./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-semi1.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-semi1.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-ab2e0ac-m [2024-01-29 14:20:35,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:20:35,098 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:20:35,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:20:35,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:20:35,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:20:35,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:20:35,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:20:35,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:20:35,141 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:20:35,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:20:35,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:20:35,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:20:35,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:20:35,143 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:20:35,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:20:35,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:20:35,144 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:20:35,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:20:35,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:20:35,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:20:35,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:20:35,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:20:35,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:20:35,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:20:35,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:20:35,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:20:35,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:20:35,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:20:35,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:20:35,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:20:35,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:20:35,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:20:35,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:20:35,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:20:35,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:20:35,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:20:35,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:20:35,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:20:35,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:20:35,149 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:20:35,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:20:35,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:20:35,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:20:35,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:20:35,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:20:35,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:20:35,410 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:20:35,410 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:20:35,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-semi1.wvr.yml/witness.yml [2024-01-29 14:20:35,488 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:20:35,489 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:20:35,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c [2024-01-29 14:20:36,446 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:20:36,578 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:20:36,579 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c [2024-01-29 14:20:36,585 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9147ea6c9/06eb37f44b394d5e98870972dd3a724c/FLAGde1decf11 [2024-01-29 14:20:36,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9147ea6c9/06eb37f44b394d5e98870972dd3a724c [2024-01-29 14:20:36,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:20:36,596 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:20:36,597 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:20:36,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:20:36,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:20:36,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:20:35" (1/2) ... [2024-01-29 14:20:36,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59846840 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:20:36, skipping insertion in model container [2024-01-29 14:20:36,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:20:35" (1/2) ... [2024-01-29 14:20:36,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@755f41f8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:20:36, skipping insertion in model container [2024-01-29 14:20:36,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:20:36" (2/2) ... [2024-01-29 14:20:36,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59846840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36, skipping insertion in model container [2024-01-29 14:20:36,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:20:36" (2/2) ... [2024-01-29 14:20:36,605 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:20:36,618 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:20:36,618 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-29 14:20:36,619 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] x <= 2147483646 [2024-01-29 14:20:36,619 INFO L98 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-01-29 14:20:36,619 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] y == 0 [2024-01-29 14:20:36,619 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-29 14:20:36,619 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] y == 0 [2024-01-29 14:20:36,619 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-01-29 14:20:36,619 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-29 14:20:36,619 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-29 14:20:36,620 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-01-29 14:20:36,620 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] -2147483647 <= x [2024-01-29 14:20:36,620 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-29 14:20:36,620 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] y == 0 [2024-01-29 14:20:36,620 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] x == 0 [2024-01-29 14:20:36,620 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] (unsigned long )_argptr == 0UL [2024-01-29 14:20:36,634 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:20:36,785 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c[2005,2018] [2024-01-29 14:20:36,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:20:36,795 INFO L202 MainTranslator]: Completed pre-run [2024-01-29 14:20:36,803 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:20:36,831 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c[2005,2018] [2024-01-29 14:20:36,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:20:36,841 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:20:36,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36 WrapperNode [2024-01-29 14:20:36,842 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:20:36,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:20:36,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:20:36,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:20:36,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,870 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 82 [2024-01-29 14:20:36,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:20:36,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:20:36,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:20:36,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:20:36,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,889 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 14:20:36,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,894 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:20:36,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:20:36,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:20:36,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:20:36,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (1/1) ... [2024-01-29 14:20:36,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:20:36,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:20:36,931 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 14:20:36,940 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 14:20:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:20:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-29 14:20:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-29 14:20:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-29 14:20:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-29 14:20:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:20:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:20:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 14:20:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:20:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:20:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:20:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 14:20:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-29 14:20:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-29 14:20:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:20:36,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:20:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 14:20:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 14:20:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 14:20:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:20:37,000 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 14:20:37,082 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:20:37,084 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:20:37,248 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:20:37,248 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:20:37,379 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:20:37,386 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-29 14:20:37,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:20:37 BoogieIcfgContainer [2024-01-29 14:20:37,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:20:37,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:20:37,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:20:37,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:20:37,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:20:35" (1/4) ... [2024-01-29 14:20:37,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21494cc2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:20:37, skipping insertion in model container [2024-01-29 14:20:37,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:20:36" (2/4) ... [2024-01-29 14:20:37,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21494cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:20:37, skipping insertion in model container [2024-01-29 14:20:37,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:20:36" (3/4) ... [2024-01-29 14:20:37,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21494cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:20:37, skipping insertion in model container [2024-01-29 14:20:37,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:20:37" (4/4) ... [2024-01-29 14:20:37,395 INFO L112 eAbstractionObserver]: Analyzing ICFG test-semi1.wvr.c [2024-01-29 14:20:37,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:20:37,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-01-29 14:20:37,409 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:20:37,457 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 14:20:37,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 38 transitions, 90 flow [2024-01-29 14:20:37,504 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2024-01-29 14:20:37,504 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:20:37,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 0/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 58 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-29 14:20:37,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 38 transitions, 90 flow [2024-01-29 14:20:37,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 35 transitions, 82 flow [2024-01-29 14:20:37,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:20:37,520 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;@79aee50c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:20:37,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-01-29 14:20:37,522 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:20:37,522 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 14:20:37,522 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:20:37,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:37,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 14:20:37,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-29 14:20:37,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash 9552, now seen corresponding path program 1 times [2024-01-29 14:20:37,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:37,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401045637] [2024-01-29 14:20:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:37,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:37,661 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 14:20:37,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:37,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401045637] [2024-01-29 14:20:37,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401045637] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:37,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:37,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:20:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380196085] [2024-01-29 14:20:37,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:37,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:20:37,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:20:37,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:20:37,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-01-29 14:20:37,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 14:20:37,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:37,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-01-29 14:20:37,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:37,800 INFO L124 PetriNetUnfolderBase]: 72/171 cut-off events. [2024-01-29 14:20:37,800 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-01-29 14:20:37,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 171 events. 72/171 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 826 event pairs, 72 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 276. Up to 147 conditions per place. [2024-01-29 14:20:37,805 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-01-29 14:20:37,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 114 flow [2024-01-29 14:20:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:20:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:20:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-01-29 14:20:37,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-01-29 14:20:37,817 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 82 flow. Second operand 3 states and 63 transitions. [2024-01-29 14:20:37,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 114 flow [2024-01-29 14:20:37,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 14:20:37,823 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 70 flow [2024-01-29 14:20:37,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-01-29 14:20:37,828 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2024-01-29 14:20:37,828 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 70 flow [2024-01-29 14:20:37,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 14:20:37,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:37,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-29 14:20:37,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:20:37,829 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-29 14:20:37,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:37,832 INFO L85 PathProgramCache]: Analyzing trace with hash 296409, now seen corresponding path program 1 times [2024-01-29 14:20:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:37,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673924934] [2024-01-29 14:20:37,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:37,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:37,875 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 14:20:37,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:37,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673924934] [2024-01-29 14:20:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673924934] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:37,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:20:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094006527] [2024-01-29 14:20:37,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:37,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:20:37,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:20:37,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:20:37,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-01-29 14:20:37,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 14:20:37,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:37,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-01-29 14:20:37,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:37,962 INFO L124 PetriNetUnfolderBase]: 72/169 cut-off events. [2024-01-29 14:20:37,963 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:20:37,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 169 events. 72/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 833 event pairs, 72 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 317. Up to 146 conditions per place. [2024-01-29 14:20:37,965 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 17 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-01-29 14:20:37,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 104 flow [2024-01-29 14:20:37,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:20:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:20:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-01-29 14:20:37,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-01-29 14:20:37,969 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 70 flow. Second operand 3 states and 60 transitions. [2024-01-29 14:20:37,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 104 flow [2024-01-29 14:20:37,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:37,970 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 66 flow [2024-01-29 14:20:37,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-01-29 14:20:37,972 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2024-01-29 14:20:37,973 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 66 flow [2024-01-29 14:20:37,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 14:20:37,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:37,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:37,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:20:37,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-29 14:20:37,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1129518804, now seen corresponding path program 1 times [2024-01-29 14:20:37,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:37,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472057206] [2024-01-29 14:20:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:37,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:38,150 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 14:20:38,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:38,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472057206] [2024-01-29 14:20:38,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472057206] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:38,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:38,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:20:38,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263903888] [2024-01-29 14:20:38,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:38,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:20:38,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:20:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:20:38,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-01-29 14:20:38,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 14:20:38,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:38,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-01-29 14:20:38,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:38,265 INFO L124 PetriNetUnfolderBase]: 72/165 cut-off events. [2024-01-29 14:20:38,265 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-29 14:20:38,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 165 events. 72/165 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 652 event pairs, 36 based on Foata normal form. 12/138 useless extension candidates. Maximal degree in co-relation 311. Up to 128 conditions per place. [2024-01-29 14:20:38,267 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 24 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-01-29 14:20:38,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 127 flow [2024-01-29 14:20:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:20:38,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:20:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-01-29 14:20:38,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-01-29 14:20:38,270 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 66 flow. Second operand 4 states and 77 transitions. [2024-01-29 14:20:38,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 127 flow [2024-01-29 14:20:38,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:38,272 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2024-01-29 14:20:38,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-01-29 14:20:38,273 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2024-01-29 14:20:38,273 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2024-01-29 14:20:38,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 14:20:38,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:38,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:38,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:20:38,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-29 14:20:38,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash -655344249, now seen corresponding path program 1 times [2024-01-29 14:20:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:38,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490145947] [2024-01-29 14:20:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:38,326 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 14:20:38,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:38,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490145947] [2024-01-29 14:20:38,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490145947] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:38,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:38,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:20:38,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620798166] [2024-01-29 14:20:38,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:38,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:20:38,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:38,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:20:38,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:20:38,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-01-29 14:20:38,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 14:20:38,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:38,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-01-29 14:20:38,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:38,371 INFO L124 PetriNetUnfolderBase]: 42/105 cut-off events. [2024-01-29 14:20:38,371 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 14:20:38,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 105 events. 42/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 406 event pairs, 42 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 191. Up to 94 conditions per place. [2024-01-29 14:20:38,373 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 17 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2024-01-29 14:20:38,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 94 flow [2024-01-29 14:20:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:20:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:20:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-01-29 14:20:38,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2024-01-29 14:20:38,377 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 60 flow. Second operand 3 states and 61 transitions. [2024-01-29 14:20:38,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 94 flow [2024-01-29 14:20:38,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:38,378 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 57 flow [2024-01-29 14:20:38,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-01-29 14:20:38,380 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2024-01-29 14:20:38,380 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 57 flow [2024-01-29 14:20:38,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 14:20:38,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:38,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:38,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:20:38,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-29 14:20:38,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:38,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1158856717, now seen corresponding path program 1 times [2024-01-29 14:20:38,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:38,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929387901] [2024-01-29 14:20:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:38,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:38,474 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 14:20:38,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:38,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929387901] [2024-01-29 14:20:38,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929387901] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:38,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:38,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:20:38,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672452958] [2024-01-29 14:20:38,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:38,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:20:38,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:38,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:20:38,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:20:38,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-01-29 14:20:38,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 14:20:38,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:38,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-01-29 14:20:38,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:38,538 INFO L124 PetriNetUnfolderBase]: 42/105 cut-off events. [2024-01-29 14:20:38,539 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-29 14:20:38,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 105 events. 42/105 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 348 event pairs, 4 based on Foata normal form. 8/104 useless extension candidates. Maximal degree in co-relation 201. Up to 70 conditions per place. [2024-01-29 14:20:38,540 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 22 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-01-29 14:20:38,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 114 flow [2024-01-29 14:20:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:20:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:20:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-01-29 14:20:38,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-01-29 14:20:38,541 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 57 flow. Second operand 4 states and 75 transitions. [2024-01-29 14:20:38,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 114 flow [2024-01-29 14:20:38,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:20:38,542 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 54 flow [2024-01-29 14:20:38,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2024-01-29 14:20:38,543 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -12 predicate places. [2024-01-29 14:20:38,543 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 54 flow [2024-01-29 14:20:38,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 14:20:38,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:38,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:38,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 14:20:38,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-29 14:20:38,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:38,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1564820176, now seen corresponding path program 1 times [2024-01-29 14:20:38,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:38,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672686792] [2024-01-29 14:20:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:38,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:38,586 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 14:20:38,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:38,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672686792] [2024-01-29 14:20:38,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672686792] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:38,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:38,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:20:38,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113288707] [2024-01-29 14:20:38,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:38,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:20:38,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:38,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:20:38,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:20:38,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-01-29 14:20:38,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 14:20:38,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:38,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-01-29 14:20:38,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:38,623 INFO L124 PetriNetUnfolderBase]: 36/98 cut-off events. [2024-01-29 14:20:38,623 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-29 14:20:38,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 98 events. 36/98 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 296 event pairs, 10 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 197. Up to 54 conditions per place. [2024-01-29 14:20:38,624 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 22 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2024-01-29 14:20:38,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 133 flow [2024-01-29 14:20:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:20:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:20:38,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-01-29 14:20:38,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-01-29 14:20:38,625 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 54 flow. Second operand 3 states and 70 transitions. [2024-01-29 14:20:38,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 133 flow [2024-01-29 14:20:38,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:38,626 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 77 flow [2024-01-29 14:20:38,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2024-01-29 14:20:38,627 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2024-01-29 14:20:38,627 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 77 flow [2024-01-29 14:20:38,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 14:20:38,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:38,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:38,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 14:20:38,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-29 14:20:38,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash -17312424, now seen corresponding path program 1 times [2024-01-29 14:20:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:38,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935892386] [2024-01-29 14:20:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:38,660 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 14:20:38,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:38,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935892386] [2024-01-29 14:20:38,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935892386] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:38,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:38,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:20:38,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927642846] [2024-01-29 14:20:38,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:38,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:20:38,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:38,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:20:38,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:20:38,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-01-29 14:20:38,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:38,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:38,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-01-29 14:20:38,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:38,695 INFO L124 PetriNetUnfolderBase]: 30/86 cut-off events. [2024-01-29 14:20:38,695 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-01-29 14:20:38,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 86 events. 30/86 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 224 event pairs, 6 based on Foata normal form. 6/89 useless extension candidates. Maximal degree in co-relation 204. Up to 41 conditions per place. [2024-01-29 14:20:38,696 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 21 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2024-01-29 14:20:38,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 146 flow [2024-01-29 14:20:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:20:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:20:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-01-29 14:20:38,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460526315789473 [2024-01-29 14:20:38,697 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 77 flow. Second operand 4 states and 83 transitions. [2024-01-29 14:20:38,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 146 flow [2024-01-29 14:20:38,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:20:38,698 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 73 flow [2024-01-29 14:20:38,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2024-01-29 14:20:38,699 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2024-01-29 14:20:38,699 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 73 flow [2024-01-29 14:20:38,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:20:38,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:38,699 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] [2024-01-29 14:20:38,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 14:20:38,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-29 14:20:38,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1034455780, now seen corresponding path program 1 times [2024-01-29 14:20:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:38,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96626389] [2024-01-29 14:20:38,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:38,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:38,758 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 14:20:38,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:38,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96626389] [2024-01-29 14:20:38,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96626389] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:38,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:38,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 14:20:38,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832013359] [2024-01-29 14:20:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:38,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:20:38,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:38,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:20:38,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:20:38,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-29 14:20:38,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 14:20:38,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:38,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-29 14:20:38,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:38,831 INFO L124 PetriNetUnfolderBase]: 30/84 cut-off events. [2024-01-29 14:20:38,831 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-29 14:20:38,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 84 events. 30/84 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 229 event pairs, 12 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 200. Up to 44 conditions per place. [2024-01-29 14:20:38,832 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 14 selfloop transitions, 4 changer transitions 9/33 dead transitions. [2024-01-29 14:20:38,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 156 flow [2024-01-29 14:20:38,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:20:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:20:38,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-01-29 14:20:38,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-29 14:20:38,853 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 73 flow. Second operand 4 states and 88 transitions. [2024-01-29 14:20:38,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 156 flow [2024-01-29 14:20:38,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 143 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 14:20:38,854 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 72 flow [2024-01-29 14:20:38,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2024-01-29 14:20:38,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2024-01-29 14:20:38,855 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 72 flow [2024-01-29 14:20:38,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 14:20:38,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:20:38,855 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] [2024-01-29 14:20:38,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 14:20:38,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-29 14:20:38,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:20:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash -533586, now seen corresponding path program 2 times [2024-01-29 14:20:38,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:20:38,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027853253] [2024-01-29 14:20:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:20:38,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:20:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:20:38,925 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 14:20:38,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:20:38,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027853253] [2024-01-29 14:20:38,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027853253] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:20:38,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:20:38,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 14:20:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449172641] [2024-01-29 14:20:38,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:20:38,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:20:38,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:20:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:20:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:20:38,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-29 14:20:38,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 14:20:38,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:20:38,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-29 14:20:38,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:20:38,961 INFO L124 PetriNetUnfolderBase]: 18/53 cut-off events. [2024-01-29 14:20:38,962 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-01-29 14:20:38,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 53 events. 18/53 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 4 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 128. Up to 31 conditions per place. [2024-01-29 14:20:38,962 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-01-29 14:20:38,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 120 flow [2024-01-29 14:20:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:20:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:20:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-01-29 14:20:38,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328947368421053 [2024-01-29 14:20:38,963 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 72 flow. Second operand 4 states and 81 transitions. [2024-01-29 14:20:38,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 120 flow [2024-01-29 14:20:38,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 14:20:38,964 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2024-01-29 14:20:38,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2024-01-29 14:20:38,965 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -13 predicate places. [2024-01-29 14:20:38,965 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2024-01-29 14:20:38,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 14:20:38,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 28 remaining) [2024-01-29 14:20:38,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 28 remaining) [2024-01-29 14:20:38,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 28 remaining) [2024-01-29 14:20:38,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 28 remaining) [2024-01-29 14:20:38,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 28 remaining) [2024-01-29 14:20:38,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 28 remaining) [2024-01-29 14:20:38,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 28 remaining) [2024-01-29 14:20:38,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 28 remaining) [2024-01-29 14:20:38,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 28 remaining) [2024-01-29 14:20:38,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 28 remaining) [2024-01-29 14:20:38,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 28 remaining) [2024-01-29 14:20:38,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 28 remaining) [2024-01-29 14:20:38,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 28 remaining) [2024-01-29 14:20:38,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 28 remaining) [2024-01-29 14:20:38,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (13 of 28 remaining) [2024-01-29 14:20:38,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2024-01-29 14:20:38,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 28 remaining) [2024-01-29 14:20:38,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 28 remaining) [2024-01-29 14:20:38,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 28 remaining) [2024-01-29 14:20:38,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 28 remaining) [2024-01-29 14:20:38,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 28 remaining) [2024-01-29 14:20:38,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 28 remaining) [2024-01-29 14:20:38,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 28 remaining) [2024-01-29 14:20:38,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 28 remaining) [2024-01-29 14:20:38,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 28 remaining) [2024-01-29 14:20:38,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 28 remaining) [2024-01-29 14:20:38,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 28 remaining) [2024-01-29 14:20:38,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 28 remaining) [2024-01-29 14:20:38,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 14:20:38,972 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:20:38,976 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-29 14:20:38,976 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-29 14:20:38,979 INFO L503 ceAbstractionStarter]: Automizer considered 14 witness invariants [2024-01-29 14:20:38,979 INFO L504 ceAbstractionStarter]: WitnessConsidered=14 [2024-01-29 14:20:38,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 02:20:38 BasicIcfg [2024-01-29 14:20:38,980 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-29 14:20:38,981 INFO L158 Benchmark]: Toolchain (without parser) took 2384.71ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 104.0MB in the beginning and 153.1MB in the end (delta: -49.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:20:38,981 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 186.6MB. Free memory is still 150.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:20:38,981 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:20:38,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.13ms. Allocated memory is still 186.6MB. Free memory was 103.8MB in the beginning and 146.4MB in the end (delta: -42.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2024-01-29 14:20:38,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.37ms. Allocated memory is still 186.6MB. Free memory was 146.4MB in the beginning and 144.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 14:20:38,982 INFO L158 Benchmark]: Boogie Preprocessor took 26.60ms. Allocated memory is still 186.6MB. Free memory was 144.3MB in the beginning and 142.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 14:20:38,982 INFO L158 Benchmark]: RCFGBuilder took 489.00ms. Allocated memory is still 186.6MB. Free memory was 142.2MB in the beginning and 130.3MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-01-29 14:20:38,982 INFO L158 Benchmark]: TraceAbstraction took 1592.10ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 129.3MB in the beginning and 153.1MB in the end (delta: -23.8MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2024-01-29 14:20:38,983 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 186.6MB. Free memory is still 150.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.13ms. Allocated memory is still 186.6MB. Free memory was 103.8MB in the beginning and 146.4MB in the end (delta: -42.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.37ms. Allocated memory is still 186.6MB. Free memory was 146.4MB in the beginning and 144.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.60ms. Allocated memory is still 186.6MB. Free memory was 144.3MB in the beginning and 142.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 489.00ms. Allocated memory is still 186.6MB. Free memory was 142.2MB in the beginning and 130.3MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1592.10ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 129.3MB in the beginning and 153.1MB in the end (delta: -23.8MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 42]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 43]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 43]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 45]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 49]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 50]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 51]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 52]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 52]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 54]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 60]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 60]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 61]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 72]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 62 locations, 28 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 387 IncrementalHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 6 mSDtfsCounter, 387 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=0, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 247 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-29 14:20:39,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE