./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 a340643f 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-a340643-m [2024-01-27 14:53:01,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:53:01,732 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 14:53:01,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:53:01,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:53:01,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:53:01,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:53:01,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:53:01,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:53:01,762 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:53:01,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:53:01,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:53:01,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:53:01,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:53:01,763 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:53:01,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:53:01,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:53:01,764 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:53:01,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 14:53:01,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:53:01,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:53:01,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:53:01,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:53:01,766 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:53:01,766 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:53:01,766 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:53:01,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:53:01,767 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:53:01,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:53:01,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:53:01,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:53:01,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:53:01,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:53:01,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:53:01,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:53:01,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:53:01,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 14:53:01,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 14:53:01,769 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:53:01,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:53:01,770 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:53:01,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:53:01,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:53:01,771 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:53:01,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:53:01,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:53:01,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:53:01,980 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:53:01,980 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:53:01,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c [2024-01-27 14:53:02,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:53:03,063 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 14:53:03,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c [2024-01-27 14:53:03,069 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7679629c0/635dcbfe46c14934b8ec11ecb12f86c4/FLAGb17abf786 [2024-01-27 14:53:03,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7679629c0/635dcbfe46c14934b8ec11ecb12f86c4 [2024-01-27 14:53:03,080 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:53:03,080 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:53:03,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-semi1.wvr.yml/witness.yml [2024-01-27 14:53:03,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:53:03,141 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:53:03,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:53:03,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:53:03,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:53:03,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:53:03" (1/2) ... [2024-01-27 14:53:03,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4855b976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:53:03, skipping insertion in model container [2024-01-27 14:53:03,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:53:03" (1/2) ... [2024-01-27 14:53:03,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a2d3ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:53:03, skipping insertion in model container [2024-01-27 14:53:03,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:53:03" (2/2) ... [2024-01-27 14:53:03,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4855b976 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03, skipping insertion in model container [2024-01-27 14:53:03,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:53:03" (2/2) ... [2024-01-27 14:53:03,151 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 14:53:03,163 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 14:53:03,164 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-01-27 14:53:03,164 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-27 14:53:03,164 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] y == 0 [2024-01-27 14:53:03,164 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] x == 0 [2024-01-27 14:53:03,164 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] y == 0 [2024-01-27 14:53:03,165 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-27 14:53:03,165 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-27 14:53:03,165 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-27 14:53:03,165 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] (unsigned long )_argptr == 0UL [2024-01-27 14:53:03,166 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-01-27 14:53:03,166 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] -2147483647 <= x [2024-01-27 14:53:03,166 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] y == 0 [2024-01-27 14:53:03,166 INFO L98 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-01-27 14:53:03,166 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-27 14:53:03,166 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] x <= 2147483646 [2024-01-27 14:53:03,181 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 14:53:03,326 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] [2024-01-27 14:53:03,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:53:03,337 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 14:53:03,345 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 [2024-01-27 14:53:03,381 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] [2024-01-27 14:53:03,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:53:03,395 INFO L206 MainTranslator]: Completed translation [2024-01-27 14:53:03,395 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03 WrapperNode [2024-01-27 14:53:03,395 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 14:53:03,396 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 14:53:03,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 14:53:03,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 14:53:03,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,421 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 82 [2024-01-27 14:53:03,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 14:53:03,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 14:53:03,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 14:53:03,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 14:53:03,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,442 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]. [2024-01-27 14:53:03,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 14:53:03,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 14:53:03,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 14:53:03,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 14:53:03,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (1/1) ... [2024-01-27 14:53:03,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:53:03,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 14:53:03,475 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) [2024-01-27 14:53:03,481 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 [2024-01-27 14:53:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 14:53:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 14:53:03,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 14:53:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 14:53:03,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 14:53:03,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 14:53:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 14:53:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 14:53:03,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 14:53:03,509 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 14:53:03,588 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 14:53:03,590 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 14:53:03,746 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 14:53:03,747 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 14:53:03,899 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 14:53:03,900 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 14:53:03,900 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:53:03 BoogieIcfgContainer [2024-01-27 14:53:03,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 14:53:03,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 14:53:03,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 14:53:03,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 14:53:03,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 02:53:03" (1/4) ... [2024-01-27 14:53:03,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d66a862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:53:03, skipping insertion in model container [2024-01-27 14:53:03,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:53:03" (2/4) ... [2024-01-27 14:53:03,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d66a862 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:53:03, skipping insertion in model container [2024-01-27 14:53:03,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:53:03" (3/4) ... [2024-01-27 14:53:03,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d66a862 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:53:03, skipping insertion in model container [2024-01-27 14:53:03,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:53:03" (4/4) ... [2024-01-27 14:53:03,907 INFO L112 eAbstractionObserver]: Analyzing ICFG test-semi1.wvr.c [2024-01-27 14:53:03,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 14:53:03,922 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-01-27 14:53:03,922 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 14:53:03,968 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 14:53:04,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 38 transitions, 90 flow [2024-01-27 14:53:04,031 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2024-01-27 14:53:04,031 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 14:53:04,033 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. [2024-01-27 14:53:04,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 38 transitions, 90 flow [2024-01-27 14:53:04,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 35 transitions, 82 flow [2024-01-27 14:53:04,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:53:04,046 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;@40d127e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:53:04,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-01-27 14:53:04,050 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:53:04,051 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 14:53:04,051 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:53:04,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:53:04,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 14:53:04,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-27 14:53:04,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:53:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash 9552, now seen corresponding path program 1 times [2024-01-27 14:53:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:53:04,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842216818] [2024-01-27 14:53:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:53:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:53:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:53:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:53:04,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:53:04,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842216818] [2024-01-27 14:53:04,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842216818] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:53:04,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:53:04,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:53:04,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82279696] [2024-01-27 14:53:04,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:53:04,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:53:04,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:53:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:53:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:53:04,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-01-27 14:53:04,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-01-27 14:53:04,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:53:04,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-01-27 14:53:04,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:53:04,379 INFO L124 PetriNetUnfolderBase]: 72/170 cut-off events. [2024-01-27 14:53:04,380 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-01-27 14:53:04,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 170 events. 72/170 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 825 event pairs, 72 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 276. Up to 146 conditions per place. [2024-01-27 14:53:04,385 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 18 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-01-27 14:53:04,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 112 flow [2024-01-27 14:53:04,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:53:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:53:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-01-27 14:53:04,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2024-01-27 14:53:04,394 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 82 flow. Second operand 3 states and 61 transitions. [2024-01-27 14:53:04,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 112 flow [2024-01-27 14:53:04,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 104 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 14:53:04,398 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 68 flow [2024-01-27 14:53:04,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-01-27 14:53:04,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2024-01-27 14:53:04,401 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 68 flow [2024-01-27 14:53:04,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-01-27 14:53:04,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:53:04,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-27 14:53:04,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 14:53:04,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-27 14:53:04,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:53:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash 296409, now seen corresponding path program 1 times [2024-01-27 14:53:04,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:53:04,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959072231] [2024-01-27 14:53:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:53:04,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:53:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:53:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:53:04,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:53:04,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959072231] [2024-01-27 14:53:04,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959072231] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:53:04,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:53:04,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:53:04,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111456601] [2024-01-27 14:53:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:53:04,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:53:04,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:53:04,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:53:04,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:53:04,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-01-27 14:53:04,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-01-27 14:53:04,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:53:04,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-01-27 14:53:04,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:53:04,475 INFO L124 PetriNetUnfolderBase]: 72/169 cut-off events. [2024-01-27 14:53:04,475 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 14:53:04,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 169 events. 72/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 849 event pairs, 72 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 315. Up to 147 conditions per place. [2024-01-27 14:53:04,481 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 17 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-01-27 14:53:04,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 104 flow [2024-01-27 14:53:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:53:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:53:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-01-27 14:53:04,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-01-27 14:53:04,484 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 68 flow. Second operand 3 states and 62 transitions. [2024-01-27 14:53:04,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 104 flow [2024-01-27 14:53:04,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:53:04,487 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 66 flow [2024-01-27 14:53:04,487 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} [2024-01-27 14:53:04,488 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2024-01-27 14:53:04,488 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 66 flow [2024-01-27 14:53:04,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-01-27 14:53:04,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:53:04,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:53:04,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 14:53:04,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-27 14:53:04,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:53:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1129518804, now seen corresponding path program 1 times [2024-01-27 14:53:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:53:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208901527] [2024-01-27 14:53:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:53:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:53:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:53:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:53:04,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:53:04,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208901527] [2024-01-27 14:53:04,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208901527] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:53:04,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:53:04,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:53:04,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110158874] [2024-01-27 14:53:04,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:53:04,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:53:04,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:53:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:53:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:53:04,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-01-27 14:53:04,633 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) [2024-01-27 14:53:04,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:53:04,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-01-27 14:53:04,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:53:04,711 INFO L124 PetriNetUnfolderBase]: 72/165 cut-off events. [2024-01-27 14:53:04,711 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-27 14:53:04,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 165 events. 72/165 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 660 event pairs, 36 based on Foata normal form. 12/138 useless extension candidates. Maximal degree in co-relation 313. Up to 128 conditions per place. [2024-01-27 14:53:04,712 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 24 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-01-27 14:53:04,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 127 flow [2024-01-27 14:53:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:53:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:53:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-01-27 14:53:04,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-01-27 14:53:04,713 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 66 flow. Second operand 4 states and 77 transitions. [2024-01-27 14:53:04,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 127 flow [2024-01-27 14:53:04,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:53:04,714 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2024-01-27 14:53:04,714 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} [2024-01-27 14:53:04,716 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2024-01-27 14:53:04,716 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2024-01-27 14:53:04,716 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) [2024-01-27 14:53:04,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:53:04,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:53:04,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 14:53:04,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-27 14:53:04,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:53:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash -655344249, now seen corresponding path program 1 times [2024-01-27 14:53:04,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:53:04,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459775550] [2024-01-27 14:53:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:53:04,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:53:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:53:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:53:04,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:53:04,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459775550] [2024-01-27 14:53:04,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459775550] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:53:04,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:53:04,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:53:04,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039011285] [2024-01-27 14:53:04,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:53:04,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:53:04,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:53:04,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:53:04,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:53:04,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 14:53:04,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) 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) [2024-01-27 14:53:04,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:53:04,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 14:53:04,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:53:04,785 INFO L124 PetriNetUnfolderBase]: 42/105 cut-off events. [2024-01-27 14:53:04,785 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 14:53:04,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 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 410 event pairs, 42 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 191. Up to 93 conditions per place. [2024-01-27 14:53:04,786 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 16 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2024-01-27 14:53:04,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 92 flow [2024-01-27 14:53:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:53:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:53:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-01-27 14:53:04,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-01-27 14:53:04,788 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 60 flow. Second operand 3 states and 63 transitions. [2024-01-27 14:53:04,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 92 flow [2024-01-27 14:53:04,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 89 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:53:04,789 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 57 flow [2024-01-27 14:53:04,789 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} [2024-01-27 14:53:04,789 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2024-01-27 14:53:04,790 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 57 flow [2024-01-27 14:53:04,790 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) [2024-01-27 14:53:04,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:53:04,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:53:04,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 14:53:04,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-27 14:53:04,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:53:04,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1158856717, now seen corresponding path program 1 times [2024-01-27 14:53:04,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:53:04,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416319389] [2024-01-27 14:53:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:53:04,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:53:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:53:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:53:04,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:53:04,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416319389] [2024-01-27 14:53:04,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416319389] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:53:04,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:53:04,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:53:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949171919] [2024-01-27 14:53:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:53:04,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:53:04,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:53:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:53:04,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:53:04,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-01-27 14:53:04,914 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) [2024-01-27 14:53:04,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:53:04,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-01-27 14:53:04,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:53:04,964 INFO L124 PetriNetUnfolderBase]: 42/105 cut-off events. [2024-01-27 14:53:04,965 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 14:53:04,967 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. [2024-01-27 14:53:04,967 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 22 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-01-27 14:53:04,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 114 flow [2024-01-27 14:53:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:53:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:53:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-01-27 14:53:04,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-01-27 14:53:04,970 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 57 flow. Second operand 4 states and 75 transitions. [2024-01-27 14:53:04,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 114 flow [2024-01-27 14:53:04,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 14:53:04,972 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 54 flow [2024-01-27 14:53:04,972 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} [2024-01-27 14:53:04,975 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -12 predicate places. [2024-01-27 14:53:04,975 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 54 flow [2024-01-27 14:53:04,975 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) [2024-01-27 14:53:04,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:53:04,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:53:04,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 14:53:04,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-27 14:53:04,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:53:04,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1564820176, now seen corresponding path program 1 times [2024-01-27 14:53:04,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:53:04,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886070651] [2024-01-27 14:53:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:53:04,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:53:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:53:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:53:05,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:53:05,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886070651] [2024-01-27 14:53:05,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886070651] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:53:05,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:53:05,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:53:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840173764] [2024-01-27 14:53:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:53:05,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:53:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:53:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:53:05,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:53:05,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 14:53:05,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-01-27 14:53:05,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:53:05,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 14:53:05,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:53:05,083 INFO L124 PetriNetUnfolderBase]: 36/98 cut-off events. [2024-01-27 14:53:05,083 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-27 14:53:05,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 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 299 event pairs, 10 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 196. Up to 54 conditions per place. [2024-01-27 14:53:05,084 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 21 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2024-01-27 14:53:05,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 131 flow [2024-01-27 14:53:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:53:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:53:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-01-27 14:53:05,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-01-27 14:53:05,087 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 54 flow. Second operand 3 states and 72 transitions. [2024-01-27 14:53:05,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 131 flow [2024-01-27 14:53:05,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:53:05,088 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 77 flow [2024-01-27 14:53:05,088 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} [2024-01-27 14:53:05,090 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2024-01-27 14:53:05,091 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 77 flow [2024-01-27 14:53:05,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-01-27 14:53:05,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:53:05,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:53:05,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 14:53:05,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-27 14:53:05,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:53:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash -17312424, now seen corresponding path program 1 times [2024-01-27 14:53:05,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:53:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061474573] [2024-01-27 14:53:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:53:05,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:53:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:53:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:53:05,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:53:05,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061474573] [2024-01-27 14:53:05,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061474573] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:53:05,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:53:05,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:53:05,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761792720] [2024-01-27 14:53:05,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:53:05,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:53:05,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:53:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:53:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:53:05,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 14:53:05,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-01-27 14:53:05,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:53:05,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 14:53:05,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:53:05,206 INFO L124 PetriNetUnfolderBase]: 30/86 cut-off events. [2024-01-27 14:53:05,207 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-01-27 14:53:05,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 86 events. 30/86 cut-off events. For 45/45 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 203. Up to 41 conditions per place. [2024-01-27 14:53:05,208 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 20 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2024-01-27 14:53:05,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 144 flow [2024-01-27 14:53:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:53:05,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:53:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-01-27 14:53:05,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2024-01-27 14:53:05,209 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 77 flow. Second operand 4 states and 86 transitions. [2024-01-27 14:53:05,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 144 flow [2024-01-27 14:53:05,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:53:05,210 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 73 flow [2024-01-27 14:53:05,210 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} [2024-01-27 14:53:05,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2024-01-27 14:53:05,211 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 73 flow [2024-01-27 14:53:05,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-01-27 14:53:05,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:53:05,212 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] [2024-01-27 14:53:05,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 14:53:05,212 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-27 14:53:05,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:53:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1034455780, now seen corresponding path program 1 times [2024-01-27 14:53:05,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:53:05,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962844602] [2024-01-27 14:53:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:53:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:53:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:53:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:53:05,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:53:05,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962844602] [2024-01-27 14:53:05,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962844602] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:53:05,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:53:05,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 14:53:05,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838861593] [2024-01-27 14:53:05,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:53:05,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:53:05,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:53:05,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:53:05,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:53:05,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 14:53:05,328 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) [2024-01-27 14:53:05,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:53:05,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 14:53:05,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:53:05,365 INFO L124 PetriNetUnfolderBase]: 30/84 cut-off events. [2024-01-27 14:53:05,366 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 14:53:05,366 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. [2024-01-27 14:53:05,367 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 14 selfloop transitions, 4 changer transitions 9/33 dead transitions. [2024-01-27 14:53:05,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 156 flow [2024-01-27 14:53:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:53:05,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:53:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-01-27 14:53:05,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-01-27 14:53:05,369 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 73 flow. Second operand 4 states and 88 transitions. [2024-01-27 14:53:05,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 156 flow [2024-01-27 14:53:05,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 143 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 14:53:05,371 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 72 flow [2024-01-27 14:53:05,371 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} [2024-01-27 14:53:05,372 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2024-01-27 14:53:05,372 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 72 flow [2024-01-27 14:53:05,373 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) [2024-01-27 14:53:05,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:53:05,373 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] [2024-01-27 14:53:05,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 14:53:05,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-01-27 14:53:05,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:53:05,374 INFO L85 PathProgramCache]: Analyzing trace with hash -533586, now seen corresponding path program 2 times [2024-01-27 14:53:05,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:53:05,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609637297] [2024-01-27 14:53:05,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:53:05,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:53:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:53:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:53:05,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:53:05,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609637297] [2024-01-27 14:53:05,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609637297] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:53:05,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:53:05,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 14:53:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429221680] [2024-01-27 14:53:05,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:53:05,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:53:05,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:53:05,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:53:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:53:05,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-01-27 14:53:05,459 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) [2024-01-27 14:53:05,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:53:05,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-01-27 14:53:05,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:53:05,486 INFO L124 PetriNetUnfolderBase]: 18/53 cut-off events. [2024-01-27 14:53:05,487 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-01-27 14:53:05,487 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. [2024-01-27 14:53:05,487 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-01-27 14:53:05,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 120 flow [2024-01-27 14:53:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:53:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:53:05,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-01-27 14:53:05,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328947368421053 [2024-01-27 14:53:05,488 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 72 flow. Second operand 4 states and 81 transitions. [2024-01-27 14:53:05,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 120 flow [2024-01-27 14:53:05,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 14:53:05,500 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2024-01-27 14:53:05,500 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} [2024-01-27 14:53:05,501 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -13 predicate places. [2024-01-27 14:53:05,501 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2024-01-27 14:53:05,501 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) [2024-01-27 14:53:05,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 28 remaining) [2024-01-27 14:53:05,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 28 remaining) [2024-01-27 14:53:05,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 28 remaining) [2024-01-27 14:53:05,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 28 remaining) [2024-01-27 14:53:05,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 28 remaining) [2024-01-27 14:53:05,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 28 remaining) [2024-01-27 14:53:05,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 28 remaining) [2024-01-27 14:53:05,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 28 remaining) [2024-01-27 14:53:05,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 28 remaining) [2024-01-27 14:53:05,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 28 remaining) [2024-01-27 14:53:05,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 28 remaining) [2024-01-27 14:53:05,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 28 remaining) [2024-01-27 14:53:05,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 28 remaining) [2024-01-27 14:53:05,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 28 remaining) [2024-01-27 14:53:05,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (13 of 28 remaining) [2024-01-27 14:53:05,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2024-01-27 14:53:05,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 28 remaining) [2024-01-27 14:53:05,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 28 remaining) [2024-01-27 14:53:05,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 28 remaining) [2024-01-27 14:53:05,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 28 remaining) [2024-01-27 14:53:05,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 28 remaining) [2024-01-27 14:53:05,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 28 remaining) [2024-01-27 14:53:05,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 28 remaining) [2024-01-27 14:53:05,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 28 remaining) [2024-01-27 14:53:05,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 28 remaining) [2024-01-27 14:53:05,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 28 remaining) [2024-01-27 14:53:05,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 28 remaining) [2024-01-27 14:53:05,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 28 remaining) [2024-01-27 14:53:05,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 14:53:05,514 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:53:05,518 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 14:53:05,519 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 14:53:05,521 INFO L503 ceAbstractionStarter]: Automizer considered 14 witness invariants [2024-01-27 14:53:05,522 INFO L504 ceAbstractionStarter]: WitnessConsidered=14 [2024-01-27 14:53:05,523 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 02:53:05 BasicIcfg [2024-01-27 14:53:05,523 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 14:53:05,524 INFO L158 Benchmark]: Toolchain (without parser) took 2382.70ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 163.0MB in the beginning and 198.2MB in the end (delta: -35.1MB). Peak memory consumption was 100.1MB. Max. memory is 16.1GB. [2024-01-27 14:53:05,524 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:53:05,524 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 165.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:53:05,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.70ms. Allocated memory is still 195.0MB. Free memory was 163.0MB in the beginning and 148.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-01-27 14:53:05,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.38ms. Allocated memory is still 195.0MB. Free memory was 148.8MB in the beginning and 146.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:53:05,525 INFO L158 Benchmark]: Boogie Preprocessor took 29.40ms. Allocated memory is still 195.0MB. Free memory was 146.8MB in the beginning and 144.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:53:05,526 INFO L158 Benchmark]: RCFGBuilder took 448.60ms. Allocated memory is still 195.0MB. Free memory was 144.6MB in the beginning and 117.4MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-01-27 14:53:05,526 INFO L158 Benchmark]: TraceAbstraction took 1621.35ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 116.1MB in the beginning and 198.2MB in the end (delta: -82.1MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. [2024-01-27 14:53:05,528 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 165.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.70ms. Allocated memory is still 195.0MB. Free memory was 163.0MB in the beginning and 148.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.38ms. Allocated memory is still 195.0MB. Free memory was 148.8MB in the beginning and 146.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.40ms. Allocated memory is still 195.0MB. Free memory was 146.8MB in the beginning and 144.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 448.60ms. Allocated memory is still 195.0MB. Free memory was 144.6MB in the beginning and 117.4MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1621.35ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 116.1MB in the beginning and 198.2MB in the end (delta: -82.1MB). Peak memory consumption was 51.9MB. 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: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 157 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 383 IncrementalHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 3 mSDtfsCounter, 383 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, 0.1s 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, 0.6s 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! [2024-01-27 14:53:05,559 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