./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.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-opt.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-opt.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3-opt.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 16:07:29,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:07:29,290 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:07:29,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:07:29,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:07:29,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:07:29,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:07:29,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:07:29,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:07:29,335 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:07:29,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:07:29,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:07:29,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:07:29,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:07:29,337 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:07:29,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:07:29,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:07:29,338 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:07:29,338 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:07:29,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:07:29,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:07:29,339 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:07:29,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:07:29,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:07:29,340 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:07:29,341 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:07:29,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:07:29,341 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:07:29,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:07:29,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:07:29,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:07:29,343 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:07:29,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:07:29,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:07:29,344 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:07:29,344 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:07:29,344 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:07:29,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:07:29,345 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:07:29,345 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:07:29,346 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:07:29,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:07:29,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:07:29,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:07:29,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:07:29,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:07:29,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:07:29,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:07:29,616 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:07:29,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2024-01-31 16:07:30,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:07:31,005 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:07:31,005 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2024-01-31 16:07:31,013 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f481dfb/ab170b36bea647ec96611031008373ba/FLAG6edc46f5d [2024-01-31 16:07:31,026 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f481dfb/ab170b36bea647ec96611031008373ba [2024-01-31 16:07:31,029 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:07:31,030 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:07:31,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3-opt.wvr.yml/witness.yml [2024-01-31 16:07:31,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:07:31,144 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:07:31,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:07:31,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:07:31,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:07:31,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:07:31" (1/2) ... [2024-01-31 16:07:31,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5324bc59 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 16:07:31,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:07:31" (1/2) ... [2024-01-31 16:07:31,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c252b7c 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 16:07:31,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:07:31" (2/2) ... [2024-01-31 16:07:31,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5324bc59 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 16:07:31,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:07:31" (2/2) ... [2024-01-31 16:07:31,170 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:07:31,195 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:07:31,196 INFO L98 nessWitnessExtractor]: Loop invariant at [L81-L81] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,197 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] (((((x2 == 0U) && (x3 == 0U)) && (x4 == 0U)) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-01-31 16:07:31,197 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] ((((x3 == 0U) && (x4 == 0U)) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-01-31 16:07:31,197 INFO L98 nessWitnessExtractor]: Loop invariant at [L41-L41] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,197 INFO L98 nessWitnessExtractor]: Location invariant before [L96-L96] ((x5 == 0U) && (x6 == 0U)) && (n == 0U) [2024-01-31 16:07:31,197 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,197 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (((((((((((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 16:07:31,198 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,198 INFO L98 nessWitnessExtractor]: Loop invariant at [L49-L49] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,198 INFO L98 nessWitnessExtractor]: Location invariant before [L97-L97] (x6 == 0U) && (n == 0U) [2024-01-31 16:07:31,198 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,198 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,198 INFO L98 nessWitnessExtractor]: Location invariant before [L85-L85] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,198 INFO L98 nessWitnessExtractor]: Loop invariant at [L57-L57] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,199 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,199 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,199 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,199 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] (((x4 == 0U) && (x5 == 0U)) && (x6 == 0U)) && (n == 0U) [2024-01-31 16:07:31,199 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,199 INFO L98 nessWitnessExtractor]: Loop invariant at [L73-L73] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,200 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,200 INFO L98 nessWitnessExtractor]: Loop invariant at [L65-L65] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,200 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,200 INFO L98 nessWitnessExtractor]: Location invariant before [L98-L98] n == 0U [2024-01-31 16:07:31,200 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] (unsigned long )_argptr == 0UL [2024-01-31 16:07:31,219 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:07:31,376 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-opt.wvr.c[2904,2917] [2024-01-31 16:07:31,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:07:31,390 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 16:07:31,492 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-opt.wvr.c[2904,2917] [2024-01-31 16:07:31,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:07:31,512 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:07:31,514 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:31 WrapperNode [2024-01-31 16:07:31,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:07:31,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:07:31,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:07:31,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:07:31,525 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,545 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,584 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2024-01-31 16:07:31,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:07:31,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:07:31,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:07:31,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:07:31,600 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,600 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,614 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,642 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 16:07:31,643 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,643 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,664 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,668 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,671 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,676 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:07:31,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:07:31,681 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:07:31,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:07:31,682 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 04:07:31" (1/1) ... [2024-01-31 16:07:31,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:07:31,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:07:31,712 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 16:07:31,724 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 16:07:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:07:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:07:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:07:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:07:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:07:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:07:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:07:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:07:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-31 16:07:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:07:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:07:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:07:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:07:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:07:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:07:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-31 16:07:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:07:31,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:07:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:07:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:07:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:07:31,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:07:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:07:31,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:07:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:07:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:07:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:07:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:07:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:07:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:07:31,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-31 16:07:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-31 16:07:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-31 16:07:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-01-31 16:07:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-01-31 16:07:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:07:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:07:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:07:31,770 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 16:07:31,888 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:07:31,890 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:07:32,224 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:07:32,224 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:07:32,463 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:07:32,464 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:07:32,466 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:07:32 BoogieIcfgContainer [2024-01-31 16:07:32,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:07:32,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:07:32,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:07:32,473 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:07:32,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:07:31" (1/4) ... [2024-01-31 16:07:32,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aea4617 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 16:07:32,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:07:31" (2/4) ... [2024-01-31 16:07:32,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aea4617 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 16:07:32,475 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 04:07:31" (3/4) ... [2024-01-31 16:07:32,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aea4617 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 16:07:32,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:07:32" (4/4) ... [2024-01-31 16:07:32,479 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2024-01-31 16:07:32,496 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:07:32,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-01-31 16:07:32,497 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:07:32,596 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-01-31 16:07:32,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 107 transitions, 256 flow [2024-01-31 16:07:32,697 INFO L124 PetriNetUnfolderBase]: 12/101 cut-off events. [2024-01-31 16:07:32,697 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-31 16:07:32,703 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 240 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 16:07:32,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 107 transitions, 256 flow [2024-01-31 16:07:32,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 100 transitions, 236 flow [2024-01-31 16:07:32,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:07:32,728 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;@72da9b6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:07:32,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-01-31 16:07:32,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:07:32,731 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:07:32,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:07:32,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:32,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:07:32,733 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 16:07:32,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash 15172, now seen corresponding path program 1 times [2024-01-31 16:07:32,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289883724] [2024-01-31 16:07:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:32,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:33,560 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 16:07:33,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:33,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289883724] [2024-01-31 16:07:33,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289883724] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:33,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:33,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:07:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630566162] [2024-01-31 16:07:33,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:33,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:33,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:33,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:33,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:33,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2024-01-31 16:07:33,657 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 16:07:33,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:33,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2024-01-31 16:07:33,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:45,066 INFO L124 PetriNetUnfolderBase]: 81529/115487 cut-off events. [2024-01-31 16:07:45,066 INFO L125 PetriNetUnfolderBase]: For 2857/2857 co-relation queries the response was YES. [2024-01-31 16:07:45,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213774 conditions, 115487 events. 81529/115487 cut-off events. For 2857/2857 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 891787 event pairs, 47060 based on Foata normal form. 34099/139755 useless extension candidates. Maximal degree in co-relation 175048. Up to 94184 conditions per place. [2024-01-31 16:07:46,630 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 54 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-01-31 16:07:46,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 93 transitions, 334 flow [2024-01-31 16:07:46,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-01-31 16:07:46,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2024-01-31 16:07:46,644 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 236 flow. Second operand 3 states and 192 transitions. [2024-01-31 16:07:46,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 93 transitions, 334 flow [2024-01-31 16:07:47,198 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 16:07:47,201 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 202 flow [2024-01-31 16:07:47,203 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 16:07:47,206 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -11 predicate places. [2024-01-31 16:07:47,207 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 202 flow [2024-01-31 16:07:47,207 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 16:07:47,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:47,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-31 16:07:47,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:07:47,211 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 16:07:47,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash 470817, now seen corresponding path program 1 times [2024-01-31 16:07:47,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:47,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002314516] [2024-01-31 16:07:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:47,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:47,327 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 16:07:47,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:47,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002314516] [2024-01-31 16:07:47,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002314516] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:47,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:47,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:07:47,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367811376] [2024-01-31 16:07:47,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:47,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:47,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:47,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2024-01-31 16:07:47,386 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 16:07:47,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:47,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2024-01-31 16:07:47,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:54,789 INFO L124 PetriNetUnfolderBase]: 81529/115486 cut-off events. [2024-01-31 16:07:54,790 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-01-31 16:07:55,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211039 conditions, 115486 events. 81529/115486 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 891609 event pairs, 47060 based on Foata normal form. 0/105656 useless extension candidates. Maximal degree in co-relation 211030. Up to 94182 conditions per place. [2024-01-31 16:07:56,144 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 53 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-01-31 16:07:56,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 310 flow [2024-01-31 16:07:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:56,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-01-31 16:07:56,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5856697819314641 [2024-01-31 16:07:56,146 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 202 flow. Second operand 3 states and 188 transitions. [2024-01-31 16:07:56,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 310 flow [2024-01-31 16:07:56,148 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 16:07:56,150 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 200 flow [2024-01-31 16:07:56,150 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 16:07:56,151 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -12 predicate places. [2024-01-31 16:07:56,151 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 200 flow [2024-01-31 16:07:56,151 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 16:07:56,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:56,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 16:07:56,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:07:56,152 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 16:07:56,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash 14595839, now seen corresponding path program 1 times [2024-01-31 16:07:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:56,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49255554] [2024-01-31 16:07:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:56,223 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 16:07:56,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:56,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49255554] [2024-01-31 16:07:56,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49255554] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:56,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:56,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:07:56,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023029750] [2024-01-31 16:07:56,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:56,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:56,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:56,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:56,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:56,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 107 [2024-01-31 16:07:56,281 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 16:07:56,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:56,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 107 [2024-01-31 16:07:56,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:03,578 INFO L124 PetriNetUnfolderBase]: 81529/115485 cut-off events. [2024-01-31 16:08:03,579 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-01-31 16:08:03,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211037 conditions, 115485 events. 81529/115485 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 892001 event pairs, 47060 based on Foata normal form. 0/105656 useless extension candidates. Maximal degree in co-relation 211026. Up to 94180 conditions per place. [2024-01-31 16:08:04,602 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 52 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2024-01-31 16:08:04,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 91 transitions, 306 flow [2024-01-31 16:08:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:08:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:08:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2024-01-31 16:08:04,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5919003115264797 [2024-01-31 16:08:04,604 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 200 flow. Second operand 3 states and 190 transitions. [2024-01-31 16:08:04,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 91 transitions, 306 flow [2024-01-31 16:08:04,606 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 16:08:04,607 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 198 flow [2024-01-31 16:08:04,607 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 16:08:04,608 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -13 predicate places. [2024-01-31 16:08:04,608 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 198 flow [2024-01-31 16:08:04,608 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 16:08:04,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:04,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:08:04,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:08:04,609 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 16:08:04,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:04,609 INFO L85 PathProgramCache]: Analyzing trace with hash 452471473, now seen corresponding path program 1 times [2024-01-31 16:08:04,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:04,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982904596] [2024-01-31 16:08:04,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:04,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:04,664 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 16:08:04,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:04,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982904596] [2024-01-31 16:08:04,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982904596] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:04,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:04,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:08:04,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372466447] [2024-01-31 16:08:04,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:04,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:08:04,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:04,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:08:04,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:08:04,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 107 [2024-01-31 16:08:04,700 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 16:08:04,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:04,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 107 [2024-01-31 16:08:04,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:11,931 INFO L124 PetriNetUnfolderBase]: 81529/115484 cut-off events. [2024-01-31 16:08:11,932 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-01-31 16:08:12,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211035 conditions, 115484 events. 81529/115484 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 891588 event pairs, 47060 based on Foata normal form. 0/105656 useless extension candidates. Maximal degree in co-relation 211022. Up to 94178 conditions per place. [2024-01-31 16:08:12,926 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 51 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-01-31 16:08:12,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 302 flow [2024-01-31 16:08:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:08:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:08:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-01-31 16:08:12,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2024-01-31 16:08:12,930 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 198 flow. Second operand 3 states and 192 transitions. [2024-01-31 16:08:12,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 302 flow [2024-01-31 16:08:12,931 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 16:08:12,932 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 196 flow [2024-01-31 16:08:12,933 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 16:08:12,933 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -14 predicate places. [2024-01-31 16:08:12,933 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 196 flow [2024-01-31 16:08:12,934 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 16:08:12,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:12,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:08:12,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:08:12,934 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 16:08:12,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1141714277, now seen corresponding path program 1 times [2024-01-31 16:08:12,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:12,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416501069] [2024-01-31 16:08:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:12,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:12,985 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 16:08:12,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:12,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416501069] [2024-01-31 16:08:12,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416501069] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:12,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:12,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:08:12,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444673445] [2024-01-31 16:08:12,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:12,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:08:12,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:12,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:08:12,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:08:13,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 107 [2024-01-31 16:08:13,021 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 16:08:13,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:13,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 107 [2024-01-31 16:08:13,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand