./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:51:12,941 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:51:13,023 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:51:13,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:51:13,029 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:51:13,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:51:13,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:51:13,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:51:13,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:51:13,063 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:51:13,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:51:13,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:51:13,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:51:13,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:51:13,065 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:51:13,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:51:13,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:51:13,066 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:51:13,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:51:13,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:51:13,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:51:13,068 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:51:13,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:51:13,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:51:13,068 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:51:13,068 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:51:13,069 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:51:13,069 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:51:13,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:51:13,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:51:13,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:51:13,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:51:13,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:51:13,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:51:13,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:51:13,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:51:13,072 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:51:13,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:51:13,073 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:51:13,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:51:13,073 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:51:13,073 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:51:13,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:51:13,074 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:51:13,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:51:13,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:51:13,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:51:13,370 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:51:13,370 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:51:13,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2024-02-19 14:51:14,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:51:14,666 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:51:14,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2024-02-19 14:51:14,672 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f8f230be/2bf6ad6609dd42dd85bc129e8f50f5a0/FLAG17d51c1a2 [2024-02-19 14:51:14,685 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f8f230be/2bf6ad6609dd42dd85bc129e8f50f5a0 [2024-02-19 14:51:14,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:51:14,692 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:51:14,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:51:14,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:51:14,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:51:14,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:14,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae55a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14, skipping insertion in model container [2024-02-19 14:51:14,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:14,715 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:51:14,861 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/popl20-figure1-alt.wvr.c[2087,2100] [2024-02-19 14:51:14,866 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:51:14,874 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:51:14,896 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/popl20-figure1-alt.wvr.c[2087,2100] [2024-02-19 14:51:14,901 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:51:14,922 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:51:14,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14 WrapperNode [2024-02-19 14:51:14,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:51:14,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:51:14,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:51:14,924 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:51:14,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:14,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:14,960 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2024-02-19 14:51:14,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:51:14,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:51:14,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:51:14,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:51:14,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:14,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:14,978 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:14,997 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-19 14:51:14,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:14,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:15,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:15,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:15,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:15,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:15,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:51:15,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:51:15,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:51:15,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:51:15,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (1/1) ... [2024-02-19 14:51:15,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:51:15,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:15,058 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) [2024-02-19 14:51:15,081 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 [2024-02-19 14:51:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:51:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:51:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:51:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:51:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:51:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:51:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:51:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:51:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:51:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:51:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:51:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:51:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 14:51:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 14:51:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:51:15,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:51:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:51:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:51:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:51:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:51:15,110 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:51:15,204 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:51:15,205 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:51:15,329 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:51:15,329 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:51:15,443 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:51:15,444 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-19 14:51:15,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:51:15 BoogieIcfgContainer [2024-02-19 14:51:15,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:51:15,445 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:51:15,446 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:51:15,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:51:15,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:51:14" (1/3) ... [2024-02-19 14:51:15,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d1a693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:51:15, skipping insertion in model container [2024-02-19 14:51:15,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:51:14" (2/3) ... [2024-02-19 14:51:15,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d1a693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:51:15, skipping insertion in model container [2024-02-19 14:51:15,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:51:15" (3/3) ... [2024-02-19 14:51:15,450 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-02-19 14:51:15,463 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:51:15,463 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:51:15,463 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:51:15,489 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-19 14:51:15,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-02-19 14:51:15,535 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-02-19 14:51:15,536 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-19 14:51:15,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-02-19 14:51:15,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-02-19 14:51:15,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-02-19 14:51:15,547 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:51:15,552 INFO L369 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@67dba6c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:51:15,552 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-19 14:51:15,567 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:51:15,570 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2024-02-19 14:51:15,571 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-19 14:51:15,571 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:15,571 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:15,572 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:15,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:15,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1814008270, now seen corresponding path program 1 times [2024-02-19 14:51:15,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:15,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268524818] [2024-02-19 14:51:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:15,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:16,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:16,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268524818] [2024-02-19 14:51:16,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268524818] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:51:16,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:51:16,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:51:16,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166855574] [2024-02-19 14:51:16,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:51:16,164 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:51:16,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:51:16,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:51:16,218 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-19 14:51:16,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:16,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:16,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-19 14:51:16,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:16,358 INFO L124 PetriNetUnfolderBase]: 84/189 cut-off events. [2024-02-19 14:51:16,359 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-02-19 14:51:16,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 189 events. 84/189 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 720 event pairs, 8 based on Foata normal form. 12/201 useless extension candidates. Maximal degree in co-relation 296. Up to 99 conditions per place. [2024-02-19 14:51:16,362 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 31 selfloop transitions, 4 changer transitions 11/49 dead transitions. [2024-02-19 14:51:16,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 226 flow [2024-02-19 14:51:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:51:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:51:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-02-19 14:51:16,371 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-02-19 14:51:16,373 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2024-02-19 14:51:16,373 INFO L507 AbstractCegarLoop]: Abstraction has has 31 places, 49 transitions, 226 flow [2024-02-19 14:51:16,374 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:16,374 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:16,374 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:16,374 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:51:16,374 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:16,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2012881630, now seen corresponding path program 2 times [2024-02-19 14:51:16,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:16,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522729951] [2024-02-19 14:51:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:16,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:16,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:16,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522729951] [2024-02-19 14:51:16,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522729951] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:51:16,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:51:16,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:51:16,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69579475] [2024-02-19 14:51:16,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:51:16,607 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:51:16,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:16,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:51:16,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:51:16,630 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-19 14:51:16,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 49 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:16,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:16,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-19 14:51:16,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:16,751 INFO L124 PetriNetUnfolderBase]: 86/201 cut-off events. [2024-02-19 14:51:16,752 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-02-19 14:51:16,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 201 events. 86/201 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 790 event pairs, 18 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 459. Up to 101 conditions per place. [2024-02-19 14:51:16,756 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 38 selfloop transitions, 11 changer transitions 20/72 dead transitions. [2024-02-19 14:51:16,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 72 transitions, 468 flow [2024-02-19 14:51:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:51:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:51:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-02-19 14:51:16,760 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-02-19 14:51:16,760 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2024-02-19 14:51:16,761 INFO L507 AbstractCegarLoop]: Abstraction has has 37 places, 72 transitions, 468 flow [2024-02-19 14:51:16,761 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:16,761 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:16,762 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:16,762 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:51:16,762 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:16,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2138382484, now seen corresponding path program 3 times [2024-02-19 14:51:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:16,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885264544] [2024-02-19 14:51:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:16,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:16,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:16,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885264544] [2024-02-19 14:51:16,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885264544] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:51:16,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:51:16,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:51:16,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99028889] [2024-02-19 14:51:16,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:51:16,921 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:51:16,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:51:16,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:51:16,935 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-19 14:51:16,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 72 transitions, 468 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:16,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:16,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-19 14:51:16,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:17,041 INFO L124 PetriNetUnfolderBase]: 93/221 cut-off events. [2024-02-19 14:51:17,041 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-02-19 14:51:17,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 221 events. 93/221 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 913 event pairs, 18 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 674. Up to 103 conditions per place. [2024-02-19 14:51:17,043 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 39 selfloop transitions, 13 changer transitions 29/84 dead transitions. [2024-02-19 14:51:17,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 84 transitions, 711 flow [2024-02-19 14:51:17,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:51:17,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:51:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-02-19 14:51:17,048 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-02-19 14:51:17,062 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 18 predicate places. [2024-02-19 14:51:17,063 INFO L507 AbstractCegarLoop]: Abstraction has has 43 places, 84 transitions, 711 flow [2024-02-19 14:51:17,063 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:17,063 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:17,063 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:17,063 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:51:17,064 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:17,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:17,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1962616758, now seen corresponding path program 4 times [2024-02-19 14:51:17,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:17,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111532879] [2024-02-19 14:51:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:17,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:17,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111532879] [2024-02-19 14:51:17,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111532879] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:51:17,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:51:17,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:51:17,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430932496] [2024-02-19 14:51:17,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:51:17,276 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:51:17,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:51:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:51:17,288 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-19 14:51:17,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 84 transitions, 711 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:17,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:17,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-19 14:51:17,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:17,405 INFO L124 PetriNetUnfolderBase]: 95/230 cut-off events. [2024-02-19 14:51:17,405 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-02-19 14:51:17,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 230 events. 95/230 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 988 event pairs, 18 based on Foata normal form. 1/231 useless extension candidates. Maximal degree in co-relation 875. Up to 105 conditions per place. [2024-02-19 14:51:17,407 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 40 selfloop transitions, 14 changer transitions 34/91 dead transitions. [2024-02-19 14:51:17,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 91 transitions, 949 flow [2024-02-19 14:51:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:51:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:51:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-02-19 14:51:17,408 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-02-19 14:51:17,409 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 24 predicate places. [2024-02-19 14:51:17,409 INFO L507 AbstractCegarLoop]: Abstraction has has 49 places, 91 transitions, 949 flow [2024-02-19 14:51:17,409 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:17,409 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:17,409 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:17,409 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 14:51:17,409 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:17,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:17,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1391161952, now seen corresponding path program 5 times [2024-02-19 14:51:17,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:17,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705750634] [2024-02-19 14:51:17,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:17,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:17,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:17,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705750634] [2024-02-19 14:51:17,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705750634] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:51:17,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:51:17,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:51:17,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620293317] [2024-02-19 14:51:17,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:51:17,574 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:51:17,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:17,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:51:17,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:51:17,589 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-19 14:51:17,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 91 transitions, 949 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:17,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:17,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-19 14:51:17,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:17,688 INFO L124 PetriNetUnfolderBase]: 94/234 cut-off events. [2024-02-19 14:51:17,688 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-02-19 14:51:17,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 234 events. 94/234 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1044 event pairs, 18 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 1062. Up to 105 conditions per place. [2024-02-19 14:51:17,691 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 38 selfloop transitions, 15 changer transitions 39/95 dead transitions. [2024-02-19 14:51:17,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 95 transitions, 1179 flow [2024-02-19 14:51:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:51:17,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:51:17,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-02-19 14:51:17,693 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-02-19 14:51:17,695 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 30 predicate places. [2024-02-19 14:51:17,695 INFO L507 AbstractCegarLoop]: Abstraction has has 55 places, 95 transitions, 1179 flow [2024-02-19 14:51:17,695 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:17,695 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:17,695 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:17,696 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-19 14:51:17,696 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:17,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:17,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1566927678, now seen corresponding path program 6 times [2024-02-19 14:51:17,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:17,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128697464] [2024-02-19 14:51:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:17,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:17,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128697464] [2024-02-19 14:51:17,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128697464] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:51:17,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:51:17,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:51:17,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154952958] [2024-02-19 14:51:17,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:51:17,854 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:51:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:17,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:51:17,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:51:17,865 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-19 14:51:17,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 95 transitions, 1179 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:17,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:17,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-19 14:51:17,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:17,944 INFO L124 PetriNetUnfolderBase]: 94/232 cut-off events. [2024-02-19 14:51:17,944 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-02-19 14:51:17,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 232 events. 94/232 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1035 event pairs, 18 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 1233. Up to 105 conditions per place. [2024-02-19 14:51:17,957 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 30 selfloop transitions, 13 changer transitions 48/94 dead transitions. [2024-02-19 14:51:17,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 1349 flow [2024-02-19 14:51:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:51:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:51:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-02-19 14:51:17,959 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-02-19 14:51:17,962 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 36 predicate places. [2024-02-19 14:51:17,962 INFO L507 AbstractCegarLoop]: Abstraction has has 61 places, 94 transitions, 1349 flow [2024-02-19 14:51:17,962 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-02-19 14:51:17,962 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:17,963 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:17,963 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-19 14:51:17,963 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:17,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:17,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1021308936, now seen corresponding path program 1 times [2024-02-19 14:51:17,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:17,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291404688] [2024-02-19 14:51:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:17,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291404688] [2024-02-19 14:51:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291404688] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698221457] [2024-02-19 14:51:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:18,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:18,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:18,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 14:51:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:18,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:18,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:18,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:18,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698221457] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:18,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:18,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 14:51:18,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267605650] [2024-02-19 14:51:18,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:18,613 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 14:51:18,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 14:51:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:51:18,623 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:18,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 94 transitions, 1349 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-19 14:51:18,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:18,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:18,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:19,649 INFO L124 PetriNetUnfolderBase]: 430/856 cut-off events. [2024-02-19 14:51:19,650 INFO L125 PetriNetUnfolderBase]: For 4310/4310 co-relation queries the response was YES. [2024-02-19 14:51:19,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6018 conditions, 856 events. 430/856 cut-off events. For 4310/4310 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4253 event pairs, 8 based on Foata normal form. 20/876 useless extension candidates. Maximal degree in co-relation 5330. Up to 567 conditions per place. [2024-02-19 14:51:19,656 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 161 selfloop transitions, 78 changer transitions 82/322 dead transitions. [2024-02-19 14:51:19,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 322 transitions, 4958 flow [2024-02-19 14:51:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-02-19 14:51:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-02-19 14:51:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 392 transitions. [2024-02-19 14:51:19,659 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38735177865612647 [2024-02-19 14:51:19,660 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 79 predicate places. [2024-02-19 14:51:19,660 INFO L507 AbstractCegarLoop]: Abstraction has has 104 places, 322 transitions, 4958 flow [2024-02-19 14:51:19,660 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-19 14:51:19,660 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:19,660 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:19,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-19 14:51:19,872 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:19,873 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:19,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1692677880, now seen corresponding path program 2 times [2024-02-19 14:51:19,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:19,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171172661] [2024-02-19 14:51:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:19,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:20,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:20,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171172661] [2024-02-19 14:51:20,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171172661] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:20,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277686680] [2024-02-19 14:51:20,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:51:20,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:20,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:20,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:20,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 14:51:20,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:51:20,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:20,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:20,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:20,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:20,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277686680] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:20,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:20,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 14:51:20,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115585777] [2024-02-19 14:51:20,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:20,384 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 14:51:20,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 14:51:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:51:20,401 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:20,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 322 transitions, 4958 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-19 14:51:20,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:20,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:20,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:21,208 INFO L124 PetriNetUnfolderBase]: 553/1102 cut-off events. [2024-02-19 14:51:21,209 INFO L125 PetriNetUnfolderBase]: For 5371/5371 co-relation queries the response was YES. [2024-02-19 14:51:21,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8849 conditions, 1102 events. 553/1102 cut-off events. For 5371/5371 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5960 event pairs, 16 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 8036. Up to 765 conditions per place. [2024-02-19 14:51:21,217 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 231 selfloop transitions, 119 changer transitions 102/453 dead transitions. [2024-02-19 14:51:21,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 453 transitions, 7796 flow [2024-02-19 14:51:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-02-19 14:51:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-02-19 14:51:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 320 transitions. [2024-02-19 14:51:21,219 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36613272311212813 [2024-02-19 14:51:21,220 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 116 predicate places. [2024-02-19 14:51:21,220 INFO L507 AbstractCegarLoop]: Abstraction has has 141 places, 453 transitions, 7796 flow [2024-02-19 14:51:21,220 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-19 14:51:21,220 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:21,220 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:21,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:51:21,431 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-02-19 14:51:21,434 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:21,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:21,435 INFO L85 PathProgramCache]: Analyzing trace with hash -708333044, now seen corresponding path program 3 times [2024-02-19 14:51:21,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:21,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203877300] [2024-02-19 14:51:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:21,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:21,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:21,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203877300] [2024-02-19 14:51:21,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203877300] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:21,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435183075] [2024-02-19 14:51:21,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:51:21,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:21,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:21,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:21,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 14:51:21,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:51:21,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:21,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:21,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:21,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:21,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435183075] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:21,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:21,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 14:51:21,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145102672] [2024-02-19 14:51:21,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:21,887 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 14:51:21,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:21,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 14:51:21,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:51:21,900 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:21,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 453 transitions, 7796 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-19 14:51:21,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:21,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:21,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:23,628 INFO L124 PetriNetUnfolderBase]: 857/1698 cut-off events. [2024-02-19 14:51:23,628 INFO L125 PetriNetUnfolderBase]: For 7114/7114 co-relation queries the response was YES. [2024-02-19 14:51:23,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15216 conditions, 1698 events. 857/1698 cut-off events. For 7114/7114 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10103 event pairs, 8 based on Foata normal form. 2/1700 useless extension candidates. Maximal degree in co-relation 14117. Up to 1242 conditions per place. [2024-02-19 14:51:23,642 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 369 selfloop transitions, 247 changer transitions 134/751 dead transitions. [2024-02-19 14:51:23,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 751 transitions, 14213 flow [2024-02-19 14:51:23,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-02-19 14:51:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-02-19 14:51:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 584 transitions. [2024-02-19 14:51:23,646 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3627329192546584 [2024-02-19 14:51:23,647 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 185 predicate places. [2024-02-19 14:51:23,647 INFO L507 AbstractCegarLoop]: Abstraction has has 210 places, 751 transitions, 14213 flow [2024-02-19 14:51:23,647 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-19 14:51:23,647 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:23,648 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:23,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-02-19 14:51:23,859 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:23,860 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:23,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash -532567318, now seen corresponding path program 4 times [2024-02-19 14:51:23,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:23,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557681691] [2024-02-19 14:51:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:24,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:24,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557681691] [2024-02-19 14:51:24,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557681691] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:24,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055620243] [2024-02-19 14:51:24,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:51:24,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:24,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:24,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:24,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 14:51:24,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:51:24,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:24,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:24,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:24,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:24,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055620243] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:24,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:24,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 14:51:24,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660636247] [2024-02-19 14:51:24,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:24,357 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 14:51:24,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:24,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 14:51:24,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:51:24,371 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:24,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 751 transitions, 14213 flow. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 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) [2024-02-19 14:51:24,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:24,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:24,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:26,418 INFO L124 PetriNetUnfolderBase]: 1147/2219 cut-off events. [2024-02-19 14:51:26,419 INFO L125 PetriNetUnfolderBase]: For 9631/9631 co-relation queries the response was YES. [2024-02-19 14:51:26,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22121 conditions, 2219 events. 1147/2219 cut-off events. For 9631/9631 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13578 event pairs, 12 based on Foata normal form. 2/2221 useless extension candidates. Maximal degree in co-relation 20666. Up to 1675 conditions per place. [2024-02-19 14:51:26,447 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 480 selfloop transitions, 350 changer transitions 149/980 dead transitions. [2024-02-19 14:51:26,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 980 transitions, 20418 flow [2024-02-19 14:51:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-02-19 14:51:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2024-02-19 14:51:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 619 transitions. [2024-02-19 14:51:26,454 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37905695039804044 [2024-02-19 14:51:26,454 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 253 predicate places. [2024-02-19 14:51:26,454 INFO L507 AbstractCegarLoop]: Abstraction has has 278 places, 980 transitions, 20418 flow [2024-02-19 14:51:26,456 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 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) [2024-02-19 14:51:26,456 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:26,456 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:26,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-19 14:51:26,667 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:26,668 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:26,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:26,669 INFO L85 PathProgramCache]: Analyzing trace with hash 213046732, now seen corresponding path program 5 times [2024-02-19 14:51:26,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:26,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196198595] [2024-02-19 14:51:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:26,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:26,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:26,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196198595] [2024-02-19 14:51:26,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196198595] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:26,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580778012] [2024-02-19 14:51:26,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:51:26,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:26,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:26,833 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:26,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-19 14:51:26,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:51:26,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:26,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:26,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:27,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580778012] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:27,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:27,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-19 14:51:27,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994072033] [2024-02-19 14:51:27,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:27,133 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 14:51:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 14:51:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:51:27,142 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:27,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 980 transitions, 20418 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-19 14:51:27,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:27,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:27,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:27,845 INFO L124 PetriNetUnfolderBase]: 1161/2259 cut-off events. [2024-02-19 14:51:27,845 INFO L125 PetriNetUnfolderBase]: For 9941/9941 co-relation queries the response was YES. [2024-02-19 14:51:27,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24772 conditions, 2259 events. 1161/2259 cut-off events. For 9941/9941 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13978 event pairs, 12 based on Foata normal form. 2/2261 useless extension candidates. Maximal degree in co-relation 23162. Up to 1704 conditions per place. [2024-02-19 14:51:27,865 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 597 selfloop transitions, 253 changer transitions 159/1010 dead transitions. [2024-02-19 14:51:27,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1010 transitions, 23048 flow [2024-02-19 14:51:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-19 14:51:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-19 14:51:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 158 transitions. [2024-02-19 14:51:27,867 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36155606407322655 [2024-02-19 14:51:27,867 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 271 predicate places. [2024-02-19 14:51:27,867 INFO L507 AbstractCegarLoop]: Abstraction has has 296 places, 1010 transitions, 23048 flow [2024-02-19 14:51:27,868 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-19 14:51:27,868 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:27,868 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:27,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-02-19 14:51:28,079 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-02-19 14:51:28,079 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:28,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:28,080 INFO L85 PathProgramCache]: Analyzing trace with hash -818026232, now seen corresponding path program 6 times [2024-02-19 14:51:28,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:28,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128137261] [2024-02-19 14:51:28,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:28,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:28,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:28,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128137261] [2024-02-19 14:51:28,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128137261] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:28,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321634536] [2024-02-19 14:51:28,232 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:51:28,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:28,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:28,234 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:28,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-19 14:51:28,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 14:51:28,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:28,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:28,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:28,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:28,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321634536] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:28,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:28,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-19 14:51:28,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447336434] [2024-02-19 14:51:28,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:28,590 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:51:28,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:51:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:51:28,603 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:28,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1010 transitions, 23048 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:28,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:28,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:28,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:29,466 INFO L124 PetriNetUnfolderBase]: 1186/2366 cut-off events. [2024-02-19 14:51:29,467 INFO L125 PetriNetUnfolderBase]: For 10086/10086 co-relation queries the response was YES. [2024-02-19 14:51:29,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28401 conditions, 2366 events. 1186/2366 cut-off events. For 10086/10086 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15141 event pairs, 12 based on Foata normal form. 2/2368 useless extension candidates. Maximal degree in co-relation 26632. Up to 1800 conditions per place. [2024-02-19 14:51:29,486 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 636 selfloop transitions, 258 changer transitions 190/1085 dead transitions. [2024-02-19 14:51:29,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 1085 transitions, 27049 flow [2024-02-19 14:51:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-02-19 14:51:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-02-19 14:51:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 178 transitions. [2024-02-19 14:51:29,488 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35177865612648224 [2024-02-19 14:51:29,488 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 292 predicate places. [2024-02-19 14:51:29,488 INFO L507 AbstractCegarLoop]: Abstraction has has 317 places, 1085 transitions, 27049 flow [2024-02-19 14:51:29,488 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:29,489 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:29,489 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:29,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-19 14:51:29,700 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:29,700 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:29,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:29,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1893737388, now seen corresponding path program 7 times [2024-02-19 14:51:29,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:29,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111790296] [2024-02-19 14:51:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:29,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:29,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:29,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111790296] [2024-02-19 14:51:29,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111790296] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:29,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562558045] [2024-02-19 14:51:29,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:51:29,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:29,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:29,816 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:29,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-19 14:51:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:29,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:29,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:30,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:30,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562558045] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:30,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:30,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-19 14:51:30,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587833753] [2024-02-19 14:51:30,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:30,135 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:51:30,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:30,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:51:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:51:30,143 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:30,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 1085 transitions, 27049 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:30,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:30,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:30,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:31,238 INFO L124 PetriNetUnfolderBase]: 1202/2408 cut-off events. [2024-02-19 14:51:31,239 INFO L125 PetriNetUnfolderBase]: For 10250/10250 co-relation queries the response was YES. [2024-02-19 14:51:31,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31307 conditions, 2408 events. 1202/2408 cut-off events. For 10250/10250 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15610 event pairs, 8 based on Foata normal form. 2/2410 useless extension candidates. Maximal degree in co-relation 29375. Up to 1836 conditions per place. [2024-02-19 14:51:31,259 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 643 selfloop transitions, 270 changer transitions 200/1114 dead transitions. [2024-02-19 14:51:31,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1114 transitions, 30005 flow [2024-02-19 14:51:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-02-19 14:51:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-02-19 14:51:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 204 transitions. [2024-02-19 14:51:31,260 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3411371237458194 [2024-02-19 14:51:31,261 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 317 predicate places. [2024-02-19 14:51:31,261 INFO L507 AbstractCegarLoop]: Abstraction has has 342 places, 1114 transitions, 30005 flow [2024-02-19 14:51:31,261 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:31,261 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:31,261 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:31,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-19 14:51:31,472 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:31,473 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:31,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash 222209566, now seen corresponding path program 8 times [2024-02-19 14:51:31,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:31,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144773734] [2024-02-19 14:51:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:31,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:31,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:31,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144773734] [2024-02-19 14:51:31,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144773734] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:31,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512216618] [2024-02-19 14:51:31,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:51:31,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:31,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:31,589 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:31,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-19 14:51:31,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:51:31,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:31,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:31,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:31,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512216618] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:31,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:31,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-19 14:51:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568419591] [2024-02-19 14:51:31,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:31,934 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:51:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:51:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:51:31,952 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:31,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 1114 transitions, 30005 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:31,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:31,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:31,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:32,999 INFO L124 PetriNetUnfolderBase]: 1210/2438 cut-off events. [2024-02-19 14:51:32,999 INFO L125 PetriNetUnfolderBase]: For 10305/10305 co-relation queries the response was YES. [2024-02-19 14:51:33,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34129 conditions, 2438 events. 1210/2438 cut-off events. For 10305/10305 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15911 event pairs, 8 based on Foata normal form. 2/2440 useless extension candidates. Maximal degree in co-relation 32030. Up to 1861 conditions per place. [2024-02-19 14:51:33,022 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 628 selfloop transitions, 300 changer transitions 210/1139 dead transitions. [2024-02-19 14:51:33,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 1139 transitions, 32933 flow [2024-02-19 14:51:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-19 14:51:33,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-19 14:51:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 219 transitions. [2024-02-19 14:51:33,023 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34006211180124224 [2024-02-19 14:51:33,024 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 344 predicate places. [2024-02-19 14:51:33,024 INFO L507 AbstractCegarLoop]: Abstraction has has 369 places, 1139 transitions, 32933 flow [2024-02-19 14:51:33,024 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:33,024 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:33,024 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:33,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-19 14:51:33,235 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-19 14:51:33,235 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:33,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash -853501590, now seen corresponding path program 9 times [2024-02-19 14:51:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:33,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932572255] [2024-02-19 14:51:33,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:33,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:33,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932572255] [2024-02-19 14:51:33,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932572255] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582048557] [2024-02-19 14:51:33,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:51:33,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:33,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:33,353 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:33,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-19 14:51:33,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:51:33,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:33,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:33,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:33,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:33,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582048557] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:33,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:33,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-19 14:51:33,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466413245] [2024-02-19 14:51:33,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:33,693 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:51:33,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:51:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:51:33,703 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:33,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 1139 transitions, 32933 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:33,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:33,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:33,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:34,851 INFO L124 PetriNetUnfolderBase]: 1215/2456 cut-off events. [2024-02-19 14:51:34,852 INFO L125 PetriNetUnfolderBase]: For 10356/10356 co-relation queries the response was YES. [2024-02-19 14:51:34,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36829 conditions, 2456 events. 1215/2456 cut-off events. For 10356/10356 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16105 event pairs, 12 based on Foata normal form. 1/2457 useless extension candidates. Maximal degree in co-relation 34576. Up to 1877 conditions per place. [2024-02-19 14:51:34,870 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 639 selfloop transitions, 297 changer transitions 215/1152 dead transitions. [2024-02-19 14:51:34,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1152 transitions, 35619 flow [2024-02-19 14:51:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-19 14:51:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-19 14:51:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 216 transitions. [2024-02-19 14:51:34,871 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33540372670807456 [2024-02-19 14:51:34,872 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 371 predicate places. [2024-02-19 14:51:34,872 INFO L507 AbstractCegarLoop]: Abstraction has has 396 places, 1152 transitions, 35619 flow [2024-02-19 14:51:34,872 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:34,872 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:34,872 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:34,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-19 14:51:35,083 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-19 14:51:35,083 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:35,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1904046476, now seen corresponding path program 10 times [2024-02-19 14:51:35,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:35,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166496044] [2024-02-19 14:51:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:35,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:35,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:35,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166496044] [2024-02-19 14:51:35,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166496044] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:35,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681251844] [2024-02-19 14:51:35,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:51:35,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:35,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:35,200 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:35,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-19 14:51:35,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:51:35,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:35,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:35,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:35,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:35,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681251844] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:35,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:35,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-19 14:51:35,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916147264] [2024-02-19 14:51:35,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:35,496 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:51:35,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:35,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:51:35,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:51:35,507 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:35,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1152 transitions, 35619 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:35,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:35,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:35,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:36,532 INFO L124 PetriNetUnfolderBase]: 1221/2480 cut-off events. [2024-02-19 14:51:36,532 INFO L125 PetriNetUnfolderBase]: For 10411/10411 co-relation queries the response was YES. [2024-02-19 14:51:36,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39657 conditions, 2480 events. 1221/2480 cut-off events. For 10411/10411 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 16395 event pairs, 12 based on Foata normal form. 2/2482 useless extension candidates. Maximal degree in co-relation 37230. Up to 1897 conditions per place. [2024-02-19 14:51:36,559 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 671 selfloop transitions, 275 changer transitions 225/1172 dead transitions. [2024-02-19 14:51:36,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1172 transitions, 38589 flow [2024-02-19 14:51:36,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-19 14:51:36,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-19 14:51:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 163 transitions. [2024-02-19 14:51:36,560 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35434782608695653 [2024-02-19 14:51:36,561 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 390 predicate places. [2024-02-19 14:51:36,561 INFO L507 AbstractCegarLoop]: Abstraction has has 415 places, 1172 transitions, 38589 flow [2024-02-19 14:51:36,561 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:36,561 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:36,561 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:36,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-19 14:51:36,772 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-02-19 14:51:36,772 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:36,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:36,772 INFO L85 PathProgramCache]: Analyzing trace with hash 462655714, now seen corresponding path program 11 times [2024-02-19 14:51:36,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:36,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6993269] [2024-02-19 14:51:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:36,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:36,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:36,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6993269] [2024-02-19 14:51:36,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6993269] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:36,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728757191] [2024-02-19 14:51:36,951 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:51:36,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:36,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:36,952 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:37,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-19 14:51:37,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:51:37,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:37,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:37,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:37,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:37,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728757191] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:37,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:37,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-19 14:51:37,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999841190] [2024-02-19 14:51:37,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:37,328 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:51:37,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:37,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:51:37,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:51:37,374 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:37,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 1172 transitions, 38589 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:37,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:37,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:37,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:39,132 INFO L124 PetriNetUnfolderBase]: 1322/2682 cut-off events. [2024-02-19 14:51:39,133 INFO L125 PetriNetUnfolderBase]: For 10740/10740 co-relation queries the response was YES. [2024-02-19 14:51:39,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45676 conditions, 2682 events. 1322/2682 cut-off events. For 10740/10740 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 18160 event pairs, 8 based on Foata normal form. 3/2685 useless extension candidates. Maximal degree in co-relation 43052. Up to 2083 conditions per place. [2024-02-19 14:51:39,155 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 685 selfloop transitions, 380 changer transitions 240/1306 dead transitions. [2024-02-19 14:51:39,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1306 transitions, 45683 flow [2024-02-19 14:51:39,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-02-19 14:51:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-02-19 14:51:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 376 transitions. [2024-02-19 14:51:39,157 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34057971014492755 [2024-02-19 14:51:39,157 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 437 predicate places. [2024-02-19 14:51:39,157 INFO L507 AbstractCegarLoop]: Abstraction has has 462 places, 1306 transitions, 45683 flow [2024-02-19 14:51:39,157 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:39,158 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:39,158 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:39,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-02-19 14:51:39,368 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-19 14:51:39,368 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:39,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2103264248, now seen corresponding path program 12 times [2024-02-19 14:51:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9105709] [2024-02-19 14:51:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:39,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:39,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9105709] [2024-02-19 14:51:39,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9105709] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:39,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322602994] [2024-02-19 14:51:39,498 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:51:39,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:39,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:39,499 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:39,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-19 14:51:39,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 14:51:39,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:39,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:39,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:39,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:39,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322602994] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:39,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:39,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-19 14:51:39,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022590923] [2024-02-19 14:51:39,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:39,844 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:51:39,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:39,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:51:39,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:51:39,861 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:39,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1306 transitions, 45683 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:39,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:39,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:39,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:42,499 INFO L124 PetriNetUnfolderBase]: 1439/2925 cut-off events. [2024-02-19 14:51:42,499 INFO L125 PetriNetUnfolderBase]: For 10984/10984 co-relation queries the response was YES. [2024-02-19 14:51:42,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52703 conditions, 2925 events. 1439/2925 cut-off events. For 10984/10984 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 20222 event pairs, 0 based on Foata normal form. 3/2928 useless extension candidates. Maximal degree in co-relation 49756. Up to 2285 conditions per place. [2024-02-19 14:51:42,529 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 737 selfloop transitions, 481 changer transitions 257/1476 dead transitions. [2024-02-19 14:51:42,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1476 transitions, 54627 flow [2024-02-19 14:51:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-02-19 14:51:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-02-19 14:51:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 529 transitions. [2024-02-19 14:51:42,531 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3382352941176471 [2024-02-19 14:51:42,532 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 504 predicate places. [2024-02-19 14:51:42,532 INFO L507 AbstractCegarLoop]: Abstraction has has 529 places, 1476 transitions, 54627 flow [2024-02-19 14:51:42,532 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 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) [2024-02-19 14:51:42,532 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:42,532 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:42,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-19 14:51:42,743 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-19 14:51:42,743 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:42,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:42,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1927498522, now seen corresponding path program 13 times [2024-02-19 14:51:42,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:42,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967516504] [2024-02-19 14:51:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:42,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:42,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:42,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967516504] [2024-02-19 14:51:42,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967516504] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:42,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133763245] [2024-02-19 14:51:42,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:51:42,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:42,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:42,876 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:42,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-19 14:51:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:42,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-19 14:51:42,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:43,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:43,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133763245] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:43,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:43,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-19 14:51:43,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230224685] [2024-02-19 14:51:43,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:43,264 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:51:43,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:43,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:51:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:51:43,279 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:43,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 1476 transitions, 54627 flow. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 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) [2024-02-19 14:51:43,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:43,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:43,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:45,660 INFO L124 PetriNetUnfolderBase]: 1695/3372 cut-off events. [2024-02-19 14:51:45,660 INFO L125 PetriNetUnfolderBase]: For 12569/12569 co-relation queries the response was YES. [2024-02-19 14:51:45,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64232 conditions, 3372 events. 1695/3372 cut-off events. For 12569/12569 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 23497 event pairs, 26 based on Foata normal form. 4/3376 useless extension candidates. Maximal degree in co-relation 60991. Up to 2670 conditions per place. [2024-02-19 14:51:45,701 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 915 selfloop transitions, 531 changer transitions 282/1729 dead transitions. [2024-02-19 14:51:45,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1729 transitions, 67448 flow [2024-02-19 14:51:45,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-02-19 14:51:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-02-19 14:51:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 470 transitions. [2024-02-19 14:51:45,703 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3784219001610306 [2024-02-19 14:51:45,704 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 552 predicate places. [2024-02-19 14:51:45,704 INFO L507 AbstractCegarLoop]: Abstraction has has 577 places, 1729 transitions, 67448 flow [2024-02-19 14:51:45,704 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 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) [2024-02-19 14:51:45,704 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:45,704 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:45,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-02-19 14:51:45,915 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:45,916 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:45,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash -323702855, now seen corresponding path program 1 times [2024-02-19 14:51:45,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:45,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838522189] [2024-02-19 14:51:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:45,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:46,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:46,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838522189] [2024-02-19 14:51:46,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838522189] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:46,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656810872] [2024-02-19 14:51:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:46,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:46,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:46,066 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:46,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-19 14:51:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:46,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:51:46,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:46,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:46,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656810872] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:46,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:46,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-02-19 14:51:46,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232634047] [2024-02-19 14:51:46,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:46,397 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-19 14:51:46,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:46,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-19 14:51:46,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2024-02-19 14:51:46,412 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:46,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 1729 transitions, 67448 flow. Second operand has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 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) [2024-02-19 14:51:46,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:46,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:46,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:48,838 INFO L124 PetriNetUnfolderBase]: 1782/3526 cut-off events. [2024-02-19 14:51:48,838 INFO L125 PetriNetUnfolderBase]: For 13492/13492 co-relation queries the response was YES. [2024-02-19 14:51:48,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70750 conditions, 3526 events. 1782/3526 cut-off events. For 13492/13492 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24574 event pairs, 18 based on Foata normal form. 2/3528 useless extension candidates. Maximal degree in co-relation 67350. Up to 2809 conditions per place. [2024-02-19 14:51:48,875 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 991 selfloop transitions, 512 changer transitions 320/1824 dead transitions. [2024-02-19 14:51:48,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1824 transitions, 74795 flow [2024-02-19 14:51:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-02-19 14:51:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-02-19 14:51:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 428 transitions. [2024-02-19 14:51:48,877 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37217391304347824 [2024-02-19 14:51:48,877 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 601 predicate places. [2024-02-19 14:51:48,877 INFO L507 AbstractCegarLoop]: Abstraction has has 626 places, 1824 transitions, 74795 flow [2024-02-19 14:51:48,878 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 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) [2024-02-19 14:51:48,878 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:48,878 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:48,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-19 14:51:49,091 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:49,091 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:49,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:49,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1665056232, now seen corresponding path program 14 times [2024-02-19 14:51:49,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:49,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339121096] [2024-02-19 14:51:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339121096] [2024-02-19 14:51:49,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339121096] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334308712] [2024-02-19 14:51:49,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:51:49,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:49,250 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:49,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-19 14:51:49,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:51:49,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:49,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:51:49,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:49,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:49,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334308712] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:49,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:49,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-19 14:51:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557500720] [2024-02-19 14:51:49,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:49,707 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 14:51:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 14:51:49,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-02-19 14:51:49,714 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:49,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 1824 transitions, 74795 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:51:49,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:49,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:49,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:51:57,998 INFO L124 PetriNetUnfolderBase]: 3533/6835 cut-off events. [2024-02-19 14:51:57,999 INFO L125 PetriNetUnfolderBase]: For 28088/28088 co-relation queries the response was YES. [2024-02-19 14:51:58,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143275 conditions, 6835 events. 3533/6835 cut-off events. For 28088/28088 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 52625 event pairs, 8 based on Foata normal form. 106/6941 useless extension candidates. Maximal degree in co-relation 137242. Up to 5536 conditions per place. [2024-02-19 14:51:58,088 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 1727 selfloop transitions, 1221 changer transitions 449/3398 dead transitions. [2024-02-19 14:51:58,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 3398 transitions, 145810 flow [2024-02-19 14:51:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2024-02-19 14:51:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2024-02-19 14:51:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 1393 transitions. [2024-02-19 14:51:58,091 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35626598465473147 [2024-02-19 14:51:58,091 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 768 predicate places. [2024-02-19 14:51:58,092 INFO L507 AbstractCegarLoop]: Abstraction has has 793 places, 3398 transitions, 145810 flow [2024-02-19 14:51:58,092 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:51:58,092 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:51:58,092 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:51:58,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-02-19 14:51:58,294 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:58,295 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:51:58,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:51:58,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1489290506, now seen corresponding path program 15 times [2024-02-19 14:51:58,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:51:58,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271272769] [2024-02-19 14:51:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:51:58,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:51:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:51:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:58,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:51:58,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271272769] [2024-02-19 14:51:58,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271272769] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:51:58,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584686419] [2024-02-19 14:51:58,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:51:58,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:51:58,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:51:58,472 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:51:58,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-19 14:51:58,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 14:51:58,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:51:58,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:51:58,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:51:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:58,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:51:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:51:59,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584686419] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:51:59,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:51:59,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-19 14:51:59,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980637577] [2024-02-19 14:51:59,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:51:59,047 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 14:51:59,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:51:59,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 14:51:59,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-02-19 14:51:59,058 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:51:59,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 793 places, 3398 transitions, 145810 flow. Second operand has 31 states, 31 states have (on average 4.774193548387097) internal successors, (148), 31 states have internal predecessors, (148), 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) [2024-02-19 14:51:59,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:51:59,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:51:59,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:52:12,716 INFO L124 PetriNetUnfolderBase]: 4940/9291 cut-off events. [2024-02-19 14:52:12,716 INFO L125 PetriNetUnfolderBase]: For 40216/40216 co-relation queries the response was YES. [2024-02-19 14:52:12,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204168 conditions, 9291 events. 4940/9291 cut-off events. For 40216/40216 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 71600 event pairs, 2 based on Foata normal form. 16/9307 useless extension candidates. Maximal degree in co-relation 197171. Up to 7594 conditions per place. [2024-02-19 14:52:12,845 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 2317 selfloop transitions, 1632 changer transitions 540/4490 dead transitions. [2024-02-19 14:52:12,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 4490 transitions, 201372 flow [2024-02-19 14:52:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-02-19 14:52:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2024-02-19 14:52:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 1214 transitions. [2024-02-19 14:52:12,848 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37434474252235583 [2024-02-19 14:52:12,848 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 906 predicate places. [2024-02-19 14:52:12,849 INFO L507 AbstractCegarLoop]: Abstraction has has 931 places, 4490 transitions, 201372 flow [2024-02-19 14:52:12,849 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.774193548387097) internal successors, (148), 31 states have internal predecessors, (148), 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) [2024-02-19 14:52:12,849 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:52:12,849 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:52:12,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-02-19 14:52:13,052 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-02-19 14:52:13,053 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:52:13,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:52:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1488378954, now seen corresponding path program 16 times [2024-02-19 14:52:13,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:52:13,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125125481] [2024-02-19 14:52:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:52:13,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:52:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:52:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:52:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:52:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125125481] [2024-02-19 14:52:13,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125125481] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:52:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050451092] [2024-02-19 14:52:13,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:52:13,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:52:13,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:52:13,364 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:52:13,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-19 14:52:13,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:52:13,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:52:13,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:52:13,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:52:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:52:13,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:52:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:52:13,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050451092] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:52:13,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:52:13,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-19 14:52:13,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597404919] [2024-02-19 14:52:13,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:52:13,905 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 14:52:13,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:52:13,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 14:52:13,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-02-19 14:52:13,915 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:52:13,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 4490 transitions, 201372 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:52:13,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:52:13,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:52:13,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:52:29,977 INFO L124 PetriNetUnfolderBase]: 5462/10265 cut-off events. [2024-02-19 14:52:29,977 INFO L125 PetriNetUnfolderBase]: For 45015/45015 co-relation queries the response was YES. [2024-02-19 14:52:29,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235575 conditions, 10265 events. 5462/10265 cut-off events. For 45015/45015 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 80822 event pairs, 12 based on Foata normal form. 3/10268 useless extension candidates. Maximal degree in co-relation 227756. Up to 8379 conditions per place. [2024-02-19 14:52:30,129 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 2967 selfloop transitions, 1420 changer transitions 605/4993 dead transitions. [2024-02-19 14:52:30,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1000 places, 4993 transitions, 233723 flow [2024-02-19 14:52:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-02-19 14:52:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-02-19 14:52:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 547 transitions. [2024-02-19 14:52:30,131 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33975155279503105 [2024-02-19 14:52:30,131 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 975 predicate places. [2024-02-19 14:52:30,131 INFO L507 AbstractCegarLoop]: Abstraction has has 1000 places, 4993 transitions, 233723 flow [2024-02-19 14:52:30,131 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:52:30,131 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:52:30,132 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:52:30,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-19 14:52:30,343 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:52:30,343 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:52:30,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:52:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2015961526, now seen corresponding path program 17 times [2024-02-19 14:52:30,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:52:30,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688072973] [2024-02-19 14:52:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:52:30,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:52:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:52:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:52:30,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:52:30,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688072973] [2024-02-19 14:52:30,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688072973] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:52:30,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482598330] [2024-02-19 14:52:30,491 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:52:30,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:52:30,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:52:30,501 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:52:30,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-19 14:52:30,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 14:52:30,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:52:30,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:52:30,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:52:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:52:30,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:52:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:52:31,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482598330] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:52:31,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:52:31,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-19 14:52:31,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522483518] [2024-02-19 14:52:31,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:52:31,199 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 14:52:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:52:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 14:52:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-02-19 14:52:31,211 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:52:31,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1000 places, 4993 transitions, 233723 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:52:31,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:52:31,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:52:31,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:52:58,595 INFO L124 PetriNetUnfolderBase]: 7956/14794 cut-off events. [2024-02-19 14:52:58,595 INFO L125 PetriNetUnfolderBase]: For 66639/66639 co-relation queries the response was YES. [2024-02-19 14:52:58,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354021 conditions, 14794 events. 7956/14794 cut-off events. For 66639/66639 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 123777 event pairs, 4 based on Foata normal form. 10/14804 useless extension candidates. Maximal degree in co-relation 343986. Up to 12112 conditions per place. [2024-02-19 14:52:58,792 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 3965 selfloop transitions, 2561 changer transitions 807/7334 dead transitions. [2024-02-19 14:52:58,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1133 places, 7334 transitions, 357466 flow [2024-02-19 14:52:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-02-19 14:52:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2024-02-19 14:52:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 1020 transitions. [2024-02-19 14:52:58,814 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3309539260220636 [2024-02-19 14:52:58,815 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1108 predicate places. [2024-02-19 14:52:58,815 INFO L507 AbstractCegarLoop]: Abstraction has has 1133 places, 7334 transitions, 357466 flow [2024-02-19 14:52:58,816 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:52:58,816 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:52:58,816 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:52:58,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-19 14:52:59,016 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:52:59,016 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:52:59,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:52:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash -766762537, now seen corresponding path program 2 times [2024-02-19 14:52:59,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:52:59,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538797663] [2024-02-19 14:52:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:52:59,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:52:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:52:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:52:59,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:52:59,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538797663] [2024-02-19 14:52:59,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538797663] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:52:59,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705998261] [2024-02-19 14:52:59,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:52:59,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:52:59,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:52:59,172 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:52:59,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-19 14:52:59,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:52:59,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:52:59,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2024-02-19 14:52:59,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:52:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:52:59,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:52:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:52:59,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705998261] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:52:59,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:52:59,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2024-02-19 14:52:59,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165908119] [2024-02-19 14:52:59,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:52:59,612 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-02-19 14:52:59,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:52:59,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-02-19 14:52:59,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2024-02-19 14:52:59,624 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:52:59,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1133 places, 7334 transitions, 357466 flow. Second operand has 33 states, 33 states have (on average 4.515151515151516) internal successors, (149), 33 states have internal predecessors, (149), 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) [2024-02-19 14:52:59,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:52:59,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:52:59,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:53:41,874 INFO L124 PetriNetUnfolderBase]: 8361/15654 cut-off events. [2024-02-19 14:53:41,875 INFO L125 PetriNetUnfolderBase]: For 75660/75660 co-relation queries the response was YES. [2024-02-19 14:53:41,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390520 conditions, 15654 events. 8361/15654 cut-off events. For 75660/75660 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 133120 event pairs, 6 based on Foata normal form. 117/15771 useless extension candidates. Maximal degree in co-relation 378859. Up to 12868 conditions per place. [2024-02-19 14:53:42,112 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 4551 selfloop transitions, 2261 changer transitions 1027/7840 dead transitions. [2024-02-19 14:53:42,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1172 places, 7840 transitions, 398141 flow [2024-02-19 14:53:42,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-02-19 14:53:42,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-02-19 14:53:42,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 360 transitions. [2024-02-19 14:53:42,114 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2024-02-19 14:53:42,114 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1147 predicate places. [2024-02-19 14:53:42,115 INFO L507 AbstractCegarLoop]: Abstraction has has 1172 places, 7840 transitions, 398141 flow [2024-02-19 14:53:42,115 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.515151515151516) internal successors, (149), 33 states have internal predecessors, (149), 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) [2024-02-19 14:53:42,115 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:53:42,115 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:53:42,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-02-19 14:53:42,325 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:53:42,326 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:53:42,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:53:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash 699804222, now seen corresponding path program 18 times [2024-02-19 14:53:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:53:42,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695598142] [2024-02-19 14:53:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:53:42,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:53:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:53:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:53:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:53:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695598142] [2024-02-19 14:53:42,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695598142] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:53:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974516060] [2024-02-19 14:53:42,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:53:42,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:53:42,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:53:42,457 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:53:42,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-19 14:53:42,529 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 14:53:42,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:53:42,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:53:42,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:53:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:53:42,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:53:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:53:42,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974516060] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:53:42,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:53:42,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-19 14:53:42,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492322200] [2024-02-19 14:53:42,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:53:42,943 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 14:53:42,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:53:42,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 14:53:42,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2024-02-19 14:53:42,953 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:53:42,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1172 places, 7840 transitions, 398141 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:53:42,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:53:42,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:53:42,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:54:33,465 INFO L124 PetriNetUnfolderBase]: 8513/15935 cut-off events. [2024-02-19 14:54:33,466 INFO L125 PetriNetUnfolderBase]: For 76879/76879 co-relation queries the response was YES. [2024-02-19 14:54:33,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413355 conditions, 15935 events. 8513/15935 cut-off events. For 76879/76879 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 135840 event pairs, 0 based on Foata normal form. 3/15938 useless extension candidates. Maximal degree in co-relation 401170. Up to 13095 conditions per place. [2024-02-19 14:54:33,712 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 4564 selfloop transitions, 2376 changer transitions 1048/7989 dead transitions. [2024-02-19 14:54:33,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1255 places, 7989 transitions, 421583 flow [2024-02-19 14:54:33,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-02-19 14:54:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-02-19 14:54:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 647 transitions. [2024-02-19 14:54:33,714 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33488612836438925 [2024-02-19 14:54:33,715 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1230 predicate places. [2024-02-19 14:54:33,715 INFO L507 AbstractCegarLoop]: Abstraction has has 1255 places, 7989 transitions, 421583 flow [2024-02-19 14:54:33,715 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:54:33,715 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:54:33,715 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:54:33,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-02-19 14:54:33,926 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-02-19 14:54:33,926 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:54:33,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:54:33,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1775515378, now seen corresponding path program 19 times [2024-02-19 14:54:33,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:54:33,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797616101] [2024-02-19 14:54:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:54:33,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:54:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:54:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:54:34,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:54:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797616101] [2024-02-19 14:54:34,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797616101] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:54:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025350076] [2024-02-19 14:54:34,058 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:54:34,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:54:34,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:54:34,059 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:54:34,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-19 14:54:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:54:34,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:54:34,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:54:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:54:34,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:54:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:54:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025350076] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:54:34,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:54:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-19 14:54:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047400882] [2024-02-19 14:54:34,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:54:34,538 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 14:54:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:54:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 14:54:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-02-19 14:54:34,550 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:54:34,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1255 places, 7989 transitions, 421583 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:54:34,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:54:34,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:54:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:55:33,857 INFO L124 PetriNetUnfolderBase]: 8523/15974 cut-off events. [2024-02-19 14:55:33,858 INFO L125 PetriNetUnfolderBase]: For 76973/76973 co-relation queries the response was YES. [2024-02-19 14:55:33,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430264 conditions, 15974 events. 8523/15974 cut-off events. For 76973/76973 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 136484 event pairs, 2 based on Foata normal form. 3/15977 useless extension candidates. Maximal degree in co-relation 417549. Up to 13128 conditions per place. [2024-02-19 14:55:34,110 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 4556 selfloop transitions, 2402 changer transitions 1063/8022 dead transitions. [2024-02-19 14:55:34,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1330 places, 8022 transitions, 439389 flow [2024-02-19 14:55:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-02-19 14:55:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-02-19 14:55:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 586 transitions. [2024-02-19 14:55:34,112 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3352402745995423 [2024-02-19 14:55:34,112 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1305 predicate places. [2024-02-19 14:55:34,112 INFO L507 AbstractCegarLoop]: Abstraction has has 1330 places, 8022 transitions, 439389 flow [2024-02-19 14:55:34,112 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:55:34,112 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:55:34,112 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:55:34,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-02-19 14:55:34,323 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-02-19 14:55:34,323 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:55:34,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:55:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1855746601, now seen corresponding path program 3 times [2024-02-19 14:55:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:55:34,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356765471] [2024-02-19 14:55:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:55:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:55:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:55:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:55:34,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:55:34,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356765471] [2024-02-19 14:55:34,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356765471] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:55:34,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663346591] [2024-02-19 14:55:34,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:55:34,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:55:34,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:55:34,466 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:55:34,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-19 14:55:34,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 14:55:34,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:55:34,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:55:34,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:55:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:55:34,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:55:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:55:34,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663346591] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:55:34,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:55:34,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-02-19 14:55:34,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619184808] [2024-02-19 14:55:34,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:55:34,799 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-19 14:55:34,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:55:34,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-19 14:55:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2024-02-19 14:55:34,815 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:55:34,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1330 places, 8022 transitions, 439389 flow. Second operand has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 30 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) [2024-02-19 14:55:34,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:55:34,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:55:34,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:56:36,642 INFO L124 PetriNetUnfolderBase]: 8748/16566 cut-off events. [2024-02-19 14:56:36,642 INFO L125 PetriNetUnfolderBase]: For 78816/78816 co-relation queries the response was YES. [2024-02-19 14:56:36,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462647 conditions, 16566 events. 8748/16566 cut-off events. For 78816/78816 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 144198 event pairs, 4 based on Foata normal form. 8/16574 useless extension candidates. Maximal degree in co-relation 448676. Up to 13616 conditions per place. [2024-02-19 14:56:37,140 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 5581 selfloop transitions, 1828 changer transitions 1224/8634 dead transitions. [2024-02-19 14:56:37,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1401 places, 8634 transitions, 490462 flow [2024-02-19 14:56:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-02-19 14:56:37,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-02-19 14:56:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 581 transitions. [2024-02-19 14:56:37,157 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3508454106280193 [2024-02-19 14:56:37,157 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1376 predicate places. [2024-02-19 14:56:37,157 INFO L507 AbstractCegarLoop]: Abstraction has has 1401 places, 8634 transitions, 490462 flow [2024-02-19 14:56:37,158 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.366666666666666) internal successors, (131), 30 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) [2024-02-19 14:56:37,158 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:56:37,158 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:56:37,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-02-19 14:56:37,358 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-02-19 14:56:37,359 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:56:37,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:56:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1679980875, now seen corresponding path program 4 times [2024-02-19 14:56:37,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:56:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257434465] [2024-02-19 14:56:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:56:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:56:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:56:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:37,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:56:37,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257434465] [2024-02-19 14:56:37,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257434465] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:56:37,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589189868] [2024-02-19 14:56:37,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:56:37,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:56:37,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:56:37,523 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:56:37,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-19 14:56:37,619 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:56:37,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:56:37,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:56:37,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:56:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:37,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:56:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:56:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589189868] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:56:37,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:56:37,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-02-19 14:56:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628559328] [2024-02-19 14:56:37,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:56:37,932 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-19 14:56:37,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:56:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-19 14:56:37,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2024-02-19 14:56:37,944 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:56:37,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1401 places, 8634 transitions, 490462 flow. Second operand has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 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) [2024-02-19 14:56:37,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:56:37,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:56:37,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:57:53,105 INFO L124 PetriNetUnfolderBase]: 9529/17961 cut-off events. [2024-02-19 14:57:53,106 INFO L125 PetriNetUnfolderBase]: For 81684/81684 co-relation queries the response was YES. [2024-02-19 14:57:53,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520190 conditions, 17961 events. 9529/17961 cut-off events. For 81684/81684 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 157099 event pairs, 12 based on Foata normal form. 3/17964 useless extension candidates. Maximal degree in co-relation 502061. Up to 14876 conditions per place. [2024-02-19 14:57:53,406 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 4691 selfloop transitions, 3676 changer transitions 1243/9611 dead transitions. [2024-02-19 14:57:53,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1516 places, 9611 transitions, 565700 flow [2024-02-19 14:57:53,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-02-19 14:57:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2024-02-19 14:57:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 866 transitions. [2024-02-19 14:57:53,408 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3218134522482349 [2024-02-19 14:57:53,409 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1491 predicate places. [2024-02-19 14:57:53,409 INFO L507 AbstractCegarLoop]: Abstraction has has 1516 places, 9611 transitions, 565700 flow [2024-02-19 14:57:53,409 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 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) [2024-02-19 14:57:53,409 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:57:53,409 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:57:53,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-19 14:57:53,613 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:57:53,614 INFO L432 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:57:53,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:57:53,614 INFO L85 PathProgramCache]: Analyzing trace with hash -549958436, now seen corresponding path program 20 times [2024-02-19 14:57:53,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:57:53,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070639392] [2024-02-19 14:57:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:57:53,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:57:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:57:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:53,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:57:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070639392] [2024-02-19 14:57:53,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070639392] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:57:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635884169] [2024-02-19 14:57:53,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:57:53,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:57:53,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:57:53,777 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:57:53,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-19 14:57:53,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:57:53,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:57:53,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:57:53,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:57:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:54,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:57:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:57:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635884169] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:57:54,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:57:54,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-19 14:57:54,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675248149] [2024-02-19 14:57:54,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:57:54,238 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 14:57:54,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:57:54,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 14:57:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2024-02-19 14:57:54,250 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:57:54,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1516 places, 9611 transitions, 565700 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:57:54,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:57:54,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:57:54,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:59:27,543 INFO L124 PetriNetUnfolderBase]: 10678/20199 cut-off events. [2024-02-19 14:59:27,543 INFO L125 PetriNetUnfolderBase]: For 92448/92448 co-relation queries the response was YES. [2024-02-19 14:59:27,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604829 conditions, 20199 events. 10678/20199 cut-off events. For 92448/92448 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 180468 event pairs, 0 based on Foata normal form. 5/20204 useless extension candidates. Maximal degree in co-relation 583991. Up to 16751 conditions per place. [2024-02-19 14:59:27,889 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 5446 selfloop transitions, 3973 changer transitions 1322/10742 dead transitions. [2024-02-19 14:59:27,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1680 places, 10742 transitions, 654034 flow [2024-02-19 14:59:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2024-02-19 14:59:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2024-02-19 14:59:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 1308 transitions. [2024-02-19 14:59:27,892 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34466403162055337 [2024-02-19 14:59:27,892 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1655 predicate places. [2024-02-19 14:59:27,892 INFO L507 AbstractCegarLoop]: Abstraction has has 1680 places, 10742 transitions, 654034 flow [2024-02-19 14:59:27,893 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 14:59:27,893 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:59:27,893 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:59:27,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-02-19 14:59:28,104 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:59:28,104 INFO L432 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 14:59:28,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:59:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash -374192710, now seen corresponding path program 21 times [2024-02-19 14:59:28,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:59:28,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628613834] [2024-02-19 14:59:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:59:28,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:59:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:59:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:59:28,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:59:28,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628613834] [2024-02-19 14:59:28,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628613834] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:59:28,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637880177] [2024-02-19 14:59:28,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:59:28,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:59:28,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:59:28,518 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:59:28,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-02-19 14:59:28,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-19 14:59:28,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:59:28,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:59:28,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:59:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:59:28,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:59:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:59:29,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637880177] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:59:29,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:59:29,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-19 14:59:29,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345563190] [2024-02-19 14:59:29,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:59:29,024 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 14:59:29,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:59:29,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 14:59:29,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2024-02-19 14:59:29,046 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 14:59:29,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1680 places, 10742 transitions, 654034 flow. Second operand has 31 states, 31 states have (on average 4.774193548387097) internal successors, (148), 31 states have internal predecessors, (148), 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) [2024-02-19 14:59:29,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:59:29,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 14:59:29,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:01:40,041 INFO L124 PetriNetUnfolderBase]: 13347/25025 cut-off events. [2024-02-19 15:01:40,042 INFO L125 PetriNetUnfolderBase]: For 117526/117526 co-relation queries the response was YES. [2024-02-19 15:01:40,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774251 conditions, 25025 events. 13347/25025 cut-off events. For 117526/117526 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 228725 event pairs, 4 based on Foata normal form. 7/25032 useless extension candidates. Maximal degree in co-relation 750209. Up to 20813 conditions per place. [2024-02-19 15:01:40,509 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 6899 selfloop transitions, 4823 changer transitions 1433/13156 dead transitions. [2024-02-19 15:01:40,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1817 places, 13156 transitions, 827219 flow [2024-02-19 15:01:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-02-19 15:01:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2024-02-19 15:01:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 1197 transitions. [2024-02-19 15:01:40,511 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3717391304347826 [2024-02-19 15:01:40,512 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1792 predicate places. [2024-02-19 15:01:40,512 INFO L507 AbstractCegarLoop]: Abstraction has has 1817 places, 13156 transitions, 827219 flow [2024-02-19 15:01:40,512 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.774193548387097) internal successors, (148), 31 states have internal predecessors, (148), 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) [2024-02-19 15:01:40,512 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:01:40,512 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:01:40,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-02-19 15:01:40,723 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-02-19 15:01:40,723 INFO L432 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:01:40,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:01:40,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1179170281, now seen corresponding path program 5 times [2024-02-19 15:01:40,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:01:40,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877108400] [2024-02-19 15:01:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:01:40,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:01:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:01:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:01:40,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:01:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877108400] [2024-02-19 15:01:40,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877108400] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:01:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587380672] [2024-02-19 15:01:40,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:01:40,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:01:40,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:01:40,856 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:01:40,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-02-19 15:01:40,930 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:01:40,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:01:40,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 15:01:40,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:01:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:01:41,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:01:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:01:41,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587380672] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:01:41,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:01:41,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-02-19 15:01:41,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057457721] [2024-02-19 15:01:41,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:01:41,209 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-19 15:01:41,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:01:41,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-19 15:01:41,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2024-02-19 15:01:41,229 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 15:01:41,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1817 places, 13156 transitions, 827219 flow. Second operand has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 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) [2024-02-19 15:01:41,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:01:41,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 15:01:41,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:04:42,456 INFO L124 PetriNetUnfolderBase]: 13483/25421 cut-off events. [2024-02-19 15:04:42,457 INFO L125 PetriNetUnfolderBase]: For 118558/118558 co-relation queries the response was YES. [2024-02-19 15:04:42,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812250 conditions, 25421 events. 13483/25421 cut-off events. For 118558/118558 co-relation queries the response was YES. Maximal size of possible extension queue 1588. Compared 234425 event pairs, 8 based on Foata normal form. 5/25426 useless extension candidates. Maximal degree in co-relation 787502. Up to 21204 conditions per place. [2024-02-19 15:04:43,018 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 7894 selfloop transitions, 4038 changer transitions 1490/13423 dead transitions. [2024-02-19 15:04:43,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1888 places, 13423 transitions, 871145 flow [2024-02-19 15:04:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-02-19 15:04:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-02-19 15:04:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 568 transitions. [2024-02-19 15:04:43,020 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34299516908212563 [2024-02-19 15:04:43,020 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1863 predicate places. [2024-02-19 15:04:43,020 INFO L507 AbstractCegarLoop]: Abstraction has has 1888 places, 13423 transitions, 871145 flow [2024-02-19 15:04:43,020 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 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) [2024-02-19 15:04:43,020 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:04:43,021 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 15:04:43,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-02-19 15:04:43,233 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-02-19 15:04:43,234 INFO L432 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-19 15:04:43,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:04:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash -593417840, now seen corresponding path program 22 times [2024-02-19 15:04:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:04:43,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631742828] [2024-02-19 15:04:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:04:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:04:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:04:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:04:43,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:04:43,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631742828] [2024-02-19 15:04:43,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631742828] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:04:43,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653371775] [2024-02-19 15:04:43,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:04:43,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:04:43,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:04:43,401 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 15:04:43,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-02-19 15:04:43,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:04:43,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:04:43,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 15:04:43,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:04:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:04:43,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:04:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:04:43,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653371775] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:04:43,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:04:43,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-19 15:04:43,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180771469] [2024-02-19 15:04:43,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:04:43,893 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-19 15:04:43,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:04:43,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-19 15:04:43,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2024-02-19 15:04:43,906 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-19 15:04:43,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1888 places, 13423 transitions, 871145 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-19 15:04:43,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:04:43,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-19 15:04:43,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15