./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:50:52,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:50:52,989 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:50:52,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:50:52,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:50:53,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:50:53,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:50:53,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:50:53,022 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:50:53,023 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:50:53,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:50:53,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:50:53,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:50:53,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:50:53,026 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:50:53,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:50:53,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:50:53,027 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:50:53,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:50:53,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:50:53,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:50:53,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:50:53,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:50:53,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:50:53,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:50:53,032 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:50:53,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:50:53,032 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:50:53,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:50:53,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:50:53,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:50:53,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:50:53,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:50:53,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:50:53,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:50:53,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:50:53,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:50:53,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:50:53,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:50:53,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:50:53,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:50:53,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:50:53,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-11-19 01:50:53,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:50:53,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:50:53,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:50:53,322 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:50:53,325 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:50:53,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-19 01:50:54,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:50:54,713 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:50:54,713 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-19 01:50:54,720 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f837b61/c3cfab71bb144d988befa192b6965cc2/FLAGe70aeca9b [2024-11-19 01:50:55,120 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f837b61/c3cfab71bb144d988befa192b6965cc2 [2024-11-19 01:50:55,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:50:55,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:50:55,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:50:55,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:50:55,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:50:55,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef44bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55, skipping insertion in model container [2024-11-19 01:50:55,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,152 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:50:55,341 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2024-11-19 01:50:55,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:50:55,359 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:50:55,384 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2024-11-19 01:50:55,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:50:55,404 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:50:55,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55 WrapperNode [2024-11-19 01:50:55,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:50:55,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:50:55,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:50:55,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:50:55,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,450 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 182 [2024-11-19 01:50:55,453 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:50:55,454 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:50:55,454 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:50:55,454 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:50:55,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,488 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 01:50:55,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,501 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,508 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:50:55,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:50:55,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:50:55,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:50:55,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (1/1) ... [2024-11-19 01:50:55,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:50:55,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:55,553 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) [2024-11-19 01:50:55,580 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 [2024-11-19 01:50:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:50:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:50:55,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:50:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:50:55,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:50:55,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:50:55,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:50:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:50:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:50:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:50:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:50:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:50:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:50:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:50:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:50:55,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:50:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:50:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:50:55,659 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:50:55,747 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:50:55,749 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:50:56,017 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:50:56,018 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:50:56,232 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:50:56,232 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:50:56,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:50:56 BoogieIcfgContainer [2024-11-19 01:50:56,232 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:50:56,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:50:56,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:50:56,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:50:56,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:50:55" (1/3) ... [2024-11-19 01:50:56,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cbe7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:50:56, skipping insertion in model container [2024-11-19 01:50:56,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:55" (2/3) ... [2024-11-19 01:50:56,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cbe7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:50:56, skipping insertion in model container [2024-11-19 01:50:56,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:50:56" (3/3) ... [2024-11-19 01:50:56,240 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-11-19 01:50:56,253 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:50:56,254 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:50:56,254 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:50:56,302 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:50:56,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2024-11-19 01:50:56,354 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-19 01:50:56,354 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:50:56,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-19 01:50:56,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2024-11-19 01:50:56,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2024-11-19 01:50:56,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:50:56,376 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2616399c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:50:56,376 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:50:56,389 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:50:56,389 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-19 01:50:56,389 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:50:56,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:56,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:56,391 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:50:56,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:56,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1525046065, now seen corresponding path program 1 times [2024-11-19 01:50:56,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:56,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879575423] [2024-11-19 01:50:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:56,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:56,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:56,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879575423] [2024-11-19 01:50:56,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879575423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:56,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:56,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:50:56,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489588312] [2024-11-19 01:50:56,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:56,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:50:56,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:56,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:50:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:50:56,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:50:56,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-19 01:50:56,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:56,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:50:56,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:56,907 INFO L124 PetriNetUnfolderBase]: 617/944 cut-off events. [2024-11-19 01:50:56,907 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-19 01:50:56,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1939 conditions, 944 events. 617/944 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3732 event pairs, 126 based on Foata normal form. 1/931 useless extension candidates. Maximal degree in co-relation 1705. Up to 677 conditions per place. [2024-11-19 01:50:56,918 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-11-19 01:50:56,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2024-11-19 01:50:56,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:50:56,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:50:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-19 01:50:56,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-19 01:50:56,929 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2024-11-19 01:50:56,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2024-11-19 01:50:56,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:50:56,935 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2024-11-19 01:50:56,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-19 01:50:56,939 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-11-19 01:50:56,940 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2024-11-19 01:50:56,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-19 01:50:56,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:56,941 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:56,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:50:56,943 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:50:56,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash -645535589, now seen corresponding path program 1 times [2024-11-19 01:50:56,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:56,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152882792] [2024-11-19 01:50:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:56,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:57,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:57,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152882792] [2024-11-19 01:50:57,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152882792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:57,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:57,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:50:57,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721275119] [2024-11-19 01:50:57,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:57,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:57,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:57,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:57,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:57,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:50:57,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-19 01:50:57,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:57,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:50:57,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:57,444 INFO L124 PetriNetUnfolderBase]: 1206/1844 cut-off events. [2024-11-19 01:50:57,447 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-11-19 01:50:57,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4166 conditions, 1844 events. 1206/1844 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8676 event pairs, 745 based on Foata normal form. 0/1728 useless extension candidates. Maximal degree in co-relation 1064. Up to 1120 conditions per place. [2024-11-19 01:50:57,460 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 63 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2024-11-19 01:50:57,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 71 transitions, 334 flow [2024-11-19 01:50:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:50:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:50:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-11-19 01:50:57,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-11-19 01:50:57,463 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 5 states and 92 transitions. [2024-11-19 01:50:57,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 71 transitions, 334 flow [2024-11-19 01:50:57,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 71 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:50:57,467 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 122 flow [2024-11-19 01:50:57,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-11-19 01:50:57,468 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-19 01:50:57,469 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 122 flow [2024-11-19 01:50:57,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-19 01:50:57,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:57,470 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:57,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:50:57,470 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:50:57,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:57,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2058810230, now seen corresponding path program 1 times [2024-11-19 01:50:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:57,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774108348] [2024-11-19 01:50:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:57,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:57,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:57,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774108348] [2024-11-19 01:50:57,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774108348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:57,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:57,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:50:57,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858378582] [2024-11-19 01:50:57,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:57,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:57,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:57,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:50:57,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-19 01:50:57,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:57,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:50:57,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:57,847 INFO L124 PetriNetUnfolderBase]: 1047/1614 cut-off events. [2024-11-19 01:50:57,848 INFO L125 PetriNetUnfolderBase]: For 681/759 co-relation queries the response was YES. [2024-11-19 01:50:57,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3863 conditions, 1614 events. 1047/1614 cut-off events. For 681/759 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7290 event pairs, 686 based on Foata normal form. 0/1535 useless extension candidates. Maximal degree in co-relation 2745. Up to 1133 conditions per place. [2024-11-19 01:50:57,856 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 56 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2024-11-19 01:50:57,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 326 flow [2024-11-19 01:50:57,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:50:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:50:57,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-19 01:50:57,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-19 01:50:57,859 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 122 flow. Second operand 5 states and 87 transitions. [2024-11-19 01:50:57,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 326 flow [2024-11-19 01:50:57,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 322 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:50:57,862 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 143 flow [2024-11-19 01:50:57,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-19 01:50:57,864 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2024-11-19 01:50:57,865 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 143 flow [2024-11-19 01:50:57,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-19 01:50:57,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:57,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:57,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:50:57,866 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:50:57,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1482252659, now seen corresponding path program 1 times [2024-11-19 01:50:57,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:57,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962127582] [2024-11-19 01:50:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:57,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:57,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:57,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962127582] [2024-11-19 01:50:57,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962127582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:57,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:57,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:50:57,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577279480] [2024-11-19 01:50:57,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:57,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:57,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:57,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:57,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:57,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:50:57,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-19 01:50:57,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:57,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:50:57,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:58,137 INFO L124 PetriNetUnfolderBase]: 882/1337 cut-off events. [2024-11-19 01:50:58,137 INFO L125 PetriNetUnfolderBase]: For 773/910 co-relation queries the response was YES. [2024-11-19 01:50:58,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 1337 events. 882/1337 cut-off events. For 773/910 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5563 event pairs, 601 based on Foata normal form. 0/1270 useless extension candidates. Maximal degree in co-relation 2827. Up to 1095 conditions per place. [2024-11-19 01:50:58,145 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 2 changer transitions 23/56 dead transitions. [2024-11-19 01:50:58,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 309 flow [2024-11-19 01:50:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:50:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:50:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-19 01:50:58,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-11-19 01:50:58,147 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 143 flow. Second operand 5 states and 81 transitions. [2024-11-19 01:50:58,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 309 flow [2024-11-19 01:50:58,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:50:58,151 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 116 flow [2024-11-19 01:50:58,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2024-11-19 01:50:58,152 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2024-11-19 01:50:58,152 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 116 flow [2024-11-19 01:50:58,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-19 01:50:58,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:58,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:58,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:50:58,153 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:50:58,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:58,153 INFO L85 PathProgramCache]: Analyzing trace with hash -447072999, now seen corresponding path program 1 times [2024-11-19 01:50:58,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:58,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302428300] [2024-11-19 01:50:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:58,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:58,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:58,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302428300] [2024-11-19 01:50:58,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302428300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:58,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028153862] [2024-11-19 01:50:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:58,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:58,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:58,268 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) [2024-11-19 01:50:58,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:50:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:58,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:50:58,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:58,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028153862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:58,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:58,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-19 01:50:58,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514458444] [2024-11-19 01:50:58,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:58,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:50:58,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:58,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:50:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:50:58,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:50:58,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 116 flow. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 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) [2024-11-19 01:50:58,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:58,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:50:58,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:59,018 INFO L124 PetriNetUnfolderBase]: 1504/2184 cut-off events. [2024-11-19 01:50:59,018 INFO L125 PetriNetUnfolderBase]: For 863/1019 co-relation queries the response was YES. [2024-11-19 01:50:59,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5863 conditions, 2184 events. 1504/2184 cut-off events. For 863/1019 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9655 event pairs, 293 based on Foata normal form. 0/1934 useless extension candidates. Maximal degree in co-relation 5844. Up to 666 conditions per place. [2024-11-19 01:50:59,029 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 96 selfloop transitions, 17 changer transitions 0/115 dead transitions. [2024-11-19 01:50:59,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 115 transitions, 617 flow [2024-11-19 01:50:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:50:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 01:50:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-11-19 01:50:59,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4297520661157025 [2024-11-19 01:50:59,034 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 116 flow. Second operand 11 states and 156 transitions. [2024-11-19 01:50:59,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 115 transitions, 617 flow [2024-11-19 01:50:59,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 115 transitions, 543 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-11-19 01:50:59,046 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 183 flow [2024-11-19 01:50:59,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=183, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-19 01:50:59,047 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2024-11-19 01:50:59,047 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 183 flow [2024-11-19 01:50:59,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 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) [2024-11-19 01:50:59,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:59,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:59,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:50:59,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:59,249 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:50:59,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:59,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1953383277, now seen corresponding path program 2 times [2024-11-19 01:50:59,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:59,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578317620] [2024-11-19 01:50:59,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:59,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:59,262 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:59,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:50:59,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:59,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578317620] [2024-11-19 01:50:59,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578317620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:59,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28587817] [2024-11-19 01:50:59,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:59,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:59,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:59,357 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) [2024-11-19 01:50:59,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:50:59,421 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:59,421 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:59,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:50:59,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:50:59,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:50:59,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28587817] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:59,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:50:59,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-19 01:50:59,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135507155] [2024-11-19 01:50:59,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:59,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:50:59,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:59,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:50:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:50:59,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:50:59,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-19 01:50:59,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:59,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:50:59,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:59,916 INFO L124 PetriNetUnfolderBase]: 1884/2736 cut-off events. [2024-11-19 01:50:59,916 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2024-11-19 01:50:59,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 2736 events. 1884/2736 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12324 event pairs, 283 based on Foata normal form. 14/2749 useless extension candidates. Maximal degree in co-relation 7453. Up to 745 conditions per place. [2024-11-19 01:50:59,932 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 87 selfloop transitions, 29 changer transitions 0/118 dead transitions. [2024-11-19 01:50:59,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 118 transitions, 675 flow [2024-11-19 01:50:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:50:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:50:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-11-19 01:50:59,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-11-19 01:50:59,935 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 183 flow. Second operand 9 states and 130 transitions. [2024-11-19 01:50:59,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 118 transitions, 675 flow [2024-11-19 01:50:59,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 118 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:50:59,943 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 393 flow [2024-11-19 01:50:59,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=393, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2024-11-19 01:50:59,945 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 24 predicate places. [2024-11-19 01:50:59,946 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 393 flow [2024-11-19 01:50:59,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-19 01:50:59,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:59,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:59,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:51:00,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 01:51:00,147 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:00,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:00,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2081588191, now seen corresponding path program 3 times [2024-11-19 01:51:00,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:00,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865898102] [2024-11-19 01:51:00,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:51:00,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:00,168 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:51:00,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:00,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:00,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865898102] [2024-11-19 01:51:00,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865898102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6196569] [2024-11-19 01:51:00,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:51:00,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:00,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:00,257 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) [2024-11-19 01:51:00,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:51:00,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:51:00,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:00,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:51:00,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:00,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:00,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6196569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:00,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:00,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-19 01:51:00,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217384160] [2024-11-19 01:51:00,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:00,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:51:00,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:00,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:51:00,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:51:00,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:51:00,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 393 flow. Second operand has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 14 states have internal predecessors, (108), 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) [2024-11-19 01:51:00,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:00,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:51:00,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:01,063 INFO L124 PetriNetUnfolderBase]: 2859/4116 cut-off events. [2024-11-19 01:51:01,063 INFO L125 PetriNetUnfolderBase]: For 7270/7270 co-relation queries the response was YES. [2024-11-19 01:51:01,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14319 conditions, 4116 events. 2859/4116 cut-off events. For 7270/7270 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 19700 event pairs, 461 based on Foata normal form. 16/4131 useless extension candidates. Maximal degree in co-relation 14288. Up to 1249 conditions per place. [2024-11-19 01:51:01,088 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 141 selfloop transitions, 65 changer transitions 0/208 dead transitions. [2024-11-19 01:51:01,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 208 transitions, 1464 flow [2024-11-19 01:51:01,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:51:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:51:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 227 transitions. [2024-11-19 01:51:01,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4585858585858586 [2024-11-19 01:51:01,089 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 393 flow. Second operand 15 states and 227 transitions. [2024-11-19 01:51:01,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 208 transitions, 1464 flow [2024-11-19 01:51:01,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 208 transitions, 1437 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-19 01:51:01,123 INFO L231 Difference]: Finished difference. Result has 78 places, 101 transitions, 915 flow [2024-11-19 01:51:01,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=915, PETRI_PLACES=78, PETRI_TRANSITIONS=101} [2024-11-19 01:51:01,124 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 43 predicate places. [2024-11-19 01:51:01,124 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 101 transitions, 915 flow [2024-11-19 01:51:01,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 14 states have internal predecessors, (108), 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) [2024-11-19 01:51:01,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:01,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:01,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 01:51:01,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:01,329 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:01,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash -233791729, now seen corresponding path program 4 times [2024-11-19 01:51:01,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:01,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936637453] [2024-11-19 01:51:01,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:51:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:01,337 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:51:01,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:01,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:01,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936637453] [2024-11-19 01:51:01,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936637453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:01,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176424435] [2024-11-19 01:51:01,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:51:01,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:01,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:01,398 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) [2024-11-19 01:51:01,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:51:01,462 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:51:01,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:01,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:51:01,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:01,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:01,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:01,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176424435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:01,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:01,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-19 01:51:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439969594] [2024-11-19 01:51:01,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:01,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:51:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:51:01,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:51:01,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-19 01:51:01,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 101 transitions, 915 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2024-11-19 01:51:01,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:01,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-19 01:51:01,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:03,182 INFO L124 PetriNetUnfolderBase]: 6657/9530 cut-off events. [2024-11-19 01:51:03,182 INFO L125 PetriNetUnfolderBase]: For 34510/34510 co-relation queries the response was YES. [2024-11-19 01:51:03,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38556 conditions, 9530 events. 6657/9530 cut-off events. For 34510/34510 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 50643 event pairs, 396 based on Foata normal form. 12/8892 useless extension candidates. Maximal degree in co-relation 38516. Up to 1923 conditions per place. [2024-11-19 01:51:03,245 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 374 selfloop transitions, 349 changer transitions 0/724 dead transitions. [2024-11-19 01:51:03,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 724 transitions, 7384 flow [2024-11-19 01:51:03,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 01:51:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-19 01:51:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 489 transitions. [2024-11-19 01:51:03,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42337662337662335 [2024-11-19 01:51:03,248 INFO L175 Difference]: Start difference. First operand has 78 places, 101 transitions, 915 flow. Second operand 35 states and 489 transitions. [2024-11-19 01:51:03,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 724 transitions, 7384 flow [2024-11-19 01:51:03,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 724 transitions, 6935 flow, removed 94 selfloop flow, removed 5 redundant places. [2024-11-19 01:51:03,472 INFO L231 Difference]: Finished difference. Result has 137 places, 409 transitions, 5147 flow [2024-11-19 01:51:03,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5147, PETRI_PLACES=137, PETRI_TRANSITIONS=409} [2024-11-19 01:51:03,472 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 102 predicate places. [2024-11-19 01:51:03,472 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 409 transitions, 5147 flow [2024-11-19 01:51:03,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2024-11-19 01:51:03,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:03,473 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:03,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:51:03,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:03,674 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:03,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1262404073, now seen corresponding path program 5 times [2024-11-19 01:51:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:03,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314761080] [2024-11-19 01:51:03,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:51:03,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:03,686 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:03,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:03,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:03,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314761080] [2024-11-19 01:51:03,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314761080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:03,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:03,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:51:03,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927586324] [2024-11-19 01:51:03,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:03,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:51:03,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:03,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:51:03,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:51:03,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:51:03,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 409 transitions, 5147 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2024-11-19 01:51:03,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:03,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:51:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:05,107 INFO L124 PetriNetUnfolderBase]: 7217/10446 cut-off events. [2024-11-19 01:51:05,108 INFO L125 PetriNetUnfolderBase]: For 71836/72224 co-relation queries the response was YES. [2024-11-19 01:51:05,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52380 conditions, 10446 events. 7217/10446 cut-off events. For 71836/72224 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 57509 event pairs, 1857 based on Foata normal form. 116/10355 useless extension candidates. Maximal degree in co-relation 52312. Up to 5540 conditions per place. [2024-11-19 01:51:05,302 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 321 selfloop transitions, 145 changer transitions 4/539 dead transitions. [2024-11-19 01:51:05,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 539 transitions, 7150 flow [2024-11-19 01:51:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:51:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:51:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-11-19 01:51:05,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2024-11-19 01:51:05,308 INFO L175 Difference]: Start difference. First operand has 137 places, 409 transitions, 5147 flow. Second operand 7 states and 117 transitions. [2024-11-19 01:51:05,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 539 transitions, 7150 flow [2024-11-19 01:51:05,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 539 transitions, 7094 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-11-19 01:51:05,648 INFO L231 Difference]: Finished difference. Result has 148 places, 449 transitions, 6228 flow [2024-11-19 01:51:05,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5091, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6228, PETRI_PLACES=148, PETRI_TRANSITIONS=449} [2024-11-19 01:51:05,649 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 113 predicate places. [2024-11-19 01:51:05,649 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 449 transitions, 6228 flow [2024-11-19 01:51:05,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2024-11-19 01:51:05,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:05,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:05,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:51:05,650 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:05,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:05,650 INFO L85 PathProgramCache]: Analyzing trace with hash 819755735, now seen corresponding path program 6 times [2024-11-19 01:51:05,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:05,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821390424] [2024-11-19 01:51:05,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:51:05,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:05,660 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:51:05,660 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:05,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:05,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821390424] [2024-11-19 01:51:05,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821390424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:05,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197430775] [2024-11-19 01:51:05,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:51:05,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:05,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:05,755 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) [2024-11-19 01:51:05,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:51:05,815 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:51:05,815 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:05,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:51:05,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:05,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:05,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197430775] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:05,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:51:05,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2024-11-19 01:51:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266242323] [2024-11-19 01:51:05,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:05,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:51:05,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:51:05,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:51:05,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:51:05,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 449 transitions, 6228 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-19 01:51:05,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:05,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:51:05,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:07,624 INFO L124 PetriNetUnfolderBase]: 7705/11140 cut-off events. [2024-11-19 01:51:07,624 INFO L125 PetriNetUnfolderBase]: For 83005/83163 co-relation queries the response was YES. [2024-11-19 01:51:07,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57494 conditions, 11140 events. 7705/11140 cut-off events. For 83005/83163 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 61015 event pairs, 1218 based on Foata normal form. 102/11230 useless extension candidates. Maximal degree in co-relation 57420. Up to 3292 conditions per place. [2024-11-19 01:51:07,705 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 333 selfloop transitions, 264 changer transitions 0/603 dead transitions. [2024-11-19 01:51:07,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 603 transitions, 8725 flow [2024-11-19 01:51:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:51:07,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:51:07,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-11-19 01:51:07,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-11-19 01:51:07,709 INFO L175 Difference]: Start difference. First operand has 148 places, 449 transitions, 6228 flow. Second operand 9 states and 143 transitions. [2024-11-19 01:51:07,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 603 transitions, 8725 flow [2024-11-19 01:51:08,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 603 transitions, 8502 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-11-19 01:51:08,271 INFO L231 Difference]: Finished difference. Result has 156 places, 500 transitions, 7690 flow [2024-11-19 01:51:08,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6027, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7690, PETRI_PLACES=156, PETRI_TRANSITIONS=500} [2024-11-19 01:51:08,272 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 121 predicate places. [2024-11-19 01:51:08,272 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 500 transitions, 7690 flow [2024-11-19 01:51:08,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-19 01:51:08,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:08,272 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:08,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 01:51:08,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 01:51:08,473 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:08,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash 88004035, now seen corresponding path program 7 times [2024-11-19 01:51:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600894454] [2024-11-19 01:51:08,474 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:51:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:08,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600894454] [2024-11-19 01:51:08,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600894454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147055305] [2024-11-19 01:51:08,605 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:51:08,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:08,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:08,607 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) [2024-11-19 01:51:08,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:51:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:08,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:51:08,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:08,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:08,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147055305] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:08,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:51:08,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2024-11-19 01:51:08,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660907713] [2024-11-19 01:51:08,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:08,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:51:08,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:08,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:51:08,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:51:08,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:51:08,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 500 transitions, 7690 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-19 01:51:08,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:08,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:51:08,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:10,643 INFO L124 PetriNetUnfolderBase]: 7770/11185 cut-off events. [2024-11-19 01:51:10,643 INFO L125 PetriNetUnfolderBase]: For 101517/101594 co-relation queries the response was YES. [2024-11-19 01:51:10,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59604 conditions, 11185 events. 7770/11185 cut-off events. For 101517/101594 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 60556 event pairs, 808 based on Foata normal form. 100/11273 useless extension candidates. Maximal degree in co-relation 59526. Up to 4181 conditions per place. [2024-11-19 01:51:10,727 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 200 selfloop transitions, 362 changer transitions 0/568 dead transitions. [2024-11-19 01:51:10,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 568 transitions, 9125 flow [2024-11-19 01:51:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:51:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:51:10,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-11-19 01:51:10,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-11-19 01:51:10,728 INFO L175 Difference]: Start difference. First operand has 156 places, 500 transitions, 7690 flow. Second operand 8 states and 124 transitions. [2024-11-19 01:51:10,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 568 transitions, 9125 flow [2024-11-19 01:51:11,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 568 transitions, 9090 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-19 01:51:11,386 INFO L231 Difference]: Finished difference. Result has 163 places, 504 transitions, 8774 flow [2024-11-19 01:51:11,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=356, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8774, PETRI_PLACES=163, PETRI_TRANSITIONS=504} [2024-11-19 01:51:11,387 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 128 predicate places. [2024-11-19 01:51:11,387 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 504 transitions, 8774 flow [2024-11-19 01:51:11,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-19 01:51:11,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:11,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:11,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 01:51:11,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:11,588 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:11,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:11,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1353936775, now seen corresponding path program 8 times [2024-11-19 01:51:11,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:11,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354504464] [2024-11-19 01:51:11,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:51:11,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:11,599 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:11,599 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:11,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354504464] [2024-11-19 01:51:11,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354504464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564565147] [2024-11-19 01:51:11,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:51:11,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:11,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:11,697 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) [2024-11-19 01:51:11,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:51:11,763 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:11,763 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:11,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:51:11,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:11,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:11,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564565147] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:11,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:51:11,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2024-11-19 01:51:11,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553782146] [2024-11-19 01:51:11,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:11,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:51:11,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:51:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:51:11,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:51:11,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 504 transitions, 8774 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-19 01:51:11,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:11,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:51:11,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:13,607 INFO L124 PetriNetUnfolderBase]: 7750/11146 cut-off events. [2024-11-19 01:51:13,607 INFO L125 PetriNetUnfolderBase]: For 126916/126993 co-relation queries the response was YES. [2024-11-19 01:51:13,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63629 conditions, 11146 events. 7750/11146 cut-off events. For 126916/126993 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 60151 event pairs, 1107 based on Foata normal form. 93/11226 useless extension candidates. Maximal degree in co-relation 63548. Up to 5666 conditions per place. [2024-11-19 01:51:13,803 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 218 selfloop transitions, 330 changer transitions 0/554 dead transitions. [2024-11-19 01:51:13,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 554 transitions, 10105 flow [2024-11-19 01:51:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:51:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:51:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-11-19 01:51:13,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-11-19 01:51:13,804 INFO L175 Difference]: Start difference. First operand has 163 places, 504 transitions, 8774 flow. Second operand 8 states and 123 transitions. [2024-11-19 01:51:13,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 554 transitions, 10105 flow [2024-11-19 01:51:14,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 554 transitions, 9844 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-11-19 01:51:14,465 INFO L231 Difference]: Finished difference. Result has 162 places, 503 transitions, 9164 flow [2024-11-19 01:51:14,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8504, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9164, PETRI_PLACES=162, PETRI_TRANSITIONS=503} [2024-11-19 01:51:14,466 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 127 predicate places. [2024-11-19 01:51:14,466 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 503 transitions, 9164 flow [2024-11-19 01:51:14,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-11-19 01:51:14,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:14,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:14,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:51:14,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:14,667 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:14,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:14,667 INFO L85 PathProgramCache]: Analyzing trace with hash 303646937, now seen corresponding path program 1 times [2024-11-19 01:51:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:14,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333666777] [2024-11-19 01:51:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:14,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:14,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333666777] [2024-11-19 01:51:14,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333666777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:14,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596946600] [2024-11-19 01:51:14,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:14,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:14,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:14,728 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) [2024-11-19 01:51:14,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:51:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:14,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:51:14,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:14,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:14,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596946600] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:14,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:51:14,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-19 01:51:14,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679253460] [2024-11-19 01:51:14,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:14,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:51:14,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:51:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:51:14,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:51:14,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 503 transitions, 9164 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-19 01:51:14,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:14,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:51:14,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:16,100 INFO L124 PetriNetUnfolderBase]: 6184/9002 cut-off events. [2024-11-19 01:51:16,100 INFO L125 PetriNetUnfolderBase]: For 128823/129574 co-relation queries the response was YES. [2024-11-19 01:51:16,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53156 conditions, 9002 events. 6184/9002 cut-off events. For 128823/129574 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 51242 event pairs, 1201 based on Foata normal form. 402/9154 useless extension candidates. Maximal degree in co-relation 53078. Up to 4189 conditions per place. [2024-11-19 01:51:16,180 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 443 selfloop transitions, 8 changer transitions 0/626 dead transitions. [2024-11-19 01:51:16,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 626 transitions, 12464 flow [2024-11-19 01:51:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:51:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:51:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-19 01:51:16,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-19 01:51:16,182 INFO L175 Difference]: Start difference. First operand has 162 places, 503 transitions, 9164 flow. Second operand 5 states and 72 transitions. [2024-11-19 01:51:16,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 626 transitions, 12464 flow [2024-11-19 01:51:16,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 626 transitions, 12032 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-19 01:51:16,732 INFO L231 Difference]: Finished difference. Result has 162 places, 499 transitions, 8794 flow [2024-11-19 01:51:16,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8778, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8794, PETRI_PLACES=162, PETRI_TRANSITIONS=499} [2024-11-19 01:51:16,733 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 127 predicate places. [2024-11-19 01:51:16,733 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 499 transitions, 8794 flow [2024-11-19 01:51:16,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-19 01:51:16,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:16,733 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:16,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 01:51:16,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 01:51:16,934 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:16,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1148126194, now seen corresponding path program 1 times [2024-11-19 01:51:16,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:16,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469147279] [2024-11-19 01:51:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:17,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469147279] [2024-11-19 01:51:17,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469147279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:17,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660977266] [2024-11-19 01:51:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:17,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:17,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:17,433 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) [2024-11-19 01:51:17,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:51:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:17,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 01:51:17,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:17,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:51:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:17,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:17,642 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:51:17,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2024-11-19 01:51:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:17,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660977266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:17,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:17,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 16 [2024-11-19 01:51:17,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345670676] [2024-11-19 01:51:17,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:17,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 01:51:17,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 01:51:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:51:17,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:51:17,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 499 transitions, 8794 flow. Second operand has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 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) [2024-11-19 01:51:17,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:17,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:51:17,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:19,370 INFO L124 PetriNetUnfolderBase]: 7129/10630 cut-off events. [2024-11-19 01:51:19,370 INFO L125 PetriNetUnfolderBase]: For 128822/129688 co-relation queries the response was YES. [2024-11-19 01:51:19,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61885 conditions, 10630 events. 7129/10630 cut-off events. For 128822/129688 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 63695 event pairs, 1105 based on Foata normal form. 377/10746 useless extension candidates. Maximal degree in co-relation 61807. Up to 7798 conditions per place. [2024-11-19 01:51:19,456 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 477 selfloop transitions, 99 changer transitions 1/757 dead transitions. [2024-11-19 01:51:19,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 757 transitions, 13596 flow [2024-11-19 01:51:19,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:51:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:51:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-11-19 01:51:19,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48737373737373735 [2024-11-19 01:51:19,457 INFO L175 Difference]: Start difference. First operand has 162 places, 499 transitions, 8794 flow. Second operand 12 states and 193 transitions. [2024-11-19 01:51:19,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 757 transitions, 13596 flow [2024-11-19 01:51:20,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 757 transitions, 13457 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-19 01:51:20,226 INFO L231 Difference]: Finished difference. Result has 174 places, 592 transitions, 10712 flow [2024-11-19 01:51:20,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8672, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10712, PETRI_PLACES=174, PETRI_TRANSITIONS=592} [2024-11-19 01:51:20,228 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 139 predicate places. [2024-11-19 01:51:20,228 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 592 transitions, 10712 flow [2024-11-19 01:51:20,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 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) [2024-11-19 01:51:20,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:20,228 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:20,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 01:51:20,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 01:51:20,429 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:20,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:20,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2129447069, now seen corresponding path program 1 times [2024-11-19 01:51:20,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:20,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516009656] [2024-11-19 01:51:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:20,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:20,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:20,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516009656] [2024-11-19 01:51:20,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516009656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:20,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032187684] [2024-11-19 01:51:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:20,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:20,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:20,893 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) [2024-11-19 01:51:20,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:51:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:20,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 01:51:20,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:21,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:51:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:21,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:21,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:51:21,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2024-11-19 01:51:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:21,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032187684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:21,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:21,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22 [2024-11-19 01:51:21,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100213384] [2024-11-19 01:51:21,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:21,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:51:21,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:21,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:51:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:51:21,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:51:21,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 592 transitions, 10712 flow. Second operand has 23 states, 23 states have (on average 7.478260869565218) internal successors, (172), 23 states have internal predecessors, (172), 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) [2024-11-19 01:51:21,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:21,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:51:21,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:25,437 INFO L124 PetriNetUnfolderBase]: 13676/19739 cut-off events. [2024-11-19 01:51:25,437 INFO L125 PetriNetUnfolderBase]: For 198581/198668 co-relation queries the response was YES. [2024-11-19 01:51:25,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114947 conditions, 19739 events. 13676/19739 cut-off events. For 198581/198668 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 118157 event pairs, 1185 based on Foata normal form. 88/19807 useless extension candidates. Maximal degree in co-relation 111989. Up to 13278 conditions per place. [2024-11-19 01:51:25,742 INFO L140 encePairwiseOnDemand]: 16/33 looper letters, 1069 selfloop transitions, 614 changer transitions 1/1690 dead transitions. [2024-11-19 01:51:25,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 1690 transitions, 29744 flow [2024-11-19 01:51:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-19 01:51:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-19 01:51:25,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 511 transitions. [2024-11-19 01:51:25,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39704739704739705 [2024-11-19 01:51:25,745 INFO L175 Difference]: Start difference. First operand has 174 places, 592 transitions, 10712 flow. Second operand 39 states and 511 transitions. [2024-11-19 01:51:25,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 1690 transitions, 29744 flow [2024-11-19 01:51:27,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 1690 transitions, 29373 flow, removed 125 selfloop flow, removed 4 redundant places. [2024-11-19 01:51:27,901 INFO L231 Difference]: Finished difference. Result has 232 places, 1180 transitions, 21578 flow [2024-11-19 01:51:27,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10588, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=21578, PETRI_PLACES=232, PETRI_TRANSITIONS=1180} [2024-11-19 01:51:27,902 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 197 predicate places. [2024-11-19 01:51:27,902 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 1180 transitions, 21578 flow [2024-11-19 01:51:27,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.478260869565218) internal successors, (172), 23 states have internal predecessors, (172), 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) [2024-11-19 01:51:27,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:27,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:27,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 01:51:28,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 01:51:28,103 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:28,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:28,104 INFO L85 PathProgramCache]: Analyzing trace with hash 981214545, now seen corresponding path program 2 times [2024-11-19 01:51:28,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:28,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514811539] [2024-11-19 01:51:28,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:51:28,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:28,115 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:28,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:28,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:28,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514811539] [2024-11-19 01:51:28,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514811539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:28,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327410906] [2024-11-19 01:51:28,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:51:28,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:28,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:28,380 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) [2024-11-19 01:51:28,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:51:28,447 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:28,447 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:28,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 01:51:28,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:28,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:51:28,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:51:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:28,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:28,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327410906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:28,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:28,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2024-11-19 01:51:28,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266575560] [2024-11-19 01:51:28,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:28,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:51:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:51:28,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:51:28,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:51:28,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 1180 transitions, 21578 flow. Second operand has 25 states, 25 states have (on average 8.2) internal successors, (205), 25 states have internal predecessors, (205), 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) [2024-11-19 01:51:28,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:28,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:51:28,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:33,184 INFO L124 PetriNetUnfolderBase]: 13846/20388 cut-off events. [2024-11-19 01:51:33,184 INFO L125 PetriNetUnfolderBase]: For 273059/274524 co-relation queries the response was YES. [2024-11-19 01:51:33,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132739 conditions, 20388 events. 13846/20388 cut-off events. For 273059/274524 co-relation queries the response was YES. Maximal size of possible extension queue 1023. Compared 129853 event pairs, 1179 based on Foata normal form. 662/20847 useless extension candidates. Maximal degree in co-relation 130950. Up to 14176 conditions per place. [2024-11-19 01:51:33,590 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 826 selfloop transitions, 337 changer transitions 1/1384 dead transitions. [2024-11-19 01:51:33,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 1384 transitions, 26453 flow [2024-11-19 01:51:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:51:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:51:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 194 transitions. [2024-11-19 01:51:33,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39191919191919194 [2024-11-19 01:51:33,592 INFO L175 Difference]: Start difference. First operand has 232 places, 1180 transitions, 21578 flow. Second operand 15 states and 194 transitions. [2024-11-19 01:51:33,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 1384 transitions, 26453 flow [2024-11-19 01:51:36,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1384 transitions, 26290 flow, removed 79 selfloop flow, removed 2 redundant places. [2024-11-19 01:51:36,989 INFO L231 Difference]: Finished difference. Result has 250 places, 1242 transitions, 22916 flow [2024-11-19 01:51:36,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=21431, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=873, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=22916, PETRI_PLACES=250, PETRI_TRANSITIONS=1242} [2024-11-19 01:51:36,991 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 215 predicate places. [2024-11-19 01:51:36,991 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 1242 transitions, 22916 flow [2024-11-19 01:51:36,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.2) internal successors, (205), 25 states have internal predecessors, (205), 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) [2024-11-19 01:51:36,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:36,991 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:37,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 01:51:37,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 01:51:37,192 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:37,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1857498199, now seen corresponding path program 3 times [2024-11-19 01:51:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:37,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637868903] [2024-11-19 01:51:37,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:51:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:37,210 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:51:37,210 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:37,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:37,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637868903] [2024-11-19 01:51:37,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637868903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:37,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661389643] [2024-11-19 01:51:37,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:51:37,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:37,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:37,549 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) [2024-11-19 01:51:37,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:51:37,620 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:51:37,621 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:37,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 01:51:37,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:37,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:51:37,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:51:37,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2024-11-19 01:51:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:37,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:37,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661389643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:37,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:37,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 23 [2024-11-19 01:51:37,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069004181] [2024-11-19 01:51:37,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:37,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:51:37,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:38,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:51:38,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:51:38,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:51:38,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 1242 transitions, 22916 flow. Second operand has 24 states, 24 states have (on average 8.375) internal successors, (201), 24 states have internal predecessors, (201), 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) [2024-11-19 01:51:38,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:38,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:51:38,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:44,022 INFO L124 PetriNetUnfolderBase]: 15390/22732 cut-off events. [2024-11-19 01:51:44,022 INFO L125 PetriNetUnfolderBase]: For 336623/338305 co-relation queries the response was YES. [2024-11-19 01:51:44,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158555 conditions, 22732 events. 15390/22732 cut-off events. For 336623/338305 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 147590 event pairs, 1137 based on Foata normal form. 650/23196 useless extension candidates. Maximal degree in co-relation 158027. Up to 14593 conditions per place. [2024-11-19 01:51:44,406 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 857 selfloop transitions, 627 changer transitions 1/1705 dead transitions. [2024-11-19 01:51:44,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1705 transitions, 32845 flow [2024-11-19 01:51:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 01:51:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 01:51:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 375 transitions. [2024-11-19 01:51:44,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2024-11-19 01:51:44,408 INFO L175 Difference]: Start difference. First operand has 250 places, 1242 transitions, 22916 flow. Second operand 28 states and 375 transitions. [2024-11-19 01:51:44,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1705 transitions, 32845 flow [2024-11-19 01:51:48,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1705 transitions, 32548 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-11-19 01:51:48,621 INFO L231 Difference]: Finished difference. Result has 290 places, 1494 transitions, 29024 flow [2024-11-19 01:51:48,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=22668, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=411, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=789, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=29024, PETRI_PLACES=290, PETRI_TRANSITIONS=1494} [2024-11-19 01:51:48,623 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 255 predicate places. [2024-11-19 01:51:48,623 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 1494 transitions, 29024 flow [2024-11-19 01:51:48,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.375) internal successors, (201), 24 states have internal predecessors, (201), 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) [2024-11-19 01:51:48,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:48,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:48,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 01:51:48,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 01:51:48,827 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:51:48,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:48,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1074791655, now seen corresponding path program 4 times [2024-11-19 01:51:48,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:48,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161012917] [2024-11-19 01:51:48,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:51:48,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:48,838 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:51:48,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:49,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:49,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161012917] [2024-11-19 01:51:49,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161012917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:49,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761449499] [2024-11-19 01:51:49,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:51:49,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:49,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:49,150 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) [2024-11-19 01:51:49,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 01:51:49,216 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:51:49,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:49,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 01:51:49,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:49,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:51:49,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:51:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:49,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:49,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761449499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:49,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:49,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2024-11-19 01:51:49,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272944171] [2024-11-19 01:51:49,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:49,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:51:49,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:49,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:51:49,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:51:49,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-19 01:51:49,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 1494 transitions, 29024 flow. Second operand has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 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) [2024-11-19 01:51:49,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:49,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-19 01:51:49,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:59,924 INFO L124 PetriNetUnfolderBase]: 23177/32670 cut-off events. [2024-11-19 01:51:59,925 INFO L125 PetriNetUnfolderBase]: For 555782/555782 co-relation queries the response was YES. [2024-11-19 01:52:00,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244616 conditions, 32670 events. 23177/32670 cut-off events. For 555782/555782 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 200405 event pairs, 1503 based on Foata normal form. 1/32671 useless extension candidates. Maximal degree in co-relation 243984. Up to 20092 conditions per place. [2024-11-19 01:52:00,655 INFO L140 encePairwiseOnDemand]: 15/33 looper letters, 1552 selfloop transitions, 929 changer transitions 1/2483 dead transitions. [2024-11-19 01:52:00,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 2483 transitions, 51384 flow [2024-11-19 01:52:00,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-19 01:52:00,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-19 01:52:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 431 transitions. [2024-11-19 01:52:00,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3437001594896332 [2024-11-19 01:52:00,657 INFO L175 Difference]: Start difference. First operand has 290 places, 1494 transitions, 29024 flow. Second operand 38 states and 431 transitions. [2024-11-19 01:52:00,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 2483 transitions, 51384 flow [2024-11-19 01:52:09,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 2483 transitions, 50709 flow, removed 335 selfloop flow, removed 2 redundant places. [2024-11-19 01:52:09,267 INFO L231 Difference]: Finished difference. Result has 349 places, 1852 transitions, 38562 flow [2024-11-19 01:52:09,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=28559, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=792, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=38562, PETRI_PLACES=349, PETRI_TRANSITIONS=1852} [2024-11-19 01:52:09,269 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 314 predicate places. [2024-11-19 01:52:09,269 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 1852 transitions, 38562 flow [2024-11-19 01:52:09,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 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) [2024-11-19 01:52:09,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:09,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:09,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 01:52:09,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 01:52:09,470 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:09,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:09,470 INFO L85 PathProgramCache]: Analyzing trace with hash -634746552, now seen corresponding path program 2 times [2024-11-19 01:52:09,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:09,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609022096] [2024-11-19 01:52:09,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:09,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:09,488 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:09,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609022096] [2024-11-19 01:52:09,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609022096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416887594] [2024-11-19 01:52:09,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:09,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:09,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:09,670 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) [2024-11-19 01:52:09,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 01:52:09,738 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:09,739 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:09,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 01:52:09,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:09,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 01:52:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:09,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:09,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:09,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-19 01:52:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:09,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416887594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:09,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:09,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 15 [2024-11-19 01:52:09,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254901618] [2024-11-19 01:52:09,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:09,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:52:09,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:09,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:52:09,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:52:09,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:52:09,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1852 transitions, 38562 flow. Second operand has 16 states, 16 states have (on average 10.4375) internal successors, (167), 16 states have internal predecessors, (167), 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) [2024-11-19 01:52:09,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:09,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:52:09,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand