./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3.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-exp3x3.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-exp3x3.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3.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 16:07:29,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:07:29,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:07:29,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:07:29,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:07:29,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:07:29,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:07:29,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:07:29,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:07:29,582 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:07:29,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:07:29,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:07:29,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:07:29,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:07:29,586 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:07:29,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:07:29,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:07:29,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:07:29,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:07:29,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:07:29,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:07:29,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:07:29,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:07:29,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:07:29,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:07:29,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:07:29,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:07:29,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:07:29,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:07:29,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:07:29,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:07:29,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:07:29,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:07:29,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:07:29,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:07:29,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:07:29,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:07:29,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:07:29,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:07:29,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:07:29,592 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:07:29,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:07:29,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:07:29,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:07:29,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:07:29,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:07:29,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:07:29,824 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:07:29,825 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:07:29,826 INFO L431 ainManager$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-exp3x3.wvr.yml/witness.yml [2024-01-31 16:07:29,949 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:07:29,950 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:07:29,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2024-01-31 16:07:30,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:07:31,135 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:07:31,136 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2024-01-31 16:07:31,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0c219d12/87b921f971774990bcc139593f724aaa/FLAGf578527ef [2024-01-31 16:07:31,161 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0c219d12/87b921f971774990bcc139593f724aaa [2024-01-31 16:07:31,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:07:31,162 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:07:31,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:07:31,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:07:31,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:07:31,168 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" (1/2) ... [2024-01-31 16:07:31,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3581fecc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:31, skipping insertion in model container [2024-01-31 16:07:31,169 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" (1/2) ... [2024-01-31 16:07:31,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7597e14 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:31, skipping insertion in model container [2024-01-31 16:07:31,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:07:31" (2/2) ... [2024-01-31 16:07:31,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3581fecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31, skipping insertion in model container [2024-01-31 16:07:31,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:07:31" (2/2) ... [2024-01-31 16:07:31,172 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:07:31,201 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:07:31,203 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,203 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (((x4 == 0U) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-01-31 16:07:31,203 INFO L98 nessWitnessExtractor]: Loop invariant at [L62-L62] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,203 INFO L98 nessWitnessExtractor]: Loop invariant at [L38-L38] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,203 INFO L98 nessWitnessExtractor]: Location invariant before [L39-L39] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,204 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,204 INFO L98 nessWitnessExtractor]: Loop invariant at [L78-L78] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,204 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,205 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,205 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] (((((x2 == 0U) && (x3 == 0U)) && (x4 == 0U)) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-01-31 16:07:31,205 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,205 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] ((x5 == 0U) && (x6 == 0U)) && (n == 0U) [2024-01-31 16:07:31,205 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] (x6 == 0U) && (n == 0U) [2024-01-31 16:07:31,205 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,205 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,205 INFO L98 nessWitnessExtractor]: Loop invariant at [L70-L70] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,206 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,206 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (((((((((((0LL - (long long )n) + (long long )x1 >= 0LL) && ((long long )n + (long long )x1 >= 0LL)) && ((0LL - (long long )n) - (long long )x1 >= 0LL)) && ((long long )n - (long long )x1 >= 0LL)) && (x1 == 0U)) && (x2 == 0U)) && (x3 == 0U)) && (x4 == 0U)) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-01-31 16:07:31,206 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] ((((x3 == 0U) && (x4 == 0U)) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-01-31 16:07:31,206 INFO L98 nessWitnessExtractor]: Loop invariant at [L46-L46] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,206 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,207 INFO L98 nessWitnessExtractor]: Loop invariant at [L54-L54] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,207 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,207 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] n == 0U [2024-01-31 16:07:31,207 INFO L98 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,225 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:07:31,389 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-exp3x3.wvr.c[2703,2716] [2024-01-31 16:07:31,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:07:31,400 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 [2024-01-31 16:07:31,480 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-exp3x3.wvr.c[2703,2716] [2024-01-31 16:07:31,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:07:31,492 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:07:31,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31 WrapperNode [2024-01-31 16:07:31,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:07:31,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:07:31,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:07:31,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:07:31,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,559 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2024-01-31 16:07:31,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:07:31,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:07:31,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:07:31,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:07:31,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,610 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-01-31 16:07:31,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,622 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:07:31,634 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:07:31,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:07:31,634 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:07:31,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (1/1) ... [2024-01-31 16:07:31,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:07:31,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:07:31,661 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 16:07:31,666 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 16:07:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:07:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:07:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:07:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:07:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:07:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:07:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:07:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:07:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:07:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:07:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:07:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:07:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:07:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:07:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:07:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-31 16:07:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-31 16:07:31,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-31 16:07:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-01-31 16:07:31,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-01-31 16:07:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:07:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:07:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:07:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:07:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:07:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:07:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:07:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-31 16:07:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:07:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:07:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:07:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:07:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:07:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:07:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:07:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:07:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-31 16:07:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:07:31,692 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 16:07:31,786 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:07:31,788 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:07:32,107 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:07:32,107 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:07:32,222 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:07:32,223 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:07:32,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:07:32 BoogieIcfgContainer [2024-01-31 16:07:32,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:07:32,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:07:32,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:07:32,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:07:32,230 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" (1/4) ... [2024-01-31 16:07:32,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35df5875 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:07:32, skipping insertion in model container [2024-01-31 16:07:32,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:07:31" (2/4) ... [2024-01-31 16:07:32,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35df5875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:07:32, skipping insertion in model container [2024-01-31 16:07:32,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:31" (3/4) ... [2024-01-31 16:07:32,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35df5875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:07:32, skipping insertion in model container [2024-01-31 16:07:32,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:07:32" (4/4) ... [2024-01-31 16:07:32,233 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-01-31 16:07:32,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:07:32,247 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-01-31 16:07:32,247 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:07:32,321 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-01-31 16:07:32,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 107 transitions, 256 flow [2024-01-31 16:07:32,402 INFO L124 PetriNetUnfolderBase]: 12/101 cut-off events. [2024-01-31 16:07:32,403 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:07:32,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 101 events. 12/101 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2024-01-31 16:07:32,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 107 transitions, 256 flow [2024-01-31 16:07:32,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 100 transitions, 236 flow [2024-01-31 16:07:32,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:07:32,427 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;@167cd57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:07:32,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-01-31 16:07:32,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:07:32,429 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:07:32,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:07:32,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:32,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:07:32,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-31 16:07:32,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash 15281, now seen corresponding path program 1 times [2024-01-31 16:07:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396854908] [2024-01-31 16:07:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:32,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:32,975 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 16:07:32,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:32,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396854908] [2024-01-31 16:07:32,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396854908] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:32,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:32,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:07:32,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641496347] [2024-01-31 16:07:32,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:32,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:32,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:33,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:33,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:33,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2024-01-31 16:07:33,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:33,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:33,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2024-01-31 16:07:33,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:41,691 INFO L124 PetriNetUnfolderBase]: 81889/116375 cut-off events. [2024-01-31 16:07:41,691 INFO L125 PetriNetUnfolderBase]: For 2857/2857 co-relation queries the response was YES. [2024-01-31 16:07:42,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215070 conditions, 116375 events. 81889/116375 cut-off events. For 2857/2857 co-relation queries the response was YES. Maximal size of possible extension queue 5353. Compared 904308 event pairs, 47228 based on Foata normal form. 33290/138290 useless extension candidates. Maximal degree in co-relation 176344. Up to 94592 conditions per place. [2024-01-31 16:07:43,117 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 54 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-01-31 16:07:43,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 93 transitions, 334 flow [2024-01-31 16:07:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-01-31 16:07:43,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2024-01-31 16:07:43,128 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 236 flow. Second operand 3 states and 192 transitions. [2024-01-31 16:07:43,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 93 transitions, 334 flow [2024-01-31 16:07:43,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 310 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-31 16:07:43,335 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 202 flow [2024-01-31 16:07:43,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2024-01-31 16:07:43,339 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -11 predicate places. [2024-01-31 16:07:43,339 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 202 flow [2024-01-31 16:07:43,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:43,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:43,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-31 16:07:43,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:07:43,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-31 16:07:43,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:43,341 INFO L85 PathProgramCache]: Analyzing trace with hash 474233, now seen corresponding path program 1 times [2024-01-31 16:07:43,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:43,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941780096] [2024-01-31 16:07:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:43,409 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 16:07:43,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:43,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941780096] [2024-01-31 16:07:43,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941780096] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:43,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:43,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:07:43,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476613854] [2024-01-31 16:07:43,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:43,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:43,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:43,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:43,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:43,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2024-01-31 16:07:43,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 16:07:43,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:43,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2024-01-31 16:07:43,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:50,240 INFO L124 PetriNetUnfolderBase]: 81889/116374 cut-off events. [2024-01-31 16:07:50,240 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-01-31 16:07:50,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212335 conditions, 116374 events. 81889/116374 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5353. Compared 904919 event pairs, 47228 based on Foata normal form. 0/105000 useless extension candidates. Maximal degree in co-relation 212326. Up to 94590 conditions per place. [2024-01-31 16:07:51,314 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 53 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-01-31 16:07:51,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 310 flow [2024-01-31 16:07:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-01-31 16:07:51,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5856697819314641 [2024-01-31 16:07:51,316 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 202 flow. Second operand 3 states and 188 transitions. [2024-01-31 16:07:51,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 310 flow [2024-01-31 16:07:51,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 92 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:51,319 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 200 flow [2024-01-31 16:07:51,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-01-31 16:07:51,320 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -12 predicate places. [2024-01-31 16:07:51,320 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 200 flow [2024-01-31 16:07:51,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 16:07:51,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:51,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 16:07:51,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:07:51,320 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-31 16:07:51,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash 14701691, now seen corresponding path program 1 times [2024-01-31 16:07:51,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:51,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725245247] [2024-01-31 16:07:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:51,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:51,408 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 16:07:51,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:51,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725245247] [2024-01-31 16:07:51,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725245247] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:51,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:51,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:07:51,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689845432] [2024-01-31 16:07:51,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:51,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:51,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:51,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:51,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:51,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 107 [2024-01-31 16:07:51,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 16:07:51,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:51,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 107 [2024-01-31 16:07:51,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:58,095 INFO L124 PetriNetUnfolderBase]: 81889/116373 cut-off events. [2024-01-31 16:07:58,095 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-01-31 16:07:58,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212333 conditions, 116373 events. 81889/116373 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5353. Compared 904963 event pairs, 47228 based on Foata normal form. 0/105000 useless extension candidates. Maximal degree in co-relation 212322. Up to 94588 conditions per place. [2024-01-31 16:07:59,449 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 52 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2024-01-31 16:07:59,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 91 transitions, 306 flow [2024-01-31 16:07:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:59,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2024-01-31 16:07:59,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5919003115264797 [2024-01-31 16:07:59,451 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 200 flow. Second operand 3 states and 190 transitions. [2024-01-31 16:07:59,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 91 transitions, 306 flow [2024-01-31 16:07:59,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:59,453 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 198 flow [2024-01-31 16:07:59,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-01-31 16:07:59,454 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -13 predicate places. [2024-01-31 16:07:59,454 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 198 flow [2024-01-31 16:07:59,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 16:07:59,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:59,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:07:59,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:07:59,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-31 16:07:59,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:59,455 INFO L85 PathProgramCache]: Analyzing trace with hash 455752919, now seen corresponding path program 1 times [2024-01-31 16:07:59,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:59,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625257049] [2024-01-31 16:07:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:59,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:59,497 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 16:07:59,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:59,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625257049] [2024-01-31 16:07:59,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625257049] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:59,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:59,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:07:59,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000883768] [2024-01-31 16:07:59,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:59,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:59,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:59,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:59,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:59,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 107 [2024-01-31 16:07:59,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 16:07:59,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:59,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 107 [2024-01-31 16:07:59,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:05,912 INFO L124 PetriNetUnfolderBase]: 81889/116372 cut-off events. [2024-01-31 16:08:05,913 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-01-31 16:08:06,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212331 conditions, 116372 events. 81889/116372 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5353. Compared 904511 event pairs, 47228 based on Foata normal form. 0/105000 useless extension candidates. Maximal degree in co-relation 212318. Up to 94586 conditions per place. [2024-01-31 16:08:07,070 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 51 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-01-31 16:08:07,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 302 flow [2024-01-31 16:08:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:08:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:08:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-01-31 16:08:07,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2024-01-31 16:08:07,071 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 198 flow. Second operand 3 states and 192 transitions. [2024-01-31 16:08:07,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 302 flow [2024-01-31 16:08:07,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:08:07,073 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 196 flow [2024-01-31 16:08:07,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-01-31 16:08:07,074 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -14 predicate places. [2024-01-31 16:08:07,074 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 196 flow [2024-01-31 16:08:07,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 16:08:07,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:07,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:08:07,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:08:07,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-01-31 16:08:07,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1243439084, now seen corresponding path program 1 times [2024-01-31 16:08:07,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:07,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195270895] [2024-01-31 16:08:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:07,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:07,117 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 16:08:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195270895] [2024-01-31 16:08:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195270895] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:07,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:07,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:08:07,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043740311] [2024-01-31 16:08:07,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:07,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:08:07,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:08:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:08:07,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 107 [2024-01-31 16:08:07,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 16:08:07,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:07,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 107 [2024-01-31 16:08:07,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand