,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428162934] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 23:02:58,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 23:02:58,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 26 [2024-01-29 23:02:58,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435290122] [2024-01-29 23:02:58,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 23:02:58,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-01-29 23:02:58,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:02:58,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-01-29 23:02:58,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=477, Unknown=1, NotChecked=0, Total=650 [2024-01-29 23:03:04,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:03:08,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:03:12,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:03:18,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:03:21,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:03:27,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:03:32,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:03:32,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-01-29 23:03:32,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 425 transitions, 9743 flow. Second operand has 26 states, 26 states have (on average 19.346153846153847) internal successors, (503), 26 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:03:32,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:03:32,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-01-29 23:03:32,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:04:08,182 WARN L293 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 90 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-29 23:04:26,335 WARN L293 SmtUtils]: Spent 14.07s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-29 23:05:57,956 WARN L293 SmtUtils]: Spent 1.41m on a formula simplification. DAG size of input: 96 DAG size of output: 89 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-29 23:06:03,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:06:11,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:06:15,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:09,038 WARN L293 SmtUtils]: Spent 53.21s on a formula simplification. DAG size of input: 93 DAG size of output: 86 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-29 23:07:15,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:16,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:21,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:25,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:30,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:31,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:35,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:39,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:44,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:48,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:07:52,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:08:11,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:08:15,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:08:23,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:08:26,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:08:35,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:08:40,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:08:51,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:08:55,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:08:56,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:02,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:04,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:07,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:08,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:13,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:17,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:21,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:25,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:28,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:32,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:34,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:38,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:09:40,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:10:04,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:10:06,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:10:12,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:10:16,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-29 23:10:20,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:10:23,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:10:28,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:10:29,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-29 23:10:35,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15