./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/parallel-misc-3-extended.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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/parallel-misc-3-extended.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/parallel-misc-3-extended.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.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:14:02,077 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:14:02,152 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:14:02,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:14:02,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:14:02,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:14:02,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:14:02,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:14:02,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:14:02,178 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:14:02,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:14:02,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:14:02,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:14:02,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:14:02,180 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:14:02,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:14:02,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:14:02,181 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:14:02,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:14:02,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:14:02,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:14:02,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:14:02,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:14:02,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:14:02,186 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:14:02,187 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:14:02,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:14:02,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:14:02,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:14:02,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:14:02,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:14:02,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:14:02,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:14:02,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:14:02,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:14:02,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:14:02,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:14:02,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:14:02,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:14:02,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:14:02,190 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:14:02,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:14:02,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:14:02,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:14:02,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:14:02,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:14:02,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:14:02,476 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:14:02,476 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:14:02,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/parallel-misc-3-extended.wvr.yml/witness.yml [2024-02-07 19:14:02,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:14:02,644 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:14:02,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2024-02-07 19:14:03,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:14:03,899 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:14:03,902 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2024-02-07 19:14:03,910 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e73045bb0/076f0b12f012403fab30aefec3432929/FLAGa5f3a0a84 [2024-02-07 19:14:03,924 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e73045bb0/076f0b12f012403fab30aefec3432929 [2024-02-07 19:14:03,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:14:03,926 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:14:03,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:14:03,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:14:03,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:14:03,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:14:02" (1/2) ... [2024-02-07 19:14:03,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7025eb8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:14:03, skipping insertion in model container [2024-02-07 19:14:03,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:14:02" (1/2) ... [2024-02-07 19:14:03,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@218794d3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:14:03, skipping insertion in model container [2024-02-07 19:14:03,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:14:03" (2/2) ... [2024-02-07 19:14:03,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7025eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:03, skipping insertion in model container [2024-02-07 19:14:03,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:14:03" (2/2) ... [2024-02-07 19:14:03,939 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:14:03,973 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:14:03,974 INFO L76 edCorrectnessWitness]: Location invariant before [L53-L53] d1 == (_Bool)0 || d1 == (_Bool)1 [2024-02-07 19:14:03,974 INFO L76 edCorrectnessWitness]: Location invariant before [L74-L74] d2 == (_Bool)0 || d2 == (_Bool)1 [2024-02-07 19:14:03,974 INFO L76 edCorrectnessWitness]: Location invariant before [L87-L87] d3 == (_Bool)0 || d3 == (_Bool)1 [2024-02-07 19:14:03,975 INFO L76 edCorrectnessWitness]: Location invariant before [L75-L75] d2 == (_Bool)0 || d2 == (_Bool)1 [2024-02-07 19:14:03,975 INFO L76 edCorrectnessWitness]: Location invariant before [L114-L114] d3 == (_Bool)1 [2024-02-07 19:14:03,975 INFO L76 edCorrectnessWitness]: Location invariant before [L68-L68] -2147483646 <= pos [2024-02-07 19:14:03,975 INFO L76 edCorrectnessWitness]: Location invariant before [L65-L65] d2 == (_Bool)0 || d2 == (_Bool)1 [2024-02-07 19:14:03,975 INFO L76 edCorrectnessWitness]: Location invariant before [L77-L77] d2 == (_Bool)0 || d2 == (_Bool)1 [2024-02-07 19:14:03,975 INFO L76 edCorrectnessWitness]: Location invariant before [L112-L112] d1 == (_Bool)1 [2024-02-07 19:14:03,976 INFO L76 edCorrectnessWitness]: Location invariant before [L115-L115] g1 == (_Bool)1 [2024-02-07 19:14:03,976 INFO L76 edCorrectnessWitness]: Location invariant before [L43-L43] d1 == (_Bool)0 || d1 == (_Bool)1 [2024-02-07 19:14:03,976 INFO L76 edCorrectnessWitness]: Location invariant before [L90-L90] -2147483646 <= pos [2024-02-07 19:14:03,976 INFO L76 edCorrectnessWitness]: Location invariant before [L46-L46] -2147483647 <= pos [2024-02-07 19:14:03,976 INFO L76 edCorrectnessWitness]: Location invariant before [L96-L96] d3 == (_Bool)0 || d3 == (_Bool)1 [2024-02-07 19:14:03,976 INFO L76 edCorrectnessWitness]: Location invariant before [L52-L52] d1 == (_Bool)0 || d1 == (_Bool)1 [2024-02-07 19:14:03,976 INFO L76 edCorrectnessWitness]: Location invariant before [L50-L50] pos <= 2147483646 [2024-02-07 19:14:03,977 INFO L76 edCorrectnessWitness]: Location invariant before [L72-L72] pos <= 2147483645 [2024-02-07 19:14:03,977 INFO L76 edCorrectnessWitness]: Location invariant before [L94-L94] pos <= 2147483645 [2024-02-07 19:14:03,977 INFO L76 edCorrectnessWitness]: Location invariant before [L116-L116] g2 == (_Bool)1 [2024-02-07 19:14:03,977 INFO L76 edCorrectnessWitness]: Location invariant before [L55-L55] d1 == (_Bool)0 || d1 == (_Bool)1 [2024-02-07 19:14:03,977 INFO L76 edCorrectnessWitness]: Location invariant before [L119-L119] g3 == (_Bool)1 [2024-02-07 19:14:03,978 INFO L76 edCorrectnessWitness]: Location invariant before [L99-L99] d3 == (_Bool)0 || d3 == (_Bool)1 [2024-02-07 19:14:03,978 INFO L76 edCorrectnessWitness]: Location invariant before [L97-L97] d3 == (_Bool)0 || d3 == (_Bool)1 [2024-02-07 19:14:03,978 INFO L76 edCorrectnessWitness]: Location invariant before [L113-L113] d2 == (_Bool)1 [2024-02-07 19:14:03,999 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:14:04,178 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/parallel-misc-3-extended.wvr.c[2895,2908] [2024-02-07 19:14:04,183 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:14:04,190 INFO L206 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 [2024-02-07 19:14:04,265 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/parallel-misc-3-extended.wvr.c[2895,2908] [2024-02-07 19:14:04,266 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:14:04,283 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:14:04,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04 WrapperNode [2024-02-07 19:14:04,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:14:04,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:14:04,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:14:04,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:14:04,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,335 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2024-02-07 19:14:04,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:14:04,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:14:04,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:14:04,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:14:04,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,382 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-02-07 19:14:04,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,407 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:14:04,409 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:14:04,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:14:04,410 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:14:04,411 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (1/1) ... [2024-02-07 19:14:04,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:14:04,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:14:04,441 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) [2024-02-07 19:14:04,468 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 [2024-02-07 19:14:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 19:14:04,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 19:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 19:14:04,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 19:14:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 19:14:04,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 19:14:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:14:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:14:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:14:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:14:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:14:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:14:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:14:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:14:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:14:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:14:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:14:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:14:04,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:14:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:14:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:14:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:14:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:14:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:14:04,487 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:14:04,608 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:14:04,610 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:14:04,927 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:14:04,927 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:14:05,047 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:14:05,047 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-07 19:14:05,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:14:05 BoogieIcfgContainer [2024-02-07 19:14:05,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:14:05,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:14:05,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:14:05,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:14:05,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:14:02" (1/4) ... [2024-02-07 19:14:05,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364ae1a1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:14:05, skipping insertion in model container [2024-02-07 19:14:05,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:14:03" (2/4) ... [2024-02-07 19:14:05,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364ae1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:14:05, skipping insertion in model container [2024-02-07 19:14:05,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:14:04" (3/4) ... [2024-02-07 19:14:05,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364ae1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:14:05, skipping insertion in model container [2024-02-07 19:14:05,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:14:05" (4/4) ... [2024-02-07 19:14:05,055 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-02-07 19:14:05,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:14:05,071 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-02-07 19:14:05,071 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:14:05,139 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 19:14:05,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 93 transitions, 207 flow [2024-02-07 19:14:05,227 INFO L124 PetriNetUnfolderBase]: 12/90 cut-off events. [2024-02-07 19:14:05,228 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-07 19:14:05,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 90 events. 12/90 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 243 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 72. Up to 4 conditions per place. [2024-02-07 19:14:05,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 93 transitions, 207 flow [2024-02-07 19:14:05,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 89 transitions, 196 flow [2024-02-07 19:14:05,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:14:05,260 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;@500ed5d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:14:05,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-02-07 19:14:05,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:14:05,265 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 19:14:05,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:14:05,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:14:05,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 19:14:05,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:14:05,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:14:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash 13095, now seen corresponding path program 1 times [2024-02-07 19:14:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:14:05,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504908744] [2024-02-07 19:14:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:14:05,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:14:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:14:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:14:05,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:14:05,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504908744] [2024-02-07 19:14:05,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504908744] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:14:05,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:14:05,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:14:05,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204546658] [2024-02-07 19:14:05,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:14:05,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:14:05,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:14:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:14:05,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:14:05,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-02-07 19:14:05,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-02-07 19:14:05,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:14:05,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-02-07 19:14:05,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:14:07,744 INFO L124 PetriNetUnfolderBase]: 15347/22552 cut-off events. [2024-02-07 19:14:07,745 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-02-07 19:14:07,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41725 conditions, 22552 events. 15347/22552 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 151973 event pairs, 1797 based on Foata normal form. 307/15037 useless extension candidates. Maximal degree in co-relation 37680. Up to 14814 conditions per place. [2024-02-07 19:14:07,924 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 88 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2024-02-07 19:14:07,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 123 transitions, 459 flow [2024-02-07 19:14:07,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:14:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:14:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-02-07 19:14:07,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7240143369175627 [2024-02-07 19:14:07,939 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 196 flow. Second operand 3 states and 202 transitions. [2024-02-07 19:14:07,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 123 transitions, 459 flow [2024-02-07 19:14:07,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 123 transitions, 437 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-07 19:14:07,962 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 198 flow [2024-02-07 19:14:07,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-02-07 19:14:07,968 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -4 predicate places. [2024-02-07 19:14:07,968 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 198 flow [2024-02-07 19:14:07,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-02-07 19:14:07,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:14:07,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:14:07,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:14:07,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:14:07,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:14:07,970 INFO L85 PathProgramCache]: Analyzing trace with hash 406377, now seen corresponding path program 1 times [2024-02-07 19:14:07,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:14:07,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913925495] [2024-02-07 19:14:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:14:07,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:14:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:14:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:14:08,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:14:08,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913925495] [2024-02-07 19:14:08,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913925495] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:14:08,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:14:08,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:14:08,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922742015] [2024-02-07 19:14:08,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:14:08,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:14:08,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:14:08,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:14:08,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:14:08,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-02-07 19:14:08,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-02-07 19:14:08,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:14:08,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-02-07 19:14:08,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:14:10,012 INFO L124 PetriNetUnfolderBase]: 18519/28232 cut-off events. [2024-02-07 19:14:10,012 INFO L125 PetriNetUnfolderBase]: For 883/1147 co-relation queries the response was YES. [2024-02-07 19:14:10,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53097 conditions, 28232 events. 18519/28232 cut-off events. For 883/1147 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 211048 event pairs, 2353 based on Foata normal form. 451/19891 useless extension candidates. Maximal degree in co-relation 15402. Up to 18920 conditions per place. [2024-02-07 19:14:10,221 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 88 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2024-02-07 19:14:10,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 122 transitions, 453 flow [2024-02-07 19:14:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:14:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:14:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2024-02-07 19:14:10,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7168458781362007 [2024-02-07 19:14:10,227 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 198 flow. Second operand 3 states and 200 transitions. [2024-02-07 19:14:10,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 122 transitions, 453 flow [2024-02-07 19:14:10,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 122 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:14:10,231 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 210 flow [2024-02-07 19:14:10,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2024-02-07 19:14:10,232 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2024-02-07 19:14:10,232 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 210 flow [2024-02-07 19:14:10,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-02-07 19:14:10,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:14:10,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 19:14:10,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:14:10,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:14:10,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:14:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash 12598136, now seen corresponding path program 1 times [2024-02-07 19:14:10,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:14:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823149278] [2024-02-07 19:14:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:14:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:14:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:14:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:14:10,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:14:10,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823149278] [2024-02-07 19:14:10,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823149278] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:14:10,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:14:10,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:14:10,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557190207] [2024-02-07 19:14:10,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:14:10,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:14:10,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:14:10,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:14:10,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:14:10,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-02-07 19:14:10,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-02-07 19:14:10,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:14:10,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-02-07 19:14:10,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:14:12,486 INFO L124 PetriNetUnfolderBase]: 21187/32549 cut-off events. [2024-02-07 19:14:12,487 INFO L125 PetriNetUnfolderBase]: For 2104/2810 co-relation queries the response was YES. [2024-02-07 19:14:12,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63652 conditions, 32549 events. 21187/32549 cut-off events. For 2104/2810 co-relation queries the response was YES. Maximal size of possible extension queue 1800. Compared 258393 event pairs, 3313 based on Foata normal form. 549/24501 useless extension candidates. Maximal degree in co-relation 19072. Up to 21273 conditions per place. [2024-02-07 19:14:12,799 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 88 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-02-07 19:14:12,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 466 flow [2024-02-07 19:14:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:14:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:14:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-02-07 19:14:12,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7096774193548387 [2024-02-07 19:14:12,804 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 210 flow. Second operand 3 states and 198 transitions. [2024-02-07 19:14:12,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 466 flow [2024-02-07 19:14:12,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 463 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:14:12,810 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 222 flow [2024-02-07 19:14:12,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2024-02-07 19:14:12,812 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -2 predicate places. [2024-02-07 19:14:12,812 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 222 flow [2024-02-07 19:14:12,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-02-07 19:14:12,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:14:12,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:14:12,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:14:12,813 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:14:12,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:14:12,813 INFO L85 PathProgramCache]: Analyzing trace with hash 390542673, now seen corresponding path program 1 times [2024-02-07 19:14:12,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:14:12,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101576094] [2024-02-07 19:14:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:14:12,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:14:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:14:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:14:12,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:14:12,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101576094] [2024-02-07 19:14:12,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101576094] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:14:12,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:14:12,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:14:12,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826346778] [2024-02-07 19:14:12,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:14:12,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:14:12,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:14:12,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:14:12,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:14:12,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 93 [2024-02-07 19:14:12,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 222 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) [2024-02-07 19:14:12,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:14:12,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 93 [2024-02-07 19:14:12,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:14:14,611 INFO L124 PetriNetUnfolderBase]: 21785/35978 cut-off events. [2024-02-07 19:14:14,612 INFO L125 PetriNetUnfolderBase]: For 2103/2903 co-relation queries the response was YES. [2024-02-07 19:14:14,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69323 conditions, 35978 events. 21785/35978 cut-off events. For 2103/2903 co-relation queries the response was YES. Maximal size of possible extension queue 1805. Compared 313806 event pairs, 6261 based on Foata normal form. 809/27350 useless extension candidates. Maximal degree in co-relation 22240. Up to 13730 conditions per place. [2024-02-07 19:14:14,876 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 86 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2024-02-07 19:14:14,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 481 flow [2024-02-07 19:14:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:14:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:14:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2024-02-07 19:14:14,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7562724014336918 [2024-02-07 19:14:14,878 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 222 flow. Second operand 3 states and 211 transitions. [2024-02-07 19:14:14,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 124 transitions, 481 flow [2024-02-07 19:14:14,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 124 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:14:14,888 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 230 flow [2024-02-07 19:14:14,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-02-07 19:14:14,890 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2024-02-07 19:14:14,891 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 230 flow [2024-02-07 19:14:14,891 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) [2024-02-07 19:14:14,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:14:14,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:14:14,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:14:14,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:14:14,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:14:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash -778078618, now seen corresponding path program 1 times [2024-02-07 19:14:14,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:14:14,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864520856] [2024-02-07 19:14:14,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:14:14,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:14:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:14:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:14:14,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:14:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864520856] [2024-02-07 19:14:14,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864520856] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:14:14,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:14:14,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:14:14,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225288929] [2024-02-07 19:14:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:14:14,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:14:14,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:14:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:14:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:14:14,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 93 [2024-02-07 19:14:14,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-02-07 19:14:14,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:14:14,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 93 [2024-02-07 19:14:14,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:14:17,838 INFO L124 PetriNetUnfolderBase]: 33142/53524 cut-off events. [2024-02-07 19:14:17,839 INFO L125 PetriNetUnfolderBase]: For 4176/5614 co-relation queries the response was YES. [2024-02-07 19:14:17,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104627 conditions, 53524 events. 33142/53524 cut-off events. For 4176/5614 co-relation queries the response was YES. Maximal size of possible extension queue 2622. Compared 474882 event pairs, 10214 based on Foata normal form. 1309/40277 useless extension candidates. Maximal degree in co-relation 53874. Up to 22175 conditions per place. [2024-02-07 19:14:18,436 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 88 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2024-02-07 19:14:18,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 125 transitions, 501 flow [2024-02-07 19:14:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:14:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:14:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2024-02-07 19:14:18,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7562724014336918 [2024-02-07 19:14:18,438 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 230 flow. Second operand 3 states and 211 transitions. [2024-02-07 19:14:18,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 125 transitions, 501 flow [2024-02-07 19:14:18,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 125 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:14:18,447 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 238 flow [2024-02-07 19:14:18,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2024-02-07 19:14:18,448 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 0 predicate places. [2024-02-07 19:14:18,449 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 238 flow [2024-02-07 19:14:18,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-02-07 19:14:18,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:14:18,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:14:18,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:14:18,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:14:18,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:14:18,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1649367063, now seen corresponding path program 1 times [2024-02-07 19:14:18,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:14:18,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852470840] [2024-02-07 19:14:18,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:14:18,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:14:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:14:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:14:18,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:14:18,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852470840] [2024-02-07 19:14:18,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852470840] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:14:18,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:14:18,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:14:18,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976100606] [2024-02-07 19:14:18,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:14:18,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:14:18,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:14:18,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:14:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:14:18,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 93 [2024-02-07 19:14:18,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:14:18,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:14:18,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 93 [2024-02-07 19:14:18,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:14:22,963 INFO L124 PetriNetUnfolderBase]: 48485/77743 cut-off events. [2024-02-07 19:14:22,964 INFO L125 PetriNetUnfolderBase]: For 7794/10334 co-relation queries the response was YES. [2024-02-07 19:14:23,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154123 conditions, 77743 events. 48485/77743 cut-off events. For 7794/10334 co-relation queries the response was YES. Maximal size of possible extension queue 3617. Compared 705974 event pairs, 16141 based on Foata normal form. 1791/58054 useless extension candidates. Maximal degree in co-relation 84249. Up to 34027 conditions per place. [2024-02-07 19:14:23,595 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 90 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2024-02-07 19:14:23,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 126 transitions, 521 flow [2024-02-07 19:14:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:14:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:14:23,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2024-02-07 19:14:23,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7562724014336918 [2024-02-07 19:14:23,596 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 238 flow. Second operand 3 states and 211 transitions. [2024-02-07 19:14:23,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 126 transitions, 521 flow [2024-02-07 19:14:23,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 126 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:14:23,611 INFO L231 Difference]: Finished difference. Result has 88 places, 89 transitions, 246 flow [2024-02-07 19:14:23,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=88, PETRI_TRANSITIONS=89} [2024-02-07 19:14:23,612 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2024-02-07 19:14:23,612 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 89 transitions, 246 flow [2024-02-07 19:14:23,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:14:23,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:14:23,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:14:23,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:14:23,613 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:14:23,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:14:23,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1263690181, now seen corresponding path program 1 times [2024-02-07 19:14:23,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:14:23,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821731404] [2024-02-07 19:14:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:14:23,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:14:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:14:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:14:23,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:14:23,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821731404] [2024-02-07 19:14:23,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821731404] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:14:23,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:14:23,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:14:23,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284223719] [2024-02-07 19:14:23,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:14:23,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:14:23,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:14:23,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:14:23,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:14:23,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 93 [2024-02-07 19:14:23,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 89 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2024-02-07 19:14:23,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:14:23,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 93 [2024-02-07 19:14:23,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:14:27,996 INFO L124 PetriNetUnfolderBase]: 48611/77293 cut-off events. [2024-02-07 19:14:27,996 INFO L125 PetriNetUnfolderBase]: For 8161/10815 co-relation queries the response was YES. [2024-02-07 19:14:28,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155168 conditions, 77293 events. 48611/77293 cut-off events. For 8161/10815 co-relation queries the response was YES. Maximal size of possible extension queue 3617. Compared 697619 event pairs, 21991 based on Foata normal form. 0/55533 useless extension candidates. Maximal degree in co-relation 88242. Up to 59806 conditions per place. [2024-02-07 19:14:28,413 INFO L140 encePairwiseOnDemand]: 86/93 looper letters, 59 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-02-07 19:14:28,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 97 transitions, 390 flow [2024-02-07 19:14:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:14:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:14:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-02-07 19:14:28,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-02-07 19:14:28,415 INFO L175 Difference]: Start difference. First operand has 88 places, 89 transitions, 246 flow. Second operand 3 states and 189 transitions. [2024-02-07 19:14:28,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 97 transitions, 390 flow [2024-02-07 19:14:28,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 97 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:14:28,432 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 274 flow [2024-02-07 19:14:28,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2024-02-07 19:14:28,433 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2024-02-07 19:14:28,433 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 274 flow [2024-02-07 19:14:28,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2024-02-07 19:14:28,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:14:28,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:14:28,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:14:28,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:14:28,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:14:28,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1069496093, now seen corresponding path program 1 times [2024-02-07 19:14:28,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:14:28,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171028201] [2024-02-07 19:14:28,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:14:28,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:14:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:14:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:14:28,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:14:28,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171028201] [2024-02-07 19:14:28,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171028201] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:14:28,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:14:28,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:14:28,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238623162] [2024-02-07 19:14:28,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:14:28,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:14:28,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:14:28,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:14:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:14:28,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-02-07 19:14:28,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-02-07 19:14:28,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:14:28,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-02-07 19:14:28,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:14:37,537 INFO L124 PetriNetUnfolderBase]: 91956/133740 cut-off events. [2024-02-07 19:14:37,538 INFO L125 PetriNetUnfolderBase]: For 33511/39777 co-relation queries the response was YES. [2024-02-07 19:14:37,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310483 conditions, 133740 events. 91956/133740 cut-off events. For 33511/39777 co-relation queries the response was YES. Maximal size of possible extension queue 4668. Compared 1103259 event pairs, 43224 based on Foata normal form. 5406/103280 useless extension candidates. Maximal degree in co-relation 179800. Up to 82597 conditions per place. [2024-02-07 19:14:38,692 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 98 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2024-02-07 19:14:38,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 589 flow [2024-02-07 19:14:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:14:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:14:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-02-07 19:14:38,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-02-07 19:14:38,694 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 274 flow. Second operand 4 states and 240 transitions. [2024-02-07 19:14:38,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 589 flow [2024-02-07 19:14:38,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 129 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:14:38,718 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 303 flow [2024-02-07 19:14:38,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=303, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2024-02-07 19:14:38,719 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2024-02-07 19:14:38,719 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 303 flow [2024-02-07 19:14:38,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-02-07 19:14:38,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:14:38,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:14:38,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:14:38,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-07 19:14:38,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:14:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1343638059, now seen corresponding path program 1 times [2024-02-07 19:14:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:14:38,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847271267] [2024-02-07 19:14:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:14:38,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:14:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:14:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:14:38,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:14:38,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847271267] [2024-02-07 19:14:38,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847271267] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:14:38,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:14:38,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:14:38,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685885205] [2024-02-07 19:14:38,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:14:38,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:14:38,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:14:38,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:14:38,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:14:38,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-02-07 19:14:38,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2024-02-07 19:14:38,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:14:38,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-02-07 19:14:38,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand