./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp2x6.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp2x6.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-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:07:27,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:07:27,649 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:07:27,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:07:27,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:07:27,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:07:27,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:07:27,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:07:27,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:07:27,667 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:07:27,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:07:27,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:07:27,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:07:27,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:07:27,669 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:07:27,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:07:27,670 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:07:27,670 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:07:27,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:07:27,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:07:27,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:07:27,671 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:07:27,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:07:27,672 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:07:27,672 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:07:27,672 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:07:27,672 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:07:27,673 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:07:27,673 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:07:27,673 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:07:27,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:07:27,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:07:27,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:07:27,674 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:07:27,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:07:27,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:07:27,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:07:27,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:07:27,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:07:27,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:07:27,675 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:07:27,675 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:07:27,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:07:27,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:07:27,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:07:27,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:07:27,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:07:27,887 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:07:27,887 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:07:27,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2024-01-31 16:07:29,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:07:29,201 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:07:29,203 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2024-01-31 16:07:29,208 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4516ada/cc22c398a70d4ad4834a299257d7a5ed/FLAG60785933b [2024-01-31 16:07:29,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d4516ada/cc22c398a70d4ad4834a299257d7a5ed [2024-01-31 16:07:29,222 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:07:29,223 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:07:29,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp2x6.wvr.yml/witness.yml [2024-01-31 16:07:29,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:07:29,293 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:07:29,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:07:29,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:07:29,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:07:29,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:07:29" (1/2) ... [2024-01-31 16:07:29,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186407c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:29, skipping insertion in model container [2024-01-31 16:07:29,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:07:29" (1/2) ... [2024-01-31 16:07:29,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44110e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:29, skipping insertion in model container [2024-01-31 16:07:29,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:07:29" (2/2) ... [2024-01-31 16:07:29,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186407c6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29, skipping insertion in model container [2024-01-31 16:07:29,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:07:29" (2/2) ... [2024-01-31 16:07:29,303 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:07:29,336 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:07:29,337 INFO L98 nessWitnessExtractor]: Loop invariant at [L71-L71] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,338 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,338 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,338 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,338 INFO L98 nessWitnessExtractor]: Location invariant before [L39-L39] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,339 INFO L98 nessWitnessExtractor]: Location invariant before [L40-L40] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,339 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] n == 0U [2024-01-31 16:07:29,339 INFO L98 nessWitnessExtractor]: Loop invariant at [L38-L38] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,339 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,339 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,339 INFO L98 nessWitnessExtractor]: Location invariant before [L85-L85] (((((((((0LL - (long long )x1) + (long long )x3 >= 0LL) && ((long long )x1 + (long long )x3 >= 0LL)) && ((0LL - (long long )x1) - (long long )x3 >= 0LL)) && ((long long )x1 - (long long )x3 >= 0LL)) && (x1 == 0U)) && (x2 == 0U)) && (x3 == 0U)) && (x4 == 0U)) && (n == 0U) [2024-01-31 16:07:29,339 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,340 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,340 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,340 INFO L98 nessWitnessExtractor]: Location invariant before [L88-L88] (x4 == 0U) && (n == 0U) [2024-01-31 16:07:29,340 INFO L98 nessWitnessExtractor]: Location invariant before [L87-L87] ((x3 == 0U) && (x4 == 0U)) && (n == 0U) [2024-01-31 16:07:29,340 INFO L98 nessWitnessExtractor]: Loop invariant at [L49-L49] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,340 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,340 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L86] (((x2 == 0U) && (x3 == 0U)) && (x4 == 0U)) && (n == 0U) [2024-01-31 16:07:29,341 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,341 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L67] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,341 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,341 INFO L98 nessWitnessExtractor]: Location invariant before [L78-L78] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,341 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,342 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,342 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,342 INFO L98 nessWitnessExtractor]: Loop invariant at [L60-L60] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,342 INFO L98 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,342 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (unsigned long )_argptr == 0UL [2024-01-31 16:07:29,361 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:07:29,494 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c[2505,2518] [2024-01-31 16:07:29,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:07:29,504 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local 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 [2024-01-31 16:07:29,574 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c[2505,2518] [2024-01-31 16:07:29,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:07:29,586 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:07:29,586 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29 WrapperNode [2024-01-31 16:07:29,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:07:29,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:07:29,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:07:29,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:07:29,592 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 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,599 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 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,616 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2024-01-31 16:07:29,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:07:29,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:07:29,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:07:29,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:07:29,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,637 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,648 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 16:07:29,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,654 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,656 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:07:29,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:07:29,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:07:29,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:07:29,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (1/1) ... [2024-01-31 16:07:29,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:07:29,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:07:29,682 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) [2024-01-31 16:07:29,730 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 [2024-01-31 16:07:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:07:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:07:29,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:07:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:07:29,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:07:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:07:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:07:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:07:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:07:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:07:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:07:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:07:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:07:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:07:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:07:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:07:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:07:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:07:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:07:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:07:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:07:29,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:07:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:07:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:07:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:07:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:07:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:07:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:07:29,769 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:07:29,880 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:07:29,882 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:07:30,171 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:07:30,172 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:07:30,268 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:07:30,269 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 16:07:30,269 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:07:30 BoogieIcfgContainer [2024-01-31 16:07:30,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:07:30,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:07:30,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:07:30,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:07:30,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:07:29" (1/4) ... [2024-01-31 16:07:30,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba19dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:07:30, skipping insertion in model container [2024-01-31 16:07:30,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:07:29" (2/4) ... [2024-01-31 16:07:30,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba19dab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:07:30, skipping insertion in model container [2024-01-31 16:07:30,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:29" (3/4) ... [2024-01-31 16:07:30,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba19dab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:07:30, skipping insertion in model container [2024-01-31 16:07:30,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:07:30" (4/4) ... [2024-01-31 16:07:30,275 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2024-01-31 16:07:30,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:07:30,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-01-31 16:07:30,289 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:07:30,351 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 16:07:30,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 97 transitions, 222 flow [2024-01-31 16:07:30,402 INFO L124 PetriNetUnfolderBase]: 8/93 cut-off events. [2024-01-31 16:07:30,402 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:07:30,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 93 events. 8/93 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 273 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2024-01-31 16:07:30,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 97 transitions, 222 flow [2024-01-31 16:07:30,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 92 transitions, 208 flow [2024-01-31 16:07:30,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:07:30,423 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;@13cef7ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:07:30,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-01-31 16:07:30,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:07:30,426 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:07:30,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:07:30,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:30,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:07:30,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:30,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 13404, now seen corresponding path program 1 times [2024-01-31 16:07:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953207420] [2024-01-31 16:07:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:30,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:30,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953207420] [2024-01-31 16:07:30,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953207420] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:30,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:30,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:07:30,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644594334] [2024-01-31 16:07:30,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:30,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:30,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:30,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-01-31 16:07:30,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:30,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:30,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-01-31 16:07:30,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:34,089 INFO L124 PetriNetUnfolderBase]: 24389/41309 cut-off events. [2024-01-31 16:07:34,089 INFO L125 PetriNetUnfolderBase]: For 1361/1361 co-relation queries the response was YES. [2024-01-31 16:07:34,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73241 conditions, 41309 events. 24389/41309 cut-off events. For 1361/1361 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 371954 event pairs, 17678 based on Foata normal form. 6617/45224 useless extension candidates. Maximal degree in co-relation 65585. Up to 30726 conditions per place. [2024-01-31 16:07:34,400 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 48 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-01-31 16:07:34,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 87 transitions, 298 flow [2024-01-31 16:07:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-01-31 16:07:34,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6116838487972509 [2024-01-31 16:07:34,537 INFO L175 Difference]: Start difference. First operand has 97 places, 92 transitions, 208 flow. Second operand 3 states and 178 transitions. [2024-01-31 16:07:34,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 87 transitions, 298 flow [2024-01-31 16:07:34,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 87 transitions, 282 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:07:34,585 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 186 flow [2024-01-31 16:07:34,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2024-01-31 16:07:34,590 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -7 predicate places. [2024-01-31 16:07:34,590 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 186 flow [2024-01-31 16:07:34,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:34,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:34,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-31 16:07:34,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:07:34,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:34,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash 415900, now seen corresponding path program 1 times [2024-01-31 16:07:34,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:34,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582972546] [2024-01-31 16:07:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:34,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:34,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:34,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582972546] [2024-01-31 16:07:34,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582972546] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:34,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:34,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:07:34,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362406179] [2024-01-31 16:07:34,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:34,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:34,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:34,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:34,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-01-31 16:07:34,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2024-01-31 16:07:34,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:34,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-01-31 16:07:34,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:37,219 INFO L124 PetriNetUnfolderBase]: 24389/41308 cut-off events. [2024-01-31 16:07:37,220 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-01-31 16:07:37,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72438 conditions, 41308 events. 24389/41308 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 371943 event pairs, 17678 based on Foata normal form. 0/38607 useless extension candidates. Maximal degree in co-relation 72429. Up to 30724 conditions per place. [2024-01-31 16:07:37,524 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 47 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-01-31 16:07:37,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 282 flow [2024-01-31 16:07:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-01-31 16:07:37,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048109965635738 [2024-01-31 16:07:37,526 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 186 flow. Second operand 3 states and 176 transitions. [2024-01-31 16:07:37,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 282 flow [2024-01-31 16:07:37,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:37,528 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 184 flow [2024-01-31 16:07:37,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2024-01-31 16:07:37,529 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -8 predicate places. [2024-01-31 16:07:37,529 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 184 flow [2024-01-31 16:07:37,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2024-01-31 16:07:37,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:37,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 16:07:37,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:07:37,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:37,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash 12893355, now seen corresponding path program 1 times [2024-01-31 16:07:37,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:37,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317528934] [2024-01-31 16:07:37,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:37,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:37,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317528934] [2024-01-31 16:07:37,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317528934] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:37,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:37,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:07:37,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940508346] [2024-01-31 16:07:37,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:37,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:37,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:37,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:37,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-01-31 16:07:37,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:37,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:37,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-01-31 16:07:37,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:39,799 INFO L124 PetriNetUnfolderBase]: 24389/41307 cut-off events. [2024-01-31 16:07:39,799 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-01-31 16:07:39,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72436 conditions, 41307 events. 24389/41307 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 371981 event pairs, 17678 based on Foata normal form. 0/38607 useless extension candidates. Maximal degree in co-relation 72425. Up to 30722 conditions per place. [2024-01-31 16:07:40,042 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 46 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-01-31 16:07:40,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 278 flow [2024-01-31 16:07:40,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:40,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-01-31 16:07:40,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6116838487972509 [2024-01-31 16:07:40,045 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 184 flow. Second operand 3 states and 178 transitions. [2024-01-31 16:07:40,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 85 transitions, 278 flow [2024-01-31 16:07:40,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 85 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:40,046 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 182 flow [2024-01-31 16:07:40,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2024-01-31 16:07:40,048 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -9 predicate places. [2024-01-31 16:07:40,048 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 182 flow [2024-01-31 16:07:40,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:40,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:40,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:07:40,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:07:40,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:40,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:40,049 INFO L85 PathProgramCache]: Analyzing trace with hash 399694422, now seen corresponding path program 1 times [2024-01-31 16:07:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:40,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357474043] [2024-01-31 16:07:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:40,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:40,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:40,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357474043] [2024-01-31 16:07:40,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357474043] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:40,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:40,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:07:40,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430193532] [2024-01-31 16:07:40,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:40,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:40,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:40,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:40,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:40,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 97 [2024-01-31 16:07:40,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2024-01-31 16:07:40,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:40,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 97 [2024-01-31 16:07:40,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:42,435 INFO L124 PetriNetUnfolderBase]: 24389/41306 cut-off events. [2024-01-31 16:07:42,436 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-01-31 16:07:42,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72434 conditions, 41306 events. 24389/41306 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 372015 event pairs, 17678 based on Foata normal form. 0/38607 useless extension candidates. Maximal degree in co-relation 72421. Up to 30720 conditions per place. [2024-01-31 16:07:42,684 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-01-31 16:07:42,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 274 flow [2024-01-31 16:07:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2024-01-31 16:07:42,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6185567010309279 [2024-01-31 16:07:42,716 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 182 flow. Second operand 3 states and 180 transitions. [2024-01-31 16:07:42,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 274 flow [2024-01-31 16:07:42,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:42,718 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 180 flow [2024-01-31 16:07:42,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-01-31 16:07:42,720 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -10 predicate places. [2024-01-31 16:07:42,723 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 180 flow [2024-01-31 16:07:42,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2024-01-31 16:07:42,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:42,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:07:42,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:07:42,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:42,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash -494374428, now seen corresponding path program 1 times [2024-01-31 16:07:42,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:42,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488219282] [2024-01-31 16:07:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:42,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:42,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488219282] [2024-01-31 16:07:42,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488219282] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:42,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:42,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:07:42,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261812742] [2024-01-31 16:07:42,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:42,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:42,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:42,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:42,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-01-31 16:07:42,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-01-31 16:07:42,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:42,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-01-31 16:07:42,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:44,932 INFO L124 PetriNetUnfolderBase]: 24389/41305 cut-off events. [2024-01-31 16:07:44,933 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-01-31 16:07:45,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72432 conditions, 41305 events. 24389/41305 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 2264. Compared 372122 event pairs, 17678 based on Foata normal form. 0/38607 useless extension candidates. Maximal degree in co-relation 72417. Up to 30718 conditions per place. [2024-01-31 16:07:45,182 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 44 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-01-31 16:07:45,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 270 flow [2024-01-31 16:07:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2024-01-31 16:07:45,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6254295532646048 [2024-01-31 16:07:45,184 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 180 flow. Second operand 3 states and 182 transitions. [2024-01-31 16:07:45,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 270 flow [2024-01-31 16:07:45,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:45,193 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 178 flow [2024-01-31 16:07:45,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2024-01-31 16:07:45,195 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -11 predicate places. [2024-01-31 16:07:45,195 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 178 flow [2024-01-31 16:07:45,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-01-31 16:07:45,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:45,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:45,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:07:45,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:45,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:45,196 INFO L85 PathProgramCache]: Analyzing trace with hash -465197451, now seen corresponding path program 1 times [2024-01-31 16:07:45,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:45,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823966825] [2024-01-31 16:07:45,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:45,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:45,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:45,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823966825] [2024-01-31 16:07:45,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823966825] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:45,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:45,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:45,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775335755] [2024-01-31 16:07:45,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:45,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:45,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:45,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:45,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:45,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-01-31 16:07:45,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2024-01-31 16:07:45,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:45,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-01-31 16:07:45,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:46,255 INFO L124 PetriNetUnfolderBase]: 13611/20381 cut-off events. [2024-01-31 16:07:46,256 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:07:46,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37875 conditions, 20381 events. 13611/20381 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 148348 event pairs, 1013 based on Foata normal form. 518/19634 useless extension candidates. Maximal degree in co-relation 37858. Up to 15287 conditions per place. [2024-01-31 16:07:46,380 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 63 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-01-31 16:07:46,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 99 transitions, 343 flow [2024-01-31 16:07:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:07:46,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:07:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2024-01-31 16:07:46,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262886597938144 [2024-01-31 16:07:46,382 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 178 flow. Second operand 4 states and 243 transitions. [2024-01-31 16:07:46,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 99 transitions, 343 flow [2024-01-31 16:07:46,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 99 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:46,387 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 166 flow [2024-01-31 16:07:46,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-01-31 16:07:46,390 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -16 predicate places. [2024-01-31 16:07:46,391 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 166 flow [2024-01-31 16:07:46,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2024-01-31 16:07:46,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:46,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:46,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:07:46,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:46,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash -380453108, now seen corresponding path program 1 times [2024-01-31 16:07:46,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:46,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418732820] [2024-01-31 16:07:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418732820] [2024-01-31 16:07:46,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418732820] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:46,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:46,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:46,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675023470] [2024-01-31 16:07:46,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:46,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:46,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:46,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:46,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:46,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-01-31 16:07:46,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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) [2024-01-31 16:07:46,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:46,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-01-31 16:07:46,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:47,834 INFO L124 PetriNetUnfolderBase]: 13542/24630 cut-off events. [2024-01-31 16:07:47,834 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-01-31 16:07:47,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42055 conditions, 24630 events. 13542/24630 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 1420. Compared 224430 event pairs, 5166 based on Foata normal form. 588/22982 useless extension candidates. Maximal degree in co-relation 42034. Up to 14954 conditions per place. [2024-01-31 16:07:48,018 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 68 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2024-01-31 16:07:48,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 351 flow [2024-01-31 16:07:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:07:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:07:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-01-31 16:07:48,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6391752577319587 [2024-01-31 16:07:48,020 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 166 flow. Second operand 4 states and 248 transitions. [2024-01-31 16:07:48,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 351 flow [2024-01-31 16:07:48,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:48,022 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 155 flow [2024-01-31 16:07:48,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-01-31 16:07:48,023 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -21 predicate places. [2024-01-31 16:07:48,023 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 155 flow [2024-01-31 16:07:48,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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) [2024-01-31 16:07:48,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:48,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:48,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:07:48,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:48,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:48,024 INFO L85 PathProgramCache]: Analyzing trace with hash -544406681, now seen corresponding path program 1 times [2024-01-31 16:07:48,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:48,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884005970] [2024-01-31 16:07:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:48,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:48,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884005970] [2024-01-31 16:07:48,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884005970] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:48,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:48,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:48,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952461634] [2024-01-31 16:07:48,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:48,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:48,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:48,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:48,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:48,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-01-31 16:07:48,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2024-01-31 16:07:48,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:48,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-01-31 16:07:48,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:49,093 INFO L124 PetriNetUnfolderBase]: 13398/22045 cut-off events. [2024-01-31 16:07:49,093 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2024-01-31 16:07:49,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39307 conditions, 22045 events. 13398/22045 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 174205 event pairs, 2032 based on Foata normal form. 588/21219 useless extension candidates. Maximal degree in co-relation 39287. Up to 14690 conditions per place. [2024-01-31 16:07:49,218 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 73 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-01-31 16:07:49,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 360 flow [2024-01-31 16:07:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:07:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:07:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-01-31 16:07:49,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6520618556701031 [2024-01-31 16:07:49,220 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 155 flow. Second operand 4 states and 253 transitions. [2024-01-31 16:07:49,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 360 flow [2024-01-31 16:07:49,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 97 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:49,222 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 144 flow [2024-01-31 16:07:49,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-01-31 16:07:49,222 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -26 predicate places. [2024-01-31 16:07:49,222 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 144 flow [2024-01-31 16:07:49,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2024-01-31 16:07:49,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:49,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:49,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:07:49,223 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:49,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 808588421, now seen corresponding path program 1 times [2024-01-31 16:07:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:49,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48869940] [2024-01-31 16:07:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:49,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48869940] [2024-01-31 16:07:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48869940] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:49,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512433464] [2024-01-31 16:07:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:49,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:49,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:49,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-01-31 16:07:49,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:49,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:49,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-01-31 16:07:49,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:50,240 INFO L124 PetriNetUnfolderBase]: 13624/19561 cut-off events. [2024-01-31 16:07:50,240 INFO L125 PetriNetUnfolderBase]: For 267/267 co-relation queries the response was YES. [2024-01-31 16:07:50,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37115 conditions, 19561 events. 13624/19561 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 129861 event pairs, 1211 based on Foata normal form. 518/19163 useless extension candidates. Maximal degree in co-relation 37095. Up to 13090 conditions per place. [2024-01-31 16:07:50,345 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 78 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-01-31 16:07:50,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 369 flow [2024-01-31 16:07:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:07:50,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:07:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-01-31 16:07:50,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6649484536082474 [2024-01-31 16:07:50,353 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 144 flow. Second operand 4 states and 258 transitions. [2024-01-31 16:07:50,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 369 flow [2024-01-31 16:07:50,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 96 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:50,357 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 133 flow [2024-01-31 16:07:50,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-01-31 16:07:50,357 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -31 predicate places. [2024-01-31 16:07:50,358 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 133 flow [2024-01-31 16:07:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:50,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:50,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:50,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:07:50,359 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:50,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -567603789, now seen corresponding path program 1 times [2024-01-31 16:07:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:50,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496115310] [2024-01-31 16:07:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:50,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496115310] [2024-01-31 16:07:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496115310] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:50,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:50,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198235942] [2024-01-31 16:07:50,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:50,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:50,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 97 [2024-01-31 16:07:50,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-01-31 16:07:50,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:50,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 97 [2024-01-31 16:07:50,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:51,541 INFO L124 PetriNetUnfolderBase]: 14398/21880 cut-off events. [2024-01-31 16:07:51,541 INFO L125 PetriNetUnfolderBase]: For 459/459 co-relation queries the response was YES. [2024-01-31 16:07:51,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40502 conditions, 21880 events. 14398/21880 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 1240. Compared 157134 event pairs, 4677 based on Foata normal form. 1/20104 useless extension candidates. Maximal degree in co-relation 40482. Up to 17904 conditions per place. [2024-01-31 16:07:51,673 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 56 selfloop transitions, 7 changer transitions 1/81 dead transitions. [2024-01-31 16:07:51,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 314 flow [2024-01-31 16:07:51,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-01-31 16:07:51,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.738831615120275 [2024-01-31 16:07:51,675 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 133 flow. Second operand 3 states and 215 transitions. [2024-01-31 16:07:51,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 314 flow [2024-01-31 16:07:51,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:51,679 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 169 flow [2024-01-31 16:07:51,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-01-31 16:07:51,680 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -30 predicate places. [2024-01-31 16:07:51,682 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 169 flow [2024-01-31 16:07:51,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-01-31 16:07:51,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:51,682 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:51,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:07:51,683 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:51,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:51,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2063566010, now seen corresponding path program 1 times [2024-01-31 16:07:51,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:51,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047906728] [2024-01-31 16:07:51,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:51,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:51,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:51,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047906728] [2024-01-31 16:07:51,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047906728] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:51,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:51,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:07:51,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119187395] [2024-01-31 16:07:51,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:51,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:51,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:51,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:51,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:51,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 97 [2024-01-31 16:07:51,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2024-01-31 16:07:51,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:51,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 97 [2024-01-31 16:07:51,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:54,015 INFO L124 PetriNetUnfolderBase]: 29907/43092 cut-off events. [2024-01-31 16:07:54,015 INFO L125 PetriNetUnfolderBase]: For 6954/7504 co-relation queries the response was YES. [2024-01-31 16:07:54,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89146 conditions, 43092 events. 29907/43092 cut-off events. For 6954/7504 co-relation queries the response was YES. Maximal size of possible extension queue 2260. Compared 308220 event pairs, 9679 based on Foata normal form. 22/37625 useless extension candidates. Maximal degree in co-relation 89121. Up to 20001 conditions per place. [2024-01-31 16:07:54,312 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 118 selfloop transitions, 15 changer transitions 0/146 dead transitions. [2024-01-31 16:07:54,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 146 transitions, 650 flow [2024-01-31 16:07:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:07:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:07:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 356 transitions. [2024-01-31 16:07:54,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.734020618556701 [2024-01-31 16:07:54,314 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 169 flow. Second operand 5 states and 356 transitions. [2024-01-31 16:07:54,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 146 transitions, 650 flow [2024-01-31 16:07:54,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 146 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:07:54,317 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 260 flow [2024-01-31 16:07:54,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-01-31 16:07:54,317 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -24 predicate places. [2024-01-31 16:07:54,317 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 260 flow [2024-01-31 16:07:54,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2024-01-31 16:07:54,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:54,318 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:54,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:07:54,318 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-01-31 16:07:54,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:54,319 INFO L85 PathProgramCache]: Analyzing trace with hash -437746028, now seen corresponding path program 2 times [2024-01-31 16:07:54,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:54,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465841741] [2024-01-31 16:07:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:54,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465841741] [2024-01-31 16:07:54,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465841741] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:07:54,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284236916] [2024-01-31 16:07:54,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:07:54,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:07:54,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:07:54,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:07:54,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:07:54,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:07:54,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:07:54,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:07:54,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:07:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:54,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:07:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:54,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284236916] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:07:54,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:07:54,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-01-31 16:07:54,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060090066] [2024-01-31 16:07:54,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:07:54,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:07:54,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:54,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:07:54,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:07:54,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 97 [2024-01-31 16:07:54,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 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) [2024-01-31 16:07:54,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:54,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 97 [2024-01-31 16:07:54,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand